Main features
- Pressure ranges from: 0-17 to 0-1000bar/0-250 to 15000 psi
- Extensimetric measurement principle
- Accuracy: < ±0.25% FS (H); < ±0.5% FS (M)
Available resources
Brochure
– Melt pressure sensors
– Gefran product range brochure
Device Description Files
– H pressure transmitter description file
– H pressure transmitter description files for HH475
Catalogue
– 4.0 plastic application catalogue
Informativa RoHS
– RoHS informative note
Flyer
– Flyer Melt for Polymers
User Manual
– HFM-HWF User Manual
Certifications
– GTP+ FDA Certificate
– EU Conformity declaration_HMF FS min 500bar PL d
– EU Conformity declaration_HMF FS min 500bar SIL 2
– EU Conformity declaration_HMF FS over 500bar PL d
– EU Conformity declaration_HMF FS over 500bar SIL 2
– FM APPROVAL HMF_HWF
– SIL2 certification – TUV – HMF_HWF
Datasheet
– HMF Datasheet
Technical specifications
Overview
The HMF series of Gefran are pressure transmitters with HART communication protocol for using in high temperature environment with explosive atmosphere presence.
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 straingauge technology.
The transmitters have been designed and manufactured according to FM standards with the following types of protection and features:
– Explosion-proof (XP) for Class I, Division 1, Groups A, B, C and D
– Dust proof (DIP) for Classes II, III, Division 1, Groups E, F and G
– Indoor and outdoor areas classified as hazardous: Type 4X, IP67
– Rated ambient temperature of T5 Ta = -20°C to +85°C, T6 Ta = -20°C to +60°C
