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Fire control water level display instrument Bargraph display control instrument Liquid level transmitter instrument Input 4-20MA

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Working principle The principle of static pressure measurement: When the liquid level transmitter to be measured at a certain depth in the liquid, the pressure sensor for liquid level of attack by the formula: P = P.G.H + Po Form in: P: the pressure of the transmitter to meet the pressure of Xiamen Jing Chuan input type liquid level meter Jiangsu run river input type liquid level meter P: the measured liquid density G: local gravity acceleration Po: atmospheric pressure on the liquid level H: transmitter into the depth of the liquid At the same time, the pressure of the liquid into the positive pressure chamber through the gas sensor of stainless steel, then vacuum cavity pressure sensor and Po on the surface of the sensor is connected to offset on the back of the Po, the sensors for pressure: P.G.H, obviously, by measuring the pressure of P, can get the level of depth Main technical index Measurement range: 1 ~ 110 meters (measurement range, please take a message after the shot, no message by the length of the cable as the range) Accuracy: 0.5% Operating temperature: -20 ~ 80 Output signal: second tier system 4 ~ 20mADC Power supply voltage: Standard 24VDC Not sensitive area: less than 1.0%FS Load capacity: 0-600 Relative humidity: less than 85% Protection level: IP68 (integrated non explosion proof junction box) Explosion proof mark: Exia II CT4-7 (integral non explosion proof junction box) Cable length: the choice of delivery, to lengthen 1 Mega 10 yuan. Can contact the owner Probe material: 304 stainless steel Typical application areas: The low level monitoring of the open liquid tank or the depth of the open water area or the level measurement of groundwater level measurement of wastewater treatment, water supply, chemical and pharmaceutical industry, constant pressure water supply system and other industries for the measurement and control of liquid level Working principle: The principle of static pressure measurement: When the input type liquid level transmitter into a certain depth in the measured liquid, pressure sensor for liquid level of attack by the formula: P = P.G.H + Po Form in: P: liquid level gauge is subject to the pressure of the liquid level gauge P: the measured liquid density G: local gravity acceleration Po: atmospheric pressure on the liquid level H: input liquid level transmitter into the depth of the liquid At the same time, the pressure of the liquid into the positive pressure chamber through the gas sensor of stainless steel, then vacuum cavity pressure sensor and Po on the surface of the sensor is connected to offset on the back of the Po, the sensors for pressure: P.G.H, obviously, by measuring the pressure of P, can get the level of depth. Proper installation Note on the use and installation of the input type liquid level transmitter: 1 liquid level transmitter transport, storage should be restored to the original packaging, stored in a cool, dry, ventilated warehouse. 2 the use of abnormal, should be turned off the power, stop using, to check 3 to connect the power supply should be strictly in accordance with the wiring instructions for connection. How to install the input type liquid level transmitter: Liquid level meter should be installed in the deep pool, still, usually around 45mm (inner diameter steel pipe with different height to play some small, smooth water into the tube) is fixed on the water, and then put into the tube type liquid level transmitter can be used in. The installation direction of the transmitter is vertical, and the input type installation position should be far away from the liquid inlet and outlet. In large vibration occasions, can be wire winding on the transmitter, the use of wire damper, so as not to pull off the cable. Measuring the flow or stirring the liquid level, usually the steel inner diameter is about 45mm (on the other side of different height of the liquid flow to play some holes to smooth water into the tube) is fixed on the water, and then put into the tube type liquid level transmitter can be used in. Debugging method Input type liquid level transmitter in the factory has been labeled according to nameplate range accurate correction, as long as the density of medium with nameplate requirements, generally do not need adjustment. But you need to adjust the range or zero, please adjust the following methods: 1, unscrew the protective cover, external standard 24VDC power supply and the current meter (requires more than 0.2% accuracy) can be adjusted 2, in the case of input liquid level transmitter without liquid, adjust the zero resistor, so that the output current 4mA 3, the input liquid level transmitter to the full range, adjust the full range resistor, so that the output current 20mA 4, repeat steps two or three times, until the signal is normal 5, please input 25%, 50%, 75% signal check input type liquid level transmitter error 6, for the non water medium, the input type liquid level transmitter calibration, should be based on the actual use of the pressure generated by the media density conversion. For example: when the medium density is 1.3, the calibration 1m measurement range to use 1.3m water level calibration 7, adjustment is completed, tighten the protective cover 8, input type liquid level transmitter calibration cycle is once a year [1]

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