Weight Transmitter
Electronic Weight Transmitter Kiepe EGP 503 and 504The electronic weight transmitter Kiepe EGP converts mechanical pressure into electrical current to allow the vehicle load to be determined with the aid of the pneumatic suspension system.
A piezoresistive sensor converts pressure at the appliance into an electrical signal. The downstream amplifier generates an output current linear to the pressure. The measuring signal between 4 and 20 mA correlates with the pressure as shown in the downstream electrical data. The zero offset of 4 mA permits the user to easily identify line interruption.
Electro-mechanical Weight Transmitter Kiepe EGM
The Kiepe EGM is an electronic weight transducer that converts spring deflection into voltage and current signals. Loading levels of vehicles, equipped with mechanical spring suspension, can be measured according to the following schematic diagram.
Construction
The electronic weight transducer is built into an aluminum casing mounted to the spring suspension as shown in the above schematic diagram. A lever connected to a shaft converts spring deflections into a rotary motion.
Function
An oscillator produces an alternating voltage of constant amplitude. The voltage is transferred by means of a coupling coil. The coupling factor is varied by means of a metal tongue. The transferred alternating voltage is proportional to deflections. The alternating voltage is then rectified, linearized, scaled and shown as voltage (4 ... 10 V) and current (4 ... 20 mA) outputs. The electrical output signals in the measuring range of the stroke are in linear proportion to the deflections. For further deflections outside the measuring range ?s there are no defined signal spectrums.
