Specifications

PCA
®
3
75
5.6 T-Air Calibration
This procedure fi rst zeros and then spans the ambient-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
TA-Zero Procedure:
1. Set thermocouple simulator to room
temperature and plug its output into
the T-AIR connector located at the
bottom of the analyzer.
Alternatively: Plug the probe’s ther-
mocouple into the T-AIR 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-Air, and then press ENT to display
the CALIBRATE TA-ZERO screen.
“Measured” is the current
temperature reading, while “Applied”
is a known temperature that will be
applied for calibration purposes.