Emerson Rosemount 700XA Reference Manual page 189

Reference Manual
2-3-9000-744
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6.1.17 Low Carrier Pressure (1-4)
Input carrier pressure for the detector is below the preset limit.
Recommended actions
6.1.18 Analog Input (1-10) High Signal
Measured value for the indicated analog input is greater than the customer-defined full
scale range.
6.1.19 Analog Input (1-10) Low Signal
Measured value for the indicated analog input is lower than the customer-defined full
scale range.
6.1.20 Analog Output (1-10) High Signal
Measured value for the indicated analog output is greater than the customer-defined full
scale range.
6.1.21 Analog Output (1-10) Low Signal
Measured value for the analog output is lower than the customer-defined zero range.
6.1.22 Stream (1-20) Validation Failure
The most recent validation sequence for the indicated stream failed.
Recommended actions
Rosemount 700XA
If you observe flow in the rotameter, replace the sample flow switch.
1. Check that the carrier cylinder pressure is at least 10 psig (0.69 barg) above the
mechanical regulator set point.
2. If input carrier pressure is low, check the carrier cylinder pressure.
3. Replace the carrier gas cylinder if required.
1. Ensure that the validation gas cylinder isolation valves are open.
2. Ensure that the validation gas regulators are set properly.
3. If the validation gas regulator pressure is below the set point, replace the gas
bottle with a full one.
4. If the gas used for validation is the same as the gas that is used for calibration,
ensure that the cylinder gas composition value listed on the cylinder's tag or on
the certificate of analysis received from the supplier matches the value
displayed in Rosemount MON2020's Component Data table.
Troubleshooting
June 2022
189