Yokogawa EXA ISC202 2-wire Conductivity Transmitter/Analyzer - Manual (Page 108)

IM 12D06A03-01E
3-16 Appendix
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QIS 12D06A03-71E
In this state, change the resistance value of the decade resistance box 1 as shown in Table 1.
The corresponding temperature indication must be within the range.
Table 1 Temperature Indication Check (PT1000)
Reference
Temperature
Resistance of
Resistance Box 1
Indication Range
25 °C 1097.3 : 25.0 ±0.3 °C
100 °C 1385.0 : 100.0 ±0.3 °C
Set the type of temperature sensor to 30k NTC.
x Set Service Code 10 to 0 by following the steps for setting Service Code 10 to 1.
In this state, change the resistance value of the decade resistance box 1 as shown in Table 2.
The corresponding temperature indication must be within the range.
Table 2 Temperature Indication Check (30k NTC)
Reference
Temperature
Resistance of
Resistance Box 1
Indication Range
25 °C 30 k: 25.0 ±0.3 °C
100 °C 2.069 k: 100.0 ±0.3 °C
3.4 Conductivity Indication Check
Connect the instruments as shown in Figure 1, and set them as follows.
Decade resistance box 1: OPEN
Decade resistance box 2: 100 Ω
If a sensor other than the reference sensor is used, zero and span calibrations are required.
Wind ten turns of wire on the ISC40 sensor.
Change the resistance value of the decade resistance box 2 as shown in Table 3. The
corresponding conductivity indication must be within the range.
Table 3 Conductivity Indication Check (Cell constant: 1.88/cm)
Reference
Conductivity
Resistance of
Resistance Box 2
Indication Range
1880 mS/cm 100 Ω 1880.0 ±9.4 mS/cm
188 mS/cm 1 k: 188.0 ±0.94 mS/cm
18.8 mS/cm 10 k: 18.80 ±0.094 mS/cm
Change the number of turns of wire on the ISC40 sensor to one.
Change the resistance value of the decade resistance box 2 as shown in Table 4. The
corresponding conductivity indication must be within the range.
Table 4 Conductivity Indication Check (Cell constant: 1.88/cm)
Reference
Conductivity
Resistance of
Resistance Box 2
Indication Range
6.27 mS/cm 300 Ω 6.27 ±0.04 mS/cm
1.567 mS/cm 1.2 k: 1.567 ±0.009 mS/cm
376 μS/cm 5 k: 376 ±3.7 μS/cm