Description
Tempress OPF Angle transmitter
OPF is a non contact photo-electric potentiometer
- Developed as a servo system
- The mechanical design secures the friction resistance is kept at a minimun and with a unique linearity. The repeatability is less than 1% on the full range (270 <°).
- The unique sensing system in the OPF secures a reliable measuring signal even under extreme conditions such as high vibration level repeated cycles over the same working area.
- ATEX and IECEx Approved
Application:
The Tempress opto-angular position transmitter type OPF provides a new and better method of measuring rotational movements than offered by conventional potentiometers. The weak points of conventional potentiometers are eliminated with the OPF transmitter, that is, problems like wear, noise, hysteresis and difficulty in obtaining a high repeatability are effectively avoided. This means that the OPF angular position transmitter can be used in situations where conventional technology previously prevented the use of an analogues signal for measuring control.
The wellknown potentiometer:
A conventional potentiometer consists of a resistor which may be made of a carbon composite, a thin metal layer, a coiled resistance wire or similar components. The electric pick-up takes place via a spring loaded wiper which is moved along the resistor. Because of the resulting friction, a certain torque is needed to move the wiper. And this friction is the cause of the weaknesses of conventional potentiometers.