Specifications; Calibration / Challenge Test Gas Specification; Orion Specifications - MSA ORION Manual

Four-Head Gas Detector: MSA Orion
2.4

Specifications

2.4.1

Calibration / challenge test gas specification

Combustible gas:
Oxygen:
Carbon Monoxide:
Hydrogen Sulfide:
2.4.2

Orion specifications

Dimensions (wand removed): 10.2 x 6.8 x 17.3 cm
Dimensions carry case:
Weight (with wand and hose): 1 kg
Weight whole kit:
Temperature range:
Extended temperature range: –20 to 50 °C (when calibrated at temperature of use)
Warm-up time:
Battery:
Battery duration:
Regulator flow rate:
Protection rating:
Intrinsic safety:
D.I. Rec-ommended Practice
FILE: W:\NB\RP HMRU\Orion\Frame Ver 02\Orion.fm
58% LEL (1.45% by volume methane, to simulate the pentane
reading)
15%
300 ppm
10 ppm
15.5 x 48.5 x 37.5 cm
4.0 kg approx
0 to 40 °C (when calibrated at room temp)
25 seconds
3 x AA (LR6) alkaline cells. Use only Duracell
MN1500 Available on ESCAT, CI:00017), or
Energizer E91
10 hours (non-alarming)
0.25 litres per minute
IP54
Ex ia s Zone 0 1/IIC T4, –20 ºC < Ta < 40 ºC
This means the Orion is safe in environments,
including underground, with atmospheres of < 20.8%
oxygen and:
• Ambient temperatures between –20 ºC and 40 ºC.
• Explosive concentrations of any gas having an
ignition point above 135 ºC.
• Non-explosive concentrations of gas and/or dust.
• Explosive concentrations of methane and coal dust
continuously present.
• Explosive concentrations of gas groups IIA, IIB
and IIC continuously present.
For ambient temperatures between 40 ºC and 50 ºC,
the Orion is rated at T3, and is safe in an explosive
concentration of any gas having an ignition point
above 200 ºC.
Version 02
© Copyright
Issued February 2011
State of NSW (Fire and Rescue NSW) 2011
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