Endress+Hauser Proline Promag 300 - Test Sequence D (PTC = 36 %)

Proof testing Proline Promag 300 HART
36 Endress+Hauser
2. Measure the current of the DUT at the logic subsystem (process control system or
safety-related PLC).
Evaluation of results: Testing with a secondary standard (volume flow)
The amount of deviation between the measured flow rate and the set point must not exceed
the measured error specified for the safety function.
For information on the required measured error for the device, see the "Performance
characteristics" section of the Operating Instructions
‣
Follow the information in the section on "Restrictions for use in safety-related applications,
information on measured errors" →  17.
7.2.2 Test sequence: Inspection and on-site visual check
At the transmitter, check the correct sealing function of all the electronics compartment cover
seals and cable entries.
7.2.3 Connecting the test
NOTICE
At least 98 % of dangerous, undetected failures can be detected using the test sequences
described (PTC = 0.98). The influence of systematic errors on the safety function is not
fully covered by the test. Systematic errors can be caused, for example, by medium
properties, operating conditions or buildup.
‣
If one of the test criteria from the test sequences described above is not fulfilled, the device
may no longer be used as part of a protective system.
‣
Take measures to reduce systematic errors. For detailed information on the orientation,
medium properties and operating conditions, see the "Operating Instructions" →  10
7.3 Test sequence D (PTC = 36 %)
• Device restart
• Testing of current output 1
• Heartbeat verification
• Inspection and on-site visual check
Detection of additional systematic errors with Heartbeat Verification: influence of the process
on the device (e.g. formation of buildup in the sensor).
Preparation
Byassing of safety function of process control system, to prevent accidental activation of the
safety function.
‣
Deactivate the locked SIL mode →  28.
7.3.1 Test sequence: Device restart
The device restart resets every parameter whose data are in the volatile memory (RAM) to the
factory setting (e.g. measured value data). The device configuration remains unchanged.