static pressuresubmersible level gauge,Also known as the intelligent input liquid level transmission controller, it is based on the principle that the liquid static pressure is proportional to the liquid height. It uses the resistance effect of diffused silicon or ceramic sensitive components, adds microelectronic smart chips, converts static pressure into electrical signals, and converts it into a 4-20ma standard current signal through temperature compensation and linear correction to output the liquid level sensor. It uses an intelligent transmitter and a human-machine friendly interface to freely set parameter values ​​and alarm output. It can realize five pairs of relay control output points and also has functions such as LED display.

Functional features of static pressure input liquid level gauge:

1. Solid structure, long working life;

2. From water to sewage, from oil to high-viscosity liquids, it can be measured with high precision without being affected by medium foaming and deposition;

3. Equipped with multi-purpose mounting brackets (such as single flange/double flange, etc.), easy to install and use;

4. Good anti-interference and lightning protection capabilities;

5. Power supply reverse polarity protection and overload current limiting protection;

6. New materials are not prone to fatigue wear and have strong resistance to vibration, impact and overload.

Advantages of static pressure input level gauge:

The static pressure input level gauge has a simple structure, no moving or elastic components, simple operation, convenient debugging, high reliability of measurement accuracy, easy installation, and low maintenance cost; the whole is an all-electronic structure, the front end uses a silicone oil pressure resistance sensor, and the measurement sensor wires are connected with air conduit cables. The output signal is amplified by a high-precision, low-temperature floating amplifier, input to a high-precision A/D converter, and converted into a digital signal that can be processed by a microprocessor.

The installation of hydrostatic liquid level measuring instruments should comply with the following regulations:

1. The distance between the instrument connector (nozzle) of the single-flange input-type liquid level meter and the bottom of the tank should be greater than 300mm, and it should be easy to maintain.

2. The installation height of the double-flange remote differential pressure level gauge shall not be higher than the lower pressure flange port on the container, and the zero point and negative migration must be accurately calculated: use angle steel or steel pipe to fix the conductive capillary tube, and take insulation measures.

3. The liquid level installation of the differential pressure transmitter should meet the following requirements:

A) The distance between the upper and lower pressure instrument joints (pipe openings) should be greater than the required measurement range; the distance between the lower pressure instrument joints (pipe openings) and the bottom of the tank should not be less than 200mm, avoiding the liquid outlet: the upper pressure instrument joints (pipe openings) should avoid the gas phase spray inlet, and anti-collision measures should not be taken;

B) When measuring the liquid level of volatile or condensing media, an isolation tank should be added to the negative pressure side (gas phase) or both positive and negative pressure sides to accurately calculate the zero point and negative migration;

C) When measuring the liquid level of steam packaging in steam boilers, a temperature self-compensating balance container should be installed and the pressure guiding pipe should be insulated.