Displacement Transducers General
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Gefran displacement transducers: reliability, precision, simple and quick installation Gefran has designed and produced displacement sensors for over 15 years. Over a million installed transducers and in-depth knowledge of processes to be measured guarantee top performance and an excellent quality/price ratio. Gefran produces the sensitive element of its transducers in-house, and is therefore able to guarantee reliability and precision of measurement. Gefran displacement transducers are based on two different technologies: potentiometric, which guarantees the flexibility of a wide range...

GUIDE TO CHOOSING THE BEST TRANSDUCER STROKE LENGTH GEFRAN potentiometric and magnetostrictive transducers measure linear displacement on strokes from a minimum of 10 mm to a maximum of 4000 mm. It is important to remember that two strokes are usually specified: - Mechanical stroke: the actual shift of the transducer cursor; Useful electrical stroke: the part of the mechanical stroke on which transducer linearity is guaranteed. This means that when studying the application, you have to choose a transducer with a useful electrical stroke greater than or equal to the maximum shift of the...

The transducer can be installed on three types of supports: brackets: the traditional method; requires a free surface for installation and uses two or more brackets based on flanges: ideal in applications in which the rod has to pass through a hole and the transducer has to be attached to the walls of the hole; in this case, you have to pay careful attention to conditions of use, especially in case of long self-aligning joints: these are used to attach the ends of the transducer directly to the moving parts; it eliminates other attachment points and allows measurement of unaligned...

BLOWING MACHINES: measures displacement of die opening/closing, die translation, Parison check. MATERIALS WORKING: measures displacement of tools such as brushes, wheels or rolls used in working metal, wood, marble, ceramics. HYDRAULIC AND PNEUMATIC CYLINDERS: piston displacement check the transducer is internal and a magnetic ring cursor is attached to the piston to track its movement. GEOTECHNICS: use of transducers for subsidence meters and strain gauges for structural monitoring cylindrical models are preferred. AUTOMATIVE TEST MACHINES: tuning of suspensions on prototypes and...

SHORT STROKES USEFUL ELECTRICAL STROKE RANGE INDEPENDENT LINEARITY WORK TEMPERATURE RANGE MAXIMUM DISPLACEMENT SPEED PROTECTION LEVEL Sliding cursor Brackets (variable distances between centers) Self-aligning joints Brackets (variable distances between centers) Reliability in measurement and control applications, even under harsh conditions. Brackets allow installation in most appropriate position. The best solution for mechanical applications and vehicle development, automation and robotics, thanks to its sturdiness and accuracy. The absence of a rod lets the cursor be used along the axis...

SHORT STROKES Brackets (variable distances between centers) Brackets (model -S) Joints (model -A) Flange (model -F) Brackets (model -S) Joints (model -A) Flange (model -F) Compact. A joint provides greater tolerance in movement. Reliable even at high speeds or if subject to impact and vibration. Problems traditionally associated with rotative potentiometers (especially reliability, life, accuracy and speed) are eliminated. The ability to attach joints provides error-free operation even in case of misalignment between transducer axis and direction of movements. BENDERS SANDERS TRANSFER...

ALTA IMPERMEABILITA’ USEFUL ELECTRICAL STROKE RANGE INDEPENDENT LINEARITY WORK TEMPERATURE RANGE MAXIMUM DISPLACEMENT SPEED PROTECTION LEVEL Ring cursor Ring cursor Ring cursor Potentiometric displacement transducers Brackets (variable distances between centers) For pneumatic cylinders. Pre-wired models or models with connector. High protection level and sturdiness guarantee long life. For hydraulic cylinders. Model with threaded flange lets you install transducer without removing cylinder. For hydraulic cylinders, where smaller rods are necessary dimensions. As in the PMI12, the model with...

HIGH IMPERMEABILITY Ring cursor Ring cursor Self-aligning joints For in-cylinder applications that require an economic solution with integrated analog signal. Coaxial rod for installation with self-aligning joints. Low friction, self-cleaning rod completely in anodized aluminum. The best solution for installation in small spaces. Used especially inside hydraulic cylinders. GEOTECHNICS UTILITY VEHICLES HYDRAULIC CYLINDERS BOTTLING INJECTION PRESSES EARTH MOVING ELEVATORS SANDERS LEATHERWORKING Potentiometric displacement transducers HYDRAULIC CYLINDERS

Potentiometric displacement transducers USEFUL ELECTRICAL STROKE RANGE MAXIMUM DISPLACEMENT SPEED PROTECTION LEVEL Rod with return spring Rod with return spring Brackets (variable distances between centers) Brackets (variable distances between centers) Brackets (variable distances between centers) INDEPENDENT LINEARITY WORK TEMPERATURE RANGE APPLICATIONS Compact. Double support for measurement rod. Side connection permits through-rod structure, guaranteeing greater overall sturdiness of the sensor. Model PY1 has a joint for greater tolerance in movement. PY2 and PY3 automatically position...

SHORT STROKES Standard: 3 msec (max: 5 msec) Standard: 3 msec (max: 5 msec) Standard: 3 msec (max: 5 msec) Standard: 3 msec (max: 5 msec) Brackets (variable distances between centers) Self-aligning joints Self-aligning joints Brackets (variable distances between centers) is designed to guarantee a high protection level (IP67) in applications under harsh conditions and outdoors, where it may be necessar y to work in the direct presence of dust, dir t, or liquids (not in prolonged immersion). INJECTION PRESSES MOBILE HYDRAULICS AGRICULTURAL MACHINES EARTH MOVING TEST BENCH EQUIPMENT