Single Gas Instrument Service Manual
Page 12
Bacharach, Inc.
Instruction
0019-9166
3.0 SENSOR
CALIBRATION
3.1 Monoxor II CO Calibration
Figure 3-1.
Calibration Kit
Setup
The following calibrates the MONOXOR II to a known concentration of carbon
monoxide.
Equipment Needed (Refer to Section “5.0 Replacement Parts” for Part
Nos.):
•
Calibration Kit
•
Carbon Monoxide Gas Cylinder, 500 ppm
•
Potentiometer adjustment tool
Procedure:
WARNING!
Perform this procedure in a well ventilated area. CO is toxic!
1. Assemble the calibration equipment by connecting the Carbon Monoxide Gas
Cylinder and the components of the Calibration Kit together as shown in Fig
3-1.
NOTE:
DO NOT attach the calibration setup to the instrument at this
time.
2. Zero the instrument as follows:
a. Ensure instrument will be sampling CO-free (fresh) air in the following
steps.
NOTE:
An indication that the instrument was not zeroed in fresh air
is when a large negative CO display appears when the instrument is
moved into another area.
b. Set front panel POWER switch to ON.
