Gefran SPA products

Contactless linear position transducer with TWIIST patented technology for longer lifetime. The absence of contact on the sensing element allows to obtain a fully-sealed, robust and compact sensor. The high performance in terms of robustness, thermal stability and EMC immunity make the LM-C series suitable for use both in industrial environments and mobile hydraulics applications. The possibility to measure additional variables with respect to position (speed, triaxial inclination, acceleration and vibration, electronics temperature) combined with the CANopen protocol, allows to benefit from the advantages of Industry 4.0 in terms of preventive product and process maintenance.

Contactless linear position transducer with TWIIST patented technology for longer lifetime. The absence of contact on the sensing element allows to obtain a fully-sealed, robust and compact sensor. The high performance in terms of robustness, thermal stability and EMC immunity make the LM-L series suitable for use both in industrial environments and mobile hydraulics applications. The possibility to measure additional variables with respect to position (speed, triaxial inclination, acceleration and vibration, electronics temperature) combined with the IO-Link protocol, allows to benefit from the advantages of Industry 4.0 in terms of preventive product and process maintenance.

The transducer has been improved in order to guarantee greater reliability under all conditions
A sturdier structure makes the LT series even stronger for applications with heavy vibration
Installation is made simpler by the absence of electrical signal variation in output, outside the Theoretical Electrical Stroke. The new grooves provide an excellent alternative to the usual system of fastening with brackets. Ideal for applications on plastic injection presses, vertical presses, and on many other processing machines.

50 to 750 mm stroke. Mechanical fixing and selfaligning linkage using 2 ball-joints. Maximum angular movement up to ± 30°. Independent linearity ± 0.05%. Repetibility 0.01 mm. Infinite resolution. No variation of electrical signal outside theoretical electrical stroke. Displacement speed up to 5 m/s. Working temperature: -30…+100°C. Electrical connections:. PC H 3-pole connector. PC M 4-pole connector to standard DIN43650-ISO4400. PC B 5-pole connector (DIN43322). PC F 3-pole screened cable (1 m length). Life duration: > 25×106 meters or > 100×106 operations, whichever is the smaller (within C.E.U.). Grade of protection IP65.

Rotary sensor for measurement ranges up to 360° with ability to program analogue versions of ±15° steps. Contactless Hall technology for almost infinite sensor life due to absence of wear on the sensing element. Various configurations make the product easy to install on vehicles. High IP protection level, resistance to shock and vibration, and high electromagnetic compatibility make these products suitable for many mobile hydraulics applications. Developed to ensure a robust and high-performance solution for applications such as agricultural machines, construction machines, material handling equipments.

Contactless absolute linear position transducer with ONDA magnetostrictive technology. The Profibus fieldbus interface integrates in complex systems with long communication distances, guaranteeing rapid and secure data transmission. The absence of contact on the cursor eliminates all wear and ensures almost unlimited life of the transducer. Its many advantages include smaller size for easier installation, high protection rating for use in harsh environments, excellent linearity, repeatability, and resistance to vibration and shock, guaranteeing exceptional reliability.

Contactless linear position transducer with innovative GEFRAN ONDA magnetostrictive technology for longer lifetime. The absence of electrical contact on the cursor eliminates all wearing and guarantees almost unlimited life. The new ONDA technology solution (patented by Gefran) allows to obtain an essential modular structure with compact size for simple installation

The transducer has been improved in order to guarantee greater reliability under all conditions. A sturdier structure makes the LT series even stronger for applications with heavy vibration. Installation is made simpler by the absence of electrical signal variation in output, outside the Theoretical Electrical Stroke. The new grooves provide an excellent alternative to the usual system of fastening with brackets. Ideal for applications on plastic injection presses, vertical presses, and on many other processing machines

The “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 `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.