Honeywell DR4300 manual Thermocouple Inputs Using an Ice Bath or Ice Point Reference

DR4300 Circular Chart Recorder

5.4.3 Thermocouple Inputs Using an Ice Bath or Ice Point Reference

Refer to Figure 5-3and wire the recorder according to the procedure given in Table 5-6.

Table 5-6 Set Up Wiring Procedure for Thermocouple Inputs Using an Ice Bath

Step Action

1Connect the copper leads to the calibration source (see Figure 5-3).

2Connect a length of thermocouple extension wire to the end of each copper lead and insert the junction points into the ice bath.

3Connect the other end of the thermocouple extension wires to the TB2 terminals on the printed circuit assembly for the input channel being calibrated.

Main PCA Pen 2

Main PCA Pen 1

7

TB1

TB2

7

TB1

TB2

	TB2	24092
	+
	–
	R
		mV source
		-
		+
Thermocouple	Containers of	Copper
extension wires	crushed ice	wires

Figure 5-3 Calibration Set Up Diagram for Thermocouple Inputs Using an Ice Bath

148 DR4300 Circular Chart Recorder Product Manual 12/03