Gefran Melt pressure sensors will meet your needs in plastics processing. Gefran offers different Melt pressure transducers for different applications at high process temperatures of up to 540°C; the transducers typically are in direct contacts with abrasive, adhesive or aggressive plastic polymer compounds.

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Melt Pressure Sensors & Instrumentation

Fluid free (I Series) IMPACT

The IMPACT series represents the innovative family of the Gefran high temperature melt pressure transducers designed on a patented fluid free technology.

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Sodium-Potassium (NaK) filled (K Series)

Between the filled-in Gefran sensors the Melt pressure transducers filled with sodium-potassium are those able to work at the highest temperatures (i.e. up to 538°C), assuring a total compliance with the maximum levels of accuracy and of reliability.

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Oil-filled (W Series)

The oil-filled melt pressure sensors, designed by Gefran on an extensometric technology, are suitable to work at high temperature, up to 315°C, assuring a total compliance with the maximum levels of accuracy and of reliability.

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Mercury filled (M Series)

The mercury-filled melt pressure sensors, designed by Gefran, are suitable to work with high temperature process media, up to 400°C, and are specifically designed to measure and control melt pressure on plastic machinery, typically extruders.

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Indicators / Controllers

The pressure indicator 96x48 (1/8 DIN) format, have a lexan membrane faceplate (guaranteed to IP65) which has 3 keys, a 5 digit display and 4 indicating LED’s for the output statuses. The input signal can be selected from a wide range of sensors Potentiometer, Strain-gauge pressure sensor or Load cell with sensitivity auto range between 1,5 and 3,3mV/V. Sampling time and trip intervention programmable between 15 and 120msec allow to have a fast response in case of dangerous situation.

MODEL : 40B96, 40TB, 2400, 2500


GRD Rupture Disks

Rupture disks, also known as burst plugs or soft plugs, are used for emergency pressure relief of an extruder. They are designed to instantaneously rupture at a specific pressure.

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KF Mounting hole drilling kit

A properly machined mounting hole is vital to optimal operation of a melt pressure transducer or transmitter. Poorly machined holes can result in damage that causes unreliable output or even total failure.

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CT Mounting Hole Cleaning Kit

The Cleaning Tool Kit is used to remove excess plastic from transducer mounting holes prior to installation. Installation of transducers into plugged and/or dirty mounting holes is a major cause of installation-related damage.

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Transducer simulator mV/V

The TS3 simulates the output of a Gefran mV/V melt pressure transducer (M3 and W3 series) at various pressure levels. It also simulates any strain gage-based transducer and is available in either a 6-pin (TS36) or 8-pin (TS38) version.

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