Watlow CLS200 - Manual (Page 199)

CLS200 Series User’s Guide Chapter 9:Troubleshooting and Reconfiguring
Doc.# 0600-3050-2000 Watlow Anafaze 183
CLS204 and CLS208 RTDs and Thermistors
For each RTD or thermistor input on a CLS204 or CLS208
controller, you must install three resistors: RA, RB, and
RC. The resistance must be correct for the expected input
range. RA and RB are a matched pair of resistors. Install
them in the resistor pack (RP) locations as shown in the il-
lustration below.
Table 9.10 Resistor Values for CLS204/208
RTD and Thermistor Inputs
Resistor tolerances: RA/RB matched to 0.02% (2 ppm/˚C)
and absolute tolerance is 0.1% (10 ppm/˚C) RC accurate to
0.05%.
Table 9.11 Resistor Locations for CLS204/208
RTD and Thermistor Inputs
Resistor Values
Input RA/RB RC
RTD1 10.0 k Ω 80 Ω
RTD2 25.0 k Ω 100 Ω
Resistor Locations
Loop RA/RB RC
1 RP1 R57
2 RP2 R55
3 RP3 R53
4 RP4 R51
5 RP5 R49
6 RP6 R47
7 RP7 R45
8 RP8 R43
RP#
RA RB