OVERVIEW
It operates from 24 VDC and gives a 4-20 mA o/p over the range 0-100% LEL of the gas to which it is calibrated to. The sensor also has two users settable alarm points with the associated output SPCO relays as well as a dedicated FAULT relay .The unit can be programmed and calibrated without opening. The display indicates the gas level reading. It is fitted with a sensor splash cover giving a head IP rating of IP66. The sensor is available for use with specific hydrocarbon gases and also CO2. The sensor has 2 user programmable alarm relays with volt free contacts as well as a fault relay with volt free contacts.
Key Features
- No over range problems associated with catalytic sensors
- Poison resistant to gases such as hydrogen sulphide
- Low operation cost single point calibration
- Built in back light LCD display
- Auto calibration and program setting without opening (no hot work permits)
- 2-stage alarm with 2 SPCO relays
- 1-fault relay SPCO
- 4-20 mA dc output signal (0-100% LEL)
- Optional modbus
APPLICATIONS
Hazardous Areas (IEC Ex Certified)
IEC Ex approved gas detectors and sensors for use in Zone 1 and Zone 2 areas within Australia for both Toxic and Flammable gases.
Hazardous Areas are areas in which an explosive gas atmosphere is or may be expected to be present, in quantities such as to require special precautions for the construction installation and use of equipment construction, installation and use of equipment. Hazardous areas are classified into 3 zones based upon the frequency of the occurrence and duration of an explosive gas atmosphere, as follows:
- Zone 0 – Area in which an explosive gas atmosphere is present continuously or for long periods or frequently.
- Zone 1 – Area in which an explosive gas atmosphere is in which an explosive gas atmosphere is likely to occur in normal likely to occur in normal operation occasionally.
- Zone 2 – Area in which an explosive gas atmosphere is not likely to occur in normal operation but, if it does occur, will persist will persist for a short period for a short period only.
- Non hazardous area (safe area) – A non hazardous area is an area in which an explosive atmosphere is not expected to be present.
As per IEC60079-10-1 and AS/NZS 60079.29.2:2016
Generator Rooms
A range of devices from single point go / no go detectors such as the DA-2010 through to sophisticated IEC Ex type gas detectors / gas sensors can be used for detection of Natural gas, Propane, Butane and various other mixtures.
Sewage Treatment Plant Monitoring
The presence of Hydrogen Sulphide can be detected by using the Gas Detection Australia GDA 2529 gas sensor to detect leaks of Hydrogen Sulphide and evoke deodorisation plant. The SI-100C gas sensor can be used to monitor for leaks of LEL levels of methane gas. In digester applications Carbon dioxide can be detected using the GDA 4350
Laboratory and Classroom Monitoring
When gas is piped into rooms for experimental purposes such as CO2, CO, or Natural Gas .The Gas Detection Australia range of sensors can be used to detect any leaks that may present a danger to health or explosion.
Designed, Manufactured and Supported in Australia.
SPECIFICATIONS
Measuring Type Diffusion Measuring Value Display Local digital LCD(OLED) display Means Value Display Back light, 2-line/16-characters LCD & OLED Approval Ex d IIC T6, IP65 Detectable Gas Combustible Gas, Carbon Dioxide(CO2), Carbon monoxide(CO) Measuring Method Non-Dispersive Infrared (NDIR Cell) Measuring Range Combustible Gas : 0~10,000ppm / 0~100%, LEL /
0~100% VOL
CO2 : 1.0% ~ 100% VOL
CO : 5% ~ 100% VOLResponse Time 90% of full scale in less than 10 seconds Accuracy ±3% / Full scale Zero Drift Less than 2% full scale Operating Temperature -20 to 60°C Operating Humidity 0 to 99% RH (Non-condensing) Analogue Signal Output Measurement output : 4-20mA DC/Full Scale
Diagnostic output : 3mA
Calibration output : 3mA
Faulty output : 2mAHART ®Interface HART REV7 / Optional Board (*1) Alarm Signal Output SPST Signal of Relay contact : 250V/1A Calibration Work Magnetic interface to configure alarm Cable Connection Length Max. 500m : 4~20mA signal
Max. 1000m : Isolated RS-485 SignalPower Supply 18-31V DC (DC 24V normal) / Max. 400mA Conduit Connection 1/2″ or 3/4″PF, NPT(Standard : 3/4″ PF) Signal cable Connection Power source + current : CVVS or CVVSB
2.0sq↑x 3wires shield
RS-485 communication : 1 par(UL2919 RS-485)Option HART ® Interface board, GTL-100 (explosion proof LED), Rain cover Dimensions 156(W) x 322(H) x 110(D) mm Weight Approx. 3.0kg
GDA 3000 – Carbon Dioxide Gas Detector (IEC Ex)
$0.00 ex GST
THE GDA 3000 is an Explosion Proof (IEC Ex) Flammable Carbon Dioxide Gas Detector. This Infra red sensor is certified for use in Zone 1 Hazardous areas within Australia.
