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Ammonia Sensor | GG-NH3 Stainless Steel Enclosure
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Ammonia Sensor | GG-NH3 Stainless Steel Enclosure

Order Number: GG-NH3-ST
Low to mid range ammonia sensor with stainless steel enclosure designed for wash-down areas, food processing areas, coolers, docks, freezers, etc.

Lead Time: 1 day

  • Now equipped with SAFECELL technology which checks the electrical viability of the electrochemical cell every 40 seconds. If it is determined that the cell is failed or missing; the 4-20 mA output will drop to 0.5 mA and fault.
  • Includes a  2 year warranty on sensing element and transmitter.
  • 18 GA, NEMA 3RX washdown-duty stainless steel housing with hinged lid and captive screw.
  • Designed "food industry tough", the GG NH3 sensor uses an ammonia specific electrochemical cell, designed to adapt to any harsh environment from -50°F to +122°F.
  • Circuit board sealed in potting material to protect sensitive sensor components and copper tracing from corrosion.
  • Ideal for Engine Rooms, Freezers, Docks, Blast Cells, Food-Processing areas, Refrigeration Systems, Breweries, Refineries, and more.
  • Built in 3 stage heater for freezing temperatures.
  • Select from a list of available ranges (0-100, 0-250, 0-300, 0-500, & 0-1000ppm NH3). Custom ranges available upon request.
  • Part Number (specify range): GG-NH3-100-ST, GG-NH3-250-ST, GG-NH3-300-ST, GG-NH3-500-ST, GG-NH3-1000-ST.



7.5" high x 6.5" wide x 3.75" deep


4.0 lbs

Power Requirements

24VDC @ 350mA

Signal Output

4/20mA, 700 Ohm max input impedance

Temperature Range

-40F to +122F (-40C to +50C)


Electrochemical (diffusion method)
Certification ETL listed to UL standard 61010-1, and CSA standard C22.2 No. 61010-1-12
Warranty 2 years sensing element and transmitter
Please review these other products:

GG-NH3 Replacement Cell

Order Number: GG-NH3-RC
Replacement electrochemical NH3 cell for the GG-NH3. Also recommended for use with Manning EC-F2 / EC-F9 / EC-FX transmitters.

Lead Time: 1 day

Relay Module

Order Number: RM420-LR
Relay Module -  4-20 mA feed-through design maintains signal output function. Relay output with dry contacts, connects to CTI sensor enclosures. 

Lead Time: 1 day

Entrance Monitor | EM2

Order Number: EM2
The EM2 Entrance Monitor is used for remote display and/or as a single channel controller for gas detection systems.

Lead Time: 1 day