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The Contrinex Basic range consists of cylindrical and cubic devices. Cylindrical devices are available in 4-wire M12, M18 and M30 standard sizes. All 3 sizes may have PNP or NPN changeover outputs, while M30 devices are also available with 2-wire switching outputs (AC/DC, NO). Housings are either in durable polyphenylene oxide (PPO) or stainless steel (V2A AISI 304) with a PPO sensing face.

CONTRINEX Basic Capacitive Sensors for Any Target Material Distributors


Sensor connection is by means of cable or an integral connector. All device types are available in embeddable versions, allowing detection through container walls. In addition, M18 and M30-sized devices are also available in non-embeddable versions that permit longer operating distances. Cubic devices are available, sized 32 x 34 mm in a PVC housing with 3-wire connection, or 120 x 80 mm in a PBT housing with 4-wire connection.

With operating distances from 0.5 mm to 25 mm, Contrinex Basic range capacitive sensors are the cost effective solution for level sensing tasks in the plastics industry, in particular for the level control of granulates in feeders, pipes or silos.

Capacitive sensors are used in machines, installations and vehicles for monitoring the levels of liquids, pastes and bulk material. These materials can even be detected through non-metallic dividing walls. In addition, capacitive sensors are suitable as limit switches, contact-free position switches, for monitoring and positioning, as pulse generators for counting purposes, distance and speed measurement, and much more.

If you are looking for CONTRINEX Capacitive Basic Switches, please call us on (844) 331-9380 or email us at we will do our best to help you find the CONTRINEX M12 sensors that you are looking for at the most competitive prices possible. If you are searching for CONTRINEX M18 sensor technical information (data-sheets) please use the datasheets or product selection guide page links.


  • Synthetic housings
  • For the detection of all kind of materials
  • Adjustable operating distances
  • Easy potentiometer set-up
  • 4-wire devices

The electrodes at the device's sensing face permit the sensor to detect the dielectric conditions in its close surroundings. Depending on the distance between the target (or material) to be detected and the capacitive sensor, the capacitance in the measuring zone changes. The capacitance is dependent not only on the above-mentioned distance, but also on the dielectric constant (er) of the target, as well as its shape. As the sensor approaches the target, the capacitance increases. When the set threshold value is reached, the transistor-oscillator is activated. By means of the built-in electronics, a changeable, electrical current is generated which, depending on the execution of the device, is available as a linear current signal or as a binary voltage at the output.

Using capacitive sensors, electronic circuits and PLCs, as well as relays or contactors can be controlled directly. Capacitive sensors are enclosed in synthetic or metal housings and potted in epoxy resin. They are, moreover, insensitive to dirt and shock.

Contrinex capacitive sensors deliver a reliable solution for all kinds of level sensing tasks. They are suitable for detection and position monitoring with virtually any target material. The program includes sensors in cylindrical (M12, M18 M30 or Ø 26/G1) or cubic form. Two ranges are offered: a cost effective Basic range, which includes AC/DC output switching, and a High performance range for difficult sensing tasks.

Our industrial factory automation supplies distributors warehouse in Boise, Idaho stocks some CONTRINEX products enabling us to further assist you in finding the correct CONTRINEX M30 sensors for your application in the USA, Canada and Mexico. Whether we have CONTRINEX basic capacitive sensors in stock in Boise, Idaho or need to ship direct from CONTRINEX to any USA cities; Clearwater Tech can get CONTRINEX M30 switches to you fast and save you money! It will be very helpful if you have the CONTRINEX M18 switches part numbers ready, then our sales representatives can provide you with a pricing and availability quote for CONTRINEX cylindrical sensors that you are looking for in seconds. If you do not have the part numbers for CONTRINEX cubic switches, our application engineers will be able to help you figure out the part numbers and get the price quote to you as soon as possible.

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TURCK Sensors

Non-Shielded (Nonembeddable) units require a metal free area around the sensing face. Because of possible interference of the electromagnetic fields generated by the oscillators, minimum spacing is required between adjacent or opposing sensors. It is good engineering practice to mount sensors horizontally or with the sensing face looking down. Embeddable (shielded) units may be safely flush-mounted in metal.

ABB Relays

ABB Low Voltage 3-phase monitoring relays CM-PAS.x1 monitor the phase parameters phase sequence, phase failure as well as phase unbalance. All devices are available with two different terminal versions. You can choose between the proven screw connection technology (double-chamber cage connection terminals) and the completely tool-free Easy Connect Technology (push-in terminals). Both the Easy Connect Technology with push-in