Deltabar S
24 Endress+Hauser
3. Set the current output of the transmitter to HI alarm via a HART command or by means of the
onsite display and check whether the analog current signal reaches this value.
• e.g. simulate an alarm by means of the SIMULATION MODE and SIM. ERROR NO. parameters.
This test detects problems based on voltages that are not compliant with the standard, e.g. due to
too low a current loop supply voltage or increased cable resistance, and checks possible faults in
the transmitter electronics.
4. Set the current output of the transmitter to LO alarm via a HART command or by means of the
onsite display and check whether the analog current signal reaches this value.
• e.g. set the ALARM RESPONSE parameter to "Min. alarm".
• Simulate an alarm by means of the SIMULATION MODE and SIM. ERROR NO. parameters.
This test detects any problems in conjunction with quiescent currents.
5. Restore the complete operativeness of the current loop.
6. Disable safety PLC bypassing or restore normal operation in some other way.
7. Once the proof-test has been carried out, the results must be documented and stored in a suitable
manner.
Proof-test 2:
This test detects approx. 99% of the possible dangerous undetected device failures.
1. Perform steps 1 to 4 outlined under proof-test 1.
2. Compare the pressure measured value displayed to the pressure present and check the current
output.
During this test, suitable processes, measuring resources and references must be used.
• For the lower-range value (4 mA value) and the upper-range value (20 mA value), compare the
pressure present to the measured pressure.
• If the measured pressure deviates from the pressure present at the device, the reference
pressure present must be reassigned to the 4 mA value and the 20 mA value.
For the 4 mA value, Operating Instructions BA00274P/00/EN, parameter descriptions for
SET LRV (245) and GET LRV (309) for pressure measurement, SET LRV (013) for level
measurement (LEVEL SELECTION "Level Easy Pressure") and SET LRV (637) for flow
measurement.
For the 20 mA value, Operating Instructions BA00274P/00/EN, parameter descriptions for
SET URV (246) and GET URV (310) for pressure measurement, SET URV (012) for level
measurement (LEVEL SELECTION "Level Easy Pressure") and SET URV (638) for flow
measurement.
• Compare the pressure measured value displayed to the pressure present and check the current
output a second time. If there are any deviations, please contact Endress+Hauser Service.
3. Perform steps 5 to 7 outlined under proof-test 1.
Regarding step 2 of proof-test 2:
After this procedure, the current value is output correctly. The value displayed, e.g. on the onsite
display, and the digital value via HART can deviate from the pressure actually present. If the
display value and digital value are also to be corrected, please contact Endress+Hauser Service.
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