a) Select Configure → Manual Setup → Device Setup → Security.
b) Click Write Protect and follow the instructions.
3. Using Loop Test, enter current value (mA) representing high alarm current. Verify
that analog output current is correct using the reference meter.
a) Select Configure → Manual Setup → Device Setup → Analog Output.
b) Click Loop Test and select Other.
c) Enter current value representing high alarm current.
d) Verify that analog output current is correct.
e) Click Abort to end loop test.
4. Using Loop Test, enter current value (mA) representing low alarm current. Verify
that analog output current is correct using the reference meter.
This step tests for possible quiescent current related failures.
a) Select Configure → Manual Setup → Device Setup → Analog Output.
b) Click Loop Test and select Other.
c) Enter current value representing low alarm current.
d) Verify that analog output current is correct.
e) Click Abort to end loop test.
5. Enable write protection.
a) Select Configure → Manual Setup → Device Setup → Security.
b) Click Write Protect and follow the instructions.
6. Inspect the transmitter for any leaks, visible damage, or contamination.
7. Perform a one-point level measurement verification of the device. Verify the current
level measurement with an independent measurement such as the BPCS level-
sensor or a manual reading.
This step verifies that the analog output is correct in the operating range and that
the Primary Variable is properly configured.
Note that the applied level has to be between Upper and Lower Range values,
otherwise the device enters alarm mode. If level is outside Maximum Measuring
Range, the level reading accuracy may be reduced. For best performance, use the
4-20 mA range points as calibration points. See Figure 8-3.
8. Remove the bypass and otherwise restore normal operation.
For troubleshooting the transmitter, see Service and troubleshooting.
Reference Manual Safety Instrumented Systems (4-20 mA only)
00809-0100-4530 April 2019
Reference Manual 255
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