Dr. E. Horn GmbH is a company specialising in the safety of large engines and drive systems

Dr. E. Horn GmbH is a company specialising in the safety of large engines and drive systems. The main products are sensors, which monitor the safety-relevant parameters of engines and drive systems by means of intelligent sensors; safety systems, which Dr. E. Horn's systems create the conditions for preventive maintenance of engines and drive systems; and display systems, which, by means of individualised display systems (digital or analogue) Dr. E. Horn has intelligent measurement technology that can be customised to the customer's needs, as well as measurement systems that protect the customer's system against malfunctions and ensure the highest possible safety and equipment availability under harsh and difficult environmental conditions.

Magnetic field sensors
Magnetic field sensors are suitable for non-contact speed sensing of objects made of ferromagnetic materials and can be connected to digital speed indicators or frequency-to-analogue converters. They consist of a differential transducer and a post amplifier with an open collector output and, as sensors with a 3-wire connection, they generate a square wave signal at the output. Compared to inductive or capacitive 3-wire sensors, they have the advantage in non-contact speed measurements of generating perfect signals over the entire frequency range of interest, even with relatively large gaps and small modules, over a very large speed range.

Product features
Non-contact velocity sensing: suitable for objects made of ferromagnetic materials for non-contact velocity sensing
Wide frequency range: generates perfect signals in the frequency range of interest, even with relatively large gaps and small modules
Built-in amplifier: Contains a differential transducer and a post-amplifier with an open-collector output.

Technical Parameters
Sampling frequency range: 0-20kHz
Air gap: less than 2 mm at module 2, less than 1 mm at module 1
Auxiliary voltage: UB=+7-30V, no load current max. 15mA, prevents power supply polarity error
Output: Square wave voltage output, short-circuit proof on both sides (Imax=approx. 17mA)
Operating temperature: 0-80°C
Storage temperature: -10-85°C
Maximum line length: approx. 300m
Protection class: IP 67 DIN EN 60529
Weight: 110 g with connection cable, 150 g with plug connection