Anhui Tiankang Liquid Level Gauge

Anhui Tiankang Liquid Level GaugeThe 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: Ρ=ρ. g.H+Po

Where:

P: Pressure exerted on the liquid level of the transmitter

ρ: Density of the tested liquid

g: Local gravity acceleration

Po: Atmospheric pressure on the liquid surface

H: Depth of liquid input into the transmitter

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 the atmospheric pressure Po 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: ρ g. H. Obviously, by measuring the pressure P, the depth of the liquid level can be obtained.

Anhui Tiankang Liquid Level GaugeofPrecautions

The correct selection of liquid level gauge is necessary to ensure its better use. What type of liquid level gauge should be selected based on the physical and chemical properties of the measured fluid medium? What are the diameter, flow range, lining material, electrode material, and output current of the liquid level gauge? Can adapt to the properties of the measured fluid and the requirements of flow measurement.

1. Precision functional inspection

The accuracy level and function of the instrument are selected based on measurement requirements and usage scenarios to achieve cost-effectiveness. For example, in situations such as trade settlement, product handover, and energy measurement, higher accuracy levels such as 1.0, 0.5, or higher should be selected; For process control applications, choose different accuracy levels according to control requirements; In some cases where only the process flow rate needs to be detected without precise control and measurement, a slightly lower accuracy level, such as 1.5, 2.5, or even 4.0, can be selected. In this case, a low-cost plug-in level gauge can be used.

2. Measurable medium

When measuring medium flow rate, instrument range, and caliber for general medium measurement, the full flow rate of the level gauge can be selected within the range of 0.5-12m/s for measuring medium flow rate, which is relatively wide. The selection of instrument specifications (caliber) may not necessarily be the same as the process pipeline, and should be determined based on whether the measured flow range is within the flow rate range. That is, when the pipeline flow rate is too low to meet the requirements of the flow instrument or the measurement accuracy cannot be guaranteed at this flow rate, the instrument port diameter needs to be reduced to increase the flow rate inside the pipeline and obtain satisfactory measurement results.

Product Features

Good stability, with a long-term stability of 0.1% FS/year at full and zero positions. Within the compensation temperature range of 0-70 ℃, the temperature drift is less than 0.1% FS, and within the entire allowable operating temperature range, it is less than 0.3% 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 current to within 35MA.

Solid state structure, no movable parts, high reliability, long service life. Easy to install, simple structure, economical and durable.