PCA
3 Manual
0024-9473 Rev 3
73
6.6.3. TA-Span Procedure
1. Set thermocouple simulator to 100 °C (212 °F), and then use the ▲▼
and ◄► buttons to enter an applied value that exactly equals the
setting of the simulator.
Alternatively:
Submerge probe tip into a container of boiling water
with a thermometer, wait several minutes, and then use the
▲▼ and
◄► buttons to enter an applied value that exactly equals the
thermometer reading.
NOTE:
The calibration range is from 90 to 110 °C (194 to
230 °F). An attempt to calibrate outside this range will
cause the message “Bad Calibration Wrong CAL Entry” to
appear in the following step.
2. Wait until the measured reading stabilizes, and then press
ENT
to
calibrate the TA-Span Measured value to that of the applied value; after
which the message “Good Calibration” should briefly appear followed by
the CALIBRATION LIST screen being re-displayed.
Figure 6-6. T-Air Span Procedure
6.7. CO
LOW
Sensor Calibration
NOTE:
The CO
LOW
sensor also measures H
2
for the purpose of
compensating the CO reading for the presence of H
2
in the gas
sample. This procedure first spans the CO
LOW
sensor and,
optionally, spans the H
2
part of the sensor to known gas levels.
The user has the option to perform a CO only calibration or a CO/H
2
calibration
using the PCA
®
3 soft keys.
6.7.1. Material Required
•
Calibration Kit
(P/N 0024-7059)
•
Gas Cylinder
(500 ppm CO in air, P/N 0024-0492)
•
Gas Cylinder
(1,000 ppm CO and 1,000 ppm H
2
in Nitrogen,
P/N 0024-0794)
Summary of Contents for PCA3
Page 23: ...PCA 3 Manual 0024 9473 Rev 3 23 Figure 3 2 Connecting the Probe to the Analyzer...
Page 64: ...PCA 3 Manual 64 0024 9473 Rev 3 Figure 5 23 Printer Alignment and Sample Printout...
Page 84: ...PCA 3 Manual 84 0024 9473 Rev 3 Figure 7 2 Inside View with Rear Case Removed...
Page 86: ...PCA 3 Manual 86 0024 9473 Rev 3 Figure 7 5 Wire Routing Connectors and Solder Connections...
Page 101: ...PCA 3 Manual 0024 9473 Rev 3 101...
Page 102: ...PCA 3 Manual 102 0024 9473 Rev 3...
Page 103: ...PCA 3 Manual 0024 9473 Rev 3 103...
