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Summary of Contents for Riken Keiki GD-D58-AC-GH
- Page 1 PT2E-20010 Combustible・Toxic Gas Detector Head GD-D58・AC・GH GD-D58・DC・GH Operating Manual...
- Page 2 Operating Precautions This detector is a gas detector that detects combustible/toxic gases in the air and triggers a gas alarm. The gas detector is a safety unit, not an analyzer or densitometer which performs quantitative/qualitative analysis/measurement for gases. Please fully understand the following points before using it, so that it can be used properly. This detector may be interfered by gases and vapors other than the gas to be detected.
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Page 3: Table Of Contents
<Contents> Outline of the Product ....................1 1-1. Preface ........................1 1-2. Purpose of use ......................1 1-3. Definition of DANGER, WARNING, CAUTION, and NOTE ........2 1-4. Method of confirmation for Standards and Explosion proof specification ....2 Important Notices on Safety ..................3 2-1. -
Page 4: Outline Of The Product
1 Outline of the Product 1-1. Preface Outline of the Product 1-1. Preface Thank you for choosing our fixed-type combustible/toxic gas detector head GD-D58 series. 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 head and its specifications. -
Page 9: Important Notices On Safety
2 Important Notices on Safety 2-4. Safety Information 2-4. Safety Information Necessary information for explosion proof construction of Model GD-D58・AC・GH／ＧD-D58・DC・ This product is a diffusion type gas detector which is basically installing fixed place. <ATEX/UKEX Specifications> Technical Data (Protection Method) Flameproof enclosure “d”... - Page 10 2 Important Notices on Safety 2-4. Safety Information Installation 【GD-D58･DC･GH】 GD-D58 Series - 7 -...
- Page 11 2 Important Notices on Safety 2-4. Safety Information <Taiwan Ex(TS) Specifications> Technical Data (Protection Method) Flameproof enclosure (Explosion-proof class) Ex dⅡB+H2 T4 Gb (Ambient Temperature) Type AC: -20C to 50C Type DC: -20C to 53C (Electrical Data) Supply voltage : Type AC: AC100～110V 50/60Hz 120mA Type DC: DC24V 360mA Electrical rating :...
- Page 12 2 Important Notices on Safety 2-4. Safety Information <Japan Ex Specifications> Technical Data (Protection Method) Flameproof enclosure (Explosion-proof class) Ex dⅡB+H2 T4 (Ambient Temperature) Type AC: -20C to 50C Type DC: -20C to 53C (Electrical Data) Supply voltage : Type AC: AC100～110V 50/60Hz 120mA Type DC: DC24V 360mA Electrical rating : DC6.5V 205mA or DC3.5V 350mA...
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Page 22: How To Use
4 How to Use 4-3. Precautions for system designing Introducing protective measures against lightning If cables are installed outside the factory/plant, or if internal cables are installed in the same duct as the cables coming from outside the factory/plant, "lightning" will cause problems. Because lightning acts as a large emission source while cables act as a receiving antenna, devices connected to the cables may be damaged. -
Page 33: How To Operate
5 How to Operate 5-1. Preparation for start-up How to Operate 5-1. Preparation for start-up Before supplying power, read and understand the following precautions. Ignoring these precautions may cause an electric shock or damage the detector head. Check that the detector head is installed properly. ... -
Page 36: Alarm Activation
After the detector head is successfully returned from the fault, it restarts with the process normally performed right after it is turned on (initial clear). If the detector head has problems and is repeatedly malfunctioning, contact RIKEN KEIKI immediately. <Low Flow Rate Abnormal Operations>... -
Page 37: Maintenance
7 Maintenance 7-1. Maintenance intervals and items Maintenance The detector head is an important instrument for the purpose of safety. To maintain the performance of the detector head and improve the reliability of safety, perform a regular maintenance. Continuing to use the detector head without performing a maintenance will compromise the sensitivity of the gas sensor, thus resulting in inaccurate detection. - Page 38 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 head, please use our maintenance service. The followings are typical maintenance services. For more information, please contact RIKEN KEIKI. Main services Power supply Checks the power supply voltage.
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Page 39: Parts Replacement
7-2. Parts replacement <Gas Sensor, Flow Sensor, and Pump Replacement> Our service engineers need to replace and calibrate these parts. Please contact RIKEN KEIKI. NOTE ・It is a life of sensor when it cannot unite with a standard reference gas concentration value, even if it makes sensitivity into the maximum as a result of adjustment. -
Page 41: Troubleshooting
This simply helps to find the causes of malfunctions which frequently occur. If the detector head 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 42 Disturbances by interference gases, such as solvents, cannot Presence of be eliminated completely. For information on actions such as interference gas removal of filter, please contact RIKEN KEIKI. Turn off and restart the detector head. A gas alarm is triggered Disturbance by noise...
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Page 43: Product Specifications
10 Product Specifications 10-1. List of specifications Product Specifications 10-1. List of specifications [GD-D58•DC•GH] ＜ATEX/UKEX Specifications＞ Model GD-D58･DC･GH Detection principle Semiconductor type Detection gas Combustible gas / Toxic gas Display Seven-segment LED (four-digit) Detection method Sample-drawing Flow rate 1.0 L/min or more (at maximum suction pressure of 5.0 kPa <gauge pressure>) Power display POWER lamp on (green) Fault alarm/self... - Page 44 10 Product Specifications 10-1. List of specifications [GD-D58•AC•GH] ＜Taiwan Ex(TS) Specifications＞ Model GD-D58•AC•GH Detection principle Semiconductor type Detection gas Combustible gas / toxic gas Display Seven-segment LED (four-digit) Detection method Sample-drawing Flow rate 1.5 L/min or more (at maximum suction pressure of 5.3 kPa <gauge pressure>) Power display POWER lamp on (green) Fault alarm/self...
- Page 45 10 Product Specifications 10-1. List of specifications [GD-D58•DC•GH] ＜Taiwan Ex(TS) Specifications＞ Model GD-D58•DC•GH Detection principle Semiconductor type Detection gas Combustible gas / Toxic gas Display Seven-segment LED (four-digit) Detection method Sample-drawing Flow rate 1.0 L/min or more (at maximum suction pressure of 5.0 kPa <gauge pressure>) Power display POWER lamp on (green) Fault alarm/self...
- Page 46 10 Product Specifications 10-1. List of specifications [GD-D58•AC•GH] ＜Japan Ex Specifications＞ Model GD-D58･AC･GH Detection principle Semiconductor type Detection gas Combustible gas / toxic gas Display Seven-segment LED (four-digit) Detection method Sample-drawing Flow rate 1.5 L/min or more (at maximum suction pressure of 5.3 kPa <gauge pressure>) Power display POWER lamp on (green) Fault alarm/self...
- Page 47 10 Product Specifications 10-1. List of specifications [GD-D58•DC•GH] ＜Japan Ex Specifications＞ Model GD-D58･DC･GH Detection principle Semiconductor type Detection gas Combustible gas / Toxic gas Display Seven-segment LED (four-digit) Detection method Sample-drawing Flow rate 1.0 L/min or more (at maximum suction pressure of 5.0 kPa <gauge pressure>) Power display POWER lamp on (green) Fault alarm/self...
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Page 49: Definition Of Terms
11 Definition of Terms Definition of Terms This is a principle of the sensor installed in the detector. Semiconductor 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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