Ametek HPC550Ex / HPC 552Ex Pressure Calibrator
This product has been retired.

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  • 25 mbar to 700 bar FS (0.35 to 10,000 psi)
  • ±0.025% of reading +0.01% F.S.
  • Fully temperature compensated
  • High accuracy thermometer, Pt100 sensor
  • Meets IECEx and EU Ex standards

The JOFRA HPC550Ex / HPC552Ex calibrators feature deadweight tester accuracy in a modern digital package. The HPC550/552Ex can be used in a very broad range of applications from simple tool type jobs to complex calibration jobs in custody transfer systems. Including potential hazardous areas in Oil, Gas and Chemical industries.

The HPC550/552Ex series has been designed to meet high accuracy pressure calibration applications and faciliate your tasks. HPC550/552Ex offers features such as user configurable information display, 15 different pressure units, transmitter supply, mA input, % error calculation, voltage measurement, serial communication, and external pressure module capability. The accuracy of the HPC550/552Ex calibrators is specified in % of reading to ensure an even better accuracy and wider applicable pressure range. The HPC is temperature compensated from 0 to 45ºC/32 to 113ºF for on-site operation. It is a truly superior pressure calibrator for laboratory and field use, bringing laboratory accuracy into the field.

The pressure calibrator of choice in potential explosive atmospheres. The intrinsically safe HPC550/552Ex calibrators complies with ATEX / IECEx certifications and are an extension of JOFRA´s well known pressure calibrator range.

HPC550/552Ex meet the needs of technicians who install, maintain, calibrate and troubleshoot equipment in petro-chemical plants, on oil platforms, in refineries, governmental bodies, commercial organizations and any location subject to the risk of potential explosion hazardous atmospheres.

Ex areas can be known by different names such as "Hazardous Locations", "Hazardous Areas" "Explosive Atmospheres", and the like and relate to areas where flammable liquids, vapours, gases or combustible dusts are likely to occur in quantities sufficient to cause a fire or explosion. Some common Ex locations are:

  • Automotive refueling stations or petrol stations
  • Oil refineries, rigs and processing plants
  • Chemical processing plants
  • Printing industries, paper and textiles
  • Hospital operating theatres
  • Aircraft refueling and hangars
  • Surface coating industries
  • Sewerage treatment plants
  • Gas pipelines and distribution centers
  • Woodworking areas
  • Sugar refineries


Ametek Pt100 Probe
Pt100 probe with 4-pol LEMO

Test Leads

Ametek Test Leads
Test Leads for HPC550Ex and HPC552Ex, 1 black and 1 red


Ametek RS232 Cable
RS232 Cable with Stereo Jack Connector: 2m/6ft


Ametek Shoulder Strap
Shoulder Strap with hooks


Ametek Soft Carrying Case
Large padded soft carrying case with shoulder strap


Please consider these optional accessories.

Ametek 122823 Cable
2 meter cable female banana to LEMO to connect ASM-A to ATC / ASC300 - RTD, Volt, mA
Ametek Fitting 1/8" BSP male to 1/4" NPT male
Fitting 1/8" BSP male to 1/4" NPT male
Ametek Fitting 1/8" BSP male to 1/4" BSP female
Fitting 1/8" BSP male to 1/4" BSP female
Ametek Bonded Seal 1/8" 127400 & 127401
Bonded Seal 1/8" for 127400 & 127401