5.21
TABLE 5.1 RESISTANCE THERMOMETER VALUES
Resistance in ohms across sensor
(blue and brown wires)
Temperature in degC
100.0 - 0
103.9 - 10
107.8 - 20
111.7 - 30
115.5 - 40
119.4 - 50
123.2 - 60
127.0 - 70
130.9 - 80
134.7 - 90
138.5 - 100
142.3 - 110
146.1 - 120
149.8 - 130
5.2.2 Power Supply Unit Test
Remove PSU from analyser. See Section 2.6.1, paras 1 to 3.
With PSU still connected to analyser measure the following voltages on TB-B (terminal block on
right hand side of PSU with analyser connections). Voltages are measured with respect to
TB-B-5.
Terminal Voltage
TB-B-9 +8V dc, ±0.2V
TB-B-10 ! 8V dc, ±0.2V
TB-B-4 +5.0V dc, ±0.2V
CAUTION
This test must be completed within two minutes otherwise power supply unit may
overheat.
If the voltages do not agree with those specified above unplug boards one at a time to identify
potentially faulty boards. Check by substitution.
If all voltages are low check the transformer. See Section 5.2.2.1.
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