Price of input type liquid level transmitter

Price of input type liquid level transmitter

correct installation

Precautions for the use and installation of input type liquid level transmitters:

When transporting and storing liquid level transmitters, they should be returned to their original packaging and stored in a cool, dry, and ventilated warehouse.

If any abnormalities are found during use, the power should be turned off, the use should be stopped, and a check should be conducted

3. When connecting to the power supply, strictly follow the wiring instructions.

Price of input type liquid level transmitterHow to install:

When the liquid level gauge should be installed in a stationary deep well or water tank, a steel pipe with an inner diameter of about 45mm (with several small holes at different heights to allow water to enter the pipe smoothly) is usually fixed in the water, and then the immersion type liquid level transmitter can be put into the steel pipe for use. The installation direction of the transmitter is vertical, and the installation position of the immersion type should be far away from the liquid inlet and outlet and the agitator. In situations where there is significant vibration, steel wire can be wrapped around the transmitter to reduce vibration and prevent cable breakage. When measuring the liquid level of flowing or stirred liquids, a steel pipe with an inner diameter of about 45mm is usually drilled with several small holes at different heights on the opposite side of the liquid flow direction.

How to solve the anti-interference problem of input type liquid level transmitter

The immersion type liquid level transmitter has good stability, high accuracy, and is quite easy to install and use. In daily use, it will be influenced by many factors. To enable users to better use the input type liquid level transmitter and provide the following solutions for consumers.

Firstly, everyone used traditional methods to solve the problem but did not achieve good results. For this traditional method, which is to measure the liquid level of a small water tank on the measuring device, the pressure transmitter is installed at the bottom of the water tank, and the sensor wire is well wired. But there is a problem, when there is water flowing down from the top of the water tank, it will cause the pressure below to swing significantly. From the analysis of the data, taking one second to extract a data, the displayed swing is relatively large, and there are correct values among them; Taking an average of 10ms is not effective. How to solve it?

Solution to anti-interference problem of input type liquid level transmitter:

Avoid direct pressure impact on the probe when the liquid flows downwards, or use other objects to block the direct pressure impact when the liquid flows downwards;

Install the water inlet into a shower style, cut off a large stream of water into a small stream and spray it out, which has a good effect; Bend the inlet pipe slightly upwards, so that the water will first be thrown into the air and then fall when it comes out, reducing direct impact (converting kinetic energy into potential energy).

debugging method

The input type liquid level transmitter has been accurately calibrated according to the range indicated on the nameplate at the factory. As long as the density and other parameters of the medium meet the requirements of the nameplate, there is generally no need to adjust them. However, it is necessary to adjust the range or zero position. Please calibrate according to the following method:
1. Unscrew the protective cover and connect it to a standard 24VDC power supply and ammeter (requiring an accuracy of 0.2% or higher) for adjustment
2. In the absence of liquid in the input type liquid level transmitter, adjust the zero point resistor to output a current of 4mA
3. Add liquid to the full range of the input type liquid level transmitter, adjust the full range resistor to output a current of 20mA
4. Repeat the above steps two or three times until the signal is normal
5. Please input signals of 25%, 50%, and 75% respectively to verify the error of the input type liquid level transmitter
6. For non-aqueous media, when calibrating the input level transmitter with water, the pressure generated by the actual density of the medium used should be converted. For example, when the medium density is 1.3, a 1.3m water level should be used to calibrate the 1m range
7. Adjustment completed, tighten the protective cover
8. The calibration cycle for the input type liquid level transmitter is once a year

Typical application areas:

The input type liquid level transmitter is widely used for liquid level measurement and control in rivers, groundwater levels, reservoirs, water towers, and containers. It is a sensor that measures the pressure of a liquid and converts it into a liquid level. The principle is that the measured liquid static pressure is proportional to the height of the liquid. The input type liquid level transmitter can be divided into two types: whether it needs to have a display and whether it needs remote transmission. The sensor core usually adopts diffused silicon piezoresistive, ceramic capacitor or sapphire, which has the characteristics of high measurement accuracy, compact structure, and good stability.
When choosing an input type liquid level transmitter, the application scenario should be considered first. If it is used in a corrosive environment, a high protection level and anti-corrosion sensor should be selected. Attention should also be paid to the size of the liquid level sensor range and the requirements of the interface. The input type transmission sensor is widely used in water plants, sewage treatment plants, urban water supply, high-rise water tanks, wells, mines, industrial water tanks, water tanks, oil tanks, oil tanks, hydrogeology, reservoirs, rivers, oceans and other occasions for liquid level measurement. The circuit adopts anti-interference signal isolation amplification, cut-off frequency interference design (strong anti-interference ability, lightning protection), overvoltage protection, current limiting protection, impact resistance, anti-corrosion design, etc., and is recognized by manufacturers.