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* KOSHA GUIDE : P-135/6-2018

  Calibration must be performed at a frequency requested by the manufacturer and shall be performed quarterly 

  when the calibration period is not specified.

Gas & Flame 

Detection System

GTD-1000Ex

Instruction Manual

www.gastron.com

02

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03

Greetings

When abnormalities occur after purchasing the product,

please contact the following address.

· Address  : 23 Gunpo Advanced Industry 1-ro,

  

  Gunpo-si, Gyeonggi-do

· Tel  

: 031-490-0800

· Fax  

: 031-490-0801

· URL 

: www.gastron.com

· e-mail 

: [email protected]

We sincerely thank you for purchasing the product of Gastron Co. Ltd. 

Our Gastron Co.Ltd. is a company specialized in Gas detector and Gas Monitoring System, being recognized 
by many consumers due to the best quality and use convenience. We always enable you consumers to find 
desired products nearby and are ceaselessly studying and striving for development of Gas detectors satisfying 
customers. From now on, solve all anguishes concerning Gas detector with the products of Gastron Co. Ltd, 
We Gastron Co. will take a responsibility and give you satisfaction.

In the present instruction manual, operation method for Gas detector as well as simple methods for 
maintenance and repair, etc. are recorded If you read it in detail and keep it well, for reference when you 
have questions, then it will give you much help.

The present product and the product manual can be changed without advance notice for performance improvement 
and use convenience of the product.

■ For accurate operation of Gas detector, check up and calibrate for more than once in every 6 months.

 

( * In reference to KOSHA GUIDE: P-135/6-2018 / 7.2 In-house inspection, section 2 )

■ For accurate operation of Gas detector, checkup and calibration with calibration gas before 

  measurement is recommended.

■ When not calibrated, it may cause malfunction of the equipment due to problems resulting from 

  Sensor aging.

■ When the present instrument should be dismantled, those with professional skills for Gas detector 

  should conduct the operation.

■ For power supply cable, wire specifications should be determined by referring to the item of "Length of  
  installed cable".
■ For the contents on checkup and calibration of Gas detector, please use our company's engineering  

  department , e-mail, or web site.

Summary of Contents for GTD-1000Ex

Page 1: ...vance d Industry 1 ro Bugok dong Gunpo si Gyeonggi do Tel 82 31 490 0800 Fax 82 31 490 0801 Yeongnam business office Plant 55 Gonghangap gil 85beon gil Gangseogu Busan Metropolitan City Tel 51 973 8518 Fax 51 973 8519 E mail info gastron com www gastron com Read in detail for correct use ...

Page 2: ... a responsibility and give you satisfaction In the present instruction manual operation method for Gas detector as well as simple methods for maintenance and repair etc are recorded If you read it in detail and keep it well for reference when you have questions then it will give you much help The present product and the product manual can be changed without advance notice for performance improveme...

Page 3: ... of Each Part 9 4 1 Components 9 5 Installation 11 5 1 Detachment of Housing Cover 11 5 2 Main PCB Configuration 12 5 3 Power and Signal Terminal Configuration 13 5 4 Method to Connect to External Control Unit 14 5 5 Installation Cable Length 15 6 Calibration and Maintenance 16 6 1 4 20mA Output Diagnosis 16 6 2 Gas Sensor Status Diagnosis 16 6 3 4mA Adjustment ZERO Calibration 17 6 4 SPAN Calibra...

Page 4: ...Cs Ex d llC T6 Basic Interface Analog 4 20mA current interface Option Rain Cover Warranty Transmitter 2Year Sensor 1Year ITEMS SPECIFICATION Explosion Proof type Explosion proof enclosure Dimension 136 W 166 H 95 D mm Weight including Sensor App 1 5kg Mounting type Wall mount Mounting Holes Ø 7 0 1 Cable inlet 3 4 PF 1 2 or 3 4 NPT Body material Transmitter aluminum alloy Sensor Stainless Steel ST...

Page 5: ...nsor Specification Pressure Range 90 to 110KPa Max air velocity 6m s 3 Specification GTD 1000Ex Instruction Manual NO NAME DESCRIPTIONS 1 Detector housing body Protects PCB Board built in Sensor and Housing from external environmental change and shock 2 Detector housing cover It is assembled with detector housing body and protects PCB Board built in Sensor and Housing from external environmental c...

Page 6: ...rew 5 Installation It is prohibited for an individual other than an approved user or a technician responsible for installation and repair from the head office to install a gas leak sensor on site or open the cover of the installed gas leak detector and manipulate it This may cause serious loss of life and property from fire explosion and etc In addition please check whether there is any remaining ...

Page 7: ... Signal Terminal Configuration After disassembling display parts there is a terminal block in the Main PCB as shown in the figure below Holding it with hands and pulling towards ceiling detaches it from the Main PCB Loosen 5 terminal fixing screws located at top part of detached terminal block CN8 VIS mA ETH Connector by turning counter clockwise using a Θ driver Connect DC 18 24 V power to and th...

Page 8: ...g voltage IMAX Max Current of GTD 1000Ex WIRER m The resistance of the wire ohms meter value available in wire manufacturer s specification data sheet Example of installation lengths using 24 V power supply and 16 AWG is as follows GTD 1000Ex minimum operating voltage 18 Vdc VMAXDROP 24 18 6V IMAX 0 2A 200mA 6 0 2 0 01318 2 1138 088m 1138m Figure 6 External Control Unit Connection Method Figure 7 ...

Page 9: ...lashes 3 times on FND1 and FND2 and it enters zero calibration mode When clean air or 99 9 nitrogen N2 is injected to cell part 4 mA output is observed If the output is not 4 mA adjust the potentiometer VR2 ZERO left and right to set 4mA Adjust ZERO potentiometer to obtain a current of 4 00 mA to be displayed on FND1 and FND2 When zero switch SW5 is pressed for 3 sec after output is set to 4 mA re...

Page 10: ... various types of combustible gas However each combustible gas has different properties including explosion range heat generation rate specific gravity etc therefore it is impossible to perform calibration with every standard gas Thus this product uses methane gas as a reference and applies comparative properties of each combustible gas analyzed as shown in the table below CH4 50 LEL calibration o...

Page 11: ... gas leakage is not expected but are easier for leaked gas to stay the detector must be installed at the point 1 of the following Gas leak detector alarm installed outside a building shall be installed at points where gas is likely to stay in consideration to wind direction wind speed specific gravity of gas etc Gas leak detector alarm installed inside a building shall be installed near the floor ...

Page 12: ...ed 5 threads or more Work in conditions satisfying other Standards for Selection Installation and Maintenance etc of Explosion proof Electric Machine and Equipment Wiring etc at Work Site All materials used for cable inlet such as cable gland and sealing fitting etc and used as sealing unused inlets must pass the verification VERSION CONTENTS DATE 0 0 Manual Initial Revision 2013 06 10 1 0 Drawing...

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