Calibration Steps
Use the following steps when calibrating an input.
Step
1
Find the minimum and maximum range values for your PV input range from Table 5-1.
2
Disconnect the field wiring and find out what equipment you will need to calibrate.
3
Wire the calibrating device to your controller according to the set up wiring instructions
for your particular input (Subsection 5.4 or 5.6).
Follow the calibration procedure given for Input #1 or Input #2 (Subsection 5.5 or 5.7).
4
5.2 Minimum and Maximum Range Values
Select the Range Values
Calibrate the controller for the minimum (0 %) and maximum (100 %) range values of
your particular input type. Two input controllers will need to have each input calibrated
separately.
Select the Voltage, Current or Resistance equivalents for 0 % and 100 % range values
from Table 5-1 and Table 5-2. Use these values when calibrating your controller.
Table 5-1 Voltage, Milliamp and Resistance Equivalents for Input 1 Range Values
Sensor Type
Thermocouples
(per ITS-90)
B
E
E (low)
J
J (med)
J (low)
K
K (med)
K (low)
NiMo-NiCo (NM90)
NM90 (low)
Nicrosil-Nisil (Nic)
Nic (low)
R
4/07
PV Input Range
°F
0 to 3300
–18 to 1816
–454 to 1832
–270 to 1000
–200 to 1100
–129 to 593
0 to 1600
–18 to 871
20 to 900
20 to 550
0 to 2400
–18 to 1816
–20 to 1200
–20 to 750
32 to 2500
32 to 1260
0 to 2372
–18 to 1300
0 to 1472
–18 to 800
0 to 3100
–18 to 1704
UDC2500 Universal Digital Controller Product Manual
Action
°C
–0.100 mV
–9.835 mV
–6.472 mV
–0.886 mV
–7 to 482
–0.334 mV
–7 to 288
–0.334 mV
–0.692 mV
–29 to 649
–1.114 mV
–29 to 399
–1.114 mV
0 to 1371
0.000 mV
0 to 682
0.000 mV
–0.461 mV
-0.461 mV
–0.090 mV
Input Calibration
Range Values
0 %
100 %
13.769 mV
76.373 mV
44.455 mV
50.060 mV
26.400 mV
15.650 mV
52.952 mV
26.978 mV
16.350 mV
71.773 mV
31.825 mV
47.513 mV
28.455 mV
20.281 mV
137