Tube Sensor TLS 100

The capacitive level sensor BEDIA NR 150 is suitable for liquids with low relative dielectric constant εr 1,8 … 6 (ref. εr 2,1). It has a MIN/MAX selector switch and the functions for MIN or MAX monitoring as well as other properties (output signal LSS or HSS, response delay etc.) are factory pre-set. The switch point is adjustable by means of a teach-in momentary switch.

The capacitive level sensor NR 160 is designed to monitor liquids and powders with high relative dielectric constant εr 35 … 85. The functions for MIN or MAX monitoring as well as other properties (output signal LSS or HSS, response delay etc.) are factory pre-set. The switch point is adjustable by means of a teach-in momentary switch.

The NR 260 is a capacitive level sensor for monitoring liquids. It is designed for use in fuel cells. The material is also suited to applications in the chemical industry for monitoring aggressive media. The functions for MIN or MAX monitoring as well as other properties (output signal LSS or HSS, response delay etc.) are factory pre-set. The Main Features of the NR 260 are high medium resistance of materials enamel, Hastelloy C4 2.4610 and stainless steel 1.4571 high protection class IP67 with connector short-circuit proof switching output 1 A, high side or low side switch MAX sensor or MIN sensor switch point factory pre-set for the following media: de-ionised water (conductivity < 4,2 μS/cm): 28 mm ± 2 mm tap water (conductivity ≈ 300 μS/cm): 22 mm ± 2 mm other media upon request; switch point adjustment via programmable interface on request

Areas of Application and Advantages BEDIA CLS 10 stands for special versions of our well-proven CLS 40 series for heavy duty applications. Currently, the BEDIA CLS 10 series includes a variety of sensors, which are compatible replacement parts for level switches from Cooper Standard and Robert Shaw which are obsolete nowadays – and this in well proven BEDIA quality. This also includes sensors with 2 complementary CMOS outputs. It should be emphasized that the water sensors with two complementary outputs can be operated with a supply voltage of 4.75 V DC – 32 V DC. Operating Principle The function of the sensor is based on the capacitive principle. It detects the change in capacitance that arises when an electrode surrounded by air is immersed into a liquid medium. This change in capacitance at the electrode of the sensor excites an oscillator, causing it to oscillate (at a frequency of approx. 600 kHz). Then this signal is processed by a microprocessor-based evaluation circuit.