Differential fluid level module - LDM

Product Specification

Differential liquid level module LDM (Liquid-level-Differential-Mini) uses the principle of differential capacitance measurement to measure the change of capacitor sensor chip, module digital signal output capacitor value, converted into liquid level height, can measure continuous liquid level or segmented liquid level and other media sensing, widely used in water level, oil level, material level and other detection. The module includes microprocessing devices, embedded capacitance and physical quantity conversion calculation, alarm detection algorithm, temperature compensation, information storage, calibration support, etc., and digital protocols such as I2C and 1-wire can be customized.

LDM can penetrate 1 to 10 mm non-metallic containers, effectively overcome the thick container wall, or measure air interval, high viscosity of liquid medium, accurately measure the capacitor change; small size, minimum unit principle design circuit, stamp board, convenient for customers to integrate into the product circuit; can be measured by adjusting the peripheral circuit.

Function：

Measurement method: non-contact can penetrate 1~10mm non-metal container, or contact type

Liquid level accuracy: according to the measured object and electrode structure, the highest accuracy is 1%

Capacitance measurement range: 0 ~ 100 pF (default range, other range can be customized)

Capacitance measurement accuracy: 1%

Capacitor measurement resolution: 0.001 pF

Capacitance measurement time: 50ms (customized to acquisition requirements)

Working power consumption: 3 mA @ 5 V

Temperature resolution: 12bit ADC

Typical temperature measurement accuracy: ± 3℃

Range of operating temperature: -40℃ ~ + 85℃

Application：

Stage

Oil liquid level

Material position