Related Manuals for Riken Keiki SD-1DGH-AS
Summary of Contents for Riken Keiki SD-1DGH-AS
- Page 1 PT2E-2525 Smart Transmitter/Gas Detector Head SD-1DGH-AS Operating Manual (PT2E-170) (PT2-170)
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Page 2: Table Of Contents
<Contents> 1. Outline of the Product ......................3 1-1. Preface ..........................3 1-2. Purpose of use ........................ 3 1-3. Definition of DANGER, WARNING, CAUTION, and NOTE ..........4 1-4. Method of confirmation for Standards and Explosion proof specification ......4 2. -
Page 3: Outline Of The Product
Outline of the Product 1-1. Preface Thank you for choosing our smart transmitter/gas detector head SD-1DGH-AS. 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
The explosion protection conditions for the detector is "low (2J)" possibility of mechanical damage. 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 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-AS - 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 11: Product Components
NOTE This product is designed to have a gas detector head "SD-1DGH" incorporated in the sampling device. The internal tubing required for "SD-1DGH" has been arranged prior to shipment. SD-1DGH-AS - 11 -... -
Page 13: Names And Functions For Each Part
Alarm lamp. It lights up in red when the alarm setpoint value is Alarm lamp reached. Fault lamp. It lights up in yellow when an abnormality is detected Fault lamp in the detector. Concentration value display Displays the gas concentration and so on. SD-1DGH-AS - 13 -... -
Page 14: Block Diagram
(MENU/ESC) (▲) (▼) (SET) 3. Select either gas alarm or contact (ALARM/FAULT) Contact activation • De-energized (De-energized at a normal state) • ON-ALARM Sensor (Closed contact at an alarm state) Transmitter • 4 – 20 mA transmission SD-1DGH-AS - 14 -... -
Page 16: How To Use
Do not install the detector in a place where the range of operating temperatures is exceeded. The detector must be installed in a stable place where the operating temperature is maintained and do not change suddenly. <ATEX/IECEx Specifications> -20 to +60ºC <TIIS Specifications> -20 to +53ºC SD-1DGH-AS - 16 -... -
Page 17: 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-AS - 17 -... - Page 18 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-AS - 18 -...
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Page 21: How To Wire
From Φ9.6 to less than Φ10.5 Φ11 Φ12 Φ10.8 From Φ10.5 to less than Φ11.5 Φ12 Φ12 Φ11.8 From Φ11.5 to less than Φ12.5 Φ13 Φ14 Φ12.8 From Φ12.5 to less than Φ13.0 Φ13.5 Φ14 Φ13.8 φ 23 SD-1DGH-AS - 21 -... - Page 25 1 2 3 4 5 RM-5003, etc. +24 V Connecting to the upper unit (DCS, PLC) SD-1DGH 1 2 3 4 5 Relay terminal Power supply plate (24 VDC) ＋ － Upper unit (DCS, PLC) － ＋ SD-1DGH-AS - 25 -...
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Page 26: 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 27: How To Operate
Check that there is no clogging or leak in the connected tube. (If the connected tube is clogged, pressure is applied to the sensor, causing errors and malfunctions.) Check that the filter is attached properly. (The filter is specified based on the gas to be detected.) SD-1DGH-AS - 27 -... -
Page 30: How To Start The Detector
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-AS - 30 -... -
Page 31: 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-AS - 31 -... -
Page 36: 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-AS - 36 -... -
Page 37: 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 39: 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-AS - 39 -... -
Page 40: 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-AS - 40 -... - Page 41 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.
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Page 42: 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-AS - 42 -... - Page 44 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-AS - 44 -...
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Page 54: Replacement Parts
* The operation must be checked after replacement by a qualified service engineer. For the stable operation of the detector and safety, ask a qualified service engineer to take care of replacement of the parts. Request RIKEN KEIKI for operation check. NOTE ... -
Page 55: 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-AS - 55 -... -
Page 56: 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 57 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...
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Page 58: Product Specifications
10 Product Specifications 10-1. List of specifications Product Specifications 10-1. List of specifications [SD-1DGH-AS] <ATEX/IECEx Specifications> Detection principle Semiconductor Gas to be detected Combustible/toxic gas Applicable gas detector head SD-1DGH Concentration display Seven-segment LED (four-digit) Detection range Depends on the gas to be detected... - Page 59 Approx. 400 (W) x265 (H) x102 (D) mm Weight Approx. 5.6 kg Outer color Munsell 7.5BG5/2 * When a half-union for gas IN side is changed, check also the external filter (IN/OUT diameter) carefully. Outline Drawings 【Cable gland<G3/4>】 SD-1DGH-AS - 59 -...
- Page 60 10 Product Specifications 10-1. List of specifications 【Adapter A<NPT1/2>】 【Adapter B<NPT3/4>】 SD-1DGH-AS - 60 -...
- Page 61 10 Product Specifications 10-1. List of specifications [SD-1DGH-AS] <TIIS Specifications> Detection principle Semiconductor Gas to be detected Combustible/toxic gas Applicable gas detector head SD-1DGH Concentration display Seven-segment LED (four-digit) Detection range Depends on the gas to be detected Display resolution...
- Page 62 10 Product Specifications 10-1. List of specifications Outline Drawings SD-1DGH-AS - 62 -...
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Page 63: 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-AS - 63 -... -
Page 64: 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-AS - 64 -...
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