Anti corrosion liquid level transmitter

XH-500The series anti-corrosion input type liquid level transmitter is based on the principle that the measured liquid static pressure is proportional to the height of the liquid. It uses the pressure resistance effect of an isolated diffusion silicon sensitive element to convert the static pressure into an electrical signal. After temperature compensation and linear correction, it is converted into a standard electrical signal (usually4～20mA）.

anticorrosionInput type liquid level transmitterThe working principle of

Principle of static pressure measurement:

When the liquid level transmitter is inserted into a certain depth of the measured liquid, the pressure formula on the sensor facing the liquid level is:P = ρ.g.H + Po

Where:

PPressure exerted on the liquid surface of the transmitter

ρDensity of the tested liquid

gLocal gravity acceleration

PoAtmospheric pressure on the liquid surface

HDepth of immersion of the transmitter into the liquid

At the same time, the pressure of the liquid is introduced into the positive pressure chamber of the sensor through gas guiding stainless steel, and then the atmospheric pressure on the liquid surface is adjustedPoConnected to the negative pressure chamber of the sensor to counteract the pressure on the back of the sensorPoMake the sensor measure the pressure as follows:ρ .g.HObviously,By measuring pressurePYou can obtain the depth of the liquid level.

Functional characteristics of anti-corrosion input type liquid level transmitter

Good stability, with long-term stability at full load and zero position0.2%FS/Year. Compensating for temperature 0 ～ 70 Within the temperature range of ℃, the temperature drift is below0.2%FSWithin the entire allowable working temperature range, below0.5%FS.

◆ Equipped with reverse protection and current limiting protection circuits, the transmitter will not be damaged if the positive and negative poles are reversed during installation. In case of abnormalities, the transmitter will automatically limit the current35mAWithin.

Solid state structure, no movable parts, high reliability, long service life.

Easy installation, simple structure, economical and durable.

Main technical parameters of anti-corrosion input type liquid level transmitter:

Measuring range:0-0.1Mi~0-35rice

The maximum overload: Not exceeding the length of the pipe1.5times

Measurement form: Balance hood

Accuracy level:0.5%F · S

Power supply voltage:24VDC

Load resistance:≤ 500 Ω

Measurement medium: Various liquids

Long term stability:± 0.2% F · S/year

Relative humidity of the environment: 0 ～95%

Compensation temperature: 0 ～ 70 ℃

Operating Temperature -40 ～240℃ The highest temperature can be achieved 350 Degree (customized)

Structural features:

Shell: Die cast alloy aluminum

Main structural material: １Cr18Ni9Ti

Electrical interface:M20×1.5

Debugging method of anti-corrosion input type liquid level transmitter

Unscrew the protective cover to see the zeroing and full range resistors, external standard power supply, and ammeter (0) . 2 or more poles) can be adjusted, the steps are as follows:

◆ In the absence of liquid in the transmitter, adjust the zero point resistor to output a current of 4mＡ，

Add liquid to the transmitter to full range, adjust the full range resistor to output a current of 20mＡ，

Repeat the above steps two or three times until the signal is normal.

◆ After adjustment, tighten the protective cover.