Riken Keiki GD-1DOX-AS, Operating Manual

Page 1: ...PT2E 2880 Fixed type Oxygen Detector Head GD 1DOX AS Operating Manual PT2 183...

Page 2: ...pressure other than atmospheric pressure a calibration is required under that pressure The maximum allowable pressure is 110 KPa The detector cannot be used under reduced pressure 3 The gas sensor use...

Page 3: ...to install 12 4 5 Installation procedure 13 4 6 How to wire 14 4 7 How to tube 17 5 How to Operate 18 5 1 Preparation for start up 18 5 2 Basic operating procedures 18 5 3 How to start the gas detecto...

Page 4: ...tor is a fixed type gas detector head that detects oxygen and performs the alarm activation when the gas concentration is over the setting value The detector is a safety unit not an analyzer or densit...

Page 5: ...performances may be deteriorated due to damages The explosion protection condition for the detector is low 2J possibility of mechanical damage Ambient temperature 20 to 53 C The ambient temperature on...

Page 6: ...austing outlet GAS OUT to which an exhaust tube is connected to a point regarded as a safe place Span adjustment AIR adjustment in atmosphere When the span adjustment AIR adjustment is performed in th...

Page 7: ...ion must be avoided In addition to the installation environment carefully monitor the temperature humidity of the sampling point to prevent condensation inside the tube In particular when detecting a...

Page 8: ...alarm unit 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 Detecting element output signa...

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Page 11: ...long and two short dashed line Polyurethane tube 6 8 X Polyurethane tube 4 6 Y Internal tubing has been arranged already Dashed line Polyurethane tube Polyurethane tube Alternate long and short dashe...

Page 12: ...s 10 to 40 C Do not install the detector in a place exposed to direct sunlight or sudden changes in the temperature When selecting installation points avoid a place where it is exposed to direct sunli...

Page 13: ...s installed in a metal conduit or under the ground cannot be completely protected from inductive lightning surge caused by lightning Although complete elimination of disasters caused by lightning is i...

Page 14: ...l does not cause corrosion at the surface 4 Silicon free 5 Validation of suitability depends on the specifications of grease manufacturer CAUTION Do not install the detector in a place where maintenan...

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Page 17: ...12 5 12 0 13 0 6 12 5 13 5 13 0 14 0 When the four hexagon socket head bolts of the gas detector head GD 1DOX are loosened and the lid is opened the following terminal plate appears There is one prote...

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Page 19: ...round it under the atmospheric pressure Be sure that excessive pressure is not applied to the sampling inlet and outlet GAS IN GAS OUT of the detector Detected gases must be exhausted from the detecte...

Page 20: ...that the preparations described in 5 1 Preparation for start up are completed The detector lacks a power switch Analog output from the oxygen sensor is sent directly to the indicator alarm unit via th...

Page 21: ...ensors are affected by sudden temperature changes If a rapid temperature change occurs in a short period of time the indicated value may change The sensor performs temperature compensation but the com...

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Page 23: ...egular mainte nance Power Supply Check Check that the power lamp lights up Status display Check Check that the fault lamp does not light up Flow rate check Check the flow rate to find abnormalities Co...

Page 24: ...r to find abnormalities Checks the flow rate by using an external flow meter to verify the correctness of the flow rate indicator on the gas detector If the flow rate is incorrect performs the flow ra...

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Page 26: ...ure is 1 atmosphere 1 000 hPa 50 hPa and that concentrations of impurities are negligibly low relative to the calibration gas concentration After the gas is introduced and the oxygen concentration rea...

Page 27: ...stment requires dedicated tools We recommend the adjustment be performed by RIKEN KEIKI Criteria Alarm delay time time to alarm at 18 alarm point within 5min Indicate accuracy 0 7vol of gas concentrat...

Page 28: ...rks 1 Guard assembly 6 months 3 8 years 1 2 Aspirator cap 6 months 3 8 years 1 The operation must be checked after replacement by a qualified service engineer For the stable operation of the unit and...

Page 29: ...Procedures to relocate the detector or use it again When the detector is relocated select a new place in accordance with 4 2 Precautions for installation sites and 4 4 How to install For information...

Page 30: ...s to indicator alarm unit as well See the operating manual of the indicator alarm unit for details Symptom Display FAULT Causes Actions Sensor error appears on the indicator side The wiring is not cor...

Page 31: ...G3 4 Compatible cables 9 6 13 0mm in outer diameter Piping port 2 Gas IN Rc1 4 O D 6 1t half union for PTFE tube PP supplied OUT O D 8 1t flare union for Cu tube Bs Compressed air IN O D 8 1t flare un...

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Page 33: ...used to express the percentage of a specific substance or gas in a volume of solution Atmosphere An atmosphere with a temperature within the range of 10 to 40 C and a humidity of 95 RH or less at one...

Page 34: ...Manual Log Rev Amendment Issue data 0 First issue PT2 2880 1 31 2022...