Calibrating and Function-Checking Pressure Measurement Systems

The selected Pressure Transmitter (0 – 25barg range) must be of a similar specification and complexity of construction to that of the examples show. The transmitter must allow the candidate to make a 20% range change for the purpose of the test.

The Examiner will provide the candidate with the supplied Instrument Test Record (ITR01) that records the new specification. This includes the requirement to upload a new Tag No and rerange the transmitter from 0 – 25barg to 0 – 20barg.

The Examiner should make available a range of Hand Held Communicators (Hart, Smart etc.) from which the Candidate will be required to select the appropriate one for the re-configuration and recalibration of the pressure transmitter

The Examiner should make available to the Candidate a copy of a selection of vendor installation and commissioning manuals from which the candidate will need to select the appropriate one for the test.

Technical Assessment – To re-range and assign a new “Tag No” to an electronic pressure transmitter using an appropriate hand held communicator in line with the equipment specification. Work MUST include a full function check of the transmitter to the new specification using a suitable test medium with the results recorded on the supplied Instrument Test Record.

Objective - To ensure a candidate has the skills, knowledge and ability to reconfigure, calibrate and function check an electronic pressure transmitter. The candidate will have to demonstrate they can work safely throughout the work scope and complete the appropriate documentation to the required standard.

Technical Assessment Requirements

Range of screwdrivers (flat, crosshead and Phillips)
Range of spanners (open ended, combined and ring)
Range of Allen keys (Metric & Imperial)
Range of test ancillary equipment (flanges, joints, compression fittings etc.)
Hammer
Strap Wrench
Suitable Variable Power Supply AC/DC
Hand Held Communicator (Hart, Smart or equivalent)
Digital Volt Meter (DVM) & Test Leads
Suitable pressure supply and calibrated test gauge
Pressure Transmitter 0 – 25 barg range (in operational condition)
Selection of Pressure Transmitter Vendor Manuals (Installation and Commissioning)
Personal Protective Equipment
Examiner instructions
Model Answer Sheet
Candidate instructions
Instrument Test Record (ITR01)
Candidate Question Paper
Examiner Results Report

The candidate is expected to complete the test whilst being observed using correct the correct tools, equipment, service supplies and established techniques, to achieve the specification. The activity must be completed using safe working practices to achieve a „PASS‟. Where the candidate does not achieve the set criteria this is recorded as „REFERRED‟ and a brief note recorded on the criteria not met in the test activity.

The candidate must record a PASS in all practical test sections and score a minimum of 80% in the multiple choice section.