Manual Zero/Span Check With Zero/Span Valves Option; Table 7-5: Manual Zeroc - Teledyne 9110AH Instruction Manual

TELEDYNE Model 9110AH NO

7.2 Manual Zero/Span Check with Zero/Span Valves Option

The Zero/Span valve option can be operated from the front panel keyboard as described below.
The Zero/Span valves allow zero and span gas come in through ports on the rear panel of the
instrument. The Zero/Span valves can be set up to operate automatically on a periodic schedule.
See Section 6.2 to setup automatic zero/span feature.
Table 7-5: Manual Zero Check Procedure - Z/S Valves
Step Number
1.
2.
3.
4.
5.
6.
7.
Refer to Table 7-3 to enter expected NO and NO
Analyzer Operator Manual, 01620, Rev. F
X
Action Comment
Check "Before Check "Before Calibration" Section 7 before proceeding.
Calibration"
Press CALZ The analyzer enters the zero calibrate mode. This switches the
sample/cal and zero valve to allow zero gas to come in
through the zero gas inlet port in the rear panel.
Select LO or HI If AutoRange is enabled you will be prompted for which range
range to calibrate. Select the LO or HI range, then press ENTR.
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 M9110AH returns to sample mode. Immediately after
calibration, readings do not go into the DAS averages.
7-6
values.
x