Capacitance Type Level Switch

About Capacitance Type Level Switch

Capacitance Type Level Sensor

• A capacitance is formed between the probe and the vessel wall
• .As the level of the measuring medium rises or falls capacitance
• between the probe and vessel wall changes proportionately.
• high frequency sine wave is applied between the probe and
• tank wall. A change of medium level will induce a change in the
• current of the applied sine wave. From when the
• capacitance in the vessel increase, impedance will decrease
• and current will increase and vice-versa. (Z=Resistance,
• C=Capacitance, F= Frequency)
• Head mounted electronics converts the capacitance variation to 4-20mA signal for long distance
• transmission. It is provided with trimpots for SPAN and ZERO adjustments. With no moving parts
• it is free from wear and tear, rugged and robust in construction. No dead zone like float based instruments.
• It must be ensured that the probe is parallel to the tank wall throughout its length.

Salient Features :

• Two parts isolated design-Electronic Module can be easily separated without removing the probe and
• without necessity of process shut down. So module replacement is easy.
• No moving parts, it is rugged and robust instrument.
• No dead band or dead zone like float based/ultrasonic instruments.
• Suitable for operation from 12 to 32 VDC, with reverse polarity protection.
• Standard output 4-20mA.Voltage output of 0-10 optional. (For 12 V input supply output 0-5V and with 24 V supply output 0-10V).
• Plug and play with reference probe and rod.
• Remote electronics as option with 2 Metre long coaxial cable.
• Standard enclosure weather proof-cast Aluminium or Nylon 66. Flame proof as optional.
• Trim-Pots for span and zero adjustment.
• Our new introduction is Micro processor based Blind Transmitter (available only in weather proof version) with Push Button Teach-in facility and damping arrangement.

Versatile Performance Across Applications

Designed to handle solids, liquids, and slurries, this level switch brings dependable control to diverse industrial operations. The stainless steel probe ensures excellent compatibility, while the customizable mounting and length cater to unique installation requirements. Its ability to function in temperatures from -20C to +80C increases adaptability.


Reliable and Safe Operation

Built with safety in mind, the switch offers short circuit and overload protection. The enclosure, crafted from rugged ABS and polycarbonate, along with IP65 rating, ensures longevity even in harsh environments. With a mechanical life exceeding one million operations, it provides sustained and worry-free service.


Convenient Adjustment and Monitoring

The device features externally adjustable switching points, allowing easy calibration without dismantling. LED indication delivers clear visual status, improving maintenance efficiency. The relay output (SPST or DPDT) and quick response time support immediate and accurate automation decisions.