HMX4 Mercury filled flanged – HART – ATEX – SIL2 – PLd

The HMX4 series of Gefran, are pressure transmitters for use in High-temperature environments 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 equipment for R&D purposes according to the European Directive 2011/65/EU.
The HMX4 series of Gefran is flanged pressure transmitters with HART communication protocol for use in high-temperature environments with explosive atmosphere presence.
The main characteristic of this series is the capability to read the temperature of the media up to 400°C.
The constructive principle is based on the hydraulic transmission of the pressure.
The fluid-filled system assures temperature stability.
The physical measure is transformed into an electrical measure by means of strain-gauge technology.
The SIL2 and PL d approvals make the product suitable for use in the Functional Safety applications, particularly in the process plants for the production of polymers, where it is an essential requirement.

Pressure ranges from: 0-17 to 0-2000 bar/0-250 to 0-30000 psi
Thick film extensimetric measurement principle
Accuracy: < ±0.25% FS (H); < ±0.5% FS (M)
SIL2 and PL d approvals for Functional Safety
ATEX certification for potentially explosive atmospheres
Flanged version
Protection level: IP66 (6-pin connector)
1/2-20UNF, M18x1.5 standard threads; other types available on request
Standard diaphragm is 15-5 PH stainless steel with GTP+ coating
17-7 PH corrugated stainless steel diaphragm with GTP+ coating for ranges below 100 bar-1500 psi
Other diaphragm types available on request