The Ametek Jofra PK II is a pneumatic deadweight tester (piston gauge) providing a primary traceable pressure standard for the calibration of pressure gauges, transmitters and pressure instruments. Using precision piston-cylinder technology with compressed air or nitrogen, the PK II generates stable, highly accurate reference pressures traceable to national measurement standards. Available from Hinco Instruments in Perth, Western Australia.
The Ametek Jofra PK II Pneumatic Deadweight Tester is a primary pressure standard used for the highest-accuracy calibration of pressure gauges, pressure transmitters, digital pressure indicators and other pressure measuring instruments. Where handheld pressure calibrators provide a secondary pressure reference, a deadweight tester generates a stable, calculable reference pressure based on the fundamental relationship between force and area — providing primary-standard accuracy traceable directly to national measurement standards.
The PK II uses a precision-lapped piston and cylinder assembly with calibrated weights to generate known reference pressures using compressed air or dry nitrogen as the working medium. Pneumatic deadweight testers of this type are the reference instrument of choice in NATA-accredited calibration laboratories and instrument workshops performing primary-standard pressure calibration, as the generated pressure is defined by physics rather than derived from a reference transducer. This eliminates the drift and calibration uncertainty associated with electronic reference instruments.
The PK II is suited to calibration of pressure gauges and transmitters across its operating pressure range, providing the stable, pulsation-free reference pressures needed for accurate as-found and as-left calibration records. It is typically used as the laboratory reference against which field pressure calibrators and working gauges are themselves calibrated, establishing the calibration hierarchy for a site or calibration laboratory.
Hinco Instruments is an authorised Ametek Jofra distributor supplying the PK II Pneumatic Deadweight Tester to customers across Perth, Western Australia and nationally. The PK II is used in NATA-accredited calibration laboratories, instrument workshops, oil and gas facilities, power generation and any organisation maintaining a primary pressure calibration standard.
Precision-lapped piston and cylinder assembly with calibrated weights
Accuracy
Primary traceable pressure standard; contact Hinco for range-specific accuracy
Traceability
Traceable to national measurement standards (NATA-compatible)
Pressure Generation
Stable, pulsation-free reference pressure via mass-on-piston principle
Application
Primary standard for calibrating pressure gauges, transmitters and field calibrators
Calibration Hierarchy
Used as laboratory reference against which secondary standards are calibrated
Enclosure
Robust instrument-grade housing for laboratory and workshop use
Certifications
Suitable for NATA-accredited calibration laboratory use
Applications
The Ametek Jofra PK II Pneumatic Deadweight Tester is a primary pressure standard for the most demanding pressure calibration and laboratory reference applications:
Primary-standard calibration of pressure gauges and digital pressure indicators
Calibration of pressure transmitters requiring traceable primary reference
NATA-accredited calibration laboratory primary pressure standard
Calibration of handheld pressure calibrators (HPC40, HPC50) and digital test gauges
Establishing and maintaining site pressure calibration hierarchy
Pressure instrument acceptance testing against a traceable primary standard
Oil and gas and power generation instrument workshop pressure reference
ISO 17025 accreditation pressure measurement traceability
