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Serie-03 Personal Gas Monitor

Measurement of O2,CO, H2S or cumbustible gases.


Aktuelles Datenblatt



The GP-03, OX-03, CO-03 and HS-03 models are personal gas monitors designed for personal rotection from combustible hydrocarbons, oxygen deficiency, hydrogen sulfide, or carbon monoxide.

The O2, CO and H2S versions can be operated continuously for at least 3,000 hours on (2) AAA size alkaline batteries. The GP-03 operates for 35 hours on alkaline and 30 hours on rechargeable Ni-MH batteries.

The 03 models have 2 preset alarms that are user adjustable. Each version ist also equiped with visual, audible and vibration alarms as standard.

The replacement sensors are inexpensive, easily field replaceable, and are intercangeable with other popular RKIinstruments like the GX-2009, GX-2012 and GasWatch2.

Each 03 Series monitor is impact, dust and water resistant with an IP-67 rating.


  • Detection of O2, CO, H2S or combusstible gases
  • Compact and light weight, only 80g
  • Impact,dust and water resistant (IP-67)
  • Datalogger 5-300 hours with adjustable intervals
  • Peak Hold, STEL & TWA
  • 3.000 hours continuous operation (GP-03 max. 35h)
  • ATEX II CT4 (Alkaline battery)
  • ATEX II CT3 (Ni-MH battery)






Measuring gas


Combustible gases




Hydrogen sulfide


Carbon monoxide

Measuring range

0-100% UEG

0-40.0% Vol.

0-100.0 ppm

0-100 ppm


1% LEL


0.5 ppm

1 ppm

Detection principle

Catalytic combustion

Galvanic cell

Electro-chemical cell

Electro-chemical cell

Sampling method


Data Logging

10 seconds intervales=5 hours, 5 minutes intervales=150 hours, 10 minutes intervales=300 hours

Instruments records alarms, alarm trends, gas readings, calibration&bump test history, instrument information and settings

Alarm indication

Gas Alarm: Flashing LEDs, Buzzer, Fkashing gas valuem Vibration

Touble Alarm: Flashing LEDs, continuous buzzer, display of error message

Alarm set points

(1) Alarm ≥ 10% LEL

(2) Alarm ≥ 50% LEL

Over Range ≥ 100% LEL

(1) Alarm ≤ 19,5%

(2) Alarm ≥ 18,0%

Over Range ≥ 40%

(1) Alarm ≥ 5.0 ppm

(2) Alarm ≥ 30.0 ppm

TWA ≥ 5.0 ppm

STEL ≥ 5.0 ppm

Over Range ≥ 100.0 ppm

(1) Alarm ≥ 25 ppm

(2) Alarm ≥ 50 ppm

TWA ≥ 25 ppm

STEL ≥ 200 ppm

Over Range ≥ 500 ppm

Alarm types

- Gas Alarm: 2 preset alarms, Over scale alarm, STEL, TWA

- Trouble Alarm: Sensor disconnection, Low battery, Calibration error, Clock error, System error

Operation temperature

and humidity

-20° ~ +50° C, 0~90% RH (Non-condensing)

-20° ~ +50° C, 0~95% RH (Non-condensing)

-20° ~ +50° C, 18~85% RH (Non-condensing)

Response time

90% response within 30 seconds

90% response within 20 seconds 90% response within 30 seconds

Operation time

Alkaline battery: Approx. 35h

Ni-MH battery: Approx. 30h

Alkaline battery: Approx. 3000h

Ni-MH battery: Approx. 2000h
Power source

2 AAA size Alkaline battery (optional AAA size Ni-MH battery)

Safety rating

ATEX Excia II CT4 (Alkaline batery)

ATEX Excia II CT3 (Ni-MH battery)

Dimensions and weight

Approx. 57(W) x 70(H) x 26(D) mm, 80g (with rubber protection cover)

Specifications subject to change without notice.