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Teledyne API Model 100AH SO
2
Analyzer Instruction Manual, 02417, Rev. D
8.2 Manual Zero/Span Check or Calibration with
Zero/Span Valves Option
The Zero/Span valve option can be operated from the front panel keyboard. In the Zero/Span valve
option the zero and span gas comes into the valves through ports on the rear panel of the instrument.
Table 8-5: Manual Zero Calibration Procedure - Z/S Valves
Step Number Action Comment
1. Press CALZ The analyzer enters the zero calibrate mode. This switches
the zero valve to allow zero gas to come in through the zero
gas inlet port on the rear panel. If AutoRange is enabled,
then select LO or HI range and press ENTR.
2. Wait 10 min Wait for reading to stabilize at zero value.
3. Press ZERO If you change your mind after pressing ZERO, you can still
press EXIT here without zeroing the instrument.
4. Press ENTR Pressing ENTR actually changes the calculation equations,
forcing the reading to zero.
5. Press EXIT M100AH returns to sample mode. Immediately after
calibration, readings do not go into the DAS averages.
Table 8-6: Manual Span Calibration Procedure - Z/S Valves
Step Number Action Comment
1. Press CALS The M100AH enters the calibrate mode from sample mode.
This operates the sample/cal and zero/span valves to allow
span gas to come in through the cal gas inlet port or the rear
panel. If AutoRange is enabled, then select LO or HI range
and press ENTR.
2. Wait 10 min Wait for reading to stabilize at span value.
3. Press SPAN If you change your mind after pressing SPAN, you can still
press EXIT here without spanning the instrument.
4. Press ENTR Pressing ENTR actually changes the calculation equations.
5. Press EXIT M100AH returns to sampling. After calibration, data is not
added to the DAS averages during HOLDOFF period.
8-5