Page 8 of catalogue Capacitive level measuring systems of Rechner Industrie-Elektronik GmbH

SERIES

• Analogue

Measurement

Level Control systems for analogue measurements. The capacitive measurements systems of the True Level series are designed for analogue measurement. The system comprises: Filling level probe KFS-1-... Evaluation unit KFA-1-... The analogue level measurement automatically makes a compensation for the changes in the dielectric constant of the filling material, which is very advantageous for applications with changing products. For the DC-compensation (DC = dielectric constant) a reference measurement is made. For that reason a reference area is in the tip of the probe. The probes. KFS-1-.../ are available from 400 mm up to 2000 mm in length. The position and the length of the measuring area are user-definable within the possible effective range and therefore it can be determined for optimal matching of each application. The available evaluation units are • Analogue output KFA-1-...-UL-KL • Analogue output KFA-1-...-IL4-KL • Analogue output KFA-1-...-FL-KL = = = Voltage 0...10 V DC Current 4...20 mA Frequency 0...10 kHz

The adjustment of the measurement can be made in the empty-condition and it is easy due to adjustment-aids. The effective direction of that output signal is programmable by means of a jumper, and with an adjustable damper slop motions can be eliminated. Additionally a safety relay output is available, which is activated as soon as the filling level falls below the reference-range at the probe tip, thus preventing a total emptying of the container. In addition an overfill safety output is available on request, which also has a relay output and it works independently from the analogue measurement. In this case the probe contains a further measuring electrode at the desired limit area.

Probes with process connection
The analogue rod-probes series is completed with probes with process-connection with different adaptation possibilities: Process connection G1“ Triclamp Varivent Milk-tube-screwing For further information, please see the accessories chapter. The evaluation electronics remains separate. For the possible model variations please see the type code.
All specifications are subject to change without notice. (10/2008)

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RECHNER Industrie-Elektronik GmbH • Gaußstraße 8-10 • D-68623 Lampertheim • Tel. (0 62 06) 50 07-0 • Fax (0 62 06) 50 07-36 • e-mail: info@rechner-Sensors.de • www.rechner-sensors.com