Allen-Bradley 825-PR12D Manual page 9

Step 3. After accepting the relay settings, verify the correct RTD temperature
measurement using one of the following methods.
➢
➢
The relay will indicate the temperatures of each connected, healthy
RTD. If the relay reports that an RTD is open or shorted, or if the
temperature reading is wrong, verify the wiring at the 825-PR12D.
Also verify that the RTD type connected to that input matches the
RTD type setting.
Table 2 RTD Resistance Versus Temperature (Sheet 1 of 2)
Temp (°C) 100 Platinum
–50.00
–40.00
–30.00
–20.00
–10.00
0.00
10.00
20.00
30.00
40.00
50.00
60.00
70.00
80.00
90.00
100.00
110.00
120.00
130.00
140.00
150.00
160.00
Date Code 20080722
Relay front-panel menus:
Personal computer connected to the relay front serial port,
using a terminal emulation software package and the
METER T command.
120 Nickel
80.31 86.17
84.27 92.76
88.22 99.41
92.16 106.15
96.09 113.00
100.00 120.00
103.90 127.17
107.79 134.52
111.67 142.06
115.54 149.79
119.39 157.74
123.34 165.90
127.07 174.25
130.89 182.84
134.70 191.64
138.50 200.64
142.29 209.85
146.06 219.29
149.82 228.96
153.58 238.85
157.32 248.95
161.04 259.30
825-P Motor Relay Application
Meter > Thermal > RTD Data
100 Nickel
74.30
79.10
84.20
89.30
94.60
100.00
105.60
111.20
117.10
123.00
129.10
135.30
141.70
148.30
154.90
161.80
168.80
176.00
183.30
190.90
198.70
206.60
825-PR12D RTD Scanner
9
.
10 Copper
7.10
7.49
7.88
8.26
8.65
9.04
9.42
9.81
10.19
10.58
10.97
11.35
11.74
12.12
12.51
12.90
13.28
13.67
14.06
14.44
14.83
15.22