Nuoying Automation NH-93420 material level transmitter

Good stability and high precision.

It has a compact structure and can be directly put into the measured medium to measure the liquid level. It is very convenient to install and use.

Solid structure,no moving parts,high reliability and service life. It can carry out high-precision measurements from water,oil to pastes with higher viscosity,and is not affected by bubbling,sedimentation and electrical properties of the measured medium.

Wide range of temperature compensation.

It has power supply reverse polarity protection and overload current limiting protection to prevent lightning strikes and radio frequency interference.

The level transmitter consists of a special gas cable with integrated capillary hose,a pressure-resistant connection and a probe. The probe structure of the submersible level gauge is a stainless steel core with a diaphragm at the bottom and is covered by a perforated plastic shell. Liquid level measurement is actually the difference between the liquid static pressure on the probe and the actual atmospheric pressure. The ceramic sensor (attached to the stainless steel film) and electronic components convert the pressure difference into a 4~20mA output signal.

When the hydrostatic liquid level transmitter is put into a certain depth of the liquid to be measured,the pressure formula on the sensor liquid level is: PA=ρ·g·h + Po,and the liquid level formula is obtained: h = PA- Po/ρ •g

At the same time,the pressure of the liquid is introduced into the positive pressure chamber of the sensor through the gas- stainless steel,and then the atmospheric pressure on the liquid surface is connected to the negative pressure chamber of the sensor to offset the Po on the back of the sensor,so that the pressure measured by the sensor is: PA-Po =ρ·g·h

If the liquid density is uniform,the static pressure difference is proportional to the liquid level.