Wirewound potentiometer F25
The product line of fine grinding resistors is characterized by the extremely low torque of 0.003 Ncm, which means that they can be adjusted very sensitively. In order to achieve this torque, the contact pressure of the pickup on the winding is kept as low as possible. The rotary resistors consist of a wound resistance wire and a wiper, which is coupled to the pointer shaft of the measuring device via a coupling system. Only precious metal alloys with high corrosion resistance are used for the tap and the winding. The F25 series has a long service life and is particularly suitable for use in measuring instruments with a pointer function. The F25Z series is specially manufactured for this area of application. Clutch forks and clutch levers are available as accessories for the fine grinding resistors. A measuring transducer with an output signal of 0/4…20mA or 0…10VDC can also be integrated.
Description
Technical specifications
Technical specifications
-Housing: aluminium, glass fiber reinforced plastic
-Shaft: stainless steel
-Bearing type: Sliding bushings
-Slider tap: multiple tap, precious metal
-Protection class: IP60
-Type of connection: pigtails
-Fastening types: clamping claws, mounting foot
Shaft: Ø1,5/1,0×6,0 mm
Size: Ø35×20 mm (without shaft)
Fastening type: Synchro flange, screw connection M2
Torque: up to: 0,003 Ncm / 0,004 Ncm
Angle of rotation elec./mech.: 290°/290° or 358°/360°
Service life: 50 x 10⁶ grinder travel (360°)
Connection: Pigtails
Resistive element: wire
Resistance values + tolerance: 1, 2, 5 K-Ohm ±3%
Linearity: ±0,3%
Sensor output: x
Center tap (terminal): –
Application/ market segment (examples): Humidity and wind measurement, manometer
Properties: Extremely low torque. Particularly suitable for measuring instruments with a pointer function. Long life span. Aluminum casing. Stone storage. Customized function development available
Data sheets
F 25
