Honeywell Work Light DR4300 User Manual
DR4300 Circular Chart Recorder
148
DR4300 Circular Chart Recorder Product Manual
12/03
5.4.3 Thermocouple Inputs Using an Ice Bath or Ice Point Reference
Table 5-6 Set Up Wiring Procedure for Thermocouple Inputs Using an Ice Bath
Step Action
1
Connect the copper leads to the calibration source (see Figure 5-3).
2
Connect a length of thermocouple extension wire to the end of each copper lead and insert the
junction points into the ice bath.
junction points into the ice bath.
3
Connect the other end of the thermocouple extension wires to the TB2 terminals on the printed
circuit assembly for the input channel being calibrated.
circuit assembly for the input channel being calibrated.
Main PCA
Pen 2
Pen 2
Main PCA
Pen 1
Pen 1
7
TB2
TB1
7
TB2
TB1
TB2
+
R
–
-
+
mV source
Copper
wires
Thermocouple
extension wires
Containers of
crushed ice
24092
Figure 5-3 Calibration Set Up Diagram for Thermocouple Inputs Using an Ice Bath