ESL048 Digital Liquid Level Transmitter


ESL048 Digital Liquid Level Transmitter | Hydrostatic Level Probes

ESL048 line is liquid level transmitter, featuring high reliability, stability and accuracy, and RS485 digital output. The product is widely used for the measurements of gas and liquid, such as water, oil and light corrosive liquids. This product line adopts1Cr18Ni9Ti stainless steel construction and multiple pressure connections


  • Pressure type: Gauge/Seal gauge Pressure
  • Signal output: RS485 digital output
  • Range: 0~2…200mH2O
  • Accuracy: ±0.5%F.S
  • Stability: 0.2%F.S/Year
  • Operating temperature: -40℃~85℃
  • Power supply: 10~30V
  • Sensing: Diffused silicon/Piezoresistive ceramic sensor
  • OEM: Available
RangeOverloadPrecisionStabilityWorking TemperatureOutput SignalPower Supply
0~2…200mH2O1.5 times±0.5%F.S0.25%F.S/Y-40~85℃RS48510~30Vdc


Hydrologic monitoring | Constant pressure water supply | Tailwater elevation | Wastewater treatment | Water-saving irrigation |Diversion Project | Metallurgy& Chemical industry


The probe measures liquid levels, basing on a simple relationship between the height of the liquid column and the resulting hydrostatic pressure. The pressure measurement is carried out on the level of separating diaphragm of the immersed probe and is related to atmospheric pressure through a capillary in the cable.

The active sensing element is a piezoresistant silicon sensor separated from the medium by an isolating diaphragm. The electronic amplifier, which words in combination with the sensor, and is meat to standardize the signal, is additionally equipped with an overvoltage protection circuit, which protects the probe from damage caused by induced interference from atmospheric discharges or from associated heavy current engineering appliance.

ESL048 Digital Liquid Level Transmitter drawing

Click to download

  • General Instruction and Datasheet-ESL048 GID-3-EV01