Chapter 5 Calibration; Calibrating The Orion G Multigas And Leak Detector - MSA Orion G Mode D'emploi

Operating Manual
Chapter 5
Calibration
Calibrating the Orion G Multigas and
Leak Detector
Each Orion G Multigas and Leak Detector is equipped with an
autocalibration feature to make unit calibration as easy as
possible.
The Autocalibration sequence resets instrument zeroes and
adjusts sensor calibration for known concentrations of
calibration gases.
Table 5-1. Autocalibration and Required Calibration Cylinders
EXPECTED GAS
SENSORS
CONCENTRATION
Combustible 2.5% CH
Oxygen 15%
Carbon Monoxide 300 ppm
Hydrogen Sulfide 10 ppm
To Calibrate the Orion G Multigas and Leak
Detector (FIGURE 5-1):
1. Turn ON the instrument and verify that battery is
sufficiently charged.
2. Push and hold the CHANGE/RESET button until the
ZERO flag flashes in the upper portion of the display
(FIGURE 5-2).
• Indicates instrument is in the Calibration mode.
3. Push the ON-OFF/PAGE button to zero the instrument.
• You must be in fresh air to perform the zero.
• The ZERO flag stops flashing and remains ON.
NOTE: To skip the zero procedure and move directly to the
calibration span procedure, push the
CHANGE/RESET button. If no button is pushed for
Chapter 5, Calibration
FOUR
GAS CYLINDER
(P/N 813720)
•
4
•
•
•
THREE
GAS CYLINDER
(P/N 10028056)
•
•
•
5-1