Related Manuals for Gas Detection GDA 2500 Series
Summary of Contents for Gas Detection GDA 2500 Series
- Page 1 Gas Detection (Australia) Pty Ltd GDA 2500 Series Loop Powered Sensor Operating Manual Manual Revision: 1.0 Hardware Version: 2.6 © Copyright Gas Detection (Australia) Pty Ltd 2019...
- Page 2 Thank you for purchasing this product from Gas Detection (Australia) Pty Ltd This manual contains information about the method of installation and operation of the GDA 2500 series of gas sensors. Please read it carefully and keep it nearby for further reference.
- Page 3 WARNINGS The GDA 2500 Series Sensors are only to be used in areas classified as SAFE AREAs. The sensor is not designed for use in classified HAZARDOUS AREAs. If GDA 2500 Series Sensors are used for safety critical applications the Calibration/Bump test period should be evaluated according to risk management procedure associated the area the sensor is installed.
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Page 4: Table Of Contents
Zero point Calibration ..........................12 5.2. Span point Calibration ..........................13 5.3. Test mA Output ............................14 Sensor Head Replacement (25xx-002): ..................... 15 Revision History ............................20 Gas Detection (Australia) Pty Ltd Page 4 of 20 M-GDA-2500 V2.6 Rev 1.0... -
Page 5: Overview
1. Overview: 1.1. Introduction The GDA 2500 Series gas sensors have a loop powered 4-20 mA transmitter with an electrochemical gas sensor module. The gas sensor transmitter is a current loop powered device which provides a 4-20 mA current value corresponding to the target gas concentration present. It accepts a range of electrochemical sensor modules see Table 2 for gas types and ranges. -
Page 6: Specifications
122/115 x 85 x 62 mm (H, W, D) IP Rating of Enclosure IP56 with sensor module IP53, PTFE IP22 Weight 320g, PTFE 260g Table 1: Specifications Figure 2: Sensor dimensions Gas Detection (Australia) Pty Ltd Page 6 of 20 M-GDA-2500 V2.6 Rev 1.0... -
Page 7: Sensor Specifications
To remain within an allowed drift of #% of Full Scale output. If target gas is expected to be present during normal operation the calibration period of the sensing element will be reduced Gas Detection (Australia) Pty Ltd Page 7 of 20... -
Page 8: Sensor Placement
Heavier gas: NO Not Recommended Lighter gases: YES Lighter gases: YES Recommended Figure 3: Sensor mounting orientation. Note the IP rating is only maintained in the normal orientation. Gas Detection (Australia) Pty Ltd Page 8 of 20 M-GDA-2500 V2.6 Rev 1.0... -
Page 9: Wiring Instructions
Output 4-20mA Cable Screen/Shield Earth Brass Sensor Module Earth Wire (If Provided) Sensor module Function LEDs Connector see Table 3 Replaceable Sensor module Figure 4: Sensor Wiring Gas Detection (Australia) Pty Ltd Page 9 of 20 M-GDA-2500 V2.6 Rev 1.0... -
Page 10: Operation
The GDA 2500 transmitter gas type selection jumper is factory set for the required target gas. Oxygen (O Toxic Gases; CO, NH S, SO & Cl Nitrogen Dioxide (NO Figure 5: JP1 gas type selection jumper Gas Detection (Australia) Pty Ltd Page 10 of 20 M-GDA-2500 V2.6 Rev 1.0... -
Page 11: Calibration And Functional Test
I- (-mA), I+ (+mA) Factory set LEDs Do not remove or add Jumpers Zero Span (Gain) Adjustment Pot Adjustment Pot Figure 6: Calibration adjustment pots and rang selection Gas Detection (Australia) Pty Ltd Page 11 of 20 M-GDA-2500 V2.6 Rev 1.0... -
Page 12: Zero Point Calibration
The recommended Zero point current should be equal to or below 4.00 mA and above 3.90 mA. d. The Zero point is now set, the Green LED should be illuminated; 3. Turn off nitrogen gas. Gas Detection (Australia) Pty Ltd Page 12 of 20 M-GDA-2500 V2.6 Rev 1.0... -
Page 13: Span Point Calibration
20.0 mA 17.4 mA 20.0 mA 1 ppm 25 ppm 25 ppm 3 ppm 10 ppm 2 ppm peak STEL 35 ppm 5 ppm 15 ppm 5 ppm Gas Detection (Australia) Pty Ltd Page 13 of 20 M-GDA-2500 V2.6 Rev 1.0... -
Page 14: Test Ma Output
Jumper in Test Adjustment Pot position Figure 7: JP2 Jumper in Test position mA Output Test Adjustment Pot Jumper in Norm position Figure 8: JP2 Jumper in Normal operation Gas Detection (Australia) Pty Ltd Page 14 of 20 M-GDA-2500 V2.6 Rev 1.0... -
Page 15: Sensor Head Replacement (25Xx-002)
10. Reconnect the replacement sensor Earth cable to the Incoming Cable Connector. 11. Reconnect the Incoming Cable Connector into the socket on main board. 12. Proceed to calibration of sensor. Figure 9: Replacement Sensor Gas Detection (Australia) Pty Ltd Page 15 of 20 M-GDA-2500 V2.6 Rev 1.0... - Page 16 LEDS Jumpers JP4 & See Table 3 JP3 See Figure 6 Span Adjustment Zero Adjustment Pot See Figure 6 Pot See Figure 6 Figure 10: Feature location. Gas Detection (Australia) Pty Ltd Page 16 of 20 M-GDA-2500 V2.6 Rev 1.0...
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- Page 19 Gas Detection (Australia) Pty Ltd Page 19 of 20 M-GDA-2500 V2.6 Rev 1.0...
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Page 20: Revision History
Gas Detection (Australia) Pty Ltd Unit K1, USQ, Baker Street Toowoomba, QLD 4350 PO BOX 597, Darling Heights, QLD 4350 +61 7 4613 5111 www.gasdetectionaustralia.com.au sales@gasdetect.com.au Gas Detection (Australia) Pty Ltd Page 20 of 20 M-GDA-2500 V2.6 Rev 1.0...