Preliminary Information; Table 5-2 Equipment Needed; Figure 5-1 Input 1 Wiring Terminals - Honeywell UDC2500 Product Manual

5.3 Preliminary Information

Disconnect the Field Wiring
Tag and disconnect any field wiring connected to the input terminals on the rear of the
controller.
Equipment Needed
Table 5-2 lists the equipment you will need to calibrate the specific types of inputs that
are listed in the table. You will need a screwdriver to connect these devices to your
controller.
Type of Input
Thermocouple
Inputs (Ice Bath)
Thermocouple
Inputs (T/C Source)
RTD (Resistance
Thermometer
Device)
Milliampere,
Millivolt, Volts, and
Radiamatic
R
Input 1
+
Connections _

Figure 5-1 Input 1 Wiring Terminals

Table 5-2 Equipment Needed

•
A calibrating device with at least ± 0.02 % accuracy for use as a
signal source such as a millivolt source.
•
Thermocouple extension wire that corresponds with the type of
thermocouple that will be used with the controller input.
•
Two insulated copper leads for connecting the thermocouple
extension wire from the ice baths to the mV source.
•
Two containers of crushed ice.
•
A calibrating device with at least ± 0.02 % accuracy for use as a
signal source such as a millivolt source.
•
Thermocouple extension wire that corresponds with the type of
thermocouple that will be used with controller input.
•
A decade box, with at least ± 0.02 % accuracy, capable of providing
stepped resistance values over a minimum range of 0 to 1400 ohms
with a resolution of 0.1 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.
UDC2500 Universal Digital Limit ControllerProduct Manual
25 R
26 +
27 –
Input 1
Equipment Needed
Input Calibration
61