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04 Series Ammonia Single Gas Detector

The 04 Series single gas monitor is designed to operate for many years with field replaceable sensors and filters.


SKU 73-0077 Categories , Tag



The 04 Series Ammonia single gas monitor is designed to operate for many years with field replaceable sensors and filters. The 04 Series can be operated continuously for up to 9,000 hours on 2 AAA size alkaline batteries (depending on model). The 04 Series has 3 preset alarms that are user adjustable. Each version is also equipped with visual, audible, and vibration alarms as standard.

The replacement sensors are inexpensive, easily field replaceable, and are interchangeable with other popular RKI instruments like the GX-3R, GX-3R Pro, and GasWatch 3. Sensors have a life expectancy of over 1 year and are backed by a 1 year warranty.

Each 04 Series monitor is impact, dust, and water resistant with an IP-67 ingress protection rating. 04 Series instruments are safe for use in hazardous locations, classified as intrinsically safe ATEX/IECEx and by QPS to U.S. and Canadian standards for Class I, Division 1, Groups A, B, C, and D atmospheres.



Tags: Ammonia Gas Detector, Single Gas Detector

Additional information

Weight .8 lbs


  • Range 0-400.0 ppm
  • Field serviceable
  • Pocket size 2.1”x 2.6”x 0.9”, 2.8 ounces
  • Impact, dust, and water resistant (IP-67)
  • Replaceable rubber boot
  • Alligator clip with 360° rotation
  • Audible, visual, vibration alarms
  • Automatic backlight
  • Intrinsically safe, ATEX and C/US approvals
  • 1 Year warranty


Sample Method Diffusion
Response Time T90 in 30 seconds
Alarm Gas Alarm: 1st, 2nd, 3rd (user adjustable), OVER alarm, STEL and TWA
Trouble Alarm: Sensor connection, low battery, circuit failure and calibration rang error
Battery Alkaline dry cell 2 AAA size
Display Digital LCD, gas name & concentration, auto backlighting during alarm, operation icon, battery icon
Alarm Flashing LEDs
Datalogging 10 second intervals, records alarms, alarm trends, gas readings, calibration & bump test history and instrument settings
Enclosure Dust and water resistant with IP-67 rating
Temperature -4 to 122°F
Humidity 0% to 90% relative humidity (non-condensing)
Intrinsic Safety UL: Class I, Division 1, Groups A, B, C, D
Size 2.1″ x 2.64″ x .94″
Weight 2.8 ounces
Warranty 1 Year warranty


04 Series Ammonia Single Gas Monitor Datasheet

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