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Instruction 24-94485-4
Calibration
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 temperature 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 con-
nector 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 display the CALIBRATE
TS-ZERO screen.
“Measured” is the current temperature read-
ing, while “Applied” is a known temperature
that will be applied for calibration purposes.
4. Set thermocouple simulator to 32 °F (0 °C),
and then use the and buttons to enter
an Applied value that exactly equals the set-
ting of the simulator.
Alternatively: Submerge probe tip into an ice-water bath with a ther-
mometer, wait several minutes, and then use the and buttons to
enter an Applied value that exactly equals the thermometer reading.
The calibration range is from 32 to 41 °F (0 to 5 °C). An attempt to
calibrate outside this range will cause the message “Bad Calibration
Wrong CAL Entry” to appear in the following step.
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CALIBRATION LIST
Pressure
T-Stack
T-Air
CO-LO
SO2
NO
NO2
(more)
MENU
F1 F2 F3