Honeywell UDC 3300 manual Input #1, #2, or #3 Set Up Wiring, Thermocouple inputs using an ice bath

7.4 Input #1, #2, or #3 Set Up Wiring

Thermocouple inputs using an ice bath

Referring to Figure 7-2, wire the controller according to the procedure given in Table 7-3.

Table 7-3 Set Up Wiring Procedure for Thermocouple Inputs Using an

Ice Bath

Step

1

2

3

4

Action

Connect the copper leads to the calibrator.

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

Connect the thermocouple extension wires to the terminals for Input #1 or Input #2. See Figure 7-2.

Connect a cold junction resistor to terminals 25 and 27 for Input #1 or terminals 22 and 24 for Input #2. See Figure 7-2.

Figure 7-2 Wiring Connections for Thermocouple Inputs

Using an Ice Bath

Input 2

Input 1

T/C Extension Wire

		10	1
	L1	11	2
	L2/N	12	3
+	22	13	4
	23	14	5
–
	24	15	6
+	25	16	7
	26	17	8
–
	27		9

C/J Resistor

Ice Bath

+Millivolt

–Source

Copper Leads

24174

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