Bacharach PCA 2 24-9448 - Manual (Page 72)

Instruction 24-9448 5-6
Calibration
5.5 T-Air Calibration
Ths procedure frst zeros and then spans the ambent-temperature chan-
nel to known temperature values.
The use of an electronc thermocouple smulator s the preferred method of
producng the desred calbraton temperatures. Alternatvely, contaners
of ce water and bolng water can be used.
Material Required:
Thermocouple Smulator (K-type)
Range: 0 to 600 °F
Accuracy: ±0.5 °F
(Alternatvely) Ice-Water, Bolng Water, Thermometer
TA-Zero Procedure:
1. Set thermocouple smulator to room temperature and plug ts output
nto the T-AIR connector located at the bottom of the analyzer.
Alternatively: Plug the probe’s thermocouple nto 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 dsplay the CALIBRATION LIST screen
per Secton 5.2.
3. Use the buttons to hghlght T-Ar, and
then press ENT to dsplay the CALIBRATE
TA-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 smulator to 32 °F (0 °C),
and then use the and buttons to enter
an Appled value that exactly equals the set-
tng of the smulator.
Alternatively: Submerge probe tp nto an ce-
water bath wth a thermometer, wat several
mnutes, and then use the and but-
tons to enter an Appled value that exactly
equals the thermometer readng.
•
-
-
•
CALIBRATION LIST
Pressure
T-Stack
T-Air
CO-LO
SO
2
NO
NO
2
(more)
MENU
F1 F2 F3
CALIBRATE TA-ZERO
Measured 33 °F
Applied 032 °F
06/27/06 11:55:30 PM
PRINT
F1 F2 F3