Single-ended Liquid Level Module - LSP

The single-ended liquid level module LSP (Liquid-level -Single-ended-Pro) utilizes single-ended ground-referenced capacitance measurement principle, measuring changes in dielectric constant through a capacitive sensing chip. The module outputs capacitance values as digital signals, which are converted into liquid level height, etc. It can measure continuous or segmented liquid levels, moisture content, proximity, and other medium sensing. Widely used in water level, oil level, material level, moisture content detection, and proximity sensing. The module includes a microprocessor, embedded with capacitance-to-physical quantity conversion calculations, alarm detection algorithms, temperature compensation, information storage, calibration support, etc. It can be customized with I2C, 1-wire, and other digital protocols.

LSP has strong penetration capability, can penetrate 1-10mm non-metallic containers, effectively overcoming issues such as thick container walls, air gaps, or high viscosity of liquid media, accurately measuring capacitance changes. Its small size, designed with a compact unit principle, in a stamp-hole board format, facilitates customer integration into product circuits. Different capacitance ranges can be measured by adjusting the peripheral circuit. The module includes a high-precision external crystal oscillator for higher data acquisition accuracy and stability, combined with algorithm software to reduce interference and increase accuracy. LSP provides dual channels, capable of simultaneously detecting two ground-referenced electrodes.

I. Features of Single-ended Liquid Level Module - LSP:

Measurement method: Non-contact, can penetrate 1~10mm non-metallic containers, or contact type
Liquid level accuracy: Depending on the application such as measured object and electrode structure, high accuracy up to 1%
Capacitance measurement range: 0~150pF
Capacitance measurement accuracy: 1%
Capacitance measurement resolution: 0.5fF
Capacitance measurement time: 1-100ms (customizable based on acquisition requirements)
Average power consumption: 5.6mA@5V
Temperature characteristics
Temperature resolution: 15-bit ADC
Typical temperature measurement accuracy: ±3℃
Operating temperature range: -40℃~+85℃
Communication interface: I2C (1-wire customizable)
Operating voltage: 2.5V~5.5V
Dimensions: 13.5mm*13.5mm*2.5mm

II. Applications of Single-ended Liquid Level Module - LSP:

Water levelDetection

Oil levelDetection

Material levelDetection

Moisture content detection and proximity sensing