Micropilot FMR62 Proof testing
Endress+Hauser 25
3. At any level within the measuring range, determine the actual measured value
displayed by the device or the actual output current and compare it against the target
value specified by the current level.
This part of the test is deemed successful if the values are within the required
level of accuracy.
4. Simulate a level directly below (MAX monitoring) or directly above (MIN monitoring)
the point level to be monitored. For this, in the operating menu "Diagnostics →
Simulation → Assign measurement variable" select "Level" and enter the value in the
"Diagnostics → Simulation → Process variable value" parameter.
5. Read the output current, record it and assess for accuracy.
6. Simulate a level directly above (MAX monitoring) or directly below (MIN monitoring)
the point level to be monitored.
7. Read the output current, record it and assess for accuracy.
The test is to be considered successful if the current in step 5 does not result in activation
of the safety function but the current in step 7 does.
If the "Expert" menu group is selected, a prompt for the access code appears on the
display. If an access code was defined under "Setup → Advanced setup → Define access
code" this code must be entered here. If no access code was defined, the prompt can be
acknowledged by pressing the "E" key.
Procedure for range monitoring
1. Perform device self-check. For this, in the operating menu "Expert → Sensor → Sensor
diagnostics → Start self check" select "Yes".
2. After performing the test, read the result in the "Expert→ Sensor → Sensor
diagnostics → Result self check" parameter.
This part of the test has been passed only when "OK" is displayed here.
3. At any level within the measuring range, determine the actual measured value
displayed by the device or the actual output current and compare it against the target
value specified by the current level.
This part of the test is deemed successful if the values are within the required
level of accuracy.
4. Simulate five levels within the range to be monitored. Procedure, → Point level
monitoring, step 4.
5. Read the output current at each level value, record it and assess for accuracy.
The test is to be considered successful if the current values in step 3 are within the
required level of accuracy.
If the "Expert" menu group is selected, a prompt for the access code appears on the
display. If an access code was defined under "Setup → Advanced setup → Define access
code" this code must be entered here. If no access code was defined, the prompt can be
acknowledged by pressing the "E" key.
NOTICE
The device has failed the proof test if the current value at a specific level deviates by
> ± 2% from the expected value.
88% of dangerous, undetected failures are detected using this test (proof test coverage
(PTC) = 0.88).
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For troubleshooting, refer to the Operating Instructions.
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