Sensor Calibration; Monoxer Ii Co Calibration - Bacharach DIOXOR II Combined Service Manual

Single Gas Instrument Service Manual
3.0

SENSOR CALIBRATION

3.1 Monoxor II CO Calibration
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:
1. Assemble the calibration equipment by connecting the Carbon Monoxide Gas
2. Zero the instrument as follows:
Figure 3-1.
Calibration Kit
Setup
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Perform this procedure in a well ventilated area. CO is toxic!
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.
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.
Bacharach, Inc.
WARNING!
Instruction 0019-9166