Riken Keiki SD-1OX Operating Manual
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Riken Keiki SD-1OX Operating Manual

Smart transmitter/gas detector head
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PT2E-1777
Smart Transmitter/Gas Detector Head
SD-1OX
Operating Manual
(PT2E-177)
(PT2-177)

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Summary of Contents for Riken Keiki SD-1OX

  • Page 1 PT2E-1777 Smart Transmitter/Gas Detector Head SD-1OX Operating Manual (PT2E-177) (PT2-177)
  • Page 2 Operating Precautions This detector is an oxygen deficiency detector that detects oxygen in the air and triggers an oxygen deficiency alarm. The oxygen deficiency detector is a safety unit, not an analyzer or densitometer which performs quantitative/qualitative analysis/measurement for oxygen. Please fully understand the following points before using it, so that it can be used properly.

  • Page 3: Table Of Contents

    <Contents> 1 Outline of the Product ......................2 1-1. Preface ..........................2 1-2. Purpose of use ........................2 1-3. Definition of DANGER, WARNING, CAUTION and NOTE ..........2 1-4. Method of confirmation for Standards and Explosion proof specification ......3 2 Important Notices on Safety ....................

  • Page 4: Outline Of The Product

    Outline of the Product 1-1. Preface Thank you for choosing our smart transmitter/gas detector head SD-1OX. Please check that the model number of the product you purchased is included in the specifications on this manual. This manual explains how to use the detector and its specifications. It contains information required for using the gas detector properly.

  • Page 5: Method Of Confirmation For Standards And Explosion Proof Specification

    1 Outline of the Product 1-4. Method of confirmation for Standards and Explosion proof specification 1-4. Method of confirmation for Standards and Explosion proof specification This instrument has some specification depends on standard and explosion proof certificate. Please confirm the detector specification before using. Please refer Declaration of Conformity that is at the end of this manual if you have CE marking type.

  • Page 6: Important Notices On Safety

    “10-1. List of specifications” for details.)  Do not replace parts at your sole discretion but contact RIKEN KEIKI if the transparent window has a crack or the explosion-proof joint surface is abnormal, or the clamping screw or bolt is changed, lost etc.

  • Page 7: Warning Cases

    2 Important Notices on Safety 2-2. Warning cases 2-2. Warning cases WARNING Power supply Before turning on the detector, always check that the voltage is properly applied. Do not use an unstable power supply because it may cause malfunctions. Need of grounding circuit Do not cut the grounding circuit or disconnect the wire from the grounding terminal.

  • Page 8: Precautions

    2 Important Notices on Safety 2-3. Precautions 2-3. Precautions CAUTION Do not use a transceiver near the detector. Radio wave from a transceiver or other radio wave transmitting device near the detector or its cables may disturb readings. If a transceiver or other radio wave transmitting device is used, it must be used in a place where it disturbs nothing.

  • Page 9: Safety Information

    Necessary information for explosion proof construction of Model SD-1OX. The Model SD-1OX is a fixed mount, continuous-monitoring detector head and provides a 4-20mA signal which indicates the target gas reading for use by a gas monitoring controller, recording device, or programmable controller.
  • Page 10 2 Important Notices on Safety 2-4. Safety Information <TIIS Specifications> Technical Data (Protection Method) Flameproof enclosure (Explosion-proof class) Ex d IIC T6 X (Ambient Temperature)* -20C to +53C (Electrical Data) Supply voltage: DC24V±10% 45mA Detecting element output signal: DC0.1V 0.2mA Analog signal output: DC24V 22mA Contact output (Contact capacity): AC250V 0.5A (Load resistance) DC30V 0.5A (Load resistance)

  • Page 11: Product Components

    3 Product Components 3-1. Main unit and standard accessories Product Components 3-1. Main unit and standard accessories <Main Unit> (including a cable gland or an adapter) 【ATEX/IECEx Specifications】 Display Adapter (NPT 1/2 ) 【TIIS Specifications】 Cable gland (G3/4) - 9 -...

  • Page 12: Names And Functions For Each Part

    3 Product Components 3-2. Names and functions for each part <Standard Accessories> Operating manual･･････････････････ one Dedicated handling lever (used for the wiring) ･･････････････････ one Dedicated control key････････ The supplied quantity depends on the number of units to be delivered. 1 to 10 units 11 to 20 units 21 to 50 units three...

  • Page 13: Block Diagram

    3 Product Components 3-3. Block diagram 3-3. Block diagram <Electric Diagram> Power supply part POWER INPUT (24 VDC) Display （POWER） （ALARM） （FAULT) Controller Seven-segment LED Alarm contact controller (CPU) (four-digit) 1. Gas alarm contact (ALARM) Magnetic operation part 2. Fault contact (FAULT) (MENU/ESC) (▲) (▼) (SET) 3.

  • Page 14: How To Use

    4 How to Use 4-1. Before using the gas detector How to Use 4-1. Before using the gas detector Not only the first-time users but also the users who have already used the detector must follow the operating precautions. Ignoring the precautions may damage the gas detector, resulting in inaccurate gas detection. 4-2.

  • Page 15: Precautions For System Designing

    4 How to Use 4-3. Precautions for system designing Do not install the detector in a place where maintenance of the detector cannot be performed or where handling the detector involves dangers. Regular maintenance of the detector must be performed. Do not install the detector in a place where the machinery must be stopped when maintenance is performed in its inside, where parts of the machinery must be removed to perform maintenance, or where the detector cannot be removed because tubes or racks prevent access to it.
  • Page 16 4 How to Use 4-3. Precautions for system designing Take appropriate measures in accordance with the importance of the facilities and the environment.  Provide protection by a lightning arrester (cable arrester). Protection against (Although inductive lightning surge can be transmitted through the cable, it is lightning prevented by installing a lightning arrester before the field devices and central processing equipment.

  • Page 17: How To Install

    4 How to Use 4-4. How to install SD-1OX Power Power supply supply Alarm contact External relay * SK1, SK2: Surge absorbing parts (low voltage relay) 4-4. How to install <Installation Dimensions and Maintenance Space> 150mm The following installation requirements must be met to install the detector.
  • Page 18 4 How to Use 4-4. How to install WARNING  Install the detector head in the specified direction. Installing it in a wrong direction may cause abnormal readings.  Install the detector while giving due consideration to the conditions for the detection area. Normally, when the detector is used to detect oxygen deficiency, the detector head should be installed at a face level.

  • Page 19: Installation Procedure

    Adapter A (NPT1/2) 【TIIS Specifications】 Cable gland, Rubber seal, Washer and Eccentric washer are mounted on SD-1OX main body as shown below. Attach the parts : Pass a Cable (e.g. CVVS) through the Cable gland, Eccentric washier, Washer, and Rubber seal, and drawn into detector inside.

  • Page 20: How To Wire

    4 How to Use 4-6. How to wire 4-6. How to wire CAUTION  Be careful not to damage the internal electronic circuit when wiring. In addition, be careful not to apply stresses on the detector when (overweight) cables are installed. ...
  • Page 21 4 How to Use 4-6. How to wire NOTE  The following table shows an example of overall outer diameters of cables. Use them for reference. The overall outer diameters must be checked because they somewhat vary between manufacturers. Number of core CVV 1.25 mm CVV 2 mm CVVS 1.25 mm...
  • Page 22 4 How to Use 4-6. How to wire CAUTION The specified bare wire length must be observed when the wire insulation is peeled off. Improper clamping of the wire due to a shorter bare wire length may cause defective electric conduction or heating.
  • Page 23 Use ring terminals to connect the grounding terminal with the ground and use the grounding wire with cross-sectional area of 4 mm or more for the external grounding terminal. <Wiring Example> Connecting to the indicator SD-1OX 2 3 4 5 RM-5003 etc. +24 V Connecting to the upper unit (DCS, PLC)

  • Page 24: How To Operate

    5 How to Operate 5-1. Preparation for start-up How to Operate 5-1. Preparation for start-up Before connecting a power supply, read and understand the following precautions. Ignoring these precautions may cause an electric shock or damage the detector.  Connect the detector to a grounding circuit. ...

  • Page 25: How To Start The Gas Detector

    5 How to Operate 5-3. How to start the gas detector WARNING When the detector enters other mode from the detection mode while an alarm is activated, the alarm is reset. 5-3. How to start the gas detector  Before supplying power (24 VDC) to the detector, check that the detector is installed properly. ...

  • Page 26: Modes

    5 How to Operate 5-4. Modes 5-4. Modes Details on each mode are provided as follows. CAUTION  Do not change the settings if not necessary. Changing the settings without understanding the specifications may cause malfunctions. Mode Item Details display Detection Mode concentr Normal state...

  • Page 27: Maintenance Mode(User)

    5 How to Operate 5-5. Maintenance Mode(User) 5-5. Maintenance Mode(User) WARNING After the adjustment is completed, never fail to press MENU/ESC key to return to the detection mode. (If the detector remains in the user mode, it automatically returns to the detection mode in ten hours.) Detection Mode Press the MENU/ESC key for...
  • Page 28 5 How to Operate 5-5. Maintenance Mode(User) <Span Adjustment (AIR adjustment)"1-1"> This is used to perform the zero adjustment (AIR adjustment). Press SET key. Air Introduction 21.2 Introduce an air, and then press the SET key when the reading is stabilized. Span Adjustment (AIR Adjustment) 20.9 After the reading will flash, adjust the display...

  • Page 29: How To Exit

    5 How to Operate 5-6. How to exit <Setting Display "1-2"> Display various setting values. 1-2. Press SET key. Alarm Setpoint Display Alarm Delay Time Display (seconds) Zero Suppression Value Display Alarm Contact Specification : The contact is activated due to the Display gas alarm.

  • Page 30: Operations And Functions

    6 Operations and Functions 6-1. Alarm activation Operations and Functions 6-1. Alarm activation Oxygen concentration alarm: Activated when the detected oxygen concentration reaches or exceeds the alarm setpoint value. <<Auto-Reset Operation>> NOTE The alarm setpoint is factory-set. Although the alarm delay time (standard: 2 seconds) works in the detector to prevent a false activation, it can be cancelled if not needed.

  • Page 31: Fault Alarm Activation

    After the detector is successfully returned from the fault, it restarts with the process normally performed right after it is turned on (initial clear). If the detector has problems and is repeatedly malfunctioning, contact RIKEN KEIKI immediately. <Display Operation> Fault Detail Display Display a message indicating the fault detail.

  • Page 32: External Output Operation

    6 Operations and Functions 6-3. External output operation 6-3. External output operation 0 - 25 vol% (Oxygen deficiency alarm specification) Signal Transmission System Electric current transmission (non-isolated) 4 – 20 mA Transmission Path CVVS equivalent Transmission Distance CVVS equivalent 1.25 mm : Maximum 1.25 km CVVS equivalent 2.0 mm : Maximum 2.0 km...

  • Page 33: Other Functions

    6 Operations and Functions 6-4. Other functions 6-4. Other functions <Suppression Function> The sensors used with the detector are influenced by environmental changes (temperature, humidity and other characteristics) in no small measure, which affects the reading. Therefore, the reading might be fluctuated even in a normal environment.

  • Page 34: Maintenance

    7 Maintenance 7-1. Maintenance intervals and items Maintenance The gas detector is an important instrument for the purpose of safety. To maintain the performance of the gas detector and improve the reliability of safety, perform a regular maintenance. 7-1. Maintenance intervals and items ...
  • Page 35 7 Maintenance 7-1. Maintenance intervals and items Main Services Power Supply Checks the power supply voltage. Check Verifies that the power lamp lights up. (Verifies that relevant points can be identified on the system.) (When a UPS (uninterruptible power system) is used, checks the operation with the UPS.) Concentration Verifies that the concentration display value is zero (or 20.9 vol% on the oxygen deficiency Display Check...

  • Page 36: Maintenance Mode(Regular Maintenance)

    7 Maintenance 7-2. Maintenance mode(Regular maintenance) 7-2. Maintenance mode(Regular maintenance) WARNING After the adjustment is completed, never fail to press MENU/ESC key to return to the detection mode. (If the detector remains in the regular maintenance mode, it automatically returns to the detection mode in ten hours.) Mode Item...
  • Page 37 7 Maintenance 7-2. Maintenance mode(Regular maintenance) 2-1. Zero Adjustment Zero Adjustment (N2 adjustment) (N2 adjustment) Perform the zero adjustment => P43 (N2 adjustment). Span Adjustment 2-2. Span Adjustment (AIR adjustment) (AIR adjustment) => P41 Perform the span adjustment (AIR adjustment). 2-3.
  • Page 38 7 Maintenance 7-2. Maintenance mode(Regular maintenance) <Test Mode "2-0"> Press SET key. Gas Test => P37 2-0.0 Gas Test Alarm Test => P37 2-0.1 Alarm Test Fault Test => P38 2-0.2 Fault Test LED Test => P38 2-0.3 LED Test Memory Test =>...
  • Page 39 7 Maintenance 7-2. Maintenance mode(Regular maintenance) <Gas Test "2-0.0"> 2-0.0 Press SET key. Introduce the test gas and perform the gas test. Stop introducing the test gas. When the reading increases, press the MENU/ESC key to cancel the test and to go back to the original state.
  • Page 40 7 Maintenance 7-2. Maintenance mode(Regular maintenance) <Fault Test "2-0.2"> 2-0.2 Press SET key. Fault Test ON/OFF Select either ON/OFF. Switch ON and press the SET key to trigger the fault alarm. Return to OFF and press the SET key to cancel the test.
  • Page 41 7 Maintenance 7-2. Maintenance mode(Regular maintenance) <Memory Test "2-0.4"> 2-0.4 Press SET key. When StA. is displayed, press the SET key again. When CAL. is displayed, the memory diagnosis is performed. When memory is correct as a result of the diagnosis, PASS is displayed.
  • Page 42 7 Maintenance 7-2. Maintenance mode(Regular maintenance) <Environmental Setting "2-4"> Set various operations and functions in the environmental setting. <<Environmental Setting 1>> 2-4. Environmental Setting Press SET key. 2-4.0 They are factory-set and not typically used by the user. 2-4.1 INHIBIT Setting Set Inhibit.

  • Page 43: Calibration Method

    7 Maintenance 7-3. Calibration method 7-3. Calibration method Perform a calibration in each mode (zero <SD-1OX> adjustment mode and span adjustment mode) using the calibration gas.  Zero adjustment gas (more than N2 99.9% collected in a gas sampling bag) ...
  • Page 44 If there are mistakes, perform the span adjustment (AIR adjustment) again. If the span adjustment (AIR adjustment) cannot be performed even when there is no mistake or after recalibration, the gas sensor life might have expired. After turning off the power supply, please contact RIKEN KEIKI. - 42 -...
  • Page 45 7 Maintenance 7-3. Calibration method <Zero Adjustment (N2 adjustment) "2-1"> This is used to perform the zero adjustment (N2 adjustment). When the detector is used to prevent oxygen deficiency, zero adjustment is not required. NOTE  Before starting the zero adjustment(N2 adjustment), provide the detector with the zero adjustment (more than N2 99.9vol%) gas and wait until the indicator is stabilized.

  • Page 46: Replacement Parts

    The operation must be checked after replacement by a qualified service engineer. For the stable operation of the unit and safety, ask a qualified service engineer to take care of replacement of the parts that operation must be checked. Request RIKEN KEIKI for operation check. NOTE ...

  • Page 47: Storage, Relocation And Disposal

     When using a relocated or stopped/stored detector again, never fail to perform a calibration. For information on readjustment including a calibration, please contact RIKEN KEIKI. 8-3. Disposal of products When the detector is disposed of, it must be treated properly as an industrial waste in accordance with the local regulations.

  • Page 48: Troubleshooting

    9 Troubleshooting Troubleshooting The Troubleshooting does not explain the causes of all the malfunctions which occur on the detector. This simply helps to find the causes of malfunctions which frequently occur. If the detector shows a symptom which is not explained in this manual, or still has malfunctions even though remedial actions are taken, please contact our overseas sales department or local representatives.
  • Page 49 9 Troubleshooting 8-3. Disposal of products <Abnormalities of Readings> Symptoms Causes Actions Drifting of sensor Perform the zero adjustment (or span adjustment). output A very small amount of the gas to be detected may be The reading rises (drops) leaking (slow leak). Because ignoring it may cause Slow leak and it remains so.

  • Page 50: Product Specifications

    10 Product Specifications 10-1. List of specifications Product Specifications 10-1. List of specifications <ATEX/IECEx/Oxygen Deficiency Alarm Specifications> Model SD-1OX Detection principle Galvanic cell method Detectable gas Gas concentration display LED(4digits・7segments) Measuring range 0 - 25vol% Detection method Diffusion method Alarm preset point 18vol%(L)【Standard】...
  • Page 51 10 Product Specifications 10-1. List of specifications <ATEX/IECEx/Leak Alarm Specifications> Model SD-1OX Detection principle Galvanic cell method Detectable gas Gas concentration display LED(4digits・7segments) Measuring range 0 - 50vol% Detection method Diffusion method Alarm preset point 25vol%(H)【Standard】 Power indication POWER lamp lighting(green)
  • Page 52 10 Product Specifications 10-1. List of specifications <ATEX/IECEx/Gas Monitoring Specifications> Model SD-1OX Detection principle Galvanic cell method Detectable gas Gas concentration display LED(4digits・7segments) Measuring range 0 - 5vol%/0 - 10vol%/0 - 25vol%/0 - 50vol%/0 - 100vol% Detection method Diffusion method...
  • Page 53 10 Product Specifications 10-1. List of specifications Outline Drawings 【Adapter A<NPT1/2>】 Cable gland (G3/4) - 51 -...
  • Page 54 10 Product Specifications 10-1. List of specifications <TIIS/Oxygen Deficiency Alarm Specifications> Model SD-1OX Detection principle Galvanic cell method Detectable gas Gas concentration display LED(4digits・7segments) Measuring range 0 - 25vol% Detection method Diffusion method Alarm preset point 18vol%(L)【Standard】 Power indication POWER lamp lighting(green)
  • Page 55 10 Product Specifications 10-1. List of specifications <TIIS/Leak Alarm Specifications> Model SD-1OX Detection principle Galvanic cell method Detectable gas Gas concentration display LED(4digits・7segments) Measuring range 0 - 50vol% Detection method Diffusion method Alarm preset point 25vol%(H)【Standard】 Power indication POWER lamp lighting(green)
  • Page 56 10 Product Specifications 10-1. List of specifications <TIIS/Gas Monitoring Specifications> Model SD-1OX Detection principle Galvanic cell method Detectable gas Gas concentration display LED(4digits・7segments) Measuring range 0 - 5vol%/0 - 10vol%/0 - 25vol%/0 - 50vol%/0 - 100vol% Detection method Diffusion method...
  • Page 57 10 Product Specifications 10-1. List of specifications Outline Drawings 【Cable gland<G3/4>】 Adapter A (NPT1/2) - 55 -...

  • Page 58: Detection Principle

    10 Product Specifications 10-2. Detection principle 10-2. Detection principle [Detection principle] A negative electrode of noble metal and a positive electrode of lead are placed in a resin container filled with electrolyte. A part of the container is opened and covered with a barrier. The negative electrode is installed in contact with the barrier.

  • Page 59: Definition Of Terms

    11 Definition of Terms Definition of Terms This is a principle of the sensor installed in the detector head. Galvanic cell type See "10-2. Detection principle" for details. Output from the detector head fluctuates for a while after turning on the power. Initial clear This is a function to prevent triggering alarm during that time.

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