Starting at $470.00
Starting at $376.00

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Contact Instrumart for warranty & non-warranty repairs, as well as calibrations, of the RKI Instruments GX-2009


  • Accuracy:
    • ±5% of reading or ±2% LEL for combustible gases
    • ±5% of reading or ±2ppm for H2S
    • ±5% of reading or ±5ppm for CO
    • ±0.5% for O2
  • Large capacity data logging standard
  • Intrinsically safe
  • Small compact design
    • 2.7 x 3 x 1 inches
  • Impact resistant rubber over-mold body
  • IP-67 water resistant & dust proof
  • 2-year warranty

What's in the Box

  • Wrist strap
  • Two NiMH batteries with hardware
  • Product CD

The RKI Instruments GX-2009 confined space monitor can monitor up to four gases and display values for LEL, O2, H2S, and CO simultaneously on a large LCD display. The user adjustable alarms include vibration, audible, as well as bright visual alarm LEDs located on three sides of the instrument to alert from multiple perspectives.

The GX-2009 features auto-calibration, calibration and bump test lock out or reminder control, STEL and TWA readings, and peak hold. It also includes a data logger with up to 300 hours of log time, eight alarm trends, and capacity to store up to 100 calibration records. The software is Windows XP, 7, 8, and 10 compatible.

Applications include personal monitoring, confined spaces, refineries, petrochemical, utilities, oil and gas, water and wastewater, fire services, and construction.

RKI Instruments also offers the GX-2009 with US Department of Labor Mine Safety & Health Administration (MSHA) approval.

RKI Instruments RP-2009 Pump
Includes internal dust filter, available with up to 20 feet of hose & probe
RKI Instruments Portable Replacement Sensors
Replacement sensors for RKI Instruments portable gas detectors
In Stock
RKI Instruments Gas Cylinder
Available in 34, 58, 103, 166 liters, steel or aluminum
RKI Instruments 12 VDC Adapter for Charger
Includes vehicle plug, charger base not included
RKI Instruments 12VDC Charging Station
Single unit charging station includes vehicle adaptor plug, for GX-2009
RKI Instruments Hand Aspirated Sampler
Sampler with probe & up to 100ft of hose
RKI Instruments 47-5084RK-01 Downloading Cable
USB to IrDA adapter for Windows XP, 7 & 8 to connect computers that do not have a built-in IR port
RKI Instruments NiMH Battery Set
Set of 2 batteries, includes hardware
RKI Instruments 13-0119 Alligator Clip
For GX-2009 confined space monitor
RKI Instruments 20-0115RK Carrying Case
Padded case with room for accessories
RKI Instruments GX-2009 Belt Clip
Includes 3 installation screws
RKI Instruments SDM-2009 Calibration Station
Stand alone calibration station for GX-2009, includes AC adaptor, flash drive, USB cable, tubing & installation CD
RKI Instruments 81-1107RK Calibration Cap
Rubber sample cap for use with GX-2001 & GX-2009 gas detectors
In Stock

Application Notes

Here's how some of our customers used this product.

Inspecting and Repairing Large Fuel Tanks

The Background: Our customer is an oil refinery that needs gas detectors for use when inspecting and repairing fuel tanks at a tank farm.

The Problem: The monitors will be worn when inspecting and working on fuel tanks. The monitor must be able to protect against low oxygen level and combustible gases. The customer is most concerned with reliability, comfort and ease of use.

The Solution: We recommended the RKI Instruments GX-2009 confined space monitor which can monitor up to four gases and display values for LEL, O2, H2S, and CO simultaneously on a large LCD display. The customer especially likes the small size and simplicity of the monitor. The customer also trusts the RKI brand.

Personal Safety for Fire Inspectors

The Background: Our customer is a fire inspector who needs reliable gas detection when investigating the site of a fire to determine the cause.

The Problem: Some fires that need to be investigated occur in commercial or industrial facilities that may contain toxic or combustible gases unknown to the inspector. To ensure personal safety in such situations, the inspector requires an easy-to-use multi-gas detector that can be worn during investigations.

The Solution: We recommended the RKI Instruments GX-2009 confined space monitor which can monitor up to four gases and includes an intrinsically safe approval for Class I, Division 1, Groups A, B, C, D. The GX-2009 is small enough to be unobtrusive and the user-interface is designed for ease of use.

Personal Safety in a Chemical Plant

The Background: Our customer is a company manufactures industrial gases and requires personal gas detectors for their employees.

The Problem: With a number of toxic and combustible gases produced at their facility, our customer wants personal gas monitors as a safety measure for employees who work with those gases to protect against exposure from leaks or other accidents. The customer is most concerned with long battery life, form factor, and simplicity of use and maintenance.

The Solution: We recommended the RKI Instruments GX-2009 confined space monitor which can monitor up to four gases. The GX-2009 is the smallest and lightest 4-gas monitor on the market, measuring just 2.7 x 3 x 1 inches, and can run for up to 20 hours per charge. The GX-2009 is designed around RKI’s compact and proven sensors, utilizing catalytic combustion, electrochemical and galvanic sensor technologies. Each miniaturized sensor is manufactured with the same high quality control that has made RKI sensors and instruments the most reliable and long lasting monitoring devices in the industry.