|
|
The task
The transmission and conversion of standard 0 ... ?0 mA and 0... ?0 V signals frequently used in industry, for example, for speed monitoring with tacho-generators.
The problems
Measuring errors occur due to potential differences when bipolar measuring signals are transmitted. In addition, the signal adaptation previously required calibration of the isolators.
The solution
Knick provides a tailor-made solution. The calibrated switching of the input and output ranges using DIP switches allows the Knick VariTrans?P 26000 universal isolation amplifiers to be used without complicated recalibration. The broad-range power supply for all common supply voltages from 20 to 253 V AC/DC is unmatched in this kind of compact modular housing.
The housing
At just 12.5 mm wide, the modular housing with pluggable screw terminals allows simple and fast assembly and prewiring of enclosures. Housings with fixed screw terminals are also available for extremely high mechanical loads. The easy-to-open housing allows easy configuration of the input and output ranges and good protection against touch and unintended adjustment.
The advantages
The analog transmission of the measuring signal with transformer isolation and the digitally controlled measuring range selection guarantees excellent signal transmission:
?Gain error only 0.1 %
?Excellent pulse formation
?Extremely low residual ripple
?Maximum long-term stability and reliability
The technology
A microcontroller monitors the control element settings and controls the calibrated measuring range selection. Interference to the signal transmission ?for example, due to contact resistances in the range switches ?is thus ruled out.
Thanks to the VariPower?power supply, the devices can be used all over the world with almost any power supply. The extremely low power consumption and the related minimal self-heating significantly increase the reliability. That抯 why we give a 5-year warranty.
|
|
|
|
