69123 Heidelberg, de
+49 (6221) 7722-33
APPLICATION NOTE: Wiring harnesses include glass encapsulated thermistors
Force Engineering choose Variohm for linear motor winding temperature monitoring(PresseBox) ( Heidelberg, )
The special temperature probes are similar to standard components available as stock items from Variohm EuroSensor, however with 10K3976 series thermistors which offer a higher temperature range and stability specification than the standard probe. With the NTC chip encapsulated in hermetically sealed glass packages, these thermistors - which are supplied to Variohm from TE Connectivity, the global sensor and measurement systems company - are in turn encapsulated and fully sealed in copper tube housings by Variohm EuroSensor at its Towcester manufacturing facility.
The 10K3976 glass thermistor has a temperature range of -40 to +250 ?C and is specified in applications where a fast time response is required at high levels of thermal shock. Three special probes are each wired with different length leadwires and coloured insulated, all finished with rubber shrink-sleeving. Additional cabling, without thermistors, is also included in the harness to facilitate straightforward assembly into the LIM’s manufactured by Force Engineering.
Whilst Variohm stocks and supplies a comprehensive range of glass or epoxy coated thermistors with NTC and PT sensors as components, the specialist sensor manufacturer has developed many standard products like the probes for Force Engineering as convenient assemblies that may be integrated directly into the customer’s application. These assemblies take the form of electrical ring terminals, hexagonal bolts and pipe clamps as well as cylindrical probes finished in PTFE, stainless steel, brass and other materials. These assemblies for instance help power amplifier manufacturers directly sense chassis or heatsink temperature through ring terminal probes. In this way the customer can overcome the potential problems of handling and installing tiny NTC or PT type temperature sensor, reduces components and suppliers from more streamlined production and reduces maintenance.
In addition to specialist temperature probe assemblies, Variohm also includes customised production by transforming other components from its wide range of sensors for linear and rotary position, pressure, load/force, and vibration etc. Modifications can range from alternative electrical connection or a modified mounting arrangement to integrating sensors with significant redesigns or combining multiple sensor technologies and other electromechanical components as fully tested sub-assemblies.
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