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HME

Main features & Overview

Overview

The HME series of Gefran, are pressure transmitters for using in High temperature environment and specifically designed for melt pressure measurement and available only to be used in large-scale fixed installations or in large-scale stationary industrial tools, typically extruders, or for laboratory B2B equipments for R&D purposes according to the European Directive 2011/65/EU (see informative note RoHS II).

The HME series of Gefran are pressure transmitters with HART communication protocol for using in high temperature environment.

The main characteristic of this series is the capability to read temperature of the media up to 400°C.

The constructive principle is based on the hydraulic trasmission of the pressure.

The fluid-filled system assures the temperature stability.

The physical measure is transformed in a electrical measure by means of strain-gauge technology.

Description

  • Pressure ranges from: 0-17 to 0-2000 bar / 0-250 to 0-30000 psi
  • Accuracy: < ±0.25% FS (H); < ±0.5% FS (M)
  • Fluid-filled system for temperature stability
  • Mercury filling volume: HME0 (30mm³); HME1, HME2, HME3 (40mm³)
  • 1/2-20UNF, M18x1.5 standard threads; other types available on request
  • Autozero function on board / external option
  • Standard diaphragm is 15-5 PH stainless steel with GTP+ coating
  • 17-7 PH corrugated diaphragm with GTP+ coating for ranges below 100 bar-1500 psi

Further versions available on request.

Downloads

Gefran product range brochure
Melt pressure sensors
Flyer Melt for Polymers
HME datasheet
Product user manual
H pressure transmitter description file
H pressure transmitter description files for HH475
RoHS informative note

Certifications

Hart Certifications - Certificate of Registration HCF Verified
GTP+ FDA Certificate
EU Conformity declaration_HME FS over 500bar
EU Conformity declaration_HME FS min 500bar PL d
EU Conformity declaration_HME FS min 500bar SIL 2
EU Conformity declaration_HME FS min 500bar
EU Conformity declaration_HME FS over 500bar PL d
EU Conformity declaration_HME FS over 500bar SIL 2
UK Conformity declaration_HME FS min 500bar
UK Conformity declaration_HME FS over 500bar
UK Conformity declaration_HME FS min 500bar SIL 2
UK Conformity declaration_HME FS over 500bar SIL 2
UK Conformity declaration_HME FS min 500bar PL d