RKI Instruments GX-3R Pro Operator's Manual
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RKI Instruments GX-3R Pro Operator's Manual

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GX-3R Pro
Operator's Manual
Part Number: 71-0478
Revision: P8
Released: 2/27/20
www.rkiinstruments.com

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  • Page 1 GX-3R Pro Operator’s Manual Part Number: 71-0478 Revision: P8 Released: 2/27/20 www.rkiinstruments.com...
  • Page 2 User Mode bump test or does not respond appropriately, as defined by the user, in Measuring Mode. For more information about bump test and calibration requirements, see IEC 60079-29- GX-3R Pro Operator’s Manual...

  • Page 3: Table Of Contents

    Turning On the GX-3R Pro ........
  • Page 4 Viewing the ROM/SUM (ROM/SUM)........93 Viewing the Radio Standards (RADIO STANDARD) ......94 GX-3R Pro Operator’s Manual...
  • Page 5 Disconnecting a Paired GX-3R Pro ........
  • Page 6 S Detection......... 173 WARNING: Understand manual before operating. Substitution of components may impair intrinsic safety. To prevent ignition of a hazardous atmosphere, batteries must only be changed or charged in an area known to be nonhazardous. GX-3R Pro Operator’s Manual...

  • Page 7: Chapter 1: Introduction

    Overview This chapter briefly describes the GX-3R Pro gas monitor. This chapter also describes the GX-3R Pro Operator’s Manual (this document). Table 1 at the end of this chapter lists the specifications for the GX-3R Pro. About the GX-3R Pro...

  • Page 8: Specifications

    1.0 ppm 25 ppm * The GX-3R Pro is also available set up for general hydrocarbons and calibrated to a combustible gas other than methane, such as isobutane. Consult RKI Instruments, Inc. for further information. Table 2: IR Sensor Specifications...
  • Page 9 5.00 ppm Factory Setting Alarm H 100.00 ppm Factory Setting STEL Alarm 5.00 ppm TWA Alarm 2.00 ppm Table 4: GX-3R Pro Specifications Sampling Diffusion Method Response Time T90 within 30 seconds Display Graphics LCD Display Environmental • 2000 meter maximum altitude Conditions •...
  • Page 10 Approximately 65(H) x 73(W) x 26(D) mm (2.6”H x 2.9”W x 1.0”D) Approximately 120 g (4.2 oz.) Alkaline Battery Pack Version Approximately 65(H) x 73(W) x 34(D) mm (2.6”H x 2.9”W x 1.3”D) Approximately 140 g (4.9 oz.) 10 • Chapter 1: Introduction GX-3R Pro Operator’s Manual...

  • Page 11: About This Manual

    About this Manual The GX-3R Pro Operator’s Manual uses the following conventions for notes, cautions, and warnings. NOTE: Describes additional or critical information. CAUTION: Describes potential damage to equipment. WARNING: Describes potential danger that can result in injury or death.

  • Page 12: Chapter 2: Description

    Figure 1: Component Location Case The GX-3R Pro’s sturdy, high-impact plastic case is radio frequency (RF) resistant and is suitable for use in many environmental conditions, indoors and out. The case is dust proof and water resistant. A clear plastic window on the front of the case allows for LCD viewing. The black bottom cover, located on the bottom of the case, allows access to the filters and sensors.

  • Page 13: Control Buttons

    STEALTH Gas Select Mode item is set to ON. See “Stealth and Vibrator Settings (STEALTH)” on page 160. Sensors The GX-3R Pro uses four sensors to monitor up to 5 gases simultaneously. The sensor retainer and bottom cover hold the sensors in place. The sensors use different detection principles, as described below.

  • Page 14: Filters

    A dummy sensor is installed in any units that have less than 4 sensors. Dummy sensors are factory installed. The flat side of the dummy sensor faces away from the GX-3R Pro and the hollow side faces toward the GX-3R Pro.

  • Page 15: Infrared Communications Port

    Battery Pack The GX-3R Pro is either powered by a rechargeable lithium-ion (Li-ion) battery pack or an alkaline battery pack with 2 AAA batteries (Duracell MN2400 or PC2400). Instruments with a Li-ion battery pack have a charging socket on the back of the instrument. Instruments with an alkaline battery pack have a cover that allows for battery replacement.

  • Page 16: Included Accessories

    Included Accessories Alligator Clip An alligator clip is installed on the back of the GX-3R Pro. The alligator clip can be used to attach the GX-3R Pro to clothing or a belt. Teeth in the alligator clip’s jaws prevent the unit from slipping off.

  • Page 17: Single-Unit Ac Charger

    “Front” and “rear” imprinting on the bottom of the cup correspond to the front and rear of the GX-3R Pro when the calibration cup is installed. In addition, a “front” label on the front of the calibration cup should be visible when viewing the LCD with the calibration cup installed.

  • Page 18: Belt Clip

    (Standalone Mode) or a computer can be used to control the docking station (PC Controlled Mode). See the appropriate SDM-3R manual for more information. RP-3R The RP-3R is a pump that draws sample to the GX-3R Pro. See the RP-3R manual for more information. IrDA Cable Unless your computer has a built-in IrDA port, an IrDA cable is needed to establish communication between the GX-3R Pro and the Datalogging Program.

  • Page 19: Chapter 3: Measuring Mode

    GX-3R Pro’s Measuring Mode. Start Up This section explains how to start up the GX-3R Pro, get it ready for operation, and turn it off. NOTE: The screens illustrated in this section are for a 4-gas + 0 - 10.00% volume CO unit.
  • Page 20 Buzzer sounds double pulsing tone None Action • Option A, Perform calibration: Press The GX-3R Pro cannot be used until a • Option A, Perform calibration: To and release POWER MODE to successful calibration is performed. perform a calibration, press and perform a calibration.
  • Page 21 Buzzer sounds double pulsing tone None Action • Option A, Perform bump test: Press The GX-3R Pro cannot be used until a • Option A, Perform bump test: To and release POWER MODE to successful bump test is performed. Press perform a bump test, press and release perform a bump test.
  • Page 22 50 1200 100.0 vol% 23.5 3.00 7:49 %LEL ALARM H 100 2000 200.0 vol% 40.0 10.00 7:49 FULL SCALE vol% 3.00 7:49 STEL %LEL vol% 19.5 0.50 7:49 WARNING vol% 0.50 22 • Chapter 3: Operation GX-3R Pro Operator’s Manual...
  • Page 23 USER ID STATION ID If the GX-3R Pro experiences a sensor failure during start up, the display shows which sensor failed and the buzzer sounds a double pulsing tone once per second. In the example below, the combustible gas sensor failed.

  • Page 24: Performing A Demand Zero

    7:49 LIMITED HC GAS LIST 12 . At the end of the 45 second warmup, the GX-3R Pro begins monitoring for gas in Measuring Mode. The Measuring Mode Screen displays the current gas reading for each target gas. 7:49...

  • Page 25: Measuring Mode Operation

    OFF, the GX-3R Pro gives periodic indications to confirm that it’s operating or to indicate a non-compliance (see pg.86 for instructions). Monitoring an Area Start up the GX-3R Pro as described above in “Start Up” on page 19. It is now in Measuring Mode. 7:49...

  • Page 26: Combustible Gas Detection

    Perform a bump test as described on pg.54. If you suspect that the GX-3R Pro is not operating correctly: a. Take the GX-3R Pro to a fresh air environment and perform a demand zero as described on pg.24. b. Perform a bump test as described on pg.54.

  • Page 27: Oxygen-Enriched Atmospheres

    7.69 Overscale Protection The GX-3R Pro protects the combustible gas sensor by temporarily turning off the sensor power if levels exceeding 100% LEL are detected. Nevertheless, combustible gas concentrations above 100% LEL can still affect the zero level or calibration of the combustible gas sensor.

  • Page 28: Co2 Detection

    The GX-3R Pro buzzer sounds an alarm, the LEDs flash, and the vibrator pulses when any sort of alarm condition or failure occurs. If the GX-3R Pro is operating in Stealth Mode, the buzzer does not sound and the vibrator’s operation depends on the VIBRATION setting in Gas Select Mode’s STEALTH menu item.
  • Page 29 Dead Battery Alarm • Gas readings disappear and FAIL Double pulsing tone once per BATTERY appears at the bottom of second the LCD • Alarm LEDs flash once per second GX-3R Pro Operator’s Manual Chapter 3: Operation • 29...
  • Page 30 • High-low tone sounding Alarm LCD and the gas readings disappear twice per second • Alarm LEDs flash in circle sequence • Vibrator pulses twice per twice per second second • Backlight turns on 30 • Chapter 3: Operation GX-3R Pro Operator’s Manual...

  • Page 31: Responding To Alarms

    WARNING: An over range condition may indicate an extreme combustible gas, toxic gas, or oxygen concentration. Confirm the gas concentration with a different GX-3R Pro or with another gas detecting device. CAUTION: High off-scale readings may indicate an explosive concentration.
  • Page 32 Responding to Battery Alarms WARNING: The GX-3R Pro is not operational as a gas monitoring device during a dead battery alarm. Take the Model GX-3R Pro to a non-hazardous area and replace or recharge the batteries as described on pg.97 and pg.99.
  • Page 33 CAUTION: There will be no datalogging function if you operate the instrument after a 031 system failure. Contact RKI Instruments, Inc. as soon as possible. Responding to a Man Down Warning 1 and Warning 2 The Man Down Warning 1 and Warning 2 alarms occur after the WARNING 1 TIME and WARNING 2 TIME, respectively, has passed since the last movement of the instrument.

  • Page 34: Data Logging

    The data logging capacity depends on how often the GX-3R Pro stores data, how many channels are active, and how often the GX-3R Pro is turned on and off. The table below illustrates how much data logging time is available for the various interval times. It assumes that the unit has four sensors, is only turned on once, and there are no alarm occurrences.

  • Page 35: Chapter 4: Display Mode

    AUTO: The LCD automatically flips as the instrument is rotated to remain readable whether the instrument is right side up or upside down. (pg.45) OFF (factory setting): The LCD stays right side up relative to the instrument. GX-3R Pro Operator’s Manual Chapter 4: Display Mode • 35...

  • Page 36: Tips For Using Display Mode

    To exit from an entered-information screen and go back to the main menu, press and release POWER MODE. NOTE: Each screen displays for 20 seconds. If you do not press a button for 20 seconds, the GX-3R Pro automatically returns to Measuring Mode. 36 • Chapter 4: Display Mode GX-3R Pro Operator’s Manual...

  • Page 37: Peak Screen (Peak)

    (lower for oxygen), the peak reading is cleared, or the GX-3R Pro is turned off. The lunch break feature enables the GX-3R Pro to save peak readings when it is turned off so it can continue with the same peaks when it is turned on again. See pg.85 for instructions to turn the lunch break feature on (default is off).

  • Page 38: Twa Screen (Twa)

    TWA is cleared when the GX-3R Pro is turned off. If LUNCH BREAK is set to ON, the GX-3R Pro will remember TWA readings when it is turned off so it can continue them when it is turned on again. See pg.85 for instructions to turn the lunch break feature on (default is off).
  • Page 39 While in Display Mode, press and release POWER MODE until HC GAS LIST appears. The current setting displays on the top line. 7:49 7:49 CHANGE : AIR NO : MODE HC GAS LIST HC GAS LIST GX-3R Pro Operator’s Manual Chapter 4: Display Mode • 39...

  • Page 40: User Id Screen (User Id)

    ID DISPLAY in Maintenance Mode is set to ON (factory setting is OFF). Use this screen to select a user ID from the 128 user IDs stored in the GX-3R Pro’s memory. Before a user ID is selected on a brand new instrument, the user ID is “----------”. The factory- installed user IDs have a “U_ID_XXX”...

  • Page 41: Station Id Screen (Station Id)

    ID DISPLAY in Maintenance Mode is set to ON (factory setting is OFF). Use this screen to select a station ID from the 128 station IDs stored in the GX-3R Pro’s memory. Before a station ID is selected on a brand new instrument, the station ID is “----------”.

  • Page 42: Last Successful Bump Test Date (Bump Data)

    This screen only appears if BUMP REMINDER is set to ON in User Mode. While in Display Mode, press and release POWER MODE until BUMP DATA appears. 7:49 YES : AIR NO : MODE BUMP DATA 42 • Chapter 4: Display Mode GX-3R Pro Operator’s Manual...

  • Page 43: Date, Time, And Temperature Screen (Date)

    The DATE screen shows the date and time of the instrument and the temperature of the surrounding area. While in Display Mode, press and release POWER MODE until DATE appears. 7:49 MM/DD/YYYY 1/14/2019 7:49 DATE ° GX-3R Pro Operator’s Manual Chapter 4: Display Mode • 43...

  • Page 44: Alarm Points Screen (Alarm Points)

    19.5 0.50 3.00 WARNING STEL 7:49 7:49 %LEL 30.0 vol% vol% 18.0 3.00 0.50 ALARM Press and release POWER MODE to return to the ALARM POINTS item in Display Mode. 44 • Chapter 4: Display Mode GX-3R Pro Operator’s Manual...

  • Page 45: Screen Inversion On/Off (Invert Select)

    Press and release AIR. The current setting flashes. Use AIR to display the desired setting. Press and release POWER MODE to save the setting and return to the LCD BACKGROUND screen. GX-3R Pro Operator’s Manual Chapter 4: Display Mode • 45...

  • Page 46: Turning Bluetooth On/Off (Bluetooth)

    If BLE Auto Shut Off When Idle, accessible in the Datalogging or SDM-3R Program, is selected (factory setting) and if the GX-3R Pro does not pair to a phone in the first 5 minutes after startup, the GX-3R Pro’s Bluetooth gets shut off to conserve battery life.

  • Page 47: Changing Instrument Language Back To English (Language)

    7:49 CHANGE CHANGE TO ENGLISH TO ENGLISH YES : AIR NO : MODE Press and release POWER MODE to confirm that you want to change the language back to English. GX-3R Pro Operator’s Manual Chapter 4: Display Mode • 47...

  • Page 48: Chapter 5: User Mode And Calibration

    Chapter 5: User Mode and Calibration Overview This section describes the GX-3R Pro in User Mode. See Table 12 below for a list of the items found in User Mode, the page that the menu item’s instructions can be found on, and a short description of the menu item.
  • Page 49 Measuring Mode. CANNOT USE: Cannot enter Measuring Mode until a successful bump test is performed. NO EFFECT: A screen indicates that bump test is due but warmup sequence continues. GX-3R Pro Operator’s Manual Chapter 5: User Mode and Calibration • 49...
  • Page 50 ON: Lunch break feature is on. At startup, instrument asks if you want to resume TWA and (pg.85) PEAK readings. OFF (factory setting): Lunch break feature is off. Instrument resets TWA and PEAK readings every time it’s turned on. 50 • Chapter 5: User Mode and Calibration GX-3R Pro Operator’s Manual...
  • Page 51 : 0.20 ppm ZERO Not intended for field adjustment. The default setting is ON for every channel except oxygen. FOLLOWER Oxygen channel does not support zero follower functionality. (pg.90)** GX-3R Pro Operator’s Manual Chapter 5: User Mode and Calibration • 51...

  • Page 52: Entering User Mode

    The GX-3R Pro is not in operation as a gas detector while in User Mode. Take the GX-3R Pro to a non-hazardous location and turn it off if it is on. Press and hold AIR, then press and hold POWER MODE. Release the buttons when you hear a beep.

  • Page 53: Tips For Using User Mode

    Immediately press POWER MODE and then release both buttons. • To exit an entered menu item without saving a change, press and hold AIR and POWER MODE for a few seconds. GX-3R Pro Operator’s Manual Chapter 5: User Mode and Calibration • 53...

  • Page 54: Performing A Bump Test (Bump Test)

    Confirm that the regulator knob is turned all the way clockwise. Screw the 0.25 LPM fixed flow regulator onto the calibration cylinder. Install the calibration cup onto the GX-3R Pro. Use the label and imprinting to make sure that the calibration cup gets installed in the correct orientation relative to the GX-3R Pro.
  • Page 55 Toxic sensors are assigned to Cylinder D or Cylinder E. Make sure the GX-3R Pro has been turned on for at least 45 seconds before continuing. 10 . Turn the regulator knob counterclockwise to open the regulator. 11 . With the appropriate Bump screen displayed, press and release POWER MODE.
  • Page 56 Auto start after successful cal set to on? (default is on) *NOTE: Auto start after successful bump/cal parameters set using Datalogging or SDM-3R PC Programs. Figure 7: Bump Test Flow Chart 56 • Chapter 5: User Mode and Calibration GX-3R Pro Operator’s Manual...
  • Page 57 6. After the last cylinder is bump tested, press and release POWER MODE to go to the START item in the BUMP menu. 7. Press and release POWER MODE to enter Measuring Mode. GX-3R Pro Operator’s Manual Chapter 5: User Mode and Calibration • 57...
  • Page 58 6. Use AIR to scroll to START and press %LEL MAINTE 7:49 12.0 and release POWER MODE to enter %LEL Measuring Mode. 7. Calibrate the GX-3R Pro as soon as 11.9 possible. 11.9 BUMP TEST BUMP TEST MAINTE 7:49 %LEL 20.5...
  • Page 59 7. Press and release POWER MODE to return to the START item in the BUMP enter Measuring Mode. menu. 8. Press and release POWER MODE to enter Measuring Mode. GX-3R Pro Operator’s Manual Chapter 5: User Mode and Calibration • 59...

  • Page 60: Performing A Calibration (Gas Cal)

    (combustible gas, O , CO, H MAINTE 7:49 %LEL 20.9 AIR CAL Make sure the GX-3R Pro has been turned on for at least 45 seconds before continuing. 60 • Chapter 5: User Mode and Calibration GX-3R Pro Operator’s Manual...
  • Page 61 Confirm that the regulator knob is turned all the way clockwise. Screw the 0.25 LPM fixed flow regulator onto the calibration cylinder. Install the calibration cup onto the GX-3R Pro. Use the label and imprinting to make sure that the calibration cup gets installed in the correct orientation relative to the GX-3R Pro.
  • Page 62 CO2 ZERO CAL AUTO CAL GAS CAL Make sure the GX-3R Pro has been turned on for at least 45 seconds before continuing. Press and release POWER MODE. The CO gas reading flashes and the bottom of the screen indicates “CO2 ZERO CAL”...
  • Page 63 19.5% is acceptable. CAUTION: Although the GX-3R Pro can be calibrated with an oxygen concentration of up to 19.5%, RKI Instruments, Inc. recommends that a multi-gas cylinder have an oxygen concentration in the range of 10% - 16% oxygen.
  • Page 64 Install the calibration cup onto the GX-3R Pro. Use the label and imprinting to make sure that the calibration cup gets installed in the correct orientation relative to the GX-3R Pro. Be sure the calibration cup is pushed on all the way.
  • Page 65 Toxic sensors are assigned to Cylinder D or Cylinder E. Make sure the GX-3R Pro has been turned on for at least 45 seconds before continuing. Press and release POWER MODE. The gas readings flash and the bottom of the screen indicates “AUTO CAL” and “APPLY GAS”.
  • Page 66 Auto start after successful cal set to on? (default is on) *NOTE: Auto start after successful cal parameter set using Datalogging or SDM-3R PC Programs. Figure 10: Calibration Flow Chart 66 • Chapter 5: User Mode and Calibration GX-3R Pro Operator’s Manual...
  • Page 67 10. After the last cylinder is calibrated, the instrument continues to the START MEASURE item in the AUTO CAL menu. 11. Remove the calibration cup. 12. Press and release POWER MODE to enter Measuring Mode. GX-3R Pro Operator’s Manual Chapter 5: User Mode and Calibration • 67...
  • Page 68 7. Remove the calibration cup. 8. The instrument continues to the START MEASURE item in the AUTO CAL menu. 9. Press and release POWER MODE to enter Measuring Mode. 68 • Chapter 5: User Mode and Calibration GX-3R Pro Operator’s Manual...
  • Page 69 Use AIR to scroll to SETTING CAL--P. MAINTE 7:49 SETTING CAL--P Press and release POWER MODE. The combustible gas channel displays. MAINTE %LEL - - - - SETTING CAL--P GX-3R Pro Operator’s Manual Chapter 5: User Mode and Calibration • 69...
  • Page 70 11 . Repeat Step 7 through Step 10 for any other channels that need to be changed. 12 . Use AIR to place the cursor next to ESCAPE. 70 • Chapter 5: User Mode and Calibration GX-3R Pro Operator’s Manual...
  • Page 71 GAS CAL Press and release POWER MODE. The Auto Cal screen for gases assigned to Cylinder A displays. Use AIR to scroll to CYL SETTING. MAINTE 7:49 CYL SETTING GX-3R Pro Operator’s Manual Chapter 5: User Mode and Calibration • 71...
  • Page 72 Use AIR to change the cylinder assignment. The choices are A, B, C, D, and E. 10 . Press and release POWER MODE to save the change. The cylinder assignment stops flashing and the unit returns to the channel selection screen. 72 • Chapter 5: User Mode and Calibration GX-3R Pro Operator’s Manual...

  • Page 73: Setting Calibration Parameters (Cal Setting)

    CAL SETTING CAL REMINDER ON (factory setting): The GX-3R Pro gives an indication at start up if it is due for calibration. The type of indication depends on the CAL EXPIRED setting (see pg.74). OFF: The GX-3R Pro does not give an indication at start up if it is due for calibration.
  • Page 74 Press and release AIR to continue without calibrating or POWER MODE to perform a calibration. CANNOT USE: The GX-3R Pro gives an indication at start up if calibration is past due. Press and release POWER MODE to enter User Mode and perform a calibration. Pressing AIR has no effect.

  • Page 75: Setting Bump Test Parameters (Bump Setting)

    CAL SETTING BUMP SETTING MAN DOWN USER MODE Press and release POWER MODE. The BUMP SETTING menu appears. MAINTE 7:49 BUMP PARAMETER BUMP REMINDER BUMP INTERVAL BUMP SETTING GX-3R Pro Operator’s Manual Chapter 5: User Mode and Calibration • 75...
  • Page 76 While in the BUMP SETTING\BUMP PARAMETER menu, use AIR to place the cursor next to TOLERANCE. MAINTE 7:49 GAS TIME TOLERANCE CAL TIME BUMP PARAMETER Press and release POWER MODE. The current setting flashes. 76 • Chapter 5: User Mode and Calibration GX-3R Pro Operator’s Manual...
  • Page 77 For example, if the CAL TIME is set to 90 seconds and the GAS TIME is set to 30 seconds, if the bump test fails, the GX-3R Pro will only be exposed to gas for an additional 60 seconds. The available values are 90 seconds (factory setting), and 120 seconds.
  • Page 78 PARAMETER menu. BUMP REMINDER ON: The GX-3R Pro gives an indication at start up if it is due for bump testing. The type of indication depends on the BUMP EXPIRED setting (see pg.79). OFF (factory setting): The GX-3R Pro does not give an indication at start up if it is due for bump testing.
  • Page 79 MODE to perform a bump test. CANNOT USE: The GX-3R Pro gives an indication at start up if a bump test is past due. Press and release POWER MODE to enter User Mode and perform a bump test. Pressing AIR has no effect.

  • Page 80: Adjusting Man Down And Panic Settings (Man Down)

    While in the MAN DOWN menu, use AIR to place the cursor next to MAN DOWN. MAINTE 7:49 MAN DOWN PANIC MAN DOWN TIME MAN DOWN MENU Press and release POWER MODE. The current setting flashes. Use AIR to display the desired setting. 80 • Chapter 5: User Mode and Calibration GX-3R Pro Operator’s Manual...
  • Page 81 90 seconds While in the MAN DOWN menu, use AIR to place the cursor next to MAN DOWN TIME. MAINTE 7:49 PANIC MAN DOWN TIME ESCAPE MAN DOWN MENU GX-3R Pro Operator’s Manual Chapter 5: User Mode and Calibration • 81...

  • Page 82: Alarm Settings (Alarm Setting)

    MAINTE 7:49 MAN DOWN ALARM SETTING LUNCH BREAK USER MODE Press and release POWER MODE. The first channel displays. MAINTE 7:49 %LEL - - - - ALARM SETTING 82 • Chapter 5: User Mode and Calibration GX-3R Pro Operator’s Manual...
  • Page 83 ALARM SETTING - - - - ALARM SETTING MAINTE 7:49 MAINTE 7:49 DEFAULT ALM--P - - - - MAINTE 7:49 ALARM SETTING ESCAPE Press and release POWER MODE. GX-3R Pro Operator’s Manual Chapter 5: User Mode and Calibration • 83...
  • Page 84 The instrument returns to the ALARM SETTING menu. Repeat Step 1 - Step 7 to change the alarm points for other channels. See “ESCAPE” on page 85 to return to User Mode. 84 • Chapter 5: User Mode and Calibration GX-3R Pro Operator’s Manual...

  • Page 85: Updating The Lunch Break Setting (Lunch Break)

    TWA and PEAK readings and the time in operation from the last time the GX-3R Pro was used or start collecting new readings and reset the time in operation. While in User Mode, use AIR to place the cursor next to LUNCH BREAK.

  • Page 86: Setting The Confirmation Beep And Non-Compliance Indicator (Confirmation)

    OFF (factory setting): The GX-3R Pro does not provide a confirmation alert or non- compliance indicator. LED: The GX-3R Pro’s LEDs double flash as often as defined by the BEEP INTERVAL parameter to verify that the instrument is operating. BUZZER: The GX-3R Pro’s buzzer double beeps as often as defined by the BEEP INTERVAL parameter to verify that the instrument is operating.
  • Page 87 While in the CONFIRMATION menu, use AIR to place the cursor next to ESCAPE. Press and release POWER MODE. The instrument returns to User Mode. See “Returning to Measuring Mode (START MEASURE)” on page 95 to return to Measuring Mode. GX-3R Pro Operator’s Manual Chapter 5: User Mode and Calibration • 87...

  • Page 88: Auto Backlight In Low Light (Auto Backlight)

    Auto Backlight in Low Light (AUTO BACKLIGHT) The GX-3R Pro has a luminescence sensor that allows the instrument to detect how bright an environment is. ON (factory setting): The instrument’s backlight automatically turns on in a low light environment. OFF: The instrument’s backlight does not automatically turn on in a low light environment.

  • Page 89: Turning The Key Tone On/Off (Key Tone)

    Press and release POWER MODE to save the setting and return to User Mode. See “Returning to Measuring Mode (START MEASURE)” on page 95 to return to Measuring Mode. GX-3R Pro Operator’s Manual Chapter 5: User Mode and Calibration • 89...

  • Page 90: Reading Units For Ir Sensor (Ir Unit Select)

    Press and release POWER MODE to save the setting and return to User Mode. See “Returning to Measuring Mode (START MEASURE)” on page 95 to return to Measuring Mode. 90 • Chapter 5: User Mode and Calibration GX-3R Pro Operator’s Manual...

  • Page 91: Co2 Fresh Air Adjustment On/Off (Co2 Air Setting)

    Repeat Step 3 and Step 4 to enter the month, day, hours, and minutes settings. The date and time are saved and the instrument returns to User Mode. See “Returning to Measuring Mode (START MEASURE)” on page 95 to return to Measuring Mode. GX-3R Pro Operator’s Manual Chapter 5: User Mode and Calibration • 91...

  • Page 92: Setting The Date Format (Date Format)

    Measuring Mode. Changing the Instrument Language (LANGUAGE) The available languages for the GX-3R Pro are: English (factory setting), Japanese, Italian, Spanish, German, French, Portuguese, Russian, Korean, and Chinese (TC). If you change the language to anything other than English, the LANGUAGE screen appears in Display Mode, allowing you to change the instrument language back to English.

  • Page 93: Turning The Password On/Off (User Password)

    Turning the Password On/Off (USER PASSWORD) ON: The GX-3R Pro prompts you for a password when you enter User Mode. The factory-set password is 0405 but it can be changed as desired. OFF (factory setting): No password is required to enter User Mode.

  • Page 94: Viewing The Radio Standards (Radio Standard)

    Contains FCC ID: RYYEYSHJN RADIO STANDARD Press and release POWER MODE to return to User Mode. See “Returning to Measuring Mode (START MEASURE)” on page 95 to return to Measuring Mode. 94 • Chapter 5: User Mode and Calibration GX-3R Pro Operator’s Manual...

  • Page 95: Returning To Measuring Mode (Start Measure)

    While in User Mode, use AIR to place the cursor next to START MEASURE. MAINTE 7:49 ROM / SUM RADIO STANDARD START MEASURE USER MODE Press and release POWER MODE. The instrument begins its start-up sequence. GX-3R Pro Operator’s Manual Chapter 5: User Mode and Calibration • 95...

  • Page 96: Chapter 6: Maintenance

    Chapter 6: Maintenance Overview This chapter describes troubleshooting procedures for the GX-3R Pro. It also includes procedures for instrument cleaning, replacing and recharging the batteries, and replacing various consumable parts. WARNING: RKI Instruments, Inc. recommends that service, calibration, and repair of RKI Instruments be performed by personnel properly trained for this work.

  • Page 97: Instrument Cleaning

    Instrument Cleaning Clean the GX-3R Pro with a cloth dampened with water if it becomes excessively dirty. Do not use alcohol or other cleaning solvents. Replacing the Batteries (Alkaline Version) NOTE: Use Duracell MN2400 or PC2400 alkaline batteries or RKI Instruments, Inc.
  • Page 98 Turn off the GX-3R Pro. WARNING: Do not remove the batteries while the GX-3R Pro is on. Use a coin or a screwdriver to turn the battery cover counterclockwise. Carefully remove the old alkaline batteries. Verify that the battery compartment and electrical contacts are clean.

  • Page 99: Recharging The Batteries (Li-Ion Version)

    Plug the AC adapter into an electrical outlet. Connect the charging jack on the charging cable to the charging socket on the GX-3R Pro. When properly connected, a green LED turns on at the top of the GX-3R Pro. PO W ER...

  • Page 100: Replacing The Buzzer Cover

    CAUTION: The buzzer cover, sensors, filters, and alkaline batteries are the only user- serviceable parts in the GX-3R Pro. Do not replace or modify any other part. Combustible Gas Sensor Filter: The H S filter disk is dark red in color and although it may darken over time, its color is not indicative of remaining filter life.
  • Page 101 Turn the GX-3R Pro upside down. Use a small Phillips screwdriver to unscrew the two screws holding the bottom cover to the rest of the GX-3R Pro’s case. Only unscrew them until the heads are flush with the edge of the bottom cover.

  • Page 102: Replacing The Hydrophobic Dust Filter

    11 . Reinstall the sensor retainer over the sensors. 12 . Reattach the bottom cover to the GX-3R Pro. Push it onto the GX-3R Pro until it snaps into place. 13 . Reinstall the two screws that were loosened in Step 3.

  • Page 103: Replacing A Sensor

    Side View Top View Figure 15: Replacing the Hydrophobic Dust Filter Reattach the bottom cover to the GX-3R Pro. Push it onto the GX-3R Pro until it snaps into place. Reinstall the two screws that were loosened in Step 3.
  • Page 104 10 . If the filter gasket/hydrophobic dust filter came out, reinstall it with the gasket tabs facing down. 11 . Reattach the bottom cover to the GX-3R Pro. Push it onto the GX-3R Pro until it snaps into place. 12 . Reinstall the two screws that were loosened in Step 3.

  • Page 105: Chapter 7: Storage And Disposal

    • To store a Li-ion battery pack by itself, discharge the battery to 1 bar in the battery icon and then remove it from the GX-3R Pro. • To store an alkaline pack by itself, remove the batteries.

  • Page 106: Chapter 8: General Parts List

    Chapter 8: General Parts List Table 15 lists part numbers for the GX-3R Pro’s replacement parts and accessories. Table 15: General Parts List Part Number Description 06-1248RK-03 Calibration kit tubing, 3 foot length 10-1087 Screw, for bottom cover and for battery pack...
  • Page 107 49-1625 Li-ion battery pack 49-1626 Alkaline battery pack 65-7004 Dummy sensor 71-0478 Operator’s Manual, GX-3R Pro (this document) 71-0491 Operator’s Manual, GX-3R Datalogging Program 81-0000RK-51 Calibration cylinder, 200 ppm H in air, 34 liter steel 81-0071RK-01 Calibration cylinder, 5,000 ppm CO...
  • Page 108 S) sensor ESR-X13P-OXY Oxygen sensor IRR-0409 Carbon dioxide (CO ) sensor, 0 - 10% volume IRR-0433 Carbon dioxide (CO ) sensor, 0 - 10,000 ppm NCR-6309 Combustible gas sensor, catalytic 108 • Chapter 8: General Parts List GX-3R Pro Operator’s Manual...

  • Page 109: Appendix A: Rk Link Phone App

    If a paired GX-3R Pro is turned off, it must be paired with the app again when it is turned back If the app is closed while a GX-3R Pro is paired, the GX-3R Pro must be paired with the app again when the app is reopened.
  • Page 110 If your phone’s Bluetooth is not turned on, the app will prompt you to turn it on. Press “Allow”. Then press “Pairing” again. Select the GX-3R Pro you’d like to pair with then press “Pairing”. 110 • Appendix A: RK Link Phone App...
  • Page 111 A “Connection completed” message appears once the GX-3R Pro is connected to your phone. Press “OK”. The Measuring Mode screen appears. GX-3R Pro Operator’s Manual Appendix A: RK Link Phone App • 111...

  • Page 112: Searching For A Paired Gx-3R Pro

    Searching for a Paired GX-3R Pro Using the app’s detector search function allows you to find a connected GX-3R Pro that may have been set down somewhere. NOTE: This feature does not work if the GX-3R Pro is operating in stealth mode.

  • Page 113: Disconnecting A Paired Gx-3R Pro

    After 5 minutes, the GX-3R Pro’s Bluetooth gets shut off to conserve battery life. If you want to pair to the GX-3R Pro after 5 minutes of disconnection, you will need to turn the Bluetooth back on in Display Mode.

  • Page 114: Adjusting App Notification Settings

    Adjusting App Notification Settings Press the button in the upper right corner of the app. Press “Application settings”. 114 • Appendix A: RK Link Phone App GX-3R Pro Operator’s Manual...
  • Page 115 • Vibration type: Define the app’s vibration pattern. • Display setting: Indicates the time format and time zone. This is not adjustable. GX-3R Pro Operator’s Manual Appendix A: RK Link Phone App • 115...

  • Page 116: Defining Owner Information

    Defining Owner Information Owner information can be defined with or without a GX-3R Pro paired with the app. Owner information gets sent out with email alerts along with the station ID and user ID from the GX- 3R Pro. Press the button in the upper right corner of the app.
  • Page 117 Press “Owner information setting” at the bottom of the screen. You may need to scroll down to make it visible. Type in the name, company name, and department name. GX-3R Pro Operator’s Manual Appendix A: RK Link Phone App • 117...

  • Page 118: Setting Up Email/Text Alerts

    Setting Up Email/Text Alerts Email and text alert setup can be done with or without a GX-3R Pro paired with the app. Figure 17: Email Alert for Past Due Bump Test Figure 18: Text Alert for CO Warning and Alarm 118 •...
  • Page 119 Press the button in the upper right corner of the app. GX-3R Pro Connected GX-3R Pro Disconnected Press “Application settings”. GX-3R Pro Operator’s Manual Appendix A: RK Link Phone App • 119...
  • Page 120 Make sure “Group notification settings” is turned on. Press “Notification Settings”. 120 • Appendix A: RK Link Phone App GX-3R Pro Operator’s Manual...
  • Page 121 Make sure “Application Server” is selected in the “Text Service” and “Email Service” sections. Press “Application Server Settings”. GX-3R Pro Operator’s Manual Appendix A: RK Link Phone App • 121...
  • Page 122 Enter your first name, last name, phone number, and email address. All fields are required for the notifications to function. Press “OK”. A User ID is automatically generated. 122 • Appendix A: RK Link Phone App GX-3R Pro Operator’s Manual...
  • Page 123 Use your phone’s “Back” button or the button to get back to the “Application Settings” screen. 10 . Press “Email notification settings” at the bottom of the screen. GX-3R Pro Operator’s Manual Appendix A: RK Link Phone App • 123...
  • Page 124 • MANDOWN: Sends an alert or notification for a man down alarm. • FAULT: Sends an alert or notification for any sort of instrument, battery, or sensor failure 124 • Appendix A: RK Link Phone App GX-3R Pro Operator’s Manual...
  • Page 125 15 . To add contacts from your phone: a. Press the button. b. Press “Register from Phone Book”. You may need to scroll down to make “Register from Phone Book” visible. GX-3R Pro Operator’s Manual Appendix A: RK Link Phone App • 125...
  • Page 126 Press “Delete registered address”. You may need to scroll down to make “Delete registered address” visible. c. Press each email address/phone number you want to delete. A check mark appears to its right. 126 • Appendix A: RK Link Phone App GX-3R Pro Operator’s Manual...
  • Page 127 Recipient must add 510.800.5926 to their contacts. b. For Android phones, turn the link preview feature on in the message settings window. No link preview Link preview GX-3R Pro Operator’s Manual Appendix A: RK Link Phone App • 127...

  • Page 128: Changing Gx-3R Pro Parameters

    Changing GX-3R Pro Parameters GX-3R Pro parameters can only be viewed or changed when a GX-3R Pro is paired with the app. Entering the Gas Detector Setting Menu From the home screen, press the button in the upper right corner of the app.

  • Page 129: Alarm Settings

    Alarm Settings Access the Gas Detector Setting Menu as described on pg.128. Press “Alarm Setting”. GX-3R Pro Operator’s Manual Appendix A: RK Link Phone App • 129...
  • Page 130 Turn the alarms on or off with the toggle button next to each alarm type. Adjust the alarm setpoints by pressing the current setpoint and scrolling to the desired value. 130 • Appendix A: RK Link Phone App GX-3R Pro Operator’s Manual...

  • Page 131: Calibration And Bump Settings

    Access the Gas Detector Setting Menu as described on pg.128. Press “Calibration/BUMP Setting”. Turn the calibration and bump test reminder screens on or off with the toggle buttons. Set the calibration and bump test intervals. GX-3R Pro Operator’s Manual Appendix A: RK Link Phone App • 131...

  • Page 132: Backlight Setting

    Scroll down to view or change the auto calibration value for each channel. Backlight Setting Access the Gas Detector Setting Menu as described on pg.128. Press “Backlight setting”. 132 • Appendix A: RK Link Phone App GX-3R Pro Operator’s Manual...

  • Page 133: Logger Data Settings

    0-255 seconds. The factory setting is 30 seconds. Press your phone’s “Back” button. Logger Data Settings Access the Gas Detector Setting Menu as described on pg.128. Press “Logger Data Setting”. GX-3R Pro Operator’s Manual Appendix A: RK Link Phone App • 133...

  • Page 134: Viewing Serial Number, Ids, And Bump/Cal Information

    Set the interval trend time, Station ID, and User ID. The serial number is not editable. Press “Send”. There is no confirmation that the information sent. Viewing Serial Number, IDs, and Bump/Cal Information Serial number, ID, and bump/cal information can only be viewed when a GX-3R Pro is paired with the app. Press the button in the upper right corner of the app.
  • Page 135 Press “Detector information”. Detector information appears. To view information for the last successful calibration and bump test, press the “Calibration BUMP history” button. GX-3R Pro Operator’s Manual Appendix A: RK Link Phone App • 135...
  • Page 136 The instrument’s serial number, station ID, user ID, and part of the calibration information appear. Scroll down to view the complete calibration information and/or the bump test information. 136 • Appendix A: RK Link Phone App GX-3R Pro Operator’s Manual...

  • Page 137: Viewing App Version Info

    Viewing App Version Info App version information can be viewed with or without a GX-3R Pro paired with the app. Press the button in the upper right corner of the app. Press “Version information”. GX-3R Pro Operator’s Manual Appendix A: RK Link Phone App • 137...
  • Page 138 Instrument information and app information appear. To view the license information, press “License information”. 138 • Appendix A: RK Link Phone App GX-3R Pro Operator’s Manual...

  • Page 139: Appendix B: Maintenance Mode

    Appendix B: Maintenance Mode Overview This appendix describes the GX-3R Pro in Maintenance Mode. The GX-3R Pro is factory-set to suit most applications. Update settings in Maintenance Mode only if required for your specific application. Maintenance Mode items and their factory settings are listed in Table 16 below.
  • Page 140 OFF: You cannot manually perform a fresh air adjust in Measuring Mode by pressing AIR. AUTO ZERO ON: The GX-3R Pro asks if you want to perform a fresh air adjustment at the end of the (pg.147) startup sequence. OFF (factory setting): The GX-3R Pro does not ask if you want to perform a fresh air adjustment at the end of the startup sequence.

  • Page 141: Entering Maintenance Mode

    The GX-3R Pro is not in operation as a gas detector while in Maintenance Mode. Take the GX-3R Pro to a non-hazardous location and turn it off if it is on. Press and hold AIR, then press and hold POWER MODE. You will hear a beep after one second.

  • Page 142: Tips For Using Maintenance Mode

    A calibration cylinder. The concentrations should be above the alarm condition you want to check. Standard alarm points are listed on pg.8. • 0.25 LPM fixed flow regulator • Non-absorbent tubing • Calibration cup 142 • Appendix B: Maintenance Mode GX-3R Pro Operator’s Manual...
  • Page 143 Confirm that the regulator knob is turned all the way clockwise. Screw the 0.25 LPM fixed flow regulator onto the calibration cylinder. Install the calibration cup onto the GX-3R Pro. Use the label and imprinting to make sure that the calibration cup gets installed in the correct orientation relative to the GX-3R Pro.

  • Page 144: Sensor/Battery Replacement Date (Sensor Date)

    Remove the calibration cup from the GX-3R Pro. Store the calibration kit in a safe and convenient place. Press and release POWER MODE to return to Maintenance Mode. 10 . See “Exiting Maintenance Mode (START MEASURE)” on page 153 to return to Measuring Mode.

  • Page 145: Performing A Bump Test (Bump Test)

    See “Exiting Maintenance Mode (START MEASURE)” on page 153 to return to Measuring Mode. Performing a Bump Test (BUMP TEST) See “Performing a Bump Test (BUMP TEST)” on page 54 for instructions. GX-3R Pro Operator’s Manual Appendix B: Maintenance Mode • 145...

  • Page 146: Setting Alarms To Latching Or Self-Resetting (Latching)

    Setting Alarms to Latching or Self-Resetting (LATCHING) ON (factory setting): The GX-3R Pro remains in alarm until the alarm condition passes and POWER MODE is pressed. OFF: The GX-3R Pro automatically resets an alarm when the alarm condition passes. While in Maintenance Mode, use AIR to place the cursor next to LATCHING.

  • Page 147: Turning Auto Zero On/Off (Auto Zero)

    Turning Auto Zero On/Off (AUTO ZERO) ON: The GX-3R Pro asks if you want to perform a fresh air adjustment at the end of the startup sequence. OFF (factory setting): The GX-3R Pro does not ask if you want to perform a fresh air adjustment at the end of the startup sequence.

  • Page 148: Turning Zero Suppression On/Off (Zero Suppress)

    Maintenance Mode. It is not normally necessary to have the zero suppression menu item appear in User Mode. Contact RKI Instruments before turning this setting on. User Mode Zero Follower (DISP ZERO FLWR) ON: Zero follower menu item appears in User Mode.

  • Page 149: Setting The Date/Time (Date)

    Use AIR to display the desired setting. Press and release POWER MODE to save the setting and return to Maintenance Mode. See “Exiting Maintenance Mode (START MEASURE)” on page 153 to return to Measuring Mode. GX-3R Pro Operator’s Manual Appendix B: Maintenance Mode • 149...

  • Page 150: Setting The Instrument Language (Language)

    Measuring Mode. Turning the Password On/Off (MAINT PASSWORD) ON (factory setting): The GX-3R Pro prompts you for a password when you enter Maintenance Mode. The factory-set password is 8102 but can be changed as desired. OFF: No password is required to enter Maintenance Mode.

  • Page 151: Viewing The Rom/Sum (Rom/Sum)

    BLUETOOTH Press and release POWER MODE to return to the ROM/SUM menu item in Maintenance Mode. See “Exiting Maintenance Mode (START MEASURE)” on page 153 to return to Measuring Mode. GX-3R Pro Operator’s Manual Appendix B: Maintenance Mode • 151...

  • Page 152: Adjusting The Lcd's Contrast (Lcd Contrast)

    The instrument asks if you are sure you want to restore the defaults. MAINTE 7:49 MAINTE 7:49 ARE YOU SURE ? ARE YOU SURE ? YES : MODE NO : AIR M .DEFAULT M .DEFAULT 152 • Appendix B: Maintenance Mode GX-3R Pro Operator’s Manual...

  • Page 153: Exiting Maintenance Mode (Start Measure)

    While in Maintenance Mode, use AIR to place the cursor next to START MEASURE. MAINTE 7:49 LCD CONTRAST M. DEFAULT START MEASURE MAINTENANCE Press and release POWER MODE. The instrument begins its start-up sequence. GX-3R Pro Operator’s Manual Appendix B: Maintenance Mode • 153...

  • Page 154: Appendix C: Gas Select Mode

    Appendix C: Gas Select Mode Overview This appendix describes the GX-3R Pro in Gas Select Mode. The GX-3R Pro is factory-set to suit most applications. Update settings in Gas Select Mode only if required for your specific application. A description of the Gas Select Mode items is shown in Table 17 below.

  • Page 155: Tips For Using Gas Select Mode

    Immediately press POWER MODE and then release both buttons. • To exit an entered menu item without saving a change, press and hold AIR and POWER MODE for a few seconds. GX-3R Pro Operator’s Manual Appendix C: Gas Select Mode • 155...

  • Page 156: Changing The Gas Combination (Gas Combo)

    7:49 GAS COMBO SAVE ALARM--P DISP MAX SPAN GAS SELECT MODE Press and release POWER MODE. The first channel appears. MAINTE 7:49 %LEL - - - - GAS COMBO 156 • Appendix C: Gas Select Mode GX-3R Pro Operator’s Manual...
  • Page 157 GAS COMBO MAINTE 7:49 MAINTE 7:49 - - - - GAS COMBO ESCAPE Press and release POWER MODE. The target gas for the channel appears. MAINTE 7:49 GAS COMBO GX-3R Pro Operator’s Manual Appendix C: Gas Select Mode • 157...
  • Page 158 10 . Press and release POWER MODE. The instrument returns to Gas Select Mode. 11 . See “Exiting Gas Select Mode (START MEASURE)” on page 162 to return to Measuring Mode. 158 • Appendix C: Gas Select Mode GX-3R Pro Operator’s Manual...

  • Page 159: Saving The Alarm Points (Save Alarm-P)

    The upper limit on the maximum adjustment indicated for the oxygen channel is 25.0% volume. OFF (factory setting): There is no maximum span indication at the end of a calibration. GX-3R Pro Operator’s Manual Appendix C: Gas Select Mode • 159...

  • Page 160: Stealth And Vibrator Settings (Stealth)

    Press and release POWER MODE to save the setting and return to Gas Select Mode. See “Exiting Gas Select Mode (START MEASURE)” on page 162 to return to Measuring Mode. 160 • Appendix C: Gas Select Mode GX-3R Pro Operator’s Manual...

  • Page 161: Lel Definition (Change Lel)

    20,000 20,000 20,000* Methyl ethyl ketone (MEK) 18,000 15,000 15,000 Methyl methacrylate (MMA) 17,000 17,000 17,000* Dimethyl ether (DME) 30,000 27,000 27,000 Methyl isobutyl ketone (MIBK) 12,000 12,000 12,000* GX-3R Pro Operator’s Manual Appendix C: Gas Select Mode • 161...

  • Page 162: Exiting Gas Select Mode (Start Measure)

    From the main menu, place the cursor in front of START MEASURE at the bottom of the menu. MAINTE 7:49 STEALTH CHANGE LEL START MEASURE GAS SELECT MODE Press and release POWER MODE. The unit begins its start-up sequence. 162 • Appendix C: Gas Select Mode GX-3R Pro Operator’s Manual...

  • Page 163: Appendix D: Interference Information

    Methane 1.26 vol% 0.09 ppm Methanol 1.38 vol% 2.32 ppm Methyl Ethyl Ketone 0.45 vol% 1.09 ppm Methyl Isobutyl Ketone 0.30 vol% 0.20 ppm Methyl Methacrylate 4250 ppm 0.13 ppm GX-3R Pro Operator’s Manual Appendix D: Interference Information • 163...
  • Page 164 Propylene 0.5 vol% 48.27 ppm Tetrahydrofuran 0.50 vol% 0.90 ppm Toluene 1.0 vol% 0.46 ppm Xylene 1.0 vol% 0.12 ppm The indicated value may fluctuate when exposed to this gas. 164 • Appendix D: Interference Information GX-3R Pro Operator’s Manual...

  • Page 165: Esr-A13I-H2S, H 2 S Detection

    Methyl Methacrylate C5H8O2 0.43 vol% 0.1 ppm n-Hexane n-C6H14 0.30 vol% 0.0 ppm Nitrogen Dioxide 5.0 ppm -0.4 ppm Nitrogen Monoxide 99.2 ppm 2.6 ppm Nonane n-C9H2O 0.18 vol% 0.0 ppm GX-3R Pro Operator’s Manual Appendix D: Interference Information • 165...

  • Page 166: Propane C3H8

    0.0 ppm Tetrahydrofuran C4H8O 0.50 vol% -0.4 ppm Toluene C7H8 1.0 vol% 0.0 ppm Xylene C8H10 0.25 vol% 0.0 pm The indicated value may fluctuate when exposed to this gas. 166 • Appendix D: Interference Information GX-3R Pro Operator’s Manual...

  • Page 167: Esr-A13P-Co, Co Detection

    Isopropyl Alcohol CHOH 0.5 vol% -1 ppm Methane 1.25 vol% 0 ppm Methanol 1000 ppm 3 ppm Methyl Ethyl Ketone 0.45 vol% -1 ppm Methyl Isobutyl Ketone 3000 ppm -1 ppm GX-3R Pro Operator’s Manual Appendix D: Interference Information • 167...
  • Page 168 Sulfur Dioxide 30 ppm 0 ppm Tetrahydrofuran 0.5 vol% 0 ppm Toluene 3000 ppm 0 ppm Xylene 2500 ppm 0 ppm The indicated value may fluctuate when exposed to this gas. 168 • Appendix D: Interference Information GX-3R Pro Operator’s Manual...

  • Page 169: Esr-A1Cp-Coh, H 2 -Compensated Co Detection

    Methanol 1.38 vol% 131 ppm Methyl Ethyl Ketone 0.45 vol% 0 ppm Methyl Isobutyl Ketone 0.30 vol% 0 ppm Methyl Methacrylate 0.43 vol% 1 ppm n-Hexane 0.30 vol% 1 ppm GX-3R Pro Operator’s Manual Appendix D: Interference Information • 169...
  • Page 170 Sulfur Dioxide 25.0 ppm 1 ppm Tetrahydrofuran 0.50 vol% 1 ppm Toluene 0.30 vol% 1 ppm Xylene 0.25 vol% 0 ppm The indicated value may fluctuate when exposed to this gas. 170 • Appendix D: Interference Information GX-3R Pro Operator’s Manual...

  • Page 171: Esr-A1Dp-Cohs, Co Detection

    Methane 1.25 vol% -1 ppm Methanol 1000 ppm 10 ppm Methyl Ethyl Ketone 0.45 vol% -1 ppm Methyl Isobutyl Ketone 0.3 vol% 0 ppm Methyl Methacrylate 0.425 vol% 2 ppm GX-3R Pro Operator’s Manual Appendix D: Interference Information • 171...
  • Page 172 Sulfur Dioxide 30 ppm 3 ppm Tetrahydrofuran 0.5 vol% 21 ppm Toluene 0.3 vol% 0 ppm Xylene 0.25 vol% 0 ppm The indicated value may fluctuate when exposed to this gas. 172 • Appendix D: Interference Information GX-3R Pro Operator’s Manual...

  • Page 173: Esr-A1Dp-Cohs, H 2 S Detection

    Isopropyl Alcohol C(OH)CH 0.5 vol% 0.0 ppm Methane 1.25 vol% -0.1 ppm Methanol 1.375 vol% 0.5 ppm Methyl Ethyl Ketone 0.45 vol% 0.3 ppm Methyl Isobutyl Ketone 0.3 vol% -0.1 ppm GX-3R Pro Operator’s Manual Appendix D: Interference Information • 173...
  • Page 174 0.5 vol% -0.1 ppm Silane 29.9 ppm 0.6 ppm Sulfur Dioxide 30 ppm -0.1 ppm Tetrahydrofuran 0.5 vol% 0.1 ppm Toluene 0.3 vol% -0.1 ppm Xylene 0.25 vol% -0.1 ppm 174 • Appendix D: Interference Information GX-3R Pro Operator’s Manual...
  • Page 175 Warranty RKI Instruments, Inc. warrants the GX-3R Pro sold by us to be free from defects in materials, workmanship, and performance for a period of three years from the date of shipment from RKI Instruments, Inc. This includes the instrument and the original sensors. Replacement parts are warranted for 1 year from the date of their shipment from RKI Instruments, Inc.

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