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Single and Dual Input Analyzers for Low Level Conductivity
AX410, AX411, AX413, AX416, AX418, AX450, AX455 & AX456
8 SIMPLE FAULT FINDING
IM/AX4CO Issue 11
69
8.3 Checking the Temperature Input
Check the analyzer responds to a temperature input.
Disconnect the Pt100/Pt1000 leads and connect a suitable
resistance box directly to the analyzer inputs - see section 7.2,
page 61. Check the analyzer displays the correct values as set
on the resistance box - see Table 8.3.
Incorrect readings usually indicate an electrical calibration
problem. Re-calibrate the analyzer as detailed in Section 7.3.
Temperature
Input Resistance (
Ω
)
ºC
ºF
Pt100
Pt1000
0
32
100.00
1000.0
10
50
103.90
1039.0
20
68
107.79
1077.9
25
77
109.73
1097.3
30
86
111.67
1116.7
40
104
115.54
1155.4
50
122
119.40
1194.0
60
140
123.24
1232.4
70
158
127.07
1270.7
80
176
130.89
1308.9
90
194
134.70
1347.0
100
212
138.50
1385.0
130.5
267
150.00
1500.0
Table 8.3 Temperature Readings for Resistance Inputs