Gas Detection For Life

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Inert Space Monitoring - (a replacement for the Cannonball 3)

EAGLE 2It is important to use the proper type of gas meter while working in an inert atmosphere. Inert atmospheres are created when oxygen is displaced by an inert gas, and often a high concentration of explosive gas may be present.

An example of inert atmosphere is the nitrogen purged catalyst units at refineries. When workers perform any catalyst handling functions in the reactors special precautions are taken for their inert entry. In these low oxygen conditions, the standard catalytic bead sensor used for combustible gas detection does not operate correctly.

RKI’s Eagle 2 monitor uses an infrared (IR) sensor to detect combustible gas from 0-100% LEL. IR technology does not require oxygen for operation.

Made in U.S.A.

  • Features
  • Specifications
  • Gases
  • Download
  • Video


  • Specialty Sensors
    Infrared (IR) % LEL CH4
  • External dust filter
  • User select “Normal” or “Inert” mode
  • Preset alarm values for each mode type
  • Multilingual (5 languages)
  • Powerful long-life pump up to 125’ range
  • Low flow pump shut off and alarm
  • Alkaline 18 hours or NiMH 20 hours capability
  • Password protection
  • Datalogging standard
  • Autocalibration / single gas calibration
  • Internal hydrophobic dust filter
  • External probe with hydrophobic filter
  • Ergonomic RFI / EMI / chemical / weather resistant enclosure
  • Intrinsically safe design, CSA approval
  • Designed for catalyst operations at refineries


EAGLE 2 gas meters

  • Comparable to the Cannonball 3


Eagle 2 calloutsUnique EAGLE 2 features include PPM or LEL hydrocarbon detection at the push of a button; infrared sensors for CO2, methane or hydrocarbons in LEL and % volume ranges; PID sensor for detecting high and low ppm levels (0-50 & 0-2,000) of VOC gases; methane elimination feature for environmental applications; and a list of super toxic gases and measurable ranges. The EAGLE 2 has a strong internal pump with a low flow auto pump shut off and alarm, which can draw samples from up to 125 feet. This allows for quick response and recovery from distant sampling locations. The EAGLE 2 will continuously operate for over 18 hours on alkaline batteries or 20 hours on Ni-MH. A variety of accessories are also available to help satisfy almost any application such as long sample hoses, special float probes for tank testing, and dilution fittings, just to name a few. Datalogging is a standard feature for all sensors on all versions.


Weatherproof, chemical resistant, RFI / EMI coated high impact polycarbonate-PBT blend. Can operate in 2.0” of water without leakage. Ergonomically balanced with rugged top mounted handle. Water & dust resistant equivalent to IP65.


9.5” L x 5.25” W x 5.875” H


3.8 Lbs (standard 4 gas with batteries)

Sampling Method

Powerful, long-life pump (over 6,000 hours) can draw samples over 125 feet. Flow rate approximately 2.0 SCFH


3 display modes: display all gases, large font-autoscroll, or large font-manual scroll. Polyurethane protected overlay. Backlight, illuminates for alarms and by demand with adjustable time.


Readout can display in 5 languages (English, French, German, Italian, or Spanish.


2 Alarms per channel plus TWA and STEL alarms for toxics. The two alarms are fully adjustable for levels, latching or self reset, and silenceable.

Alarm Method

Buzzer 95 dB at 30 cm, four high intensity LED’s.


4 External glove friendly push buttons for operation, demand zero, and autocalibration. Buttons also access LEL/ppm, alarm silence, peak hold, TWA/STEL values, battery status, conversion factors, and many other features.

Continuous Operation

At 70°F, 18 hours using alkaline batteries, or 20 hours using Ni-MH.

Power Source

4 Alkaline or Ni-MH, size C batteries (Charger has alkaline recognition to prevent battery damage if charging is attempted with alkalines).

Operating Temp. & Humidity

-20°C to 50°C (-4°F to 122°F), 0 to 95% RH, non-condensing.

Response Time

30 Seconds to 90% (for most gases) using standard 5 ft hose.

Safety Rating

Intrinsically Safe, Class I
Groups A, B, C, D.

Approvals: CSA / CE

Standard Accessories

Shoulder strap, alkaline batteries, hydrophobic probe, and 5 foot hose, internal hydrophobic filter

Optional Accessories

  • Ni-MH batteries
  • Battery charger, 115 VAC, 220 VAC, or 12 VDC (charge time 4 hours)
  • Continuous operation adapter, 115 VAC or 12 VDC
  • Extension hoses


Two year material and workmanship

Specifications subject to change without notice. 

Gases & Detectable Ranges


Confined Space Gases

Gas Measuring Range Accuracy
(whichever is greater)

Oxygen (O2)

0 - 40% Vol.

0.5% O2

Carbon Monoxide (CO)

0 - 500 ppm

± 5% of reading or
± 5 ppm CO (*)

Hydrogen Sulfide (H2S)

0 - 100 ppm

± 5% of reading or
± 2 ppm H2S (*)

IR Sensors

Methane (CH4)

0 - 100% LEL

0 - 100% Vol.

± 5% of reading or
± 2% of full scale (*)


Special Features
  • Low flow alarm shuts pump off to avoid damage to instrument.
  • Hydrophobic filter disc in probe.
  • Internal hydrophobic filter.
  • Single gas calibration capability.
  • Methane elimination feature for environmental applications.
  • Security Password protected.
  • Meets EPA Method 21 protocol for fugitive emissions testing (most applications).
  • Plug and play toxic sensors.
  • Datalogging available for all configurations.
  • Transformer gas testing version available.
Specifications subject to change without notice. 

Introduction | Description | Operation
Calibration | Maintenance | Setup Mode | PID Sensor

This video is also available on Youtube and CD (by request)



In addition to monitoring for combustible gases, the Eagle 2 has the ability to monitor for rising O2 concentrations and toxic gases H2S and CO. The CO sensor will act as dual sensor for both carbon monoxide and hydrogen. Upon start up of the meter, the user selects either normal or inert mode to select the proper alarm levels for the application. With its powerful pump the Eagle 2 can be used with up to a 125’ hose, allowing the meter to stay with the hole attendant while monitoring the working conditions inside the cracking unit.

The Eagle 2 has the sensor technology needed for inert entry and is perfectly designed to withstand the extreme conditions surrounding the catalyst operations..