Riken Keiki GD-K71D Operating Manual
  1. Manuals
  2. Brands
  3. Riken Keiki Manuals
  4. Gas Detectors
  5. GD-K71D
  6. Operating manual

Riken Keiki GD-K71D Operating Manual

Hide thumbs
Table of Contents

Advertisement

Quick Links

Download this manual
PT2E-1057
OPERATING MANUAL
FOR
INTELLIGENT GAS DETECTOR
GD-K71D

Advertisement

Table of Contents
loading
Need help?

Need help?

Do you have a question about the GD-K71D and is the answer not in the manual?

Questions and answers

Related Manuals for Riken Keiki GD-K71D

Summary of Contents for Riken Keiki GD-K71D

  • Page 1 PT2E-1057 OPERATING MANUAL INTELLIGENT GAS DETECTOR GD-K71D...

  • Page 2: Table Of Contents

    INDEX １．PRODUCT OUTLINE １－１． Preface ……………………………………………………………………… 3 １－２． Application for use ………………………………………………………… １－３． Identification of each signal word ………………………………………… ２．IMPORTANT INSTRUCTION FOR THE SAFETY ２－１． Danｇer items………………………………………………………………… 4 ２－２． Warning items………………………………………………………………… 4 ２－３． Caution items………………………………………………………………… 5 ３．PRODUCT FUNCTION ３－１． External drawing……………………………………………………………… 6 ３－２．...
  • Page 3 ５－５． Maintenance and adjustment ５－５－１． Maintenance mode………………………………………………… 26 ５－５－２． Zero adjustment…………………………………………………… 27 ５－５－３． Confirmation of alarm level ……………………………………… ５－５－４． Alarm test ………………………………………………………… 29 ５－６． How to finish operation……………………………………………………… 30 ６．KINDS OF ALARM AND ITS FUNCTION ６－１． Kinds of alarms …………………………………………………………… 31 ６－２．...

  • Page 4: １．Product Outline

    First of all, we wish to express our heartfelt thanks for your purchase of our intelligent gas detector GD-K71D. This manual is just a guide book to operate our gas detector GD-K71D. Your kind reading of this manual is requested not only for first user but for already experienced staff.

  • Page 5: ２．Important Instruction For The Safety

    ２．IMPORTANT INSTRUCTION FOR THE SAFETY ２－１．Danger items DANGER This is not an explosion proof detector. Never to detect high concentration gas beyond their lower explosive limit. ２－２．Warning items WARNING ○ Power source Before turning the power on, check that the supplied voltage is within the specified voltage. Then, turn the power on ○...

  • Page 6: ２－３．Caution Items

    WARNING ○ Treatment at gas alarming It is very dangerous if the instrument detects the gas exceeded the alarm points. Take any treatment based on your judgment at that time. ２－３．Caution items CAUTION ○ Do not use a walky-talky around the instrument. The indication might be affected by the electromagnetic wave generated by the walky-talky if it is used near the instrument.

  • Page 10: ３－３．Installation Pitch

    ３－３．Installation pitch Keep the space of this oblique part as the installation space. Wall Fig. 1: Dimension of mounting pitch （１）Install the wall mounting bracket on the wall. （２）Put the detector unit on the wall mounting bracket. ！ CAUTION Confirm that the detector unit is surely fixed to the wall mounting bracket after finishing the job.

  • Page 14: ４．How To Use

    ４．HOW TO USE ４－１．Before operation Be sure to keep caution items of use not only for first user but for already experienced staff. If not keep these caution items, the unit may be defective and correct gas detection may not be performed.

  • Page 15: ４－３．Caution In The System Engineering

    Do not install it where it is difficult to make maintenance Do not install the detector at places where; * It is required to stop operation of the equipment where gas detector is installed at maintenance work. * It cannot make maintenance without taking off a part of equipment. * Casing cannot be removed by pipings, rack, etc.
  • Page 16 （３）Lightning measures There is the problem “Lightning”. When make outdoor wiring of cable at factory or plants etc or when make a parallel wiring in the same duct with the cable in from outdoor even at the indoor wiring. If the Lightning lightning is a huge generation source, the cable is a reception antenna surge...
  • Page 17 ＧＤ－Ｋ７１Ｄ －How to think alarm contacts against inductive load－ The spec for alarm contact of GD-K71D is described by the conditions of resistive load. When use the inductive load for alarm contacts, the very high reverse electromotive voltage may be generated and the following trouble tends to be produced.

  • Page 19: ４－５．Caution At Wiring Construction

    Signal : Use CVVS 1.25sq, 2-core cable CAUTION Size of leading cable to GD-K71D is up to 1.25sq. When use the cable exceeding 1.25sq., use the junction box etc. ４－６－２．Relay output signal cable Relay contact cable : Use VCTF 0.75sq., 6-core cable ４－６－３．Specifications of terminal...

  • Page 20: ４－６－４ Terminal Plate

    Trouble contact ― ＋ ― ＋ ALM２ contact 4～20mA ALM１ contact DC24V ４－７．Example of cable connection ４－７－１．Connection with indicator/alarm unit (EC-583, EC-573A): (3-wire type) GD-K71D ・ EC-583 Detector ・ EC-573A Short circuit 2 3 4 5 ③ ⑤ ＋２４V ④ ⑥...

  • Page 22: ５．Operation Method

    ５．OPERATION METHOD ５－１．Preparation before start up Before marking power on, take care of the following. If do not keep this, there is the danger ● of electrical shock and damage of detector. （１）Make grounding. （２）Check that the wiring with outer unit is made correctly. （３）Check that the power voltage is within the rating.

  • Page 31: ５－６．How To Finish Operation

    ５－６．How to finish operation When finish this operation, turn off power switch of this unit and turn off the main power (DC24V). WARNING ・When finish this operation, do it after making point skip with the upper system (Centralized system). ・ When finish this operation, check the external output and function of outer equipment to be connected with external alarm contact.

  • Page 32: ６．Kinds Of Alarm And Its Function

    ６．KIND OF ALARM AND ITS FUNCTION ６－１．Kinds of alarms There are two kinds of gas alarm and trouble alarm. Gas alarm : When the detection gas reaches to preset alarm level or exceeds it, this starts to function. 《Non-latched mode》 ＊...

  • Page 33: ６－２－２．Counteraction At Gas Alarm

    ６－２－３．Gas alarm possibility except the case of gas detection It may respond to interference gas For interference gases, contact the nearest agent or Riken Keiki. It may be caused by drifting due to the change of long time elapsed sensor Check the reading by daily check and make calibration through authorized service agent whenever necessary.

  • Page 34: ７．Maintenance Check

    To maintain the safety operation of the unit, it is recommended to keep the maintenance contract with service agent for regular maintenance, adjustment and overhaul etc including the gas sensitivity adjustment. For the detail of maintenance contract, contact our nearest service agent or Riken Keiki.

  • Page 35: ７－２．Calibration Method(Calibration With Gas, Etc.)

    For gas calibration, contact our nearest agent or Riken Keiki. ７－３．Replacement of sensor and parts. CAUTION For replacement of sensors and parts etc, contact our nearest agent or Riken Keiki. ７－４．Treatment when operation is stopped or its installation place is moved.

  • Page 36: ７－６． List Of Recommendable Spare Parts For Regular Maintenance

    ７－６．List of recommendable spare parts for regular maintenance Maintenance Replacement Name of parts Q’ty/unit interval Interval(year) Pump (without diaphragm) 6 months 1～3 Pump diaphragm 6 months 1～2 Pump holder 1 year 3～6 Fuse 1 year Main PCB －－－ 7～8 Sub PCB 9～10 －－－...

  • Page 37: ８．Treatment At Abnormal Case

    ８－２．Counteraction at trouble alarm When any trouble was found on this gas detector, contact our nearest agent or Riken Keiki. If trouble should take place, we try best to search its cause and prevent its cause. ８－３．Before it is thought to be a trouble It may be originated from disconnection and short circuit between units.

  • Page 38: ８－４．Trouble Shooting

    Check “whether sensor is connected” or “the sensor cable connector is connected to the sensor or amplifier board.” If can not be recovered, contact our nearest agent or Riken Keiki. ③ Abnormal function for zero correction 「E-04」 ・Zero correction was out of available range due to sensor drift.
  • Page 39 ・Due to the clog of dust filter, the pump can not suck. Replace the dust filter with new one. ・The pipe at gas-inlet side or gas-outlet side is broken or clogged. In this case, repair the defective part. (5) Slow Response <...

  • Page 40: ９．Definition Of Terms

    ９．DEFINITION OF TERMS Flowmonitor Gas sample flow rate supplied to the sensor is indicated. The standard flow rate of this detector is 0.5L/min. Low flow alarm When the sample flow rate to the sensor is dropped, this is the function to give an alarm. PW/TR light flashes and “E-05”...
  • Page 41 Zero suppression This is the function to blur the environment change or the influence of interference gas. Alarm delay time To prevent the alarm error by noise intruded from the outside, this is the function to suspend the running temporarily. Alarm response time It is the time until the alarm is given when exposed to gas concentration of 1.6 times alarm preset level.

  • Page 42: １０．Detection Principle

    １０．DETECTION PRINCIPLE This gas detector applies an electrochemical sensor. The sample gas is electrolyzed by the electrolyzed cell added with specific electric potential (bias voltage) and detected from the electrolyzed current generated at that time. The electrochemical sensor is designed to keep the interface between electrode and electrolyte at a constant potential (Bias voltage) and is the method to electrolyze gas directly.

  • Page 43: １１．List Of Product Specifications

    １１．LIST OF PRODUCT SPECIFICATIONS 11－1. Specifications Model : GD-K71D Transmission method : Electric current transmission method, 3-wire (or 4-wire), 4～20mADC Gas concentration signal : 4～20mA(Linear up to 22mA) Initial clear signal : 2.5mA Maintenance signal : 2.5mA Trouble signal : 0.5mA, non-isolated (max. load : 300Ω at 24VDC)

  • Page 44: １１－２． Product Composition

    : 70(W)X170(H)X153(D)mm Weight : Approx 2.0kg. * NOTE Specifications subject to change without notice for improvement 11－２．Product composition Standard compositions ・ Gas detector GD-K71D ・ Accessories Dust filter ……1 pce. Gas inlet/outlet cap……2 pcs. Fuse……Depends on ordered quantity Q’ty/order Fuse supplied 1 ～...
  • Page 45 TYPICAL DETECTION GASES AND APPLICABLE FILTERS (EXAMPLE) Chemical Detection Preset Applicable Detection gas formula range alarm level filter (standard) Ammonia 0～75 25 ppm Antimony SbCl5 HCl 0～15 5 ppm Pentachloride Arsenic AsCl5 HCl 0～15 5 ppm Pentachloride HF 0～9 Arsenic AsF5 3 ppm Pentafluoride...
  • Page 46 Chemical Detection Preset Applicable Detection gas formula range alarm level filter (standard) Phosphorus PCl3 HCl 0～15 5 ppm Trichloride Phosphorus 0～10 2 ppm Trifluoride Silane SiH4 0～15 5 ppm Silicone SiCl4 HCl 0～15 5 ppm Tetrachloride Silicone SiF4 HF 0～9 3 ppm Tetrafluoride Sulfur Tetrafluoride SF4...

Table of Contents