SKU: RKI01-72-0037

RKI Instruments 03 Series LEL Single Gas Monitor 72-0037

$359.69

Ships in 3 - 4 days

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Description

RKI Instruments 03 Series LEL Single Gas Monitor is designed for protection from exposure to combustible hydrocarbons. The GP-03 operates for 35 hours on alkaline and 30 hours on rechargeable Ni-MH. The 03 models have 2 preset alarms that are user adjustable. Each version is also equipped with visual, audible, and vibration alarms as standard. The RKI 03 Series Monitors are great in areas of hazardous material, mining, tunnels, refineries or petrochemical, water and wastewater treatment, pharmaceuticals, utilities, chemical plants and fire services.

Applications: Hazardous material, Mining, Refineries/petrochemical, Water/wastewater treatment, Pharmaceuticals, Utilities, Chemical plants, Fire services

Key Features:

Pocket size 2.1 in. (W) x 2.6 in. (H) x 0.9 in. (D)
Lightweight (2.8 oz.)
Impact, dust, and water resistant (IP-67)
Replaceable rubber boot
Data log from 5 to 300 hours with adjustable intervals
Audible / visual / vibration alarms
Automatic backlight
Low battery alarm

Specifications:

Combustible gas
Detection principle: Catalytic combustion
Detection range: 0 - 100 percent LEL
Alarm set points: 1st - 10 percent LEL, 2nd - 50 percent LEL, Over - 100 percent 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
Gas sampling: Diffusion
Response time: T90 in 30 seconds
Accuracy: 0.5 percent of reading or ±2 ppm LEL
Data logging: 10 second intervals = 5 hours, 5 minute intervals = 150 hours, 10 minute intervals = 300 hours. Instrument records alarms, alarm trends, gas readings, calibration & bump test history, instrument information and settings
Safety rating: ATEX/IECEx approved. CSA classified, C/US, as intrinsically safe, Class I, Division 1, Groups A, B, C, D (pending)
Enclosure: Dust and water resistant with IP-67 rating
Display: Digital LCD, gas name & concentration, auto backlighting during alarm, operation icon, battery icon
2 year warranty

Monitor Includes:

Rubber protective boot
Alkaline batteries
Alligator clip
Wrist strap
Data log software

Please Note: Once activated, these units cannot be shut down and will continue to run for their life span prohibiting these items from being shipped because the alarm may be activated during transit. Additionally, these items are unable to be resold after activation. Of course, if you haven't yet activated your monitor, we will happily take it back.

Optional Accessory: Downloading cable, USB / IrDA adapter

Part Numbers:
72-0037 - Monitor only
72-0037-05 - LEL-03 Monitor with alligator clip, alkaline batteries and calibration cup

Frequently Asked Questions

How long do alkaline batteries last in the RKI 03 Series LEL monitor?

On a fresh set of alkaline batteries, the 72-0037 delivers approximately 35 continuous operating hours. The display shows a low-battery alarm when charge falls below the safe operating threshold, giving workers advance notice to swap batteries before the instrument shuts down. Always keep a spare set of batteries on site when deploying in the field.

What industries most commonly use diffusion LEL monitors like the 72-0037?

Diffusion LEL monitors are standard across refineries, petrochemical plants, water and wastewater treatment facilities, mining operations, pharmaceutical manufacturing, and utility infrastructure. Any environment where combustible hydrocarbons may accumulate — tanks, tunnels, confined spaces, or process areas — benefits from a pocket-sized clip-on LEL monitor. See the full LEL gas monitors collection for related instruments.

What data logging capabilities does the 03 Series provide?

The 72-0037 logs gas readings, alarm events, alarm trends, calibration history, and bump test records. Logging intervals are adjustable: 10-second intervals capture 5 hours; 5-minute intervals capture 150 hours; 10-minute intervals capture 300 hours. Data is retrieved via the optional USB/IrDA downloading cable (sold separately) using the included data log software.

Does PK Safety offer calibration and repair for the RKI 03 Series?

PK Safety services RKI instruments in-house with factory-trained technicians. We provide NIST-traceable calibration, sensor replacement, and repair for the RKI 03 Series portable monitors. Calibration records and service documentation are provided with each instrument. Call 800.829.9580 or visit our gas detection page to learn more about calibration services.

What does the OVER alarm signal on the 03 Series monitor indicate?

The OVER alarm activates when the detected combustible gas concentration reaches or exceeds 100% of the Lower Explosive Limit (LEL). At this level, the atmosphere contains enough flammable vapor to sustain combustion if an ignition source is present. OSHA 29 CFR 1910.146 and NFPA standards require immediate evacuation when explosive concentrations are detected. The 72-0037's three-alarm progression — first, second, and OVER — gives workers graduated warning before conditions become critical.

Can the alarm setpoints be adjusted on the 03 Series LEL monitor?

Yes. Both the first alarm (default: 10% LEL) and second alarm (default: 50% LEL) setpoints are user-adjustable to match your site safety program. Adjustments are made via the 04 Series Setup Program using the optional downloading cable. STEL and TWA alarm setpoints are also configurable. Contact PK Safety at 800.829.9580 if you need guidance on appropriate setpoints for your application.