Input 1 Set Up Wiring; Table 5-4 Set Up Wiring Procedure For Thermocouple Inputs Using An Ice Bath; Figure 5-2 Wiring Connections For Thermocouple Inputs Using An Ice Bath - Honeywell UDC2500 Product Manual

Input Calibration
Type of Input
RTD (Resistance
Thermometer
Device)
Milliampere,
Millivolt, Volts, and
Radiamatic

5.4 Input 1 Set Up Wiring

Thermocouple Inputs Using an Ice Bath
Refer to Figure 5-2 and wire the controller according to the procedure given in Table
5-4..
Table 5-4 Set Up Wiring Procedure for Thermocouple Inputs
Step
1 Connect the copper leads to the calibrator.
2 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.
3
See Figure 5-2.
Millivolt Millivolt
Source Source
Copper Leads Copper Leads

Figure 5-2 Wiring Connections for Thermocouple Inputs Using an Ice Bath

140
•
A decade box, with at least ± 0.02 % accuracy, capable of providing
stepped resistance values over a minimum range of 0 to 1650 ohms
with a resolution of 0.001 ohm.
•
Three insulated copper leads of equal length for connecting the
decade box to the controller.
•
A calibrating device with at least ± 0.02 % accuracy for use as a
signal source.
•
Two insulated copper leads for connecting the calibrator to the
controller.
•
Place current source at zero before switching ON.
•
Do not switch current sources OFF/ON while connected to the
UDC2500 input.
Using an Ice Bath
+ +
_ _
Ice Bath Ice Bath
UDC2500 Universal Digital Controller Product Manual
Equipment Needed
Action
+ +
_ _
Thermocouple Thermocouple
Extension Wire Extension Wire
26 26
27 27
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