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GDA 2728 - E-Sense Oxygen (O2) Gas Detector (0-25% vol)

Manufacturer:
The GDA 2728 E-Sense Oxygen (O2) Electrochemical Gas detector is a Loop powered 4/20mA output device with a range of gas sensor has a range of 0-25% vol Oxygen.
Part Number: GDA-2728-25
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E-Sense is our new signature range of electrochemical gas detectors. This versatile unit boasts several great features including 2 or 3 wire operation, ability in the the 3 wire mode to be able to connect to either 4-20mA or 0-20mA controllers, it also boasts the ability to change the sensor detection range by half. Other features include;

  • A test pot (gives the ability to test system wiring and alarms)
  • Fine, course and span adjustment pots for more accurate calibration
  • Dedicated mA test points (for a single person calibration at the device).
  • New brass design to allow’s you to have options when it comes to servicing, you can either replace the whole brass head or you can just replace the sensor element held within the brass. Replacing the sensor element will reduce your servicing costs, all while using this new design has helped us to create a more reliable sensor with a better IP (Ingress Protection) rating with the non-reactive gases that now include a titanium sinting that will give you an IP53 rating.

Technical Information

Detectable Gas Oxygen (O2)
Detectable Gas Range 0-25% vol.
Measuring Units % vol.
Sensor Technology Electrochemical
Sensing Method Diffusion
Response Time (τ90) < 5-10 sec
Warm Up Time 1 min
Span Calibration Gas 20.9% vol./N2
Zero Calibration Gas N2 (5.0)
Functional/Bump Test Gas 18.0% vol./N2
Potential Sensor Operating Life 2 Years
Modes of Operation 2/3 wire
User Interface Type Calibration/Test potentiometers
Recommended Supply Voltage 24 VDC
Supply Current (Max.) 25 mA @ 24 VDC
Outputs 1 x Analogue
Output Specifications 2-Wire Loop Powered 4-20 mA / 3-Wire 0/4-20 mA
Analogue Output Specifications 560 Ω @ 24 VDC / 830 Ω @ 24 VDC
Dimension 155 x 130 x 70 mm (H, W, D) (PTFE 145 mm H)
Weight 325 g (PTFE 260 g)
Material Enclosure ABS Plastic
Material Sensor Brass / PTFE
Mounting Wall Mount
Mounting Height Mid
Cable Entry User defined
Operating Temperature -30 to 50 °C
Operating Humidity 5% to 95% RH (non-condensing)
Operating Pressure 800 to 1200 mbar
IP Rating Enclosure IP56
IP Rating Sensor IP53
Warranty 12 Months
Sensor Warranty 12 Months

E-Sense is our new signature range of electrochemical gas detectors. This versatile unit boasts several great features including 2 or 3 wire operation, ability in the the 3 wire mode to be able to connect to either 4-20mA or 0-20mA controllers, it also boasts the ability to change the sensor detection range by half. Other features include;

  • A test pot (gives the ability to test system wiring and alarms)
  • Fine, course and span adjustment pots for more accurate calibration
  • Dedicated mA test points (for a single person calibration at the device).
  • New brass design to allow’s you to have options when it comes to servicing, you can either replace the whole brass head or you can just replace the sensor element held within the brass. Replacing the sensor element will reduce your servicing costs, all while using this new design has helped us to create a more reliable sensor with a better IP (Ingress Protection) rating with the non-reactive gases that now include a titanium sinting that will give you an IP53 rating.