Endress+Hauser Proline Promag 300 - Test Sequence a (PTC = 99 %)

Proof testing Proline Promag 300 HART
32 Endress+Hauser
regard to interrupting operation while maintaining the necessary safety integrity of the
installed safety instrumented systems.
The Heartbeat Technology developed by Endress+Hauser can be used to implement the
"Flexible testing" test strategy of field devices under NA106 .
Device verification (Heartbeat Verification) enables the documentation of the current device
diagnostic or the device status as proof of testing. This supports the documentation of proof
tests according to IEC 61511-1, Section 16.3.3, "Documentation of proof tests and
inspections". Device verification (Heartbeat Verification) is based on device-specific test
sequences that are performed automatically. The verification also enables the detection of
systematic errors in the sensor system (e.g. formation of buildup in the sensor).
7.1 Test sequence A (PTC = 99 %)
• Testing with a secondary standard (volume flow)
• Testing of current output 1
• Inspection and on-site visual check
Preparation
Byassing of safety function of process control system, to prevent accidental activation of the
safety function.
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Deactivate the locked SIL mode →  28.
7.1.1 Test sequence: Testing with a secondary standard (volume flow)
The measured values (3 to 5 measuring points) are checked with a secondary standard on an
installed device (mobile calibration rig or calibrated reference device) or on a factory
calibration rig following device removal.
The measured values of the secondary standard and the device under test (DUT) are compared
using one of the following methods:
Comparison by reading off the digital measured value
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Compare the digital measured value of the secondary standard against the measured value
display of the DUT at the logic subsystem (process control system or safety-related PLC).
Comparison of the measured value by measuring the current
Requirements for the measuring equipment:
• DC current measuring uncertainty ±0.2 %
• DC current resolution 10 µA
1. Measure the current at the DUT using an external, traceably-calibrated ammeter.
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.