Sensor Factory Data, Sensor Board User Data, And Sensor Eeprom Write Errors; Sensor Adc Error; Sensor Rtd Out Of Range - Emerson Rosemount MCL-220 Manual

Procedure
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9.3.8 Sensor Factory Data, Sensor Board User Data, and
Sensor EEPROM Write errors
These messages mean factory eeprom data or user eeprom data on the sensor board is
corrupted or the CPU on the sensor board is bad.
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9.3.9

Sensor ADC error

There is a bad component on the sensor board. The sensor board must be replaced.
9.3.10

Sensor RTD Out of Range

The sensor contains a Pt 100 RTD (resistance temperature device) for measuring
temperature. If the measured resistance is outside the expected range, the transmitter
displays the out of range error message.
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Instruction Manual
Confirm that the ribbon cable connecting sensor 1 (chlorine) board to the main
board is plugged into the sensor 1 connector on the main board.
Confirm that the ribbon cable is seated at both ends.
Cycle power off and then on.
Replace the sensor board.
Check wiring connections.
Disconnect the sensor from the cable and use an ohmeter to check the resistance
across the RTD.
See Figure 9-1. The resistance should be about 110 Ω. If there is an open or short
circuit, the sensor has failed and should be replaced.
If the resistance is acceptable, attach the sensor to the Variopol cable and
disconnect the red and white RTD IN and RTD RTN leads at the transmitter.
Connect an ohmeter across the leads and measure the resistance.
If the circuit is open or shorted, the cable must be replaced.
If there is no open or short, check the transmitter.
See Section 9.8.2.
Troubleshooting
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