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Low Total Costs Of Ownership Single Gas Detector
Brand: WatchGas Detection
Made in: Netherlands

The UNI Disposable is a disposable and low cost of ownership, version of UNI Sustainable single gas detector. It detects H2S (Hydrogen Sulphide), CO (Carbon Monoxide), and O2 (Oxygen) in your selection of models for operation life of 12-months and 36-months. The detectors have a large LCD providing maximum readability in the field. Six bright red LEDs allow for quick alarm notification. Constructed of strong and durable material, the UNI Disposable is designed to be comfortable yet drop resistant. The UNI detectors can easily be bump tested and calibrated with the WatchGas UNI Mono/Multi Dock.


  • Size: 88 x 62 x 33 mm (3.46 x 2.44 x 1.3 in)
  • Weight: 125g (4.4 oz);
  • UL/cUL: Class I, Div 1, Group A, B, C, D; Class II, Div 1, Group E, F, G; Class III, Div 1;
  • Temperature rating T4, -20°C ≤ Tamb ≤ +50°C;
  • Event logger;
  • IP-68;
  • Large LCD, 30% larger than most gas detectors;
  • Password protection;
  • Low, High, Overrange and Low Battery alarms;
  • Six bright red flashing LEDs;
  • Two-point field calibration;
  • H2S, CO, and O2 versions available;
  • Models: MP103 for 36-months and MP101 for 12-months.


The UNI Disposable has very low total costs of ownership. It is available in a one-year and three-year version


It detects Hydrogen Sulfide (H₂S), Carbon Monoxide (CO) or Oxygen (O₂) in a selection of models with operating lives of 12 months or 36 months. The detectors have large LCDs providing maximum readability in the field. Six bright red LEDs allow for quick alarm notification. Constructed of strong and durable material, the WatchGas UNI Disposable is designed to be comfortable, yet impact-resistant. The UNI detectors can easily be bump tested and calibrated using the UNI Mono Dock and UNI Multi Dock.

Detector Specifications

Size 88mm (W) x 62mm (H) x 33mm (D)
Weight 125g
Sensor Technology 3 electrochemical sensors options
Temperature -20°C ~ +50°C
Humidity 5% ~ 95% RH (non-condensing)
Alarm Type High Alarm, Low Alarm, TWA Alarm, STEL Alarm, Over Range Alarm, Battery Low Alarm, Bumptest and Calibration due notification
Alarm Signal Acoustic: 95 dB @ 30cm
Visual: Red flashing LEDs
Vibration: Vibration
Display LCD Display
Calibration 2-point calibration, zero and span. Power-on zero calibration with user confirmation
Event Log Up to 50 alarm event
Battery 3.6AA Lithium battery for 1 or 3 years of operation, depending on the UNI
Measurement Diffusion
Housing Polycarbonate and rubber
Response time T90 15 seconds
Accuracy Deviation 2-3%
IP-Rating IP68
EMI/RFI Compliant with EMC 2014/30/EU
Safety Certifications UL: Class 1, Div 1, Group A,B,C,D
Class II, Div 1, Group E,F,G
Class III, Div 1 T4, -20°C < Tamb ≤ +50°C
ATEX: II 1G Ex ia IIC T4 Ga
IECEX: Ex ia IIC T4 Ga
CE: Conformite Europeenne
Warranty 1 year for the UNI Disposable of 12 months
3 years for the UNI Disposable of 36 months

Sensor Specifications

Model Detectable Gas Ranges Resolution Article Number
UNI Disposable CO 1 - 500 ppm 1 ppm M014-0001-W00 (12 months)
M016-0001-W00 (36 months)
UNI Disposable H2S 0.1 - 100 ppm 0.1 ppm M014-0002-W00 (12 months)
M016-0002-W00 (36 months)
UNI Disposable O2 0.1 - 30 %vol 0.1 %vol M014-0003-W00 (12 months)
M016-0003-W00 (36 months)

Product Application:

  • (Petro)chemical plants and factories
  • Tank storage parks
  • Wastewater treatment facilities
  • Mining industry
  • Construction sites
  • Food and beverage industry
  • Fumigation
  • Disinfection

Key Features

  • Low total cost of ownership
  • Large display
  • Durable housing
  • Solid stainless-steel alligator clip
  • Daily self-test
  • 50 event datalogging
  • Docking Station for calibration and event
  • CE, ATEX, UL, cUL and IECEX certified


Standard Equipment:



  • UNI Series Multi Docking Station
  • UNI Series Mono Docking Station
  • Calibration Gases

The contents are subject to change without prior notice.


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