
OverviewThe "IMPACT" series of Gefran are pressure transmitters, without transmission fluid, for using in high temperature environment (350°C). Medium pressure is transferred directly to the sensitive silicon element via a thick diaphragm. Strain is transduced by a micro-machined silicon structure (MEMS). The operating principle is piezoresistive. The micro structure includes the measurement membrane and piezoresistors. The minimum deflection required by the sensitive element makes it possible to use very robust mechanics. The process contact membrane can be up to 15 times thicker than the membrane used in traditional Melt sensors. Application:
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Description
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OverviewThe "IMPACT" series of Gefran are pressure transmitters, without transmission fluid, for using in high temperature environment (350°C). Medium pressure is transferred directly to the sensitive silicon element via a thick diaphragm. Strain is transduced by a micro-machined silicon structure (MEMS). The operating principle is piezoresistive. The micro structure includes the measurement membrane and piezoresistors. The minimum deflection required by the sensitive element makes it possible to use very robust mechanics. The process contact membrane can be up to 15 times thicker than the membrane used in traditional Melt sensors. Application:
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Description
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OverviewThe “IMPACT” series of Gefran, are pressure transmitters, without transmission fluid, for using in High temperature environment (350°C). Medium pressure is transferred directly to the sensitive silicon element via a thick diaphragm. Strain is transduced by a micro-worked silicon structure (MEMS). The operating principle is piezoresistive. “IMPACT” is Gefran’s exclusive series of high-temperature pressure sensors that use the piezoresistive principle. The main characteristic of “IMPACT” sensors is that they do not contain any transmission fluid. The sensitive element, directly positioned behind the contact membrane, is realised in silicon through microprocessing techniques. The micro structure includes the measurement membrane and piezoresistors. The minimum deflection required by the sensitive element makes it possible to use very robust mechanics. The process contact membrane can be up to 15 times thicker than the membrane used in traditional Melt sensors. |
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The IMPACT series represents the innovative family of the Gefran high temperature melt pressure transducers designed on a patented fluid free technology.
A silicon piezoresistive primary element together with a high intrinsic robustness let the IMPACT sensors to work at pressures up to 3000 bar and to reach temperatures of 350 °C.
The whole IMPACT series is conform to the RoHS Directive and in the PL “c” version is compliant with the European norm EN1114-1 related to the safety requirements for the extruders.
| I3 mV/V Output | IE Performance Level PL 'c' - 4...20mA output |
| IN Voltage output | I7 Performance Level PL 'c' - Voltage output |
| IX Atex - 4...20mA output | |
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Description
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Overview |
Description
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OverviewThe “IMPACT” series of Gefran, are pressure transmitters, without transmission fluid, for using in High temperature environment (350°C). Medium pressure is transferred directly to the sensitive silicon element via a thick diaphragm. Strain is transduced by a micro-worked silicon structure (MEMS). The operating principle is piezoresistive. “IMPACT” is Gefran’s exclusive series of high-temperature pressure sensors that use the piezoresistive principle. The main characteristic of “IMPACT” sensors is that they do not contain any transmission fluid. The sensitive element, directly positioned behind the contact membrane, is realised in silicon through microprocessing techniques. The micro structure includes the measurement membrane and piezoresistors. The minimum deflection required by the sensitive element makes it possible to use very robust mechanics. The process contact membrane can be up to 15 times thicker than the membrane used in traditional Melt sensors. |
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OverviewThe WE Performance Level 'c' Series are pressure sensors for use in high temperature applications where the process temperatures may reach 315°C (600°F) such as high temperature engineered polymers. The W Series utilizes standard melt pressure principles and construction; strain sensing technology is bonded foil strain gage. A near incompressible mixture (diathermic oil) is used for pressure transmission. |
Description
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OverviewThe “IMPACT” series of Gefran, are pressure transmitters, without transmission fluid, for using in High temperature environment (350°C). Medium pressure is transferred directly to the sensitive silicon element via a thick diaphragm. Strain is transduced by a micro-worked silicon structure (MEMS). The operating principle is piezoresistive. “IMPACT” is Gefran’s exclusive series of high-temperature pressure sensors that use the piezoresistive principle. The main characteristic of “IMPACT” sensors is that they do not contain any transmission fluid. The sensitive element, directly positioned behind the contact membrane, is realised in silicon through microprocessing techniques. The micro structure includes the measurement membrane and piezoresistors. The minimum deflection required by the sensitive element makes it possible to use very robust mechanics. The process contact membrane can be up to 15 times thicker than the membrane used in traditional Melt sensors. |
Description
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OverviewThe W7 Performance Level 'c' Series are pressure sensors for use in high temperature applications where the process temperatures may reach 315°C (600°F) such as high temperature engineered polymers. The W Series utilizes standard melt pressure principles and construction; strain sensing technology is bonded foil strain gage. A near incompressible mixture (diathermic oil) is used for pressure transmission. |
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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.
Every single sensor of the W series, besides using a FDA approved filling fluid, if fully compliant with RoHS Directive.
The W serie Performance Level 'c' version is conform to the European standard EN1114-1 related to the safety requirements for extruders.
What's new in Oil-filled (W Series)
SAFE, EFFICIENT AND STATE-OF THE-ART MACHINERY WITH THE NEW PERFORMANCE LEVEL ‘C’ FILLED SENSORS
The new Performance Level ‘c’ versions are the ideal solution for increasing the safety of extruders.

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OverviewThe W6 Series has an improved digital readout utilizing an extra-large five-digit display. The W6 Series melt pressure gauge provides reliable, maintenance-free, localized pressure indication. The small capillary tube filled with a special medium isolates the gauge housing from potential thermal damage. |
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OverviewThe HWE 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 315°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. |
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OverviewThe HWX 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 315°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. |
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OverviewThe KE Performance Level 'c' Series are pressure sensors for use in high temperature applications where the process temperatures may reach 538°C (1000°F) such as high temperature engineered polymers. The K Series utilizes standard melt pressure principles and construction; strain sensing technology is bonded foil strain gage. A near incompressible sodium-potassium (i.e. NaK) mixture is used for pressure transmission. NaK is FDA recognized safe (GRAS) substance. |
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OverviewAll models are rugged, totally self-contained, and allow the user to benefit from the improved efficiency and quality that goes with pressure monitoring. The Gefran melt pressure gauge provides reliable, maintenance- free, localized pressure indication. The small capillary tube filled with a special medium isolates the gauge housing from potential thermal damage. |
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OverviewThe K7 Performance Level 'c' Series are pressure sensors for use in high temperature applications where the process temperatures may reach 538°C (1000°F) such as high temperature engineered polymers. The K Series utilizes standard melt pressure principles and construction; strain sensing technology is bonded foil strain gage. A near incompressible sodium-potassium (i.e. NaK) mixture is used for pressure transmission. NaK is FDA recognized safe (GRAS) substance. |
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OverviewThe MX4 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). |
Description
Further versions available on request. |

OverviewThe K3 Series are pressure sensors for use in high temperature applications where the process temperatures may reach 538°C (1000°F) such as high temperature engineered polymers. The K Series utilizes standard melt pressure principles and construction; strain sensing technology is bonded foil strain gage. A near incompressible sodium-potassium (i.e. NaK) mixture is used for pressure transmission. NaK is FDA recognized safe (GRAS) substance. Application:
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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.
All the NaK sensors are conform to the RoHS Directive thanks to the sodium-potassium filling fluid, considered a substance “Generally Recognized As Safe“ (GRAS).
The Nak serie Performance Level 'c' version is conform to the European standard EN1114-1 related to the safety requirements for extruders.
What's new in Sodium-Potassium (NaK) filled (K Series)
SAFE, EFFICIENT AND STATE-OF THE-ART MACHINERY WITH THE NEW PERFORMANCE LEVEL ‘C’ FILLED SENSORS
The new Performance Level ‘c’ versions are the ideal solution for increasing the safety of extruders.

OverviewThe 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. The Cleaning Tool Kit allows the mounting hole to be properly cleaned and checked for integrity. Cleaning tools are available for 1/2-20 mounting holes (CT12) and M18x1.5 mounting holes (CT18). Note: The cleaning tool should be used when the polymer is molten. Care must be taken not to exceed the specified torque rating (125 inch-pounds) so as to not damage the tool. |
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OverviewThe KE Series are pressure sensors for use in high temperature applications where the process temperatures may reach 538°C (1000°F) such as high temperature engineered polymers. The K Series utilizes standard melt pressure principles and construction; strain sensing technology is bonded foil strain gage. The uses a near incompressible NAK (Sodium Potassium) for pressure transmission. NaK is FDA recognized safe (GRAS) substance. Application:
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OverviewA 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. The transducer mounting hole drill kit contains the necessary drill bits and taps needed to machine a standard transducer mounting hole, including a special pilot drill required to machine the 45 degree seat. Drill kits are available for the 1/2-20 mounting hole (KF12) and the M18x1.5 mounting hole (KF18). |
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OverviewThe KN Series are for use in high temperature applications where the process temperatures may reach 538°C (1000°F) such as high temperature engineered polymers. The K Series utilizes standard melt pressure principles and construction, but uses a near incompressible NAK (Sodium Potassium) for pressure transmission. The K Series strain sensing technology is bonded foil strain gage. |
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OverviewUse to connect Gefran transducers to indicators |
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OverviewThe KD Series are pressure sensors for use in high temperature applications where the process temperatures may reach 538°C (1000°F) such as high temperature engineered polymers. The K Series utilizes standard melt pressure principles and construction; strain sensing technology is bonded foil strain gage. A near incompressible sodium-potassium (i.e. NaK) mixture is used for pressure transmission. NaK is FDA recognized safe (GRAS) substance. Application:
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DescriptionElectrical
Mechanical
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DescriptionRupture disks, also known as burst plugs or soft plugs, are used for emergency pressure relief of an extruder. |

OverviewThe HKE 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 538°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. |
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OverviewThe TS3 simulates the output of a Gefran mV/V melt pressure transducer (M3 and W3 series) at various pressure levels. The TS3 simulates any strain gage-based transducer and is available in either a 6-pin (TS36) or 8-pin (TS38) version. |
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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.
All products related to M Series are available only to be used in large-scale fixed installations or in large-scale stationary industrial tools, or for laboratory B2B equipments for R&D purposes according to the European Directive 2011/65/EU.

OverviewThe M3 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 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 phisical measure is transformed in a electrical measure by means the strain-gauge technology. |
Description
Further versions available on request. |

OverviewThe ME 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 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 phisical measure is transformed in a electrical measure by means the strain-gauge technology. |
Description
Further versions available on request. |

OverviewThe MN 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 MN series of Gefran, are pressure transmitters 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 phisical measure is transformed in a electrical measure by means the strain-gauge technology. |
Description
Other diaphragms available on request. |

OverviewThe ME Pl'c' 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 ME Performance Level 'c' Series are pressure sensors for use in high temperature applications where the process temperatures may reach 400°C (°F) such as high temperature engineered polymers. The K Series utilizes standard melt pressure principles and construction; strain sensing technology is bonded foil strain gage. A near incompressible liquid (mercury) is used for pressure transmission. |
Description
Further versions available on request. |

OverviewThe M7 PL'c' 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 M7 Performance Level 'c' Series are pressure sensors for use in high temperature applications where the process temperatures may reach 400°C (°F) such as high temperature engineered polymers. The K Series utilizes standard melt pressure principles and construction; strain sensing technology is bonded foil strain gage. A near incompressible liquid (mercury) is used for pressure transmission. |
Description
Further versions available on request. |

OverviewThe MD 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). (see informative note RoHS II). |
Description
Further versions available on request. |

OverviewThe MX 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 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 phisical measure is transformed in a electrical measure by means the strain-gauge technology. |
Description
Further versions available on request. |

OverviewThe M6 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 M6 Series has an improved digital readout utilizing an extra-large five-digit display. The M6 Series melt pressure gauge provides reliable, maintenance-free, localized pressure indication. The small capillary tube filled with a special medium isolates the gauge housing from potential thermal damage. |
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OverviewThe 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
Further versions available on request. |

OverviewThe HMX 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 HMX 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 strain-gauge technology. |
Description
Further versions available on request. |

OverviewThe M0 Series is a melt pressure control system which comes complete with the following items:
The M0 Series is an excellent solution for those who wish to have the accuracy and stability of a transducer and digital controller at a great price. |
DescriptionIndicator
Transducer
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OverviewIndicator
Transducer
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DescriptionThe M8 Series is a melt pressure monitoring system which comes complete with the following items:
The M8 Series is an excellent solution for those who wish to have the accuracy and stability of a transducer and digital indicator at a great price. |

OverviewIndicator
Transducer
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DescriptionThe M92 is a melt pressure and temperature monitoring system which comes complete with the following items:
The M92 is an excellent solution for those who wish to have the accuracy and stability of a transducer and digital indicator at a great price. |

OverviewIndicator
Transducer
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DescriptionThe M7 Series is a melt pressure monitoring system which comes complete with the following items:
The M7 Series is an excellent solution for those who wish to have the accuracy and stability of a transducer and digital indicator at a great price. |

OverviewThe W0 Series is a melt pressure control system which comes complete with the following items:
The W0 Series is an excellent solution for those who wish to have the accuracy and stability of a transducer and digital controller at a great price. |
DescriptionIndicator
Transducer
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OverviewThe W92 is a melt pressure and temperature monitoring system which comes complete with the following items:
The W92 is an excellent solution for those who wish to have the accuracy and stability of a transducer and digital indicator at a great price. |
DescriptionIndicator
Transducer
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