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Related Manuals for Riken Keiki GD-F3A-SC-A
Summary of Contents for Riken Keiki GD-F3A-SC-A
- Page 1 PT2E-2490 Oxygen Gas Detector Head GD-F3A-SC-A Operating Manual (PT2-150)
- Page 2 [CAUTIONS ON OPERATION] This is a fixed type gas detector (head) and alarm instrument to detect oxygen gas in air. The gas alarm instrument is a safety instrument, not an analyzer nor measuring instrument to make quantitative and qualitative analysis or measurement. Please understand following points and use this detector head correctly.
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Page 3: Table Of Contents
TABLE OF CONTENTS １．PRODUCT OUTLINE １－１． Preface ……………………………………………………………………… １－２． Application for use ………………………………………………………… １－３． Identification of each signal word ………………………………………… ２．IMPORTANT INSTRUCTIONS FOR THE SAFETY ２－１． Danger items………………………………………………………………… ２－２． Warning items………………………………………………………………… ２－３． Caution items………………………………………………………………… ２－４． Cautions for the explosion proof (In case of intrinsically safe system)…… ３．PRODUCT FUNCTION ３－１．... - Page 4 ８．MEASURES AT ABNORMAL CASE ８－１． Responding to trouble alarm ……………………………………………… ８－２． Before it is thought to be a trouble………………………………………… ９．PRODUCT SPECIFICATIONS … ９－１． Standard specifications ……………………………………………… ９－２． Standard accessories …………………………………………………… ９－３． Optional accessories …………………………………………………… ９－４． Detection principle ……………………………………………………… １０．DEFINITION OF TERMS…………………………………………………...
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Page 5: １．Product Outline
First of all, verify that the model number of this product is identical with specifications described in this manual. This manual is a guide to operation of the GD-F3A-SC-A. All persons who use unit for the first time and who has ever used this unit are requested to read through the manual to understand the content before use. -
Page 6: ２．Important Instructions For The Safety
２. IMPORTANT INSTRUCTIONS FOR THE SAFETY ２－１．Danger items DANGER In case of non-explosion poof system, do not use this unit at the place where combustible gas may exist. ２－２．Warning items WARNING ・Do not cut the wire for protective ground both inside and outside of instrument. Or, do not disconnect the connection of the ground terminals. -
Page 8: ３－２．Name Of Each Part And Functions
３－２．Name of each part and functions ④ ⑧ ⑨ ⑩ ⑬ ⑥ ⑦ ① ⑭ ② ③ ⑪ ⑫ ⑮ ⑤ ① Oxygen sensor : Galvanic type sensor to detect oxygen content. ② Sensor holder : This is a retainer to hold the oxygen sensor (equipped filter inside). -
Page 9: ３－３．System Composition
３－３．System composition (1) Intrinsically safe system Hazardous area Non-hazardous area 4-20mA Indicator Detector /alarm head unit In-between head and zener barrier: CVVS 1.25mm 2-core or equivalent(max 250m) However, that of head and indicator/alarm unit: CVVS 1.25mm 2-core or equivalent(max 2km) ！... - Page 13 Max. 2 km CVVS 1.25mm equivalent(max 250m) Connection Connection cable cable GD-F3A-SC-A Hazardous area Non-hazardous area Example of intrinsically safe system WARNING ・ Ground the zener barrier separately corresponding to the A-class grounding with ground resistance of 10Ω or less.
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Page 14: ５．Operation Method
５．OPERATION METHOD ５－１．Preparation before start up Before making power on, take care of the following. If do not keep this, there is the danger of electrical shock and damage of instrument. WARNING ・Make protective grounding. ・Check that the wiring with outer unit is made correctly. ・Check that the supply voltage is within the rating. -
Page 15: ６．Maintenance And Inspection
To maintain the safety operation of the gas detection instrument, it is recommended to keep the maintenance contract with our authorized distributor for regular maintenance, adjustment and overhaul etc including the gas sensitivity adjustment (gas calibration). For the detail of maintenance contract, contact our nearest agent or RIKEN KEIKI. ！ WARNING ・This is a safety instrument and the inspection every 6 months or more is... -
Page 16: ６－２．Calibration
６－２．Calibration Perform gas calibration at new installation, 6 months inspection and sensor replacement. ６－２－１．Required kit and tools for calibration Prepare following jigs and tools to perform zero and span adjustments. Calibration adapter Calibration gas (standard gas for zero and span) ... -
Page 18: ６－４．Storage Or Treatment When Not In Use For A Long Period
６－４．Storage or treatment when not in use for a long period Oxygen sensor is a kind of cell and will continue to consume its life even though it is not used. When detector head is not used for a long period, take out the sensor from detector head and store it at following environment to lower the consumption of sensor. -
Page 19: ７．Storage,Relocation And Disposal
７．STORAGE,RELOCATION AND DISPOSAL ７－１．Procedures to store the detector head or leave it for a long time The detector head must be stored under the following environmental conditions. In a dark place under the normal temperature and humidity away from direct sunlight ... -
Page 20: ８．Measures At Abnormal Case
８．MEASURES AT ABNORMAL CASE ８－１．Responding to trouble alarm If this detector founds defective, contact our authorized agent or RIKEN KEIKI. ８－２．Before it is thought to be a trouble It may be caused by cable disconnection, short circuit, etc. ・Check the wirings around the related instruments as well as this detector head. -
Page 21: ９．Product Specifications
９．PRODUCT SPECIFICATIONS ９－１．Standard specifications Model GD-F3A-SC-A Detection principle Galvanic cell method Detectable gas Detection method Diffusion method Transmission method Analog transmission Transmission specification 4-20mADC Transmission cable CVVS 1.25mm ・2-core or equivalent Transmission distance Up to 2km with CVVS 1.25mm (up to 250m between the detector head and Zener barrier) -
Page 23: １０．Definition Of Terms
10．DEFINITION OF TERMS Galvanic cell Galvanic cell type oxygen sensor that produces a current proportional to the oxygen content permeated through the membrane. Refer to “9-4. DETECTION PRINCIPLE” for details. Zener barrier Safety retainer for explosion protection by limiting the energy of electric current within a non-ignition level. - Page 24 Manual Log Rev. Amendment Issue data First issue 2018/1/9...
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