INFORMATION SHEET
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The GDA 2526 Ammonia (NH₃) gas sensor is a 2 wire 4-20 mA Loop Powered device. It has an electrochemical sensing unit which is temperature compensated and easily replaceable.

Designed, manufactured and supported locally in Australia.

The ammonia gas sensor electronics are housed in a robust ABS sun tolerant plastic enclosure. The sensor element is on a pluggable lead allow ease of replacement.

  • Available in 0-100 ppm, 0-300 ppm, 0-1000ppm and other ranges on request.
  • 4-20 mA o/p (For Voltage Output see the GDA 2626)
  • Low cost replaceable gas sensor element
  • Easy to install
  • Easy to calibrate (only gas and multimeter required)
  • ABS sun tolerant housing
  • Australian Factory Certificate of Calibration

Poisoning: GDA sensors are designed to operate in a wide range of harsh environments and conditions. However, it is important that exposure to high concentrations of solvent vapours is avoided, both during storage and operation.

Made in Australia and Supported in Australia


Related Products


Refrigerant Plant Room Monitoring

Refrigerant gases are used to provide a means of cooling the evaporators in freezers and air conditioning for plant rooms and chiller plants. Historically CFC refrigerant gases such as R11, R12 and R22 have been used. CFC’s are ozone depleting gases and are now being phased out and replaced by ozone friendly gases such as R134a, R407 and R410a.

Why is there a need to detect them?

  • All these gases are toxic at relatively low levels. Prolonged exposure to these gases is hazardous and results in serious health risks. GDA sensors can detect these gases at very low levels, in order to prevent this hazard becoming a danger to life.
  • Air conditioning systems and chillers that are leaking their refrigerant gases are not performing to maximum efficiency. The major use of refrigerant gases is in the re charging of these systems. If leaks are detected early the problem can be alleviated much quicker, saving costs on replacement gas, co maintenance and protecting the environment.
  • Gas detection at low levels (part per million) will give an early warning of leakage, therefore safeguarding life and maintaining the efficiency of the plant.

Gas Detection Australia has a range of ultra-low level refrigerant gas leak detection systems specifically developed to prevent the expensive results of refrigerant gas leaks for R22, R123, R134a, R404, R407, R410a, R514a, R1234yf and many others.

Meets the requirements of AS/NZS 5149.3:2016 and ISO 5149-3:2014

Designed, Manufactured and Supported in Australia.

Cold Room Monitoring

The use of Carbon Dioxide gas detectors / gas sensors or Nitrogen gas detectors / gas sensors in cold rooms can result in asphyxiation if the levels get too high . Work place health and safety places a requirement for monitoring these gases

Meets the requirements of AS5034-2005

Designed, Manufactured and Supported in Australia.

Specification NameSpecification Value
Detectable GasesAmmonia (NH₃)
Detectable Gas Ranges0-100 ppm, 0-300 ppm or 0-1000ppm
Maximum Overload2526-001: 200 ppm; 2526-003: 500 ppm; 2526-005: 1500 ppm.
Cross SensitivityHydrogen Sulphide 120% | Sulphur dioxide -30% | Nitrogen Dioxide -65%
Power Requirements+24 VDC
Output Types4-20 mA Loop Powered
Power Consumption<25 mA @ 24 VDC
Output SpecificationsMax loop impedance 680 Ω @ 24 VDC
Connection3 pin plug connector
Wiring2 core 18 AWG with overall screen
Operating Temperature10°C to 50°C (LT version -40°C to +10°C) Accuracy varies outside of range
Operating Humidity15% to 90% RH peak non condensing
Operating Pressure800 to 1200 mbar
Accuracy of Reading± 3% of full scale reading in standard operating environment
Warm Up Time30 seconds
Response TimeT90 = 60 seconds at SATP
Zero Drift< 0.1% / 30 days
Calibration Drift< 025% / 30 days at SATP
Sensor TechnologyElectrochemical Cell
Calibration RequirementEvery year with 6 monthly functional tests if sensor operated at SATP
Typical Operating Life2 years before requiring sensor head replacement in standard operating environment
Warranty12 months from date of dispatch
Dimensions155 x 130 x 70 mm (H, W, D)
Weight315g
Enclosure RatingIP56 with sensor element IP22
Enclosure MaterialABS plastic & Brass C385
Cable EntryUser provided

GDA 2526 Ammonia (NH₃) Gas Sensor

  • GDA 2526 Fixed Gas Sensor Trasmiter & Module
  • User Manual
  • Australian Factory Certificate of Calibration
Part Number Range Replacment Sensor Module
2526-001 0-100 ppm 2526-002
2526-003 0-300 ppm 2526-004
2526-005 0-1000 ppm 2526-006

 

Accessories

Part Number Image Description
GC01-001 Gassing Cap with 500mm Length vinyl tubing
2500-005 4 x 10-24 x 3/4 (T25) Tamper Proof Security Machine Screws for GDA 2500/2600 Series Lid. incl. Wrench Key

 

 

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CALGAS : Calibration Gas

To test and maintain accuracy gas detection systems require regular testing and calibration. GDA can provide you with a complete line of calibration equipment to calibrate all of our gas sensors and detectors. Our calibration gas cylinders all come with N.I.S.T. certification and ISO 17025 approval so you can be confident that you will receive gas with the highest accuracy levels.