
Instruction 24-94485-4
Calibration
The calibration range is from –6 to –2 inwc (–15 to –5 mb). An attempt
to calibrate outside this range will cause the message “Applied Value
High” (or Low) to appear at the bottom of the screen.
7. Wait until the Measured reading stabilizes, and then press ENT to cali-
brate the pressure sensor’s Measured value to that of the Applied value;
after which the message “Good Calibration” should briefly appear fol-
lowed by the CALIBRATION LIST screen being re-displayed.
8. Remove calibration equipment.
5.4 T-Stack Calibration
This procedure first zeros and then spans the stack-temperature channel
to known temperature values.
The use of an electronic thermocouple simulator is the preferred method of
producing the desired calibration temperatures. Alternatively, containers
of ice water and boiling water can be used.
Material Required:
Thermocouple Simulator (K-type)
Range: 0 to 600 °F
Accuracy: ±0.5 °F
(Alternatively) Ice-Water, Boiling Water, Thermometer
TS-Zero Procedure:
1. Set thermocouple simulator to room tempera-
ture and plug its output into the T-STACK
connector located at the bottom of the
analyzer.
Alternatively: Plug the probe’s thermocouple
into the T-STACK connector located at the
bottom of the analyzer. DO NOT attach the
probe’s gas hose to the analyzer’s GAS
port; otherwise water will be drawn into
the analyzer!
2. If not already done, turn ON the analyzer and display the
CALIBRATION LIST screen per Section 5.2.
3. Use the buttons to highlight T-Stack, and then press ENT to dis-
play the CALIBRATE TS-ZERO screen.
“Measured” is the current temperature reading, while “Applied” is a
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CALIBRATION MENU
Pressure
T-Stack
T-Air
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SO2
NO
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