⎝⎛星力捕鱼⎞⎠

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Address: Xiongyi, Jinhe Road, Jinhu County, Jiangsu Province
Lunan
Phone: 0517-86900901
0517-86900921
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Postcode: 211600
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Industry Information
Drop-in liquid level transmitter for measuring liquid level
2012-2-28 9:41:49

Using the principle of static pressure measurement: When the liquid level transmitter is put into a certain depth in the liquid to be measured, the pressure on the sensor's liquid surface is: P = ρ .gH + Po where: P: the transmitter's liquid Pressure input type level gauge
[1] ρ: Measured liquid density g: Local gravity acceleration Po: Atmospheric pressure H: Transmitter depth of the liquid at the same time, the pressure of the liquid is introduced into the positive pressure cavity of the sensor through the gas-conducting stainless steel, and then the liquid The atmospheric pressure Po on the surface is connected to the negative pressure cavity of the sensor to offset the Po on the back of the sensor, so that the pressure measured by the sensor is: ρ.gH. Obviously, by measuring the pressure P, the liquid level depth can be obtained.
主要技术指标测量范围:0.3~110m 精度:0.2、0.5、1.0级工作温度:-20~80℃ 输出信号:二线制4~20mADC 电源电压:标准24VDC(12~36VDC) 不灵敏区:≤±1.0%FS 负载能力:0-600Ω 相对温度:≤85% 防护等级:IP68 防爆标志:ExiaⅡCT4-7 Main technical indicators of input type liquid level transmitters Measurement range: 0.3 ~ 110m Accuracy: Class 0.2, 0.5, 1.0 Working temperature: -20 ~ 80 ℃ Output signal: Two-wire system 4 ~ 20m ADC Power supply voltage: Standard 24VDC (12 ~ 36VDC) Insensitive area: ≤ ± 1.0% FS Load capacity: 0-600Ω Relative temperature: ≤85% Protection level: IP68 Explosion-proof mark: ExiaⅡCT4-7

Features ★ All stainless steel structure design, small size and light weight;
★ Adopt digital temperature compensation and non-linear correction technology;
★ With RS485 communication interface or HART communication protocol (optional);
★ LED on-site display is optional;
★ Anti-electromagnetic / radio frequency interference, anti-vibration;
★ With anti-blocking filter to prevent impurities from damaging the diaphragm;


是一款全不锈钢设计全密封潜入式智能化液位测量仪表。 The submerged liquid level transmitter is a fully stainless steel design and fully sealed submersible intelligent liquid level measuring instrument. This product uses high stability and high reliability ceramic piezoresistive pressure sensor and high precision intelligent transmitter processing circuit. It adopts precise digital temperature compensation technology and nonlinear correction technology. It is a high precision liquid level measurement product. The waterproof cable is hermetically connected to the shell, and the vent pipe is in the cable, which can be used in liquid for a long time. The integrated structure and standardized output signals provide convenience for field use and automatic control. This product works in a two-wire system. It is small in size, light in weight, easy to install and easy to use. It is mainly used in urban water supply and drainage, water treatment plants, reservoirs, rivers, oceans, oil storage tanks, and petroleum, chemical, power and other departments. Level measurement, the measured medium can be water, oil, acid, alkaline and viscous liquid. The meter outputs a two-wire 4 ~ 20mADC standard current signal. It has the advantages of advanced technology, high precision, stable and reliable quality, and convenient installation and use. It is an ideal level meter in a process detection and control system.

working principle:

是通过测量液体高度而产生的静压力来测定液体液位的。 The submerged level transmitter measures the liquid level by measuring the static pressure generated by the liquid height. When the sensor part of the liquid level transmitter is put into the liquid medium, the sensor converts the static pressure of the liquid into a voltage signal, and the voltage signal is amplified and converted into a 4-20mADC standard current signal output.

Technical Parameters

Measuring range: 0 ~ 350m

Output signal: 4 ~ 20mADC two-wire system

Accuracy: 0.5 level, 0.2 level, can provide 0.1 level (optional)

Medium temperature: -40 ~ 100 ℃

Ambient temperature: -30 ~ 80 ℃

Influence of ambient temperature: within the range of temperature compensation, the change of zero position ≤ ± 0.3% / 10 ℃

Range change: ≤ ± 0.2% / 10 ℃

Power supply voltage: 24VDC, according to the load characteristics, the power supply voltage can reach 12 ~ 40VDC

Influence of power supply voltage: within the specified voltage range, the output conversion amount is <0.01% / 1V

Impact of radio frequency interference: When the transmitter is normally installed and the cover is tight, the interference to the radio frequency between 27 ~ 1000MHz and the field strength 30V / m, the output change is less than 0.1%

Long-term stability: ≤ ± 0.3% (6 months)

Probe case material: 1Cr18Ni9Ti

Cable Sheath Material: Polyethylene or Polyamide

Sealing material: Nitrile rubber

Measurement medium: Liquid medium compatible with the above materials

Explosion-proof mark: intrinsically safe type: Ex ib ⅡCT4 ~ T6

Flameproof: Ex d ⅡBT4

Shell explosion-proof grade: IP6