Micropilot FMR60/62/67
22 Endress+Hauser
Test sequence C
Preparation
1. Navigate to: Setup → Advanced setup → Deactivate SIL/WHG = Reset write protection and
enter the relevant locking code (WHG: 7450; SIL: 7452; SIL and WHG: 7454).
The SIL mode is deactivated.
2. Connect suitable measuring device (recommended accuracy better than ±0.1 mA) to the
current output.
3. Determine the safety setting (level limit or range monitoring).
Procedure for level limit monitoring
1. Navigate to: Expert → Sensor → Sensor diagnostics> Start self check = Yes
Device self-check is performed.
2. Navigate to: Expert → Sensor → Sensor diagnostics > Result self check = Ok
This part of the test has been passed only when "OK" is displayed.
3. Navigate to: Diagnostics → Simulation > Assign measurement variable = Level and enter the
value in the Process variable value parameter.
A level directly below (MAX monitoring) or directly above (MIN monitoring) the level limit
to be monitored is simulated.
4. Read the output current, record it and assess for accuracy.
5. Simulate a level directly above (MAX monitoring) or directly below (MIN monitoring) the level
limit to be monitored.
6. Read the output current, record it and assess for accuracy.
The test is to be considered successful if the current in step 3 does not result in activation
of the safety function but the current in step 5 does.
When selecting the "Expert" menu group, a prompt for the access code appears on the display. If
an access code has been defined under "Setup → Advanced setup → Enter access code", this 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. Navigate to: Expert → Sensor → Sensor diagnostics > Start self check = Yes
Device self-check is performed.
2. Navigate to: Expert → Sensor → Sensor diagnostics > Result self check = Ok
This part of the test has been passed only when "OK" is displayed.
3. Simulate five levels within the range to be monitored. Procedure, → Limit value monitoring,
step 3.
4. 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.
• When selecting the "Expert" menu group, a prompt for the access code appears on the display.
If an access code has been defined under "Setup → Advanced setup → Enter access code", this
must be entered here. If no access code was defined, the prompt can be acknowledged by
pressing the "E" key.
• The proof-test is to be considered to have failed if the expected current value deviates for a
specific level by > ±2 %. For troubleshooting, refer to the Operating Instructions (→ 7).
This test identifies 68 % of dangerous, undetected failures (proof test coverage, PTC = 0.68).
A number of sensor (antenna) faults and faults in the sensor electronics are not detected.
L
CAUTION
After test sequence C has been performed
‣
SIL mode must be reactivated (→ 12).
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