Riken Keiki SD-1DGH Operating Manual
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Riken Keiki SD-1DGH Operating Manual

Riken Keiki SD-1DGH Operating Manual

Smart transmitter/gas detector head
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Smart Transmitter/Gas Detector Head
Request for the Customers
•
Read and understand this operating manual before using the detector.
•
Use the detector in accordance with the operating manual.
•
Regardless of warranty period, we shall not make any indemnification for accidents and
damage caused by using this product.
The compensation shall be made only under the warranty policy of products or parts
replacement.
•
Because this is a safety unit, a regular maintenance for every six months and daily
maintenance must be performed.
•
If any abnormality is found in the detector, notify it to RIKEN KEIKI immediately.
SD-1DGH
Operating Manual
(PT2-170)
PT2E-1700

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Summary of Contents for Riken Keiki SD-1DGH

  • Page 1 The compensation shall be made only under the warranty policy of products or parts replacement. • Because this is a safety unit, a regular maintenance for every six months and daily maintenance must be performed. • If any abnormality is found in the detector, notify it to RIKEN KEIKI immediately.
  • Page 2 Necessary information for explosion proof construction of Model SD-1 About Model SD-1 The Model SD-1 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 3: Table Of Contents

    Procedures to relocate the detector or use it again ..........48 8-3. Disposal of products ....................48 Troubleshooting....................... 49 Product Specifications ..................... 51 10-1. List of specifications ....................51 10-2. List of accessories ....................52 10-3. Detection principle ....................53 Definition of Terms....................54 SD-1DGH - 3 -...

  • Page 4: Outline Of The Product

    Outline of the Product 1-1. Preface Thank you for choosing our smart transmitter/gas detector head SD-1DGH. 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 detector properly.

  • Page 5: Important Notices On Safety

    • Do not open the lid when applying current. • Do not attempt to repair the detector. • For the lid, use hexagon socket head bolts specified by RIKEN KEIKI. • Do not apply a strong force or shock to the window plate. The explosion-proof performances may be deteriorated due to damages.

  • Page 6: Warning Cases

    If other gases exist, the adjustment cannot be performed properly, thus leading to dangers when the gas leaks. Response to gas alarm Issuance of a gas alarm indicates that there are extreme dangers. Take proper actions based on your judgment. SD-1DGH - 6 -...

  • Page 7: Precautions

    A dust filter to be used varies depending on the gas to be detected. For more information on dust filters, please contact RIKEN KEIKI. Observe the operating restrictions to prevent condensation inside the tube. Condensation formed inside the tube causes clogging or gas adsorption, which may disturb accurate gas detection.

  • Page 8: Safety Information

    EN 60079-0:2009, EN 60079-1:2007 System configuration Installation diagram ← → Hazardous location Non-hazardous location (Zone1) Display Gas detector head (SD-1DGH) CVVS Cable Signal Signal Manufacturer RIKEN KEIKI CO., LTD. 2-7-6 Azusawa, Itabashi-ku, Tokyo, 174-8744 Japan Web site: http://www.rikenkeiki.co.jp/english SD-1DGH - 8 -...

  • Page 9: Product Components

    • Dedicated handling lever (used for the wiring) • Dedicated control key CAUTION Use the supplied dedicated control key to operate the detector. If products other than these accessories are used, key operations cannot be accepted properly. SD-1DGH - 9 -...

  • Page 10: Names And Functions For Each Part

    Notices on Safety." • The detector manufactured in accordance with the overseas specifications has a nameplate on the front side that shows also the serial number, date of manufacture, etc. INST.No.: Serial number DATE: Date of manufacture SD-1DGH - 10 -...

  • Page 11: Block Diagram

    Gas alarm contact (ALARM) Magnetic operation part Contact activation (MENU/ESC) (▲) (▼) (SET) • De-energized (De-energized at a normal environment) • ON-ALARM (Closed contact at an alarm time) Sensor Transmitter • 4 – 20 mA transmission SD-1DGH - 11 -...

  • Page 12: How To Use

    Condensation may be formed inside the detector, or the detector cannot adjust to sudden changes in the temperature. Keep the detector (and its cables) away from noise source devices. When selecting installation points, avoid a place where high-frequency/high-voltage devices exist. SD-1DGH - 12 -...

  • Page 13: Precautions For System Designing

    UPS outside the restart the detector.) detector. Example of actions Do not use it with a power supply of Others large power load or high-frequency Use a line filter to avoid the noise source noise. if necessary. SD-1DGH - 13 -...
  • Page 14 • It may be recommended that the surge absorbing part should be attached to the contact for certain load conditions. It must be attached to an appropriate position by checking how the load is activated. SD-1DGH - 14 -...

  • Page 15: How To Install

    4 How to Use 4-4. How to install SD-1DGH Coil Load Power Power supply supply Alarm contact External relay (low voltage relay) *SK1, SK2: Surge absorbing parts 4-4. How to install <Installation Dimensions and Maintenance Space> The following installation requirements must be met to install the detector.

  • Page 16: How To Wire

    The overall outer diameters must be checked because they somewhat vary between manufacturers. Number of core CVV 1.25sq CVV 2sq CVVS 1.25sq CVVS 2sq Φ9.5 Φ10.5 Φ10.0 Φ11.0 Φ10.0 Φ11.0 Φ10.5 Φ11.5 Φ10.5 Φ11.5 Φ11.0 Φ12.0 Φ11.5 Φ12.5 Φ12.0 Φ13.0 Φ12.5 Φ13.5 Φ13.0 Φ14.0 SD-1DGH - 16 -...
  • Page 17 Exposing the wire due to a longer bare wire length may cause defective insulation or a short circuit. Be careful not to break up the wire.If the wire is broken up when inserted to the terminal, this may cause defective insulation or heating. 8 - 9 mm SD-1DGH - 17 -...
  • Page 18 Once the lever is released, the wire is secured. To check whether the wire is connected securely, pull the wire gently. (Do not pull the wire strongly.) SD-1DGH - 18 -...
  • Page 19 • Tighten a cable gland with a tool until a clearance between the cable gland and a main unit case is below 1.5 mm. • If it is difficult to tighten the cable gland, grease its screw part and then tighten it with the tool. SD-1DGH - 19 -...
  • Page 20 • For the grounding wire, use cable lugs to safely connect it to a grounding terminal without looseness or twist. <Wiring Example> Connecting to the indicator SD-1DGH 1 2 3 4 5 RM-593, etc. +24 V Connecting to the upper unit (DCS, PLC)

  • Page 21: How To Tube

    • To remove dust, do not forget to attach a dust filter in the middle of the tube. • You need to decide the length and material of the tube. Please contact RIKEN KEIKI for more information.

  • Page 22: How To Operate

    Lamp on PW: POWER Lamp off <<Detection Mode>> A: ALM Lamp F: FAULT The detector is restarted blinking after recovering from fault. MENU/ESC (long pressing) <<User Mode>> <<Gas Alarm>> <<Fault Status>> <<Maintenance Mode>> SD-1DGH - 22 -...

  • Page 23: How To Start The Detector

    • After the warm-up is completed, perform a gas calibration. NOTE <<Start-up Operation Procedures>> (approximately 25 seconds for system check of the detector and alarm deactivation) Power on -> Initial clear (approximately 25 seconds) -> Detection mode Power On Initial Clear Detection Mode SD-1DGH - 23 -...
  • Page 24 24 hours or more 10 days or less 2 days or more Less than 1 month 7 days or more Less than 3 month 14 days or more 3 months or more 1 month or more SD-1DGH - 24 -...

  • Page 25: Modes

    2-4.F Sensor Fault Alarm Pattern Setting 2-4.H LOAD Voltage Adjustment Display various electrical settings. Display This is not typically used by the user. Switch to Factory Not used. Mode Switch to User Returns to the user mode. Mode SD-1DGH - 25 -...

  • Page 26: User Mode

    Zero Adjustment => P27 1-1. Zero Adjustment Perform the zero adjustment. Setting Display => P28 1-2. Various Setting Display Show various setting values. 1-3. Mode Switching See "Regular Switch to the maintenance maintenance mode". mode. To 1-0 SD-1DGH - 26 -...
  • Page 27 • If the zero calibration failed since the zero point was significantly fluctuated from around zero, it returns to 1-1 after FAIL rather than PASS is displayed. In this case, the zero adjustment has not been completed. SD-1DGH - 27 -...

  • Page 28: How To Exit

    Decide whether the power can be turned off by checking the operation of the devices connected to the external output or external contact output terminal of the detector. • If the alarm contact is energized (option), it is activated when the detector is turned "OFF". SD-1DGH - 28 -...

  • Page 29: Operations And Functions

    The contact activation is reset automatically when the gas concentration drops below the alarm setpoint value. Alarm setpoint Time Alarm lamp (ALM) Alarm contact (terminal plate 4, 5) Alarm delay time (2 seconds) SD-1DGH - 29 -...

  • Page 30: 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. NOTE For information on malfunctions (error messages), see "9. Troubleshooting".

  • Page 31: External Output Operation

    In particular, when the detector is started or the specification is changed, be careful about 4-20 mA output setting. Understand how the detector functions, and take actions, if necessary, so that the signal receiver side can prepare to avoid false alarms. SD-1DGH - 31 -...

  • Page 32: Other Functions

    A reading under zero is suppressed with the 10% FS suppression. A reading that is 10% FS or more under zero is displayed as "-0.0", which prevents an accurate gas detection and needs the zero adjustment and span adjustment. SD-1DGH - 32 -...

  • Page 33: Maintenance

    Inspect the alarm circuit by using the − alarm test function. Span Perform the span adjustment by using − − Adjustment the calibration gas. Gas Alarm Check the gas alarm by using the − − Check calibration gas. SD-1DGH - 33 -...
  • Page 34 Our qualified service engineers have expertise and knowledge on the dedicated tools used for services, along with other products. To maintain the safety operation of the detector, please use our maintenance service. • The followings are typical maintenance services. For more information, please contact RIKEN KEIKI. Main Services Power Supply Check Checks the power supply voltage.

  • Page 35: Regular Maintenance Mode

    2-4.F Sensor Fault Alarm Pattern Setting 2-4.H LOAD Voltage Adjustment Display various electrical settings. Display This is not typically used by the user. Switch to Factory Not used. Mode Switch to User Mode Returns to the user mode. SD-1DGH - 35 -...
  • Page 36 Initialize the zero/span adjustment after the sensor is replaced. Environmental 2-4. Environmental Setting Setting Set various operations and => P43 functions. 2-4.0 and 2-4.3 to 2-4.H are factory-set. They are not typically used by the user. SD-1DGH - 36 -...
  • Page 37 2-6. Enter the factory mode. This is not used by the user. rET. is displayed. 2-7. Press the SET key Return to the user mode. again to return to the user mode. To 2-0. Test Mode SD-1DGH - 37 -...
  • Page 38 • In the alarm test mode, the gas concentration equal to the reading is output even in the maintenance mode depending on the setting. Take actions, if necessary, so that the signal receiver side can prepare to avoid false alarms. SD-1DGH - 38 -...
  • Page 39 To 2-0.0 WARNING Because the contact and gas concentration output can be activated by a gas test even in the maintenance mode depending on setting, be careful to perform the test. SD-1DGH - 39 -...
  • Page 40 To 2-0.1 WARNING Because the contact and gas concentration output can be activated by an alarm test even in the maintenance mode depending on setting, be careful to perform the test. SD-1DGH - 40 -...
  • Page 41 FAULT) and to display the gas concentration of 8.8.8.8. Return to OFF and press the SET key to cancel the test. (Pressing the MENU/ESC key also enables to cancel the test and to go back to the original state.) SD-1DGH - 41 -...
  • Page 42 When abnormalities are found in memory as a result of the diagnosis, PASS is not displayed. F-RA is displayed for the RAM fault, and F-RO is displayed for the ROM fault. For both the RAM fault and ROM fault, F-RA and F-RO are displayed alternately. SD-1DGH - 42 -...
  • Page 43 Alarm Setpoint Setting Select the number by pressing the ▲ or ▼ key, and then press the SET key to confirm the value. (Press the Return to 2-4.2. MENU/ESC key to go back to the original state.) SD-1DGH - 43 -...

  • Page 44: Gas Calibration Method

    7 Maintenance 7-3. Gas calibration method 7-3. Gas calibration method <<SD-1DGH>> Perform a gas calibration in each mode (zero adjustment mode and span adjustment mode) using the calibration gas. • Zero adjustment gas • Span adjustment gas (collected in a gas sampling bag) •...
  • Page 45 • If the zero calibration failed since the zero point was significantly fluctuated from around zero, it returns to 2-1 after FAIL rather than PASS is displayed. In this case, the zero adjustment has not been completed. SD-1DGH - 45 -...
  • Page 46 If there are mistakes, perform the span adjustment again. If the span 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. SD-1DGH...

  • Page 47: Parts Replacement

    7-4. Parts replacement <Sensor Replacement> Our service engineers need to replace the sensor and perform the gas calibration. Please contact RIKEN KEIKI. NOTE The gas calibration using the standard gas is required after the sensor is replaced. Please request it to RIKEN KEIKI.

  • Page 48: Storage, Relocation And Disposal

    For information on readjustment including a gas 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. SD-1DGH - 48 -...

  • Page 49: Troubleshooting

    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 RIKEN KEIKI. <Abnormalities on Unit>...
  • Page 50 For information on actions, such as removal filter, The reading rises please contact RIKEN KEIKI. (drops) and it remains A very small amount of the gas to be detected may be leaking (slow leak). Because ignoring it may cause Slow leak dangers, take a remedial measure, i.e., taking actions...

  • Page 51: Product Specifications

    Flame-proof enclosures Explosion-proof class Exd II CT5 External dimensions Approx. 148 (W) x 177 (H) x 88 (D) mm (projection portions excluded) Weight Approx. 2.2 kg Outer color Munsell 7.5BG5/2 * Specifications subject to changes without notice. SD-1DGH - 51 -...

  • Page 52: List Of Accessories

    • Dedicated handling lever ....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 over 51 units four SD-1DGH - 52 -...

  • Page 53: Detection Principle

    <Semiconductor Type> Metal dioxide can measure gas concentration based on changes in the electric conductivity of semiconductor caused by gas adsorbed on its surface. RL: Load resistance, Vo: Output voltage VH: Heater voltage, Vs: Sensor voltage SD-1DGH - 53 -...

  • Page 54: Definition Of Terms

    A function which temporarily suspends activation to prevent a false alarm Alarm delay time caused by noise from its outside. The gas detection function is temporarily suspended during maintenance, etc. of the detector. INHIBIT This is also called "point skip", which has the same function. SD-1DGH - 54 -...
  • Page 55 Warranty Policy RIKEN KEIKI CO., LTD., warrants gas alarm equipment sold by us to be free from defects in materials, workmanship, and performance for a period of one year from date of shipment from RIKEN KEIKI CO., LTD., Inc. Any parts found defective within that period will be repaired or replaced, at our option, free of charge.

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