Hydrostatic Pressure Level Transmitter

ECX Hydrostatic Pressure

The ECX hydrostatic pressure level transmitter uses piezoresistive technology and a Wheatstone bridge circuit to measure the level of liquids in various tanks and other types of vessels and provide a variable 4-20mA output.

The ECX hydrostatic pressure level transmitter consists of a piezo resistive sensor. The Wheatstone bridge directly measures head pressure exerted on the diaphragm of the EC level transmitter.

When the pressure is exerted on the diaphragm, as a result of the liquid level. The pressure is transferred to the Wheatstone bridge electrical circuit through silicon oil contained in the EC sensing unit. This creates a differential voltage, which is then amplified to create a variable 4-20mA output that varies as a result of the changing liquid level.

In addition, a pressure transducer is available for measuring pressure in tanks or pipes and producing a variable 4-20mA output.

A differential pressure transmitter calculates level by measuring the differential pressure between the liquid and the gaseous phases of the fluid inside a closed tank. For precise calculations, important factors include Geometry of the tank (horizontal or vertical, shapes of various lids and bottoms.



  • Extension cable unit can measure deep wells or reservoirs
  • Tank level measurement and control
  • PLC or DCS input for level control functions
  • Pressure measurement of gas or liquid (EC1500)
  • EC1100 is a liquid measurement device which can be used in a variety of environments, including water agitation environments.
  • The Standard Flange Type, EC1210 can be used in liquid & gas pressure measurement environments (i.e., mildly corrosive environments).
  • EC1300~1320 type is suitable for measurement of very deep water, such as measurement of reservoirs.
  • EC1500 is suitable for pressure measurement or control devices such as those found in hydraulic and pneumatic machines.
  • EC1200 can withstand high temperature liquid environment.


  • Water treatment and distribution
  • Chemical
  • Many others
  • Completely submersible liquid level transmitter
  • Wide variety of sensors, e.g. extension tube or flexible cable, standard or high temperature
  • Measuring range up to 328ft (100m)
  • 4-20mA output, 2-wire loop powered
  • Pressure transducer also available

Pressure Range: 0.1, 0.2, 0.4, 1, 2, 5, 10 Bar

Measuring Range: 0~1M,0~2M,0~4M,0~10M, 0~20M,0~50M,0~100M (assumed with the water S.G:1)

Linearity: 0.3%FS

Supply Voltage: 13~36 Vdc

Output: 4-20mA

Wetted Material: SUS 304, SUS316