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Getting Started Teledyne API - Model 200EH/EM Operation Manual
28
3.3.2. BASIC O
2
SENSOR CALIBRATION PROCEDURE
If your instrument has an O
2
sensor option installed that should be calibrated as well.
3.3.2.1. O
2
Calibration Setup
The pneumatic connections for calibrating are as follows:
Calibrated N
2
at HIGH Span
Concentration
Calibrated O
2
at 20.8% Span
Concentration
Source of
SAMPLE GAS
Removed during
calibration
MODEL
200EH/EM
SAMPLE
EXHAUST
PUMP
VENT
3-way
Valve
Manual
Control Valve
VENT
here if input
is pressurized
Figure 3-14: O
2
Sensor Calibration Set Up
O
2
SENSOR ZERO GAS: Teledyne Instruments’ recommends using pure N
2
when calibration the zero point of
your O
2
sensor option.
O
2
SENSOR SPAN GAS: Teledyne Instruments’ recommends using 21% O
2
in N
2
when calibration the span
point of your O
2
sensor option.
3.3.2.2. O2 Calibration Method
STEP 1 – Set O
2
span gas concentration :
Set the expected O
2
span gas concentration.
This should be equal to the percent concentration of the O
2
span gas of the selected reporting range (default
factory setting = 20.8%; the approximate O
2
content of ambient air).
04521C (DCN5731)