Riken Keiki GX-6100 Operating Manual
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Riken Keiki GX-6100 Operating Manual

Riken Keiki GX-6100 Operating Manual

Portable gas detector
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PT0E-2520
Portable Gas Detector
GX-6100
Operating Manual

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Summary of Contents for Riken Keiki GX-6100

  • Page 1 PT0E-2520 Portable Gas Detector GX-6100 Operating Manual...

  • Page 2: Table Of Contents

    Contents Contents 1 Product Overview ............................... 5 1-1 Introduction ............................5 1-2 Intended use ............................6 1-3 Checking the detection target gases and product specifications ............7 1-4 DANGER, WARNING, CAUTION, and NOTE ..................9 1-5 Checking standards and explosion-proof specifications ..............10 2 Important Safety Information ..........................
  • Page 3 Contents 5-9 Turning off the power ......................... 78 6 Settings (Display Mode) ............................ 79 6-1 Display mode items ........................... 79 6-2 Switching to display mode ......................... 85 6-3 Checking settings ..........................86 6-3-1 Displaying/clearing the peak value ..................86 6-3-2 Displaying the snap logger (gas concentration/alarm status) ..........87 6-3-3 Displaying alarm setpoints ......................
  • Page 4 Contents 8-2-4 Setting span adjustment ....................... 142 8-2-5 Performing span adjustment ....................148 8-3 Performing bump tests ........................151 8-4 Performing alarm tests ........................153 8-5 Cleaning procedure ......................... 154 8-6 Parts replacement..........................155 8-6-1 Periodic replacement parts ....................155 8-6-2 Dust filter replacement ......................

  • Page 5: Product Overview

    *2: Can be installed on a PC from the separately sold CD-ROM. *3: Can be installed on a PC from the RIKEN KEIKI website. RIKEN KEIKI accepts no liability for accidents or damage resulting from use of the product, whether within or outside the warranty period.

  • Page 6: Intended Use

    1 Product Overview 1-2 Intended use 1-2 Intended use This product is a multi-gas detector capable of detecting combustible gases (%LEL, vol%), oxygen (O (oxygen deficiency, excess oxygen), carbon monoxide (CO), hydrogen sulfide (H S), carbon dioxide (CO ammonia (NH ), chlorine (Cl ), phosphine (PH ), sulfur dioxide (SO...

  • Page 7: Checking The Detection Target Gases And Product Specifications

    1 Product Overview 1-3 Checking the detection target gases and product specifications 1-3 Checking the detection target gases and product specifications The detection target gases vary depending on the particular sensors installed in the product. Check the detection target gases using the product code before use. The alphanumeric product codes for the product are categorized as follows: ①...
  • Page 8 1 Product Overview 1-3 Checking the detection target gases and product specifications ④⑤ and ⑥⑦: Smart sensor combinations Code Sensor model (detection target gas) N/A (dummy sensor) PIS-001A (VOC, 10.6 eV) [ppb] PIS-002A (VOC, 10.6 eV) [ppm] PIS-003 (VOC, 10.0 eV) [ppm] DES-3311-1 (CO ) [vol%] DES-3311-2 (HC (i-C...

  • Page 9: Danger, Warning, Caution, And Note

    1 Product Overview 1-4 DANGER, WARNING, CAUTION, and NOTE <Example product codes> The table below shows example product codes and their respective specifications. Example product code GM11P1D1L1 00 G004D400D0 50 Combustible gas sensor NCR-6309 (CH ,%LEL) Not installed Oxygen sensor ESR-X13P (O Not installed Toxic gas sensor...

  • Page 10: Checking Standards And Explosion-Proof Specifications

    Check the affixed nameplate for product specifications. Rear Rear Front Ex marking/ CE marking Front location Type approval certificate marking location (View of GX-6100 from above) (View of GX-6100 from side) Type approval Type approval certificate marking certificate marking (BUD-6100) (BUL-6100) Typical nameplate for...

  • Page 11: Important Safety Information

    2 Important Safety Information 2-1 Danger information Important Safety Information To maintain the performance of the product and to ensure safe use, always observe the following DANGER, WARNING, and CAUTION instructions. 2-1 Danger information DANGER Explosion-proofing  Do not modify or alter the circuits or configuration. ...

  • Page 12: Warnings

    2-2 Warnings 2-2 Warnings WARNING If an abnormality occurs  Contact RIKEN KEIKI immediately. Visit our website for information on the nearest RIKEN KEIKI office. Website: https://www.rikenkeiki.co.jp/ Sampling point pressure  The product is designed to draw in gas at atmospheric pressure. There is a danger that detection target gas may leak from inside the product if an excessive pressure is applied to the gas inlet (GAS IN) or outlet (GAS OUT) of the product.
  • Page 13 2 Important Safety Information 2-2 Warnings Miscellaneous  Do not use the product in rain or submerge it in water. Doing so may cause water to enter the product, resulting in the failure of the sensors or the product. Even if this does not result in failure, a wet sensor may be unable to detect gases.

  • Page 14: Precautions

    2 Important Safety Information 2-3 Precautions 2-3 Precautions CAUTION Avoid use in locations where oil or chemicals may splash. Avoid deliberately submerging the product in water.  Avoid using the product in locations where the product may be splashed with liquids such as oil and chemicals.
  • Page 15 2 Important Safety Information 2-3 Precautions Miscellaneous  Pressing buttons unnecessarily may change the settings, preventing alarms from activating correctly. Avoid performing any operations not described in this operating manual.  Do not drop the product or subject it to impact. Doing so may degrade explosion-proof, waterproof, dustproof, and gas detection performance.
  • Page 16 (VOCs). If the reading rises and will not return, the activated carbon filter in the carbon monoxide sensor must be replaced. For information on activated carbon filter replacement, contact RIKEN KEIKI.  Due to the properties of the gases, response to chlorine (Cl...
  • Page 17  After an extended period of storage, be sure to perform fresh air adjustment before resuming use. For information on readjustment including fresh air adjustment, contact RIKEN KEIKI.  Do not use the product in locations where the following miscellaneous gases are present: <Gases affecting sensor sensitivity>...
  • Page 18 2 Important Safety Information 2-3 Precautions <Sensor-corroding gases> Sensor type Miscellaneous gas type NCR sensor Corrosive gases such as SO and NO and acidic gases such as (New ceramic type) hydrogen fluoride (HF) and hydrogen chloride (HCl) DES sensor Corrosive gases such as SO and NO and acidic gases such as (Non-dispersive infrared type...

  • Page 19: Safety Information

    2-4 Safety information 2-4 Safety information The GX-6100 can be equipped with up to six types of sensors to enable detection of up to six different gas types. Four sensors are used to detect combustible gas (%LEL, vol%), oxygen (O...
  • Page 20 The lithium ion battery unit is evaluated in conjunction with a main unit and may only be used in conjunction with a type-approved main unit. The following main unit can be connected: ・ GX-6100  The dry battery unit is evaluated in conjunction with a main unit and may only be used in conjunction with a type-approved main unit.
  • Page 21 Dry battery unit  Do not remove the dry battery unit in hazardous areas.  Do not replace dry batteries in hazardous areas. <ATEX/IECEx models> Explosion-proof specifications GX-6100 explosion-proof Ambient temperature Combustible gas Battery type class range sensor* Ex da ia IIC T4 Ga -20 °C to +50 °C...
  • Page 22 The sensor must not be exposed to ultraviolet light or used in equipment in which it is not fully enclosed.  Contact RIKEN KEIKI to request readjustment of the product, including gas adjustment, and also parts replacement. GX-6100 (with BUL-6100) ...

  • Page 23: Product Configuration

    3-1 Main unit and accessories Open the box and packaging and inspect the main unit and accessories. If any accessories or parts are missing, contact RIKEN KEIKI. 3-1-1 Main unit For detailed information on the product part names and functions and the LCD display, see ‘3-2 Part names and functions’.

  • Page 24: Accessories

    3 Product Configuration 3-1 Main unit and accessories 3-1-2 Accessories Part name Remarks Protective cover Part No.: 4777 4035 00 Hand strap Part No.: 0888 0605 90 Tapered nozzle Part No.: 4777 4057 20 Belt clip Part No.: 4777 9099 00 Protective film Part No.: 4777 4068 90 Provided with lithium ion battery unit...

  • Page 25: Optional Accessories

    3 Product Configuration 3-1 Main unit and accessories AA alkaline battery Provided with dry battery unit (BUD-6100) (×3) Part No. (single battery): 2753 3007 80 Provided when carbon dioxide sensor is removal filter installed CF-284 Used for CO zero adjustment Part No.: 4383 0390 80 Activated carbon Provided when VOC sensor is installed...
  • Page 26 3 Product Configuration 3-1 Main unit and accessories Part name Remarks The waterproof filter inside the float Sampling tube with separates water to allow gas detection. Part No.: 4777 9368 60 (5 m tube) float (for solvent gas) (5 m/10 m/20 m/ Part No.: 4777 9374 60 (10 m tube) 30 m) Part No.: 4777 9375 30 (20 m tube)
  • Page 27 3 Product Configuration 3-1 Main unit and accessories Part name Remarks Adapter plug Part No.: 2594 1435 00 (Type EU) Adapter plug Part No.: 2594 1434 20 (Type AU) Adapter plug Part No.: 2594 1436 70 (Type UK) LCD protective film Part No.: 4777 9064 60 (set of 5) Part No.:...

  • Page 28: Part Names And Functions

    3 Product Configuration 3-2 Part names and functions 3-2 Part names and functions 3-2-1 Main unit This section describes the main unit part names and functions with the battery unit removed. For more information on the battery unit, see ‘3-2-2 Battery unit’. (12) (11) (15)
  • Page 29 3 Product Configuration 3-2 Part names and functions Name Main function Performs fresh air adjustment in measurement mode. ▲/AIR button Used to select items and adjust numerical values (up) in DISP mode and user mode SHIFT/▼ Used to select items and adjust numerical values (down) in DISP /(PANIC) button mode and user mode.

  • Page 30: Battery Unit

    3 Product Configuration 3-2 Part names and functions 3-2-2 Battery unit <Lithium ion battery unit (BUL-6100)> Charging terminal Main unit connection terminal <Dry battery unit (BUD-6100)> Battery cover Main unit connection terminal Locking plate 30 / 198...

  • Page 31: Lcd Display

    3 Product Configuration 3-2 Part names and functions 3-2-3 LCD display 1 2 3 Name Main function Operating status icon Indicates the operating status in measurement mode. Blinks when normal. Indicates battery levels. See NOTE below for a guide to battery level Battery level icon indications.

  • Page 32: Alarm Functions

    4 Alarm Functions 4-1 Gas alarm types Alarm Functions 4-1 Gas alarm types A gas alarm is triggered instantly if the concentration of the measured gas reaches or exceeds the alarm setpoints shown in the following tables. (Self-latching) Gas alarm types include the first alarm (WARNING), second alarm (ALARM), TWA alarm, STEL alarm, OVER alarm (over scale), and M OVER alarm (negative sensor failure).
  • Page 33 4 Alarm Functions 4-2 Gas alarm setpoints <Combustible gas (Thermal conductivity type sensor)> Methane Detection Item target gas Sensor model TE-7561 Explosion-proof specifications Japan Ex and ATEX/IECEx Display range 0 – 100 vol% Detection range 0 – 100 vol% Resolution 1 vol% First alarm Second alarm...
  • Page 34 4 Alarm Functions 4-2 Gas alarm setpoints <Combustible gas (Hot-wire semiconductor type sensor)> Detection Isobutane Methane Item target gas HC (i-C Sensor model SHS-8661 Explosion-proof specifications Japan Ex and ATEX/IECEx Japan Ex and ATEX/IECEx Display range 0 – 2,000 ppm 0 –...
  • Page 35 4 Alarm Functions 4-2 Gas alarm setpoints <Oxygen (Electrochemical type sensor)> Detection Oxygen Item target gas Sensor model ESR-X13P Explosion-proof specifications Japan Ex ATEX/IECEx Display range 0 – 40.0 % 0 – 40.0 % Detection range 0 – 25.0 % 0 –...
  • Page 36 4 Alarm Functions 4-2 Gas alarm setpoints <Hydrogen sulfide (Electrochemical type sensor)> Detection Hydrogen sulfide Item target gas Sensor model ESR-A13i Explosion-proof specifications Japan Ex ATEX/IECEx Display range 0 – 200.0 ppm 0 – 200.0 ppm Detection range 0 – 30.0 ppm 0 –...
  • Page 37 4 Alarm Functions 4-2 Gas alarm setpoints <Toxic gas (Electrochemical type sensor)> Sulfur dioxide Nitrogen dioxide Hydrogen cyanide Detection Item target gas HCN* Sensor model ESS-03DH ESS-03DH ESS-03DH Japan Ex and Japan Ex and Japan Ex and Explosion-proof specifications ATEX/IECEx ATEX/IECEx ATEX/IECEx Display range...
  • Page 38 4 Alarm Functions 4-2 Gas alarm setpoints <Volatile organic compounds (Photoionization type (PID) sensor)> Volatile organic Volatile organic Volatile organic Detection Item compounds compounds compounds target gas VOCs VOCs VOCs Sensor model PIS-001A PIS-002A PIS-003 Photoionization energy 10.6 eV 10.6 eV 10.0 eV Explosion-proof Japan Ex and...

  • Page 39: Gas Alarm Patterns

    4 Alarm Functions 4-3 Gas alarm patterns 4-3 Gas alarm patterns <Gas alarm buzzer sounding and lamp flashing patterns> If a gas alarm occurs, the user is notified by the buzzer sounding and the alarm LED array flashing. The behavior differs depending on the type of alarm. Alarm type First alarm Second alarm...
  • Page 40 4 Alarm Functions 4-3 Gas alarm patterns <Alarm pattern (L-LL-H)> : 1-second interval : 0.5-second interval Reset Third alarm setpoint First alarm setpoint Second alarm setpoint Time Alarm lamp Buzzer <Gas alarm display> When a gas alarm occurs, the alarm type is indicated in the units display area of the LCD, and the corresponding gas concentration display blinks.
  • Page 41 4 Alarm Functions 4-3 Gas alarm patterns NOTE The alarm pattern can be checked by performing an alarm test at the alarm setpoint display in display  mode. Note, however, that the gas concentration display will not blink in alarm tests. (See ‘8-4 Performing alarm tests’.) If self-latching is selected, the alarm is reset when the RESET button is pressed after the gas ...

  • Page 42: Fault Alarm

     If a fault alarm occurs, determine the cause and take appropriate action. If the problem lies with the product and the fault occurs repeatedly, contact RIKEN KEIKI immediately. NOTE For more information on malfunctions (error messages), see ‘10 Troubleshooting’.

  • Page 43: Man Down Alarm

    4 Alarm Functions 4-5 Man down alarm 4-5 Man down alarm A man down alarm is triggered if the built-in motion sensor, which monitors the motion of the user carrying the product, detects no user motion for a certain period of time. WARNING ...

  • Page 44: Panic Alarm

    4 Alarm Functions 4-6 Panic alarm 4-6 Panic alarm The panic alarm is a function that allows the user to trigger an alarm manually. Hold down the SHIFT/▼ (PANIC) button for approximately one second to trigger the alarm. <Panic alarm buzzer sounding and lamp flashing patterns> Alarm type Prealarm Main alarm...

  • Page 45: Usage Instructions

    5 Usage Instructions 5-1 Usage note Usage Instructions 5-1 Usage note Observe all usage precautions when using the product. Ignoring these precautions may damage the product and prevent inaccurate gas concentration measurement. Check the following before starting gas concentration measurement: ・...

  • Page 46: Removing And Attaching The Battery Unit And Charging

    5 Usage Instructions 5-2 Removing and attaching the battery unit and charging 5-2 Removing and attaching the battery unit and charging 5-2-1 Removing and attaching the battery unit Follow the procedure described below to remove and attach the lithium ion battery unit (BUL-6100) or dry battery unit (BUD-6100).
  • Page 47 5 Usage Instructions 5-2 Removing and attaching the battery unit and charging Confirm that the power for the main unit is turned off. If the power is on, press the POWER/ENTER button to turn it off. Push in and slide the battery unit attachment/removal lever on the underside of the battery unit to the right while applying pressure.

  • Page 48: Charging The Lithium Ion Battery Unit (Bul-6100)

    5 Usage Instructions 5-2 Removing and attaching the battery unit and charging 5-2-2 Charging the lithium ion battery unit (BUL-6100) The product can be used with a lithium ion battery unit (BUL-6100). When using the product for the first time or if the battery level is low, charge the battery unit before use. DANGER ...
  • Page 49 5 Usage Instructions 5-2 Removing and attaching the battery unit and charging Plug the DC plug on the AC adapter into the charger DC jack. Plug the AC adapter into the power outlet. Insert the product straight down into the charger. The charging indicator LED on the charger lights up in red when the main unit is inserted into the charger.

  • Page 50: Replacing Batteries In The Dry Battery Unit (Bud-6100)

    5 Usage Instructions 5-2 Removing and attaching the battery unit and charging 5-2-3 Replacing batteries in the dry battery unit (BUD-6100) The product can be used with a dry battery unit (BUD-6100). When using the product for the first time or if the battery level is low, replace the batteries with three new alkaline AA batteries.

  • Page 51: Attaching The Tapered Nozzle

    5-3 Attaching the tapered nozzle Attach the provided tapered nozzle to the product gas inlet to perform measurements. DANGER  Do not attach a tapered nozzle or any other parts that are not specified by RIKEN KEIKI. 51 / 198...

  • Page 52: Turning On The Power

    5 Usage Instructions 5-4 Turning on the power 5-4 Turning on the power When the power is turned on, various settings including the date and time and alarm setpoints are displayed, and then the normal mode concentration display screen is displayed. If an SHS sensor is installed, a screen first appears to confirm whether to proceed to normal mode or leak check mode.
  • Page 53 5 Usage Instructions 5-4 Turning on the power Full scale display First alarm setpoint display Combustible gas conversion gas name display (Displayed only when set) Second alarm setpoint Third alarm setpoint display STEL alarm setpoint display display TWA alarm setpoint display User ID display Station ID display 53 / 198...
  • Page 54 [- - - -] appears in the concentration display area of the gas for which the sensor abnormality occurred, and measurement is not possible for that particular gas. Contact RIKEN KEIKI immediately. If an abnormality arises in the internal clock, a fault alarm [FAIL CLOCK] may be triggered. If a fault ...
  • Page 55 5 Usage Instructions 5-4 Turning on the power Date and time display Displays the current date and time.  Battery voltage display Displays the type of battery installed and alarm type.  Maintenance notification display (Japan Ex model) With the Japan Ex model, the number of days remaining until one year (365 days) is displayed after the ...
  • Page 56 5 Usage Instructions 5-4 Turning on the power VOC gas name / Sensor type display [GAS SMART 1 / GAS SMART 2] If a VOC sensor is installed, [Isobutylene] or the conversion gas name (if set) is displayed. The sensor ...

  • Page 57: Detection Modes

    5 Usage Instructions 5-5 Detection modes 5-5 Detection modes The product features three different detection modes (normal mode, leak check mode, and benzene select mode) depending on the sensors installed. Leak check mode is displayed only if an SHS sensor is installed, and benzene select mode is displayed only if a VOC sensor (10.0 eV) is installed.
  • Page 58 5 Usage Instructions 5-5 Detection modes <Normal mode basic operation flow> <Gas alarm (First alarm)> <Fresh air adjustment> ▲/AIR button Hold down <Fault alarm <Display mode> (Flow rate abnormality)> <Normal mode> DISP button <Snap logger> <Panic alarm> SHIFT/▼ ▲/AIR button (PANIC) button Hold down SHIFT/▼...

  • Page 59: Leak Check Mode (Shs Sensor Only)

    5 Usage Instructions 5-5 Detection modes 5-5-2 Leak check mode (SHS sensor only) Leak check mode is the mode for detecting target gas (combustible gas [ppm]) leaks using a hot-wire semiconductor type sensor (SHS sensor). Leak check mode allows detection using a full scale of 500 ppm, 1,000 ppm, 2,000 ppm, or 5,000 ppm.
  • Page 60 5 Usage Instructions 5-5 Detection modes NOTE When a thermal conductivity type sensor (TE sensor) or new ceramic type sensor (NCR sensor) is  installed with the same detection target gas as the hot-wire semiconductor type sensor (SHS sensor), the range will automatically switch to suit the detected gas concentration. <Leak check mode operation>...

  • Page 61: Benzene Select Mode (Voc Sensor (10.0 Ev) Only)

    5 Usage Instructions 5-5 Detection modes 5-5-3 Benzene select mode (VOC sensor (10.0 eV) only) If a VOC sensor (10.0 eV) is installed, in addition to VOC concentration measurement in normal mode, benzene select mode increases selectivity for benzene and allows measurement of benzene concentration. In benzene select mode, the benzene measurement pre-filter tube (CF-8338) and tube holder (GF-284) are attached for measurement.
  • Page 62 5 Usage Instructions 5-5 Detection modes Insert the pre-filter tube. <Correctly inserted> <Incorrectly inserted> Hatched area not visible Hatched area visible Insert until the hatched area on the label affixed to the pre-filter tube is no longer visible. Hatched area Attach the cap to the tube holder.
  • Page 63 5 Usage Instructions 5-5 Detection modes <Detaching the tube cutter> You can remove glass fragments cut using the tube cutter by detaching the tube cutter. Detach the tube cutter periodically to dispose of the glass fragments. CAUTION  To prevent the glass fragments inside from falling out, make sure the rubber cap is fitted fully over the tube cutter after attaching or detaching.
  • Page 64 5 Usage Instructions 5-5 Detection modes <Entering the pre-filter tube calibration code> Set the calibration code (printed on the pre-filter packaging) in the product to perform measurement with the pre-filter PID-Pre-Filter (CF-8338). Tube Benzene (10 Tubes) ベンゼン （10 回分） Store in a cool and dark place. 冷暗所保管（0～25℃）...
  • Page 65 5 Usage Instructions 5-5 Detection modes Press the ▲/AIR or SHIFT/▼ button to select [CALIBRATION], then press the POWER/ENTER button. Press the ▲/AIR or SHIFT/▼ button to select [SPAN CAL], then press the POWER/ENTER button. Press the ▲/AIR or SHIFT/▼ button to select [CAL CODE], then press the POWER/ENTER button.

  • Page 66: Performing Fresh Air Adjustment

    5 Usage Instructions 5-6 Performing fresh air adjustment 5-6 Performing fresh air adjustment Perform fresh air adjustment in normal mode and leak check mode before measuring gas concentrations. NOTE Leak check mode can be used only if an SHS sensor is installed. ...
  • Page 67 5 Usage Instructions 5-6 Performing fresh air adjustment <Normal mode only / If a carbon dioxide sensor is installed>  By default, fresh air adjustment is not performed on carbon dioxide sensors. To adjust the zero point for a carbon dioxide sensor, CO zero adjustment must be performed.
  • Page 68 5 Usage Instructions 5-6 Performing fresh air adjustment Hold down the ▲/AIR button on the on the concentration display screen. The fresh air adjustment screen is displayed. Hold down the ▲/AIR button for as long as the screen shown on the right is displayed. Release the ▲/AIR button once [RELEASE AIR KEY] appears on the screen.

  • Page 69: Gas Detection

    5 Usage Instructions 5-7 Gas detection 5-7 Gas detection DANGER Usage  If measuring inside manholes or enclosed spaces, never lean over or look into the manhole or enclosed space. There is a danger that oxygen-deficient air or other gases may be discharged from such locations.
  • Page 70 5 Usage Instructions 5-7 Gas detection  When measuring highly adsorptive gases, be aware that measuring at a flow rate lower than the specified flow rate (0.45 L/min) may result in readings lower than the actual concentration of the detection target gas at the measurement point. ...
  • Page 71 (VOCs). If the reading rises and will not return, the activated carbon filter in the carbon monoxide sensor must be replaced. For information on activated carbon filter replacement, contact RIKEN KEIKI.  Carbon monoxide sensors and hydrogen sulfide sensors may exhibit temporary reading fluctuations if exposed to sudden temperature or humidity variations.
  • Page 72 5 Usage Instructions 5-7 Gas detection NOTE The carbon monoxide sensor (ESR-A1CP) includes a correction function to reduce interference due to  hydrogen. This function works for hydrogen concentrations up to 2,000 ppm. If hydrogen is detected at a concentration of 2,000 ppm or higher, [RICH] is displayed in the concentration display area. While measurement can continue, large errors will arise with carbon monoxide concentration readings due to the significant effects of hydrogen interference.

  • Page 73: Measuring Gas Concentration

    5 Usage Instructions 5-7 Gas detection 5-7-1 Measuring gas concentration Measure the gas concentration in normal mode, leak check mode, or benzene select mode. <Normal mode> Bring the tapered nozzle close to the measurement location. The product sucks in the detection target gas, and the measurement results are displayed on the LCD.
  • Page 74 5 Usage Instructions 5-7 Gas detection CAUTION <Benzene select mode>  The time taken for measurement differs depending on the temperature. Read off the measurement results after the specified measurement time elapses. For information on the measurement procedure, see ‘6-4-3 Switching to benzene select mode’. ...

  • Page 75: Combustible Gas Concentration Range Changeover Points

    5 Usage Instructions 5-7 Gas detection 5-7-2 Combustible gas concentration range changeover points If all of the following conditions are met, the range will automatically switch when the measured combustible gas concentration exceeds the full scale. (See ‘1-3 Checking the detection target gases and product specifications’...

  • Page 76: Confirmation Beep Operation

    5 Usage Instructions 5-7 Gas detection 5-7-3 Confirmation beep operation The confirmation beep is a function that provides audible notification upon bump test expiration or after the occurrence of a gas alarm when the product is operating normally. The buzzer and LEDs operate at preset intervals while measurement is underway. NOTE The confirmation beep operates only in measurement mode and display mode.

  • Page 77: Recording Gas Concentration Logs (Snap Logger)

    5 Usage Instructions 5-8 Recording gas concentration logs (snap logger) 5-8 Recording gas concentration logs (snap logger) In normal mode and leak check mode, up to 256 user-specified gas concentration values can be recorded while measurement is in progress. If more than 256 data items are recorded, the oldest data is overwritten. Hold down the ▲/AIR and SHIFT/▼...

  • Page 78: Turning Off The Power

    5 Usage Instructions 5-9 Turning off the power 5-9 Turning off the power CAUTION  If the concentration display does not return to zero (20.9 % for the oxygen concentration display or around 400 – 500 ppm for the carbon dioxide concentration display) after measurement ends, allow the product to stand in fresh air until the display returns to zero before turning off the power.

  • Page 79: Settings (Display Mode)

    6 Settings (Display Mode) 6-1 Display mode items Settings (Display Mode) 6-1 Display mode items LCD display Description Reference [BENZENE SELECT] Benzene can be selectively measured using the separately sold pre-filter. 6-4-3 Switching to Displayed only when a VOC sensor (10.0 eV) is benzene select mode installed [SELECT PID LIST]...
  • Page 80 6 Settings (Display Mode) 6-1 Display mode items LCD display Description Reference [HC RANGE SELECT] Set the range selection method for the new ceramic type combustible gas sensor (NCR sensor) and thermal conductivity type combustible gas sensor 6-4-1 Setting the (TE sensor) detection target gas concentrations.
  • Page 81 6 Settings (Display Mode) 6-1 Display mode items LCD display Description Reference [USER ID] Set the user ID. 6-4-5 Setting the user ID [STATION ID] 6-4-6 Setting the station Set the station ID. [REC DATA DISP] 6-3-2 Displaying the snap Displays the gas concentration and alarm status logger (gas recorded by the snap logger function.
  • Page 82 6 Settings (Display Mode) 6-1 Display mode items LCD display Description Reference [DATE AND BATTERY] Displays the current date and time (MM/DD/YYYY/ hours/minutes). Also indicates the battery type and battery level. [ALARM POINTS] Displays the full-scale value, first alarm setpoint, second alarm setpoint, third alarm setpoint, STEL 6-3-3 Displaying alarm alarm setpoint, and TWA alarm setpoint for each...
  • Page 83 6 Settings (Display Mode) 6-1 Display mode items LCD display Description Reference [PEAK BAR] Set whether to make the peak value blink in the bar 6-4-9 Peak bar display display to the right of the gas concentration on the setting measurement screen.
  • Page 84 6 Settings (Display Mode) 6-1 Display mode items LCD display Description Reference [言語] (LANGUAGE) Returns the display language to Japanese. 6-4-13 Switching display Displayed if a language other than Japanese is set language to Japanese with the Japan Ex model (Japan Ex model) [CHANGE TO ENGLISH] Returns the display language to English.

  • Page 85: Switching To Display Mode

    6 Settings (Display Mode) 6-2 Switching to display mode 6-2 Switching to display mode Press the DISP button on the normal mode concentration display screen. Pressing the DISP button displays the various setting item screens in sequence. ・ ・ ・ The display returns to the concentration display screen once the display mode item display has ended.

  • Page 86: Checking Settings

    6 Settings (Display Mode) 6-3 Checking settings 6-3 Checking settings 6-3-1 Displaying/clearing the peak value This displays and clears the maximum gas concentration (or minimum oxygen (O ) concentration) measured since the power was turned on. NOTE The peak value is not displayed if the peak display function is disabled in [Disp mode item] in the ...

  • Page 87: Displaying The Snap Logger (Gas Concentration/Alarm Status)

    6 Settings (Display Mode) 6-3 Checking settings 6-3-2 Displaying the snap logger (gas concentration/alarm status) Displays the gas concentration and alarm status recorded by the snap logger function. NOTE The snap logger is not displayed if the snap logger display function is disabled in [Disp mode item] in ...

  • Page 88: Displaying Alarm Setpoints

    6 Settings (Display Mode) 6-3 Checking settings 6-3-3 Displaying alarm setpoints Displays the full-scale value ([F.S.]), first alarm setpoint ([AL1]), second alarm setpoint ([AL2]), third alarm setpoint ([AL3]), STEL alarm setpoint ([STEL]), and TWA alarm setpoint ([TWA]) for each sensor. NOTE The alarm setpoints are not displayed if the alarm setpoint display function is disabled in [Disp mode ...

  • Page 89: Display Mode Settings

    6 Settings (Display Mode) 6-4 Display mode settings 6-4 Display mode settings 6-4-1 Setting the combustible gas sensor range Set the range selection method for the new ceramic type combustible gas sensor (NCR sensor) and thermal conductivity type combustible gas sensor (TE sensor) detection target gas concentrations. Select one of the following: ・...

  • Page 90: Combustible Gas Conversion Gas Selection

    6 Settings (Display Mode) 6-4 Display mode settings NOTE To cancel the setting, press the DISP button in Step 4.  6-4-2 Combustible gas conversion gas selection The combustible gas concentration can be displayed after converting it to the concentration of the conversion gas registered in the product.
  • Page 91 If the above screen is displayed, the conversion function can be used only for those gas types marked “Y” in the “Is conversion possible when restricted?” column. To continue to use the conversion function for gas types marked “N”, contact RIKEN KEIKI. ...

  • Page 92: Switching To Benzene Select Mode

    6 Settings (Display Mode) 6-4 Display mode settings Press the ▲/AIR or SHIFT/▼ button to select the gas type for conversion. Press the POWER/ENTER button. Conversion will be performed for the selected gas type. [END] appears, and the display returns to the screen in Step 1.
  • Page 93 6 Settings (Display Mode) 6-4 Display mode settings Press the POWER/ENTER button. The pump starts operating, and benzene measurement starts. The measurement time countdown is displayed. The time taken for measurement differs depending on the temperature. For information on the measurement time, see the following list.
  • Page 94 6 Settings (Display Mode) 6-4 Display mode settings Press the POWER/ENTER button. STEL value measurement starts. The measurement time countdown is displayed at the bottom of the screen. The measurement time is 900 seconds. To abort measurement, press the RESET button, then press the POWER/ENTER button.

  • Page 95: Volatile Organic Compound (Voc) Conversion Gas Selection

    The list of gas types displayed is as follows:  ・ [USER LIST]: List set using the MT-GX-6100 configuration program (up to 30 for each VOC sensor model) ・ [RECENT]: Recently used gas types (up to 7 for each VOC sensor model) ・...
  • Page 96 6 Settings (Display Mode) 6-4 Display mode settings Press the ▲/AIR or SHIFT/▼ button to select the gas type for conversion. Press the POWER/ENTER button. Information is displayed for the selected gas type. Press the POWER/ENTER button. Once setting is complete, [END] appears, and the display returns to the screen in Step 1.

  • Page 97: Setting The User Id

    6 Settings (Display Mode) 6-4 Display mode settings 6-4-5 Setting the user ID Set the user ID. The user ID is used to identify individual users. Press the DISP button several times on the concentration display screen in normal mode to display the [USER ID] screen.

  • Page 98: Setting The Station Id

    6 Settings (Display Mode) 6-4 Display mode settings 6-4-6 Setting the station ID Set the station ID. The station ID is used to identify measurement points. Press the DISP button several times on the concentration display screen in normal mode to display the [STATION ID] screen.

  • Page 99: Lcd Inversion Setting

    6 Settings (Display Mode) 6-4 Display mode settings 6-4-7 LCD inversion setting This setting inverts the LCD display by 180 degrees. Three settings are available: [AUTO] to invert the display by 180 degrees according to the orientation of the product; [ON] to invert the display by 180 degrees regardless of product orientation; and [OFF] to disable inversion regardless of product orientation.

  • Page 100: Lcd Background Setting

    6 Settings (Display Mode) 6-4 Display mode settings 6-4-8 LCD background setting Inverts black and white of the screen background. Set to [ON] to display white text against a black background. NOTE An example screen is shown on the right with black and white of the background ...

  • Page 101: Peak Bar Display Setting

    6 Settings (Display Mode) 6-4 Display mode settings 6-4-9 Peak bar display setting Set the blinking [ON] or [OFF] for the peak value in the bar display on the right of the concentration display screen. Set to [ON] to make the peak value blink. NOTE The default setting is [OFF].

  • Page 102: Measurement Gas Scroll Setting

    6 Settings (Display Mode) 6-4 Display mode settings 6-4-10 Measurement gas scroll setting Set whether the concentration display screen shows multiple gases simultaneously or displays a single gas. Select one of the following. The default setting is [DISPLAY ALL]. ・ [DISPLAY ALL]: Displays all gas types on a single screen.

  • Page 103: Setting A Bluetooth Device Connection

    6 Settings (Display Mode) 6-4 Display mode settings 6-4-11 Setting a Bluetooth device connection Set the connection to a Bluetooth device when the Bluetooth function is enabled. Setting this item to [ON] allows communication with a smartphone that has the dedicated app installed. NOTE The default setting is [OFF].

  • Page 104: Setting The Buzzer Volume

    6 Settings (Display Mode) 6-4 Display mode settings 6-4-12 Setting the buzzer volume Select the buzzer volume setting. The volume can be selected as [HIGH] or [LOW]. NOTE The default setting is [HIGH].  The buzzer volume setting is retained even when the power is turned off. ...

  • Page 105: Switching Display Language To Japanese (Japan Ex Model)

    6 Settings (Display Mode) 6-4 Display mode settings 6-4-13 Switching display language to Japanese (Japan Ex model) Returns the display language to Japanese. NOTE This can be set if a language other than Japanese is set with the Japan Ex model. The item does not ...

  • Page 106: Switching Display Language To English (Atex/Iecex Model)

    6 Settings (Display Mode) 6-4 Display mode settings 6-4-14 Switching display language to English (ATEX/IECEx model) Returns the display language to English. NOTE This can be set if a language other than English is set with the ATEX/IECEx model. The item does not ...

  • Page 107: Settings (User Mode)

    7 Settings (User Mode) 7-1 User mode display items Settings (User Mode) 7-1 User mode display items LCD display Description Reference [BUMP TEST] Performs a bump test. 8-3 Performing bump tests [GAS CAL] Performs fresh air adjustment, CO zero adjustment, and span adjustment. 8-2 Performing gas zero adjustment is performed if a carbon adjustment...
  • Page 108 7 Settings (User Mode) 7-1 User mode display items LCD display Description Reference [MAN DOWN] Set whether to enable or disable the man down 7-4 Man down alarm alarm and panic alarm, and set the man down and panic alarm alarm times.
  • Page 109 7 Settings (User Mode) 7-1 User mode display items LCD display Description Reference [LANGUAGE] 7-5-4 Setting the Set the screen display language. display language [VERSION] Displays the version information for the modules 7-5-5 Displaying mounted in the product. version information [START MEASURE] The screen shifts in the same way as when pressing the POWER/ENTER button with the...

  • Page 110: Switching To User Mode

    7 Settings (User Mode) 7-2 Switching to user mode 7-2 Switching to user mode Turn off the power. Hold down the POWER/ENTER button. Press POWER/ENTER and ▲/AIR buttons simultaneously. Release the buttons when the buzzer blips once. The power turns on and the [MODE SELECT] screen is displayed.
  • Page 111 7 Settings (User Mode) 7-2 Switching to user mode <Switching from user mode to measurement mode> Press the ▲/AIR or SHIFT/▼ button in user mode, select [START MEASURE], then press the POWER/ENTER button. The product operates in the same way as when turning on the power and enters measurement mode.

  • Page 112: Gas Alarm Settings

    7 Settings (User Mode) 7-3 Gas alarm settings 7-3 Gas alarm settings 7-3-1 Setting alarm setpoints Alarm setpoints can be set individually for each sensor. Alarm setpoints can be set in increments corresponding to the resolution. Setting range Setting range lower limit upper limit Sensor...
  • Page 113 7 Settings (User Mode) 7-3 Gas alarm settings NOTE Set the alarm setpoints as follows: First alarm ≤ Second alarm ≤ Third alarm (for oxygen: Second alarm  ≤ First alarm ≤ Third alarm). Use the product with the alarms set to within a range compatible with product performance. Alarm ...
  • Page 114 7 Settings (User Mode) 7-3 Gas alarm settings Press the ▲/AIR or SHIFT/▼ button to select the alarm setpoint to be set, then press the POWER/ENTER button. Press the ▲/AIR or SHIFT/▼ button to change the value in increments corresponding to the resolution. Press the ▲/AIR or SHIFT/▼...

  • Page 115: Setting Alarm Pattern

    7 Settings (User Mode) 7-3 Gas alarm settings 7-3-2 Setting alarm pattern Set the alarm pattern. This can be set to [LATCHING] or [SELF RESET]. NOTE The default setting is [LATCHING].  If self-latching is selected, the alarm is reset when the RESET button is pressed after the gas ...

  • Page 116: Resetting Alarm Setpoints

    7 Settings (User Mode) 7-3 Gas alarm settings 7-3-3 Resetting alarm setpoints This restores alarm setpoints to their default settings. NOTE This item does not appear in user mode if the sensors installed are not the default sensors.  For information on alarm setpoint default settings, see ‘4-2 Gas alarm setpoints’. ...

  • Page 117: Alarm Silence Setting

    7 Settings (User Mode) 7-3 Gas alarm settings 7-3-4 Alarm silence setting Set whether to enable or disable the function (alarm silence function) for stopping the gas alarm sound by pressing a button when a gas alarm is triggered in normal mode. NOTE The default setting is [OFF].

  • Page 118: Leak Alarm Silence Setting

    7 Settings (User Mode) 7-3 Gas alarm settings 7-3-5 Leak alarm silence setting Set whether to enable or disable the function (alarm silence function) to prevent alarm operation when a gas alarm is triggered in leak check mode. NOTE The default setting is [OFF]. ...

  • Page 119: Disabling The Gas Alarm Function

    7 Settings (User Mode) 7-3 Gas alarm settings 7-3-6 Disabling the gas alarm function Set whether to enable or disable the gas alarm function. Gas alarms will not operate if the gas alarm function is set to [OFF]. The [NO ALM] icon is also displayed at the top of the screen.

  • Page 120: Man Down Alarm And Panic Alarm Settings

    7 Settings (User Mode) 7-4 Man down alarm and panic alarm settings 7-4 Man down alarm and panic alarm settings 7-4-1 Enabling/disabling the man down alarm Set whether to enable or disable the man down alarm function. If this is set to [ON], the man down alarm will be triggered if no movement is detected within the time period set for [MAN DOWN TIME].

  • Page 121: Enabling/Disabling The Panic Alarm

    7 Settings (User Mode) 7-4 Man down alarm and panic alarm settings 7-4-2 Enabling/disabling the panic alarm Set whether to enable or disable the panic alarm function. If this is set to [ON], the user can manually trigger an alarm by holding down the PANIC button. For more information on the panic alarm, see ‘4-6 Panic alarm’.

  • Page 122: Setting The Man Down Alarm Times

    7 Settings (User Mode) 7-4 Man down alarm and panic alarm settings 7-4-3 Setting the man down alarm times Set the times until a man down alarm is triggered. The times can be set individually for the prealarm 1, prealarm 2, and main alarm. For more information on the man down alarm, see ‘4-5 Man down alarm’.

  • Page 123: Enabling/Disabling Co 2 Fresh Air Adjustment

    7 Settings (User Mode) 7-5 Other user mode settings 7-5 Other user mode settings 7-5-1 Enabling/disabling CO fresh air adjustment Set whether to perform fresh air adjustment for the carbon dioxide sensor during fresh air adjustment. If this is set to [ON], fresh air adjustment for the carbon dioxide sensor is performed during fresh air adjustment.

  • Page 124: Setting The Date And Time

    7 Settings (User Mode) 7-5 Other user mode settings 7-5-2 Setting the date and time Set the internal clock date (year, month, day) and time (hours and minutes). Set the date and time in the sequence month → day → year → hours → minutes. Press the ▲/AIR or SHIFT/▼...

  • Page 125: Setting The Date Format

    7 Settings (User Mode) 7-5 Other user mode settings 7-5-3 Setting the date format Set the date display format. The format can be selected from [YYYY/MM/DD], [MM/DD/YYYY], and [DD/MM/YYYY]. NOTE The default setting is [MM/DD/YYYY].  Press the ▲/AIR or SHIFT/▼ button in the user mode menu to select [DATE FORMAT], then press the POWER/ENTER button.

  • Page 126: Setting The Display Language

    7 Settings (User Mode) 7-5 Other user mode settings 7-5-4 Setting the display language Set the screen display language. The following languages are available: • [ENGLISH] • [JAPANESE] • [ITALIAN] • [SPANISH] • [GERMAN] • [FRENCH] • [PORTUGUESE] • [RUSSIAN] •...

  • Page 127: Displaying Version Information

    7 Settings (User Mode) 7-5 Other user mode settings 7-5-5 Displaying version information Displays the version information for the modules mounted in the product. The following information can be displayed: • Main PCB version • PID version • Option (Bluetooth function) version •...
  • Page 128 7 Settings (User Mode) 7-5 Other user mode settings Press the POWER/ENTER button. The display returns to the screen in Step 1. 128 / 198...

  • Page 129: Maintenance

    If the sensors cannot be adjusted using span adjustment, the readings are not restored after fresh air  adjustment, or the readings fluctuate, the sensors are at the end of their life. Contact RIKEN KEIKI. For information on sensor warranty periods, see ‘12-8-2 Sensor warranty’.
  • Page 130 <Maintenance service> RIKEN KEIKI provides services related to regular maintenance, including span adjustment, as well as other adjustments and maintenance. Preparing calibration gas requires dedicated tools, such as gas cylinders of the specified concentration and gas sampling bags.

  • Page 131: Performing Gas Adjustment

    8-2 Performing gas adjustment 8-2 Performing gas adjustment Gas adjustment requires dedicated tools and a calibration gas. Contact RIKEN KEIKI to request gas readjustment. CAUTION  Do not use lighter gas to check the sensitivity of the product. Constituents in lighter gas may degrade sensor performance.
  • Page 132 8 Maintenance 8-2 Performing gas adjustment Using a demand flow valve (and gas cylinder) Gas inlet (GAS IN) Demand flow valve 132 / 198...
  • Page 133 8 Maintenance 8-2 Performing gas adjustment <Recommended calibration gas concentrations and introduction times> Calibration Sensor Detection target gas Calibration gas introduction concentration time Methane (CH Methane (CH NCR-6309 50 %LEL 60 seconds Isobutane (HC (i-C Isobutane (HC (i-C ESR-X13P Oxygen (O Oxygen (O 12.0 % 60 seconds...
  • Page 134 8 Maintenance 8-2 Performing gas adjustment Gas sampling bag  Use different gas sampling bags for each gas type and concentration to ensure accurate adjustment. Gas adjustment location  Do not perform gas adjustment in a confined space.  Do not perform gas adjustment in locations where gases such as silicone and spray can gases are used.
  • Page 135 Tube adjustment refers to the function for adjusting using benzene for the benzene select mode. For  more information, contact RIKEN KEIKI. (For information on the simplified adjustment method, refer to ‘<Entering the pre-filter tube calibration code>’.) WARNING ...

  • Page 136: Performing Fresh Air Adjustment

    8 Maintenance 8-2 Performing gas adjustment 8-2-2 Performing fresh air adjustment Fresh air adjustment must be performed before measuring gas concentration. For information on individual sensor adjustment methods and precautions, see ‘5-6 Performing fresh air adjustment’. Press the ▲/AIR or SHIFT/▼ button in the user mode menu to select [GAS CAL], then press the POWER/ENTER button.
  • Page 137 If fresh air adjustment fails, repeat fresh air adjustment in clean air. If fresh air adjustment still fails, the  sensor is likely to be faulty. Contact RIKEN KEIKI. 137 / 198...

  • Page 138: Performing Co 2 Zero Adjustment

    8 Maintenance 8-2 Performing gas adjustment 8-2-3 Performing CO zero adjustment zero adjustment must be performed if a carbon dioxide sensor is installed. zero adjustment can be performed by using either nitrogen (N ) for the calibration gas or the CF-284 CO removal filter.
  • Page 139 8 Maintenance 8-2 Performing gas adjustment <When using the CF-284 CO removal filter> If nitrogen (N ) is not used for the calibration gas, the CF-284 CO removal filter must be used to remove carbon dioxide (CO ) from the air. Attach the CF-284 CO removal filter with the arrow on the side pointing toward the gas inlet (GAS IN) of the main unit, then draw in air for approximately 60 seconds before starting zero adjustment.
  • Page 140 8 Maintenance 8-2 Performing gas adjustment Press the ▲/AIR or SHIFT/▼ button in the user mode menu to select [GAS CAL], then press the POWER/ENTER button. Press the ▲/AIR or SHIFT/▼ button in the [GAS CAL] menu to select [CO2 ZERO], then press the POWER/ENTER button.
  • Page 141 8 Maintenance 8-2 Performing gas adjustment NOTE If CO zero adjustment fails, [FAIL] appears in the carbon dioxide sensor gas concentration display  area. Press the RESET button to reset the fault alarm (adjustment failure). CO zero adjustment will not be performed if CO zero adjustment failed, and the current gas concentration is displayed.

  • Page 142: Setting Span Adjustment

    8 Maintenance 8-2 Performing gas adjustment 8-2-4 Setting span adjustment The cylinders, calibration gas concentration, and calibration gas can be set for span adjustment. <Set the cylinders> Set the sensor groups (cylinders) for adjustment. When using cylinders with mixtures of multiple gases, gas adjustment can be performed simultaneously for the gases set to the same cylinder.
  • Page 143 8 Maintenance 8-2 Performing gas adjustment Press the ▲/AIR or SHIFT/▼ button in the [GAS CAL] menu to select [SPAN CAL], then press the POWER/ENTER button. Press the ▲/AIR or SHIFT/▼ button to select [CYL SETTING], then press the POWER/ENTER button. Press the ▲/AIR or SHIFT/▼...
  • Page 144 8 Maintenance 8-2 Performing gas adjustment <Set the gas concentration for span adjustment> The calibration gas concentration for span adjustment can be set within the following ranges for each sensor. Gas concentration can be set in increments corresponding to the resolution. WARNING Gas adjustment using a replacement gas To perform gas adjustment using a replacement gas, first set the calibration gas to the replacement gas...
  • Page 145 8 Maintenance 8-2 Performing gas adjustment 0.01 ppm Volatile organic (0 – 10.00 ppm) PIS-003 compounds 0.00 ppm 100.0 ppm 0.1 ppm (VOC, 10.0 eV, ppm) (10.00 – 100.0 ppm) SHS-8661 Isobutane (HC (i-C 10 ppm 0 ppm 2,000 ppm SHS-8661 Methane (CH 10 ppm...
  • Page 146 8 Maintenance 8-2 Performing gas adjustment NOTE Press the ▲/AIR or SHIFT/▼ button when setting the gas concentration for span adjustment to change  the value in increments corresponding to the resolution. Hold down the ▲/AIR or SHIFT/▼ button (for less than seven seconds) when setting the gas ...
  • Page 147 8 Maintenance 8-2 Performing gas adjustment Press the ▲/AIR or SHIFT/▼ button to select [SPAN GAS SELECT], then press the POWER/ENTER button. Press the ▲/AIR or SHIFT/▼ button to select the sensor, then press the POWER/ENTER button. Press the ▲/AIR or SHIFT/▼ button to select the calibration gas for span adjustment, then press the POWER/ENTER button.

  • Page 148: Performing Span Adjustment

    8 Maintenance 8-2 Performing gas adjustment 8-2-5 Performing span adjustment Gas adjustment can be performed for gas types selected from cylinders A to G. Prepare the calibration gas beforehand. (See ‘8-2-1 Preparation for gas adjustment’.) CAUTION  Keep in mind that using a gas mixture to perform span adjustment may affect indication accuracy. This is due to interference by gases other than the target gas.
  • Page 149 8 Maintenance 8-2 Performing gas adjustment Press the ▲/AIR or SHIFT/▼ button in the [SPAN CAL] menu to select [CALIBRATION], then press the POWER/ENTER button. Press the ▲/AIR or SHIFT/▼ button to select the cylinder to be adjusted, then press the POWER/ENTER button.
  • Page 150 8 Maintenance 8-2 Performing gas adjustment NOTE If span adjustment fails, [FAIL] appears in the gas concentration display area for the failed sensor.  Press the RESET button to reset the fault alarm (adjustment failure). Span adjustment will not be performed on the sensor for which span adjustment failed, and the current gas concentration is displayed.

  • Page 151: Performing Bump Tests

    8 Maintenance 8-3 Performing bump tests 8-3 Performing bump tests The product includes a function for performing bump tests. Bump tests can be performed for gas types selected from cylinders A to G. Prepare the bump test gas in the same way as for gas adjustment, and connect it to the main unit. (See ‘8-2-1 Preparation for gas adjustment’.) Bump tests are performed using [BUMP TEST] in user mode.
  • Page 152 8 Maintenance 8-3 Performing bump tests Press the ▲/AIR or SHIFT/▼ button in the user mode menu to select [BUMP TEST], then press the POWER/ENTER button. Press the ▲/AIR or SHIFT/▼ button to select the cylinder to be adjusted, then press the POWER/ENTER button. Pressing the button cycles through the settings in the following sequence: [CYLINDER A] →...

  • Page 153: Performing Alarm Tests

    8 Maintenance 8-4 Performing alarm tests NOTE If the setting to perform gas adjustment after a bump test failed is disabled (the default setting is  enabled), the bump test result is displayed when the bump test ends. In this case, only the bump test result and bump test gas concentration are displayed.

  • Page 154: Cleaning Procedure

    8 Maintenance 8-5 Cleaning procedure 8-5 Cleaning procedure Clean the product if it becomes excessively dirty. Be sure to turn off the power before cleaning, and wipe clean using a rag or cloth soaked in water and firmly wrung out. Do not clean using water, organic solvents or commercially available cleaners for cleaning, as these may cause the product to malfunction.

  • Page 155: Parts Replacement

    Part No. (set of 5): 4777 9064 60 * A function check by a qualified service engineer is required after parts replacement. To ensure safety and the stable operation of the product, request checking by a qualified service engineer. Contact RIKEN KEIKI. 155 / 198...
  • Page 156 A function check by a qualified service engineer is required after sensor replacement. To ensure safety  and the stable operation of the product, request checking by a qualified service engineer. Contact RIKEN KEIKI. The gas sensitivity of VOC sensors may deteriorate if the sensor interior is contaminated by the gas ...

  • Page 157: Dust Filter Replacement

    The dust filter and metal mesh filter are contained inside the main unit.  Do not use filters other than those specified by RIKEN KEIKI. Use of non-approved parts may  adversely affect gas detection performance and allow water to get inside the product.

  • Page 158: Interference Gas Removal Filter Replacement

    8 Maintenance 8-6 Parts replacement 8-6-3 Interference gas removal filter replacement Some sensors contain an interference gas removal filter to remove interference gas. The filter may become dirty and clogged with use, and will need to be replaced depending on the usage conditions. Unscrew the four screws securing the sensor cover, then remove the sensor cover.

  • Page 159: Voc Sensor Maintenance

    8 Maintenance 8-6 Parts replacement 8-6-4 VOC sensor maintenance The gas sensitivity of VOC sensors may deteriorate if the sensor interior is contaminated by the gas being measured. If this occurs, the pellet must be replaced and the lamp must be cleaned. NOTE If the gas sensitivity does not improve even after cleaning, replace both the lamp and pellet.
  • Page 160 8 Maintenance 8-6 Parts replacement <Removing the pellet and lamp> Use the pellet removal tool to remove the pellet and lamp from the VOC sensor main unit. Place the VOC sensor main unit on a clean surface, with the bottom facing down. Fit the pellet removal tool in the side slots of the VOC sensor.
  • Page 161 8 Maintenance 8-6 Parts replacement <Cleaning the lamp> CAUTION  Use clean cotton swabs to clean the lamp. Avoid touching the tip of the cotton swab used to clean the lamp with your fingers. Oil from your fingers may soil the lamp if you touch the tip of the cotton swab. Place a small amount of alumina polishing powder on a clean cotton swab.
  • Page 162 8 Maintenance 8-6 Parts replacement <Mounting the pellet and lamp> Attach the lamp to a new pellet and insert into the VOC sensor main unit. CAUTION  Never reattach a damaged lamp to the pellet. Place a new pellet on a clean, flat surface. O-ring seal Electrode Insert the lamp into the O-ring seal of the new pellet.
  • Page 163 8 Maintenance 8-6 Parts replacement <Installing the VOC sensor> Install the VOC sensor in the main unit and perform gas adjustment. Attach the VOC sensor. Grasp the cylindrical part of the sensor to fit to the main unit. Attach the rubber seal to the sensor. Check to confirm that the filter holders are correctly seated in the rubber seal here.

  • Page 164: Storage And Disposal

    9 Storage and Disposal 9-1 Procedures for storage or when not in use for extended periods Storage and Disposal 9-1 Procedures for storage or when not in use for extended periods The product must be stored in the following environment: •...

  • Page 165: Procedures For Use After Storage

    9 Storage and Disposal 9-2 Procedures for use after storage 9-2 Procedures for use after storage Perform gas adjustment if the product is used again after an extended period of storage. CAUTION  After storage without use, be sure to perform gas adjustment before resuming use. Contact RIKEN KEIKI to request readjustment of the product, including gas adjustment.

  • Page 166: Troubleshooting

    Insert the AC plug and DC plug of the connected. AC adapter correctly. Charging is impossible. ・ There is a fault in the charging circuit. Contact RIKEN KEIKI. (When using lithium ion The charging indicator LED will not light battery unit) ・...
  • Page 167 Fix the problem (e.g., broken pipe, water aspiration). If the problem ・ The flow passage is blocked. is not resolved, contact RIKEN KEIKI. Check the dust filter mounting condition and whether it is clogged ・ The dust filter is clogged.
  • Page 168 Check to confirm that the sensor is installed. correctly installed. If the sensor is faulty, it ・ The sensor is faulty. must be replaced. Contact RIKEN KEIKI. Span adjustment is not ・ The calibration gas concentration Check to confirm that the calibration gas possible.
  • Page 169 (Japan Ex model only) Indicates that the set gas adjustment Either perform gas adjustment yourself [CAL DATE PAST] is expiration date has passed. or contact RIKEN KEIKI to request displayed. (ATEX/IECEx model only) maintenance. [BUMP DATE PAST] is Indicates that the set bump expiration Perform a bump test.

  • Page 170: Reading Abnormalities

    It is difficult to completely eliminate the effects of interference gases such as solvents. Presence of interference gases Contact RIKEN KEIKI for information on countermeasures, such as removal filters. They may be a very small leakage (slow The reading rises (or leakage) of the detection target gas.

  • Page 171: Product Specifications

    11 Product Specifications 11-1 Main unit specifications Product Specifications 11-1 Main unit specifications Item Specifications Model GX-6100 Concentration display LCD digital (full-dot display) Detection method Pump suction type Suction flow rate Minimum 0.45 L/min (open flow rate) Display items Clock, battery level, operation status...
  • Page 172 11 Product Specifications 11-1 Main unit specifications Item Specifications Japan Ex (explosion-proof electrical equipment type certified) model: (with new ceramic type sensor) Ex da ia IIC T4 Ga (without new ceramic type sensor) Ex ia IIC T4 Ga ATEX model: (with new ceramic type sensor) II 1 G Ex da ia IIC T4 Ga (BUL-6100) II 1 G Ex da ia IIC T4 Ga (BUD-6100/Toshiba batteries)

  • Page 173: Sensor Specifications

    11 Product Specifications 11-2 Sensor specifications 11-2 Sensor specifications 11-2-1 Combustible gas sensors CAUTION  Do not install different gas type sensors when using combustible gas sensors. The new ceramic type sensor and thermal conductivity type sensor can be used in combination to detect the same gas type.
  • Page 174 11 Product Specifications 11-2 Sensor specifications  For measurements performed in locations where high-concentration combustible gases are known to be present, select [VOL ONLY] for the new ceramic type combustible gas sensor (NCR sensor) and thermal conductivity type combustible gas sensor (TE sensor) range settings. (See ‘6-4-1 Setting the combustible gas sensor range’.) ...
  • Page 175 11 Product Specifications 11-2 Sensor specifications <Thermal conductivity type> Detection Methane Item target gas Sensor model TE-7561 Explosion-proof specifications Japan Ex and ATEX/IECEx Display range 0 – 100 vol% Detection range 0 – 100 vol% Resolution 1 vol% First alarm Second alarm Third alarm Alarm...
  • Page 176 11 Product Specifications 11-2 Sensor specifications <Non-dispersive infrared type (NDIR)> Detection target Methane Isobutane Item HC (i-C Sensor model DES-3311-3 DES-3311-2 Explosion-proof specifications Japan Ex and ATEX/IECEx Japan Ex and ATEX/IECEx 0 – 100 %LEL/ 0 – 100 %LEL/ Display range 100 %LEL –...
  • Page 177 11 Product Specifications 11-2 Sensor specifications <Hot-wire semiconductor type> Detection target Methane Isobutane Item HC (i-C Sensor model SHS-8661 SHS-8661 Japan Ex and Japan Ex and Explosion-proof specifications ATEX/IECEx ATEX/IECEx Display range 0 – 5,000 ppm 0 – 2,000 ppm Detection range 0 –...
  • Page 178 11 Product Specifications 11-2 Sensor specifications  The zero point may fluctuate if the sensor comes into contact with high-concentration gas continuously for extended periods. If this occurs, perform fresh air adjustment.  If the temperature or humidity changes rapidly between the storage and usage locations, turn on the power and allow the product to stand and acclimatize for about 10 minutes in an environment similar to the usage location before performing fresh air adjustment in fresh air.

  • Page 179: Carbon Dioxide Sensors

    11 Product Specifications 11-2 Sensor specifications 11-2-2 Carbon dioxide sensors <Non-dispersive infrared type (NDIR)> Detection target Carbon dioxide Carbon dioxide Item Sensor model DES-3311-4 DES-3311-1 Japan Ex and Japan Ex and Explosion-proof specifications ATEX/IECEx ATEX/IECEx Display range 0 – 10,000 ppm 0 –...

  • Page 180: Oxygen Sensor

    11 Product Specifications 11-2 Sensor specifications 11-2-3 Oxygen sensor <Electrochemical type> Detection target Oxygen Item Sensor model ESR-X13P Explosion-proof specifications Japan Ex ATEX/IECEx Display range 0 – 40.0 % 0 – 40.0 % Detection range 0 – 25.0 % 0 – 25.0 % Resolution 0.1 % 0.1 %...

  • Page 181: Toxic Gas Sensors

    11 Product Specifications 11-2 Sensor specifications 11-2-4 Toxic gas sensors <Electrochemical type (ESR sensors)> Detection target Hydrogen sulfide Carbon monoxide Item Sensor model ESR-A1DP Explosion-proof specifications Japan Ex ATEX/IECEx Japan Ex ATEX/IECEx Display range 0 – 200.0 ppm 0 – 200.0 ppm 0 –...
  • Page 182 11 Product Specifications 11-2 Sensor specifications CAUTION  The electrolyte consists of sulfuric acid. Do not attempt to disassemble the sensor.  Each sensor has a specified installation position on the main unit. Sensors will not function correctly if installed in the wrong location or not properly oriented. Applying excessive force to install sensors may damage the sensor and main unit.
  • Page 183 11 Product Specifications 11-2 Sensor specifications <Electrochemical type (smart sensors)> Detection target Sulfur dioxide Nitrogen dioxide Hydrogen cyanide Phosphine Item Sensor model ESS-03DH ESS-03DH ESS-03DH ESS-03DH Japan Ex and Japan Ex and Japan Ex and Japan Ex and Explosion-proof specifications ATEX/IECEx ATEX/IECEx ATEX/IECEx...

  • Page 184: Voc Sensors

    11 Product Specifications 11-2 Sensor specifications 11-2-5 VOC sensors <Photoionization type (PID)> Volatile organic Volatile organic Volatile organic Detection Item compounds compounds compounds target gas VOCs VOCs VOCs Sensor model PIS-001A PIS-002A PIS-003 Photoionization energy 10.6 eV 10.6 eV 10.0 eV Explosion-proof specifications Japan Ex and ATEX/IECEx Japan Ex and ATEX/IECEx Japan Ex and ATEX/IECEx VOC: 0 –...

  • Page 185: Appendix

    NOTE The data logger management program sold separately is required to check data recorded using the  data logger function. Contact RIKEN KEIKI for more information. The data logger provides the following five functions: (1) Interval trend Records the changes in measured concentration from the start of measurement until the power is turned off.
  • Page 186 12 Appendix 12-1 Data logger function The 100 most recent events are recorded. If the number of items exceeds 100, the oldest data will be overwritten by the latest data. (5) Adjustment history Records data when adjustment is performed. Records the adjustment time and concentrations before and after adjustment. The 100 most recent adjustment history data items are recorded.

  • Page 187: 100 %Lel Conversion List

    12 Appendix 12-2 100 %LEL conversion list 12-2 100 %LEL conversion list The following table shows the standard conversion for 100 %LEL and ppm. The 100 %LEL values are standard values for both Japan Ex and ATEX/IECEx models. Gas type Standard Methane 50,000 ppm...

  • Page 188: Zero Suppression Function

    (or 20.9 % for an oxygen sensor). NOTE The default setting is enabled. To disable the setting, use the MT-GX-6100 configuration program and  refer to the operating manual. If the setting is disabled, readings may fluctuate due to output variations attributable to sensor characteristics.

  • Page 189: Zero Follower Function

    * The zero follower function is enabled when the power is turned on. NOTE The default setting is enabled. To disable the setting, use the MT-GX-6100 configuration program and  refer to the operating manual. When the setting is disabled, the zero point may fluctuate due to output variation caused by the sensor characteristics.

  • Page 190: Volatile Organic Compound (Voc) Conversion Gas List

    12 Appendix 12-5 Volatile organic compound (VOC) conversion gas list 12-5 Volatile organic compound (VOC) conversion gas list Volatile organic compound (VOC) concentration is normally displayed as isobutylene (C ), but this can be displayed converted to a pre-registered gas. For information on how to configure the settings, see ‘6-4-4 Volatile organic compound (VOC) conversion gas selection’.

  • Page 191: List Of Interference Gases For Electrochemical Type Sensors

    12 Appendix 12-6 List of interference gases for electrochemical type sensors 12-6 List of interference gases for electrochemical type sensors This is a list of interference gases for electrochemical type oxygen and toxic gas sensors. The values indicated here are representative values measured in a laboratory environment using new sensors and filters.
  • Page 192 12 Appendix 12-6 List of interference gases for electrochemical type sensors <ESR-A1CP (CO)> Gas name Chemical formula Gas concentration Reading Hydrogen 500 ppm 7 ppm Sulfur dioxide 25.0 ppm 1 ppm Hydrogen sulfide 24.2 ppm 0 ppm Ammonia 38.6 ppm 0 ppm Chlorine 2.0 ppm...
  • Page 193 12 Appendix 12-6 List of interference gases for electrochemical type sensors <ESS-03DH (SO )> Gas name Chemical formula Gas concentration Reading Hydrogen 2,000 ppm 3.4 ppm Hydrogen sulfide 100 ppm 0.0 ppm Carbon monoxide 500 ppm 2.3 ppm Ammonia 75 ppm 0.0 ppm Chlorine 2 ppm...
  • Page 194 12 Appendix 12-6 List of interference gases for electrochemical type sensors <ESS-03DH (PH )> Gas name Chemical formula Gas concentration Reading Hydrogen 2,000 ppm 0.53 ppm Nitrogen dioxide 6 ppm 1.29 ppm Hydrogen sulfide 100 ppm 25.4 ppm Carbon monoxide 500 ppm 0.12 ppm Ammonia...

  • Page 195: Radio Law Certification

    12 Appendix 12-7 Radio law certification 12-7 Radio law certification This product is certified as complying with radio laws in individual countries and regions as follows. Radio Law Nameplate Attachment Location The following actions are prohibited by radio laws. The user and/or retailer may be subject to punishment if prohibited actions are committed.
  • Page 196 12 Appendix 12-7 Radio law certification RE Directive (EU countries) We declare that this equipment complies with the basic requirements of Directive 2014/53/EU and other relevant provisions. Connect to the network with radio waves of frequency 2.4 GHz band and maximum output 6 dBm. FCC compliance This device complies with part 15 of the FCC Rules.

  • Page 197: Warranty Policy

    2. For information about repairs, maintenance, and after sales servicing, please contact RIKEN KEIKI. 3. When on-site repairs are required at remote locations, we will request that you defray the cost of traveling to the site.
  • Page 198 12 Appendix 12-8 Warranty policy <Sensor warranty period list> Sensor model Detection target gas Warranty period NCR-6309 Isobutane (HC (i-C )) [%LEL] 3 years NCR-6309 Methane (CH ) [%LEL] 3 years ESR-X13P Oxygen (O 3 years ESR-A1DP Hydrogen sulfide (H S)/carbon monoxide (CO) 3 years ESR-A13i...

  • Page 199: Revision History

    Revision history Issue Revision details Issue date First issue (PT0-2520) March, 4, 2025...

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