GP-03 Series gas monitor

  • Measuring Combustible Gas
  • Operates 3,000 hours on alkaline
    Pocket size 2.1” x 2.6” x 0.9”
  • Lightweight, 2.8 ounces
  • IP-67
  • Data log from 5 to 300 hours
  • Audible / visual / vibration alarms
  • Automatic backlight
  • Peak Hold, STEL & TWA
  • Intrinsically safe, ATEX & CSA
  • Description
  • Features
  • Applications
  • Specifications
  • Parts
  • Download
  • Training Video

The 03 Series single gas monitors are designed for LEL, O2, H2S, or CO detection. Individuals need personal protection in hazardous areas at all times without adding extra bulky equipment, and the 03 Series can provide that kind of protection at an affordable price. The GP-03, OX-03, CO-03, and HS-03 models are personal single gas monitors designed for protection from exposure to combustible hydrocarbons, oxygen deficiency, hydrogen sulfide, or carbon monoxide.

  • Available for LEL, O2, H2S, or CO
  • Operates 3,000 hours on alkaline
    (GP-03 up to 35 hours)
  • Pocket size 2.1” x 2.6” x 0.9”
  • Lightweight, 2.8 ounces
  • IP-67
  • Data log from 5 to 300 hours
  • Audible / visual / vibration alarms
  • Automatic backlight
  • Peak Hold, STEL & TWA
  • Intrinsically safe, ATEX & CSA
  • 3 Year warranty H2S & CO
  • 2 Year warranty LEL & O2
  • Hazardous Material
  • Mining
  • Tunnels
  • Refineries / Petrochemical
  • Water / Wastewater Treatment
  • Pharmaceuticals
  • Utilities
  • Chemical Plants
  • Fire Services
Model NameCO-03HS-03OX-03GP-03
Gas DetectedCarbon Monoxide (CO)Hydrogen Sulfide (H2S)Oxygen (O2)Combustible gas
Detection PrincipleElectrochemicalGalvanic cellCatalytic combustion
Detection Range
(Increments)		0 – 500 ppm
(1 ppm)		0 – 100 ppm
(0.5 ppm)		0 – 40%vol.
(0.1% vol.)		0 – 100% LEL
(1% LEL increments)
Alarm Set Points1st 25 ppm
2nd 50 ppm
TWA 25 ppm
STEL 200 ppm
Over 500 ppm		1st 5.0 ppm
2nd 30.0 ppm
TWA 1.0 ppm
STEL 5.0 ppm
Over 100.0 ppm		Low 19.5% vol.
High 23.5% vol.
Over 40.0% vol.		1st 10% LEL
2nd 50% LEL
Over 100% LEL
Alarm Types
  • Gas alarms: 1st and 2nd (user adjustable), OVER alarm, STEL and TWA
  • Trouble alarms: Sensor connection, low battery circuit failure, and calibration range error
Alarm Methods
  • Gas alarm: Flashing LED’s, intermittent buzzer, flashing gas value, and vibration
  • Trouble alarm: Flashing LED’s, intermittent buzzer, and display of error message
  • STEL & TWA alarms: Flashing LED’s, intermittent buzzer, flashing gas value, and vibration
Gas SamplingDiffusion
Response TimeT90 in 30 secondsT90 in 20 seconds
(Alarms within
5 seconds when exposed to 12% O2)		T90 in 30 seconds
Accuracy
which ever is greater		± 5% of reading or ± 5 ppm CO± 5% of reading or ± 2 ppmH2S±0.5% O2±0.5% of reading or ±2% LEL
Power OptionsAlkaline dry cell (2-AAA size)Alkaline dry cell (2-AAA size)
Ni-MH battery
Continuous OperationAlkaline dry cell: more than 3,000 hours
(at 25°C, no backlight)		Alkaline: 35 hrs
Ni-MH: 30 hrs
Safety RatingATEX/IECEx approved. CSA classified, “C/US”, as intrinsically safe, Class I, Division 1, Groups A, B, C, D
Dimensions & Weight2.1” W x 2.64” H x 0.94” D, (54 x 67 x 24 mm); 2.8 ounces (80 g)
DisplayDigital LCD, gas name & concentration, auto backlighting during alarm, operation icon, battery icon
Operating Temp. & Humidity-4°F ~ 122°F (-20°C ~ 50°C);
Humidity below 90% RH (non-condensing)
Standard Accessories
  • Rubber protective boot
  • Alligator clip
  • Data logging software
  • Alkaline batteries
Optional Accessories
  • Calibration adapter
  • Charger unit
  • Calibration kit
  • Belt clip
  • Data logging download cable
  • Wrist strap
Special Functions
  • Manual backlight for LCD (automatically lit during alarm)
  • Peak hold, STEL & TWA
Warranty3 Year warranty2 Year warranty

Parts

Part #Description
ES-1821CO sensor
ES-1827IH2S sensor
NC-6264ALEL sensor
OS-BM2O2 sensor
07-6031Gasket for battery lid
07-6032Gasket between top case and bottom case
07-6033Gasket for sensor
07-6034Rubber sheet, Black,
10-1105-01Cross-recessed pan head screw M2×8 SUSXM7
13-0112RKHand strap
13-0121Alligator clip assembly with ring
13-0122Belt clip
13-0204RKSpring pin for clip
13-1116Screw for battery lid
15-0500Battery contact short
15-0501Battery contact piece (-)
15-0502Battery contact piece (+)
20-0325Rubber protection cover, Black
21-1908Battery lid
21-1909Battery contact piece holder
21-1910Bottom case (GP-03/OX-03)
21-1911Bottom case (CO-03/HS-03)
21-1912Top case
21-1913Top case asssembly
29-0652Panel sheet RKI version (GP-03)
29-0653Panel sheet RKI version (OX-03)
29-0654Panel sheet RKI version (CO-03)
29-0655Panel sheet RKI version (HS-03)
29-6100Water immersion sensing seal
30-1055Vibration motor
33-0175Hydrophobic filter for sensor
33-7106RKH2S scrubber filter for CO sensor, strip of 5
49-1110RKAlkaline battery AAA (2 required)
49-1312Ni-MH battery AAA (2 required)
51-1130LCD module
57-1282Main PCB assembly (GP-03)
57-1283Main PCB assembly (OX-03)
57-1284Main PCB assembly (CO-03)
57-1285Main PCB assembly (HS-03)
81-1146Calibration adapter

Datasheet can be downloaded here: datasheet

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