Publications Inelta Sensorsysteme
Accredited calibration service for force sensors
For a permanently high measurement reliability and precision of force sensors, their regular control and calibration within defined intervals are required. For this purpose, Inelta Sensorsysteme offers an accredited calibration service for force sensors through its subsidiary Vypro spol s.r.o. The Vypro calibration laboratory is accredited according to European standard ISO/IEC 17025: 2017 by the Slovak accreditation body SNAS for the mechanical measurand force. The calibration service includes both products of own manufacture and third-party products in the measurement range from 0.1kN to 200kN. Tensile and compressive force sensors, ring force sensors, but also bending and shear bars, tension measuring clips and special force sensors are tested. After checking the calibration capability of the test specimen, it is compared to a standard using an EN ISO 376 conform PP force gauge to correct deviations from the standard. An internationally recognized certificate or factory calibration certificate is issued by Vypro as proof of calibration. Traceability of the sensor calibration is ensured via the serial number. Furthermore, Vypro performs application-specific calibrations and offers a repair service for DUTs as well as an express service upon request. Detailed information and contact details for the calibration service are available on the company website at: https://www.vypro.de/en/expertise/calibration-service/
Inelta subsidiary Vypro offers an ISO/IEC accredited calibration service for force sensors of various types
Sensor specialist with great LVDT expertise
Due to many years of experience, own coil and LVDT production, Inelta Sensorsysteme is considered a proven specialist in the development and production of these inductive precision sensors. Due to their non-contact measuring principle, the hysteresis-free LVDTs achieve a virtually unlimited resolution, which depends only on the quality of the signal amplification. With their high measurement precision, repeatability, and principle-based freedom from wear, they are therefore ideal for applications requiring maximum reliability and long service life. Inelta's wide range of LVDTs includes the LVDT-ISDP and LVDT-ISAP series with pneumatic push rod for measuring travels from 5 mm to 50 mm. The inductive sensors, which are available both with and without an integrated measuring amplifier in three device sizes, enable exact position determination of, for example, plate materials with a measuring accuracy of up to =0.1 mm. For long-term monitoring of bridge statics, Inelta's product range includes the LVDT-ISAG-300-k model, a weatherproof sensor that reliably detects even the smallest displacements at critical load points. The LVDT-IOAG series is tailored to particularly demanding environmental and operating conditions. The structure, welded housing and cable design reliably protect the LVDT from penetrating seawater or brackish water. This predestines this sensor version with 100 mm measuring travel for use, for example, in bridge surveying, heavy machinery, road and rail construction or railroad and power plant technology. In addition, Inelta assembles LVDTs for heavy machinery on request in robust hexagonal housings for customer-preferred wrench sizes to simplify sensor replacement under harsh conditions. Supplementary, the manufacturer can modify the LVDT designs to suit specific applications, for example with a sensing function, as a displacement transducer with a continuous push rod or with oil compensation holes. Inelta also offers suitable solutions for inductive displacement measurement in miniature format, such as the IKDT displacement sensor in a stainless-steel housing. With a diameter of only 8 mm and sensing lengths of 2, 5, 10 and 20 mm, the miniature sensor with integrated measuring amplifier requires only minimal installation space and measures extremely precisely with a linearity deviation of only ±0.3 %.
Inelta combines a high level of LVDT expertise with a wide range of products for a wide variety of applications, which can also be modified to meet specific customer requirements
Force sensors for static and dynamic measurements
Inelta Sensorsysteme has a comprehensive product range of force sensors for precise dynamic and static measurements in all industrial areas of mechanical engineering, automation technology, laboratory, and medical technology as well as for special applications. The range of force sensors based on foil strain gauges (DMS) includes the KMM65 series designed for measuring ranges from 1 kN to 500 kN. Designed for pressure and tension measurement in industrial presses, testing or weighing systems, the robust transducers in nickel-plated steel housings - or optional stainless steel versions - achieve protection class IP65. With the KMM30 and KMM62 models, the sensor specialist stocks compact sensors for absorbing small forces of 0.1 kN to 2 kN in tension and compression, which are easy to mount thanks to regular standard threads. In addition, Inelta offers ring force transducers for measuring axial forces on screws, shafts or axles. Typical applications include the determination of preload forces on bolted connections. The ring force transducers of the RKT60 series, manufactured in protection class IP 67, are designed for nominal forces from 5 kN to 20 kN. They integrate overload protection and a measuring amplifier with 4..20 mA analog output and are protected against vibration, dust and moisture by potting. For tactile force measurements in medical devices and robot arms or for load testing of small components, Inelta has developed the FS12 miniature force transducer for compression and tension forces up to 100 N, 200 N and 500 N, respectively. Weighing only 20 g, this bending beam force sensor is the smallest force sensor in the product range. The company, which has its own development and production facilities at its headquarters in Taufkirchen, also manufactures customer-specific modified sensor technology or complete special solutions on request. In addition, Inelta offers an accredited calibration service for force sensors through its sister company Vypro Sensors (www.vypro.de).
Sensor specialist Inelta has an extensive range of force sensors for a wide variety of measuring and application areas
LVDT displacement sensors with pneumatic push rod
With the LVDT-ISDP and LVDT-ISAP series, Inelta Sensorsysteme offers special displacement sensors with pneumatic push rods for measuring ranges from 5mm to 50mm. The inductive sensors, which are available both with and without integrated measuring amplifiers in three device sizes, enable the exact determination of the position of, for example, sheet materials with a hysteresis-free measuring accuracy of up to ≤0.1mm. To prevent mechanical interference with the sensor technology, the push rod remains pneumatically retracted until the measuring process. For position detection, the measuring tip is extended by means of spring force and then pneumatically returned. The slim displacement sensors, manufactured to IP65 in a nickel-plated steel housing, are approved for use in temperature ranges from -35°C to +120°C and are shock and vibration protected in accordance with DIN IEC 68T2. Optionally, Inelta also supplies the units in IP67 or IP68 protection, with customized cable lengths, plug connection as well as in versions with a linearity tolerance below 0.25% or for an extended temperature range. On request, the sensors are also available with individual calibration. In addition to mounting blocks, clamping flanges, probe tips and pneumatic connections, various measuring amplifiers for DIN rail and PCB mounting as well as with cable connection are available as accessories.
Inductive displacement sensors with pneumatically retracted push rod for precise positioning of sheet materials
Highly compact OLED display module for force sensors
Inelta Sensorsysteme has introduced the IMK-2442-OLED cable electronics as a new digital display unit for strain gauge force sensors with integrated measuring amplifier. With dimensions of only 60x35x22mm, the particularly compact display module with OLED display can be easily integrated into the signal transmission via sensor cable using a plug and socket in M12 format. The display unit, which is compatible with all sensors with a current output of 4...20mA, optionally indicates the output values of force sensors in newtons or milliamps, but can also display the movement in millimeters e.g. for LVDT sensors. The display updates the display values at 100ms intervals. This makes the module suitable for all applications where measured values in newtons, mA or mm are required near the sensor without applying the display directly to the sensor. Due to the robust housing made of anodized aluminum and the electronics protected by potting compound, the display unit, which is manufactured in protection class IP64, can permanently withstand even demanding operating conditions in a temperature range from -10°C to +60°C. To complete the range, Inelta has announced the market launch of a further device variant with voltage output 0...10V. In addition, the manufacturer already offers the IMK-DMS-OLED model, a highly compact solution for strain gauge-based force sensors without their own measuring amplifier. This series is equipped with the complete amplifier electronics for a force sensor with strain gauge bridge circuit and displays the force applied to the force sensor in Newton as well as the measuring range and the calibration date.
Highly compact cable electronics with OLED display for sensors with integrated measuring amplifier
Customer-specific Inelta valve sensors in serial quantities
Inelta Sensorsysteme, leading sensor manufacturer for measuring distances, movement and force, has developed valve sensors and position switches based on its LVDT technology and featuring high precision and a rugged design for hydraulic applications. Inelta LVDT-HY series sensors, for example, with a measuring range between ± 1.2 mm and ±10 mm, provide accuracies in the µm range in detecting valve positions. As a market innovation, Inelta has introduced LVDT-based valve sensors, designated IHDL-M16, where the sensor module can be exchanged without interrupting or opening the hydraulic circuit. Drawing on many years of know-how in research and development and high production capacities, the sensor specialist is capable of producing custom-designed valve sensors for demanding applications in high quantities. Like the standard product line, custom-designed valve sensors are supplied as incapsulated, turnkey systems, consisting of an LVDT sensor, a pressure tube and a connecting shaft. The systems are available for measuring ranges between 1.2 mm and 36 mm, as versions for installation as an add-on or as integrated sensors. All hydraulic components can withstand 400 bar pressure with max. pressure peaks up to 1,200 bar. Outputs are customer-specified, analog 4…20mA or 0…10V or with digital interfaces such as IO-Link. Upon request, Inelta will design sensors for other applications, such as pumps and dosage systems. For applications with high vibration and shock, Inelta has developed a sensor capable of handling 30g. The standard protection class for all units is IP65 (IP67 to IP69 optional), and they can be used in ambient temperatures from -25 °C to +100 °C. Higher protection classes and an extended temperature range of -45 °C to +125 °C are available on special request.
Inelta supplies custom-designed valve sensors in serial quantities
New ring force sensors
Inelta is expanding its range of custom-made sensors to include ring force sensors for measuring the axial forces applied to screws, shafts, or axles. Typical applications for this type of sensor – which are also known as “load washers” because of how they are fitted – include determining or monitoring the pre-tensioning forces of screw connections. The compact models in the new series have an external diameter of up to 60 mm and can record compressive forces of up to 200 kN. Depending on the desired through-hole size, the installation height is just 8 to 11 mm. Another of the company’s innovations in this area are the versions with an integrated signal conditioner. Thanks to the full-bridge strain gauge configuration, the stainless steel deformation elements, and flat contact surface measuring just 0.05 mm, the new ring force sensors ensure a very high level of insensitivity to eccentric forces. Inelta supplies the standard models in an encapsulated design together with a matching signal conditioner – and can also be provided with an integrated newton indicator if required. Further versions of the ring force sensor are currently under development at Inelta. Application know-how is key The reliability of a measurement solution not only depends on the use of robust sensor technology, but also on specific design features of the selected sensor models, their application-specific configuration, and correct placement. That is why Inelta, as a specialist in industrial sensor technology, supports its customers with comprehensive application know-how, in-depth advice and, where required, also carries out custom-fit modifications to its products.
Inelta is expanding its product range to include customized ring force sensors
Standardized calibration service for force sensors
Even when using high-quality force sensors, environmental and operating conditions can still result in aging of the sensors and cause the measurement values to drift. Therefore, force sensors used for applications that require a high level of measurement precision should be calibrated on an annual basis in accordance with EN ISO 376. The sensor manufacturer Inelta is now also offering this type of calibration service for users of products from other manufacturers. The Inelta Group has its own accredited testing laboratory certified in accordance with EN ISO/IEC 17025:2017. The sensor specialist is thus able to provide its force sensors with all of the required factory calibration and other calibration certificates and can also carry out recalibrations at the company. On request, Inelta can now also calibrate and certify third party products with measurement ranges from 0.1 kN to 200 kN. Application know-how is key The reliability of a measurement solution not only depends on the use of robust sensor technology, but also on specific design features of the selected sensor models, their application-specific configuration, and correct placement. That is why Inelta, as a specialist in industrial sensor technology, supports its customers with comprehensive application know-how, in-depth advice and, where required, also carries out custom-fit modifications to its products. Company background Inelta Sensorsysteme GmbH & Co. KG, based in Taufkirchen near Munich, has been developing, producing, and selling standard and customized sensor solutions for industrial applications since 2000. Together with PIL Sensoren GmbH (Erlensee near Frankfurt/Main), a pioneer in the field of ultrasonic technology, and VYPRO s.r.o. (Trencín, Slovakia), the company offers a wide range of products for measuring the displacement and position of an object, as well as force, pressure, and inclination. The range of products we offer includes force sensors, sensor signal amplifiers, pressure switches, capacitive sensors, and ultrasonic sensors. Cable and connector assembly services round off our portfolio. Our group of companies supplies products and services to customers in the industrial automation, mechanical engineering, hydraulics, medical technology, and aerospace industries. We especially focus on industry and customer-specific sensor solutions, which are constantly enhanced thanks to our interdisciplinary expertise.
Recalibration of force sensors in compliance with the relevant standards: Inelta can now also certify third party products in the company’s own testing laboratory
Measurement ranges and parameters for the calibration service from Inelta
Inelta is expanding its range of bending beams
Inelta is continuing to extend its range of bending beams with the FT21 series. The tension and compression force transducers with low space requirements and an integrated measuring amplifier combined with high linearity are used for measuring small and medium sized forces. Through-holes are used to make integration and fastening easy. The FT21 bending beams with the dimensions 68 mm x 28.5 mm x 26 mm are intended for the range 0.2 kN to 1 kN while the model dimensions for 2 kN to 10 kN are 78 mm x 31.5 mm x 33 mm. The type of output signals can be selected from various voltage or current outputs. The degree of protection on the double bending beam sensor is IP64. With a nominal temperature range of -20 °C to +60 °C, it is suitable for applications from stage technology, cranes, lifts and lifting technology, to production machines, material testing, presses, or welding systems. With its product portfolio, Inelta provides a comprehensive bending beam program from 100 N to 10 kN in different size categories. Application know-how is key The measurement solution reliability not only depends on the use of robust sensor technology, but also on specific design features of the selected sensor models, their application-specific configuration, and correct placement. That is why Inelta as a specialist in industrial sensor technology supports its customers with comprehensive application know-how, in-depth advice and, where required, also carries out custom-fit modifications to its products.
FT21, the strongest and FS12, the smallest of Inelta’s bending beams
Replaceable at full process pressure: New LVDT valve sensors with a modular design
With their special modular construction, the LVDT-based valve sensors in the IHDL-M16 series from Inelta Sensorsysteme allow the sensor module to be replaced while the process is running. Whereas in conventional LVDTs used in hydraulic applications, the sensor technology with the coil windings and the pressure-encapsulated tube for the core or core extension form one unit, the IHDL-M16 series has the advantage that the pressure tube and sensor are mounted separately for linear displacement transducers. In addition to that, the core extension is connected to the valve first and then sealed by the pressure pipe with an M16x1.5 flange on the process side. The sensor can then be slid over the pressure pipe and removed at any time for servicing without interrupting the ongoing process. Pressure pipe and flange are designed for pressures up to 550 bar. The new valve sensors feature measurement ranges of up to 40 mm despite being particularly short. Thanks to the absolute measuring principle, the sensors always recognize the correct core position again after a service has been carried out or in the event of a power failure. There are two potentiometers protected by sealing screws on the back of the housing for setting the offset and gain. When requested to do so, Inelta is also glad to support its customers with the realization and implementation of special measurement solutions. Thanks to its engineers’ comprehensive application know-how combined with production in Germany, the manufacturer is able to create special solutions or modify series sensors for customer-specific requirements at short notice. Application know-how is key The measurement solution reliability not only depends on the use of robust sensor technology, but also on specific design features of the selected sensor models, their application-specific configuration, and correct placement. That is why Inelta as a specialist in industrial sensor technology supports its customers with comprehensive application know-how, in-depth advice and, where required, also carries out custom-fit modifications to its products. Company background Inelta Sensorsysteme GmbH & Co. KG with its headquarters in Taufkirchen near Munich has been developing, producing, and selling standard and customized sensor solutions for industrial applications for more than 25 years. Together with PIL Sensoren GmbH (Erlensee near Frankfurt/Main), an ultrasonic sensor system pioneer, and VYPRO s.r.o. (Trencín, Slovakia), the company offers a wide range of products for measuring displacement and position as well as force, pressure and inclination measurement. The range includes force sensors, sensor signal amplifiers, pressure switches, capacitive sensors and ultrasonic sensors. Our portfolio is nicely rounded off with cable and connector assembly services. Most of the group of companies’ customers are in industrial automation, mechanical engineering, hydraulics, medical technology as well as the aerospace industry. We especially focus on industry and customer-specific sensor solutions and are constantly expanding this focus with interdisciplinary know-how.
Valve sensor IHDL-M16: The sensor module can be replaced while the process is ongoing thanks to the modular design with a separate pressure tube.