Manual Zero/Span Check Or Calibration With Zero/Span Valves Option; Table 7-5: Manual Zero; Table 7-6: Manual Span - Teledyne 6400A Instruction Manual

TAI Model 6400A SO
7.2 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 come into the valves through ports on the rear panel of the instrument.
Table 7-5: Manual Zero Calibration Procedure - Z/S Valves
Step Number
1.
2.
3.
4.
5.
Table 7-6: Manual Span Calibration Procedure - Z/S Valves
Step Number
1.
2.
3.
4.
5.
Analyzer Operator Manual, 02164, Rev. G
2
Action Comment
Press CALZ The analyzer enters the zero calibrate mode. This switches the
sample/cal and zero/span valves to allow zero gas to come in
through the zero gas inlet port or the rear panel.
Wait 10 min Wait for reading to stabilize at zero value
Press ZERO If you change your mind after pressing ZERO, you can still
press EXIT here without zeroing the instrument.
Press ENTR Pressing ENTR actually changes the calculation equations,
forcing the reading to zero.
Press EXIT The 6400A returns to sample mode. Immediately after
calibration, readings do not go into the DAS averages.
Action Comment
Press CALS The 6400A 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.
Wait 10 min Wait for reading to stabilize at span value.
Press SPAN If you change your mind after pressing SPAN, you can still
press EXIT here without spanning the instrument.
Press ENTR Pressing ENTR actually changes the calculation equations.
Press EXIT The 6400A returns to sampling. Immediately after calibration,
data is not added to the DAS averages during HOLDOFF
period.
7-6