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『Liquid level flowmeter』Related information(clamp on meter|electromagnetic meter|venturi meterrotameter|orifice meter|ultrasonic flow meter|mass flow meter|coriolis mass flow meter|coriolis flow meter|magnetic flow meter|magmeter flow meter|magflow flow meter|mag meter flow meter|electromagnetic flow meter|vortex flow meter|turbine flow meter|thermal mass flow meter|thermal flow meter|rotameter flow meter)
1. How to adjust the water tank level flowmeter? The adjustment method of the water tank level flowmeter varies depending on the type and steps, and the core is to calibrate the zero point and full range. 1. Installation inspection of ultrasonic liquid level flowmeter: Ensure that the sensor is installed vertically, avoiding obstacles and water flow impact points. Power on preheating: Connect the power supply and preheat for 15-30 minutes to put the instrument into a stable state. Parameter setting: • Range setting: Set the range based on the actual height of the water tank (e.g. 0-5 meters). • Zero point calibration: When the water tank is empty, perform zero point calibration in the menu to make the display and Qin family values 0. Full range calibration: After the water tank is filled, perform full range calibration to make the displayed value consistent with the actual liquid level. Signal output adjustment: Set the correspondence between 4-20mA output (such as 4mA corresponding to 0 liquid level, 20mA corresponding to full liquid level). Stability adjustment: Adjust through time constant or filtering function to avoid frequent fluctuations in display values
2. Installation inspection and zero position adjustment of magnetic flap level gauge: Ensure that the level gauge is installed vertically and the connecting pipe valve is open. When the water tank is empty, manually adjust the magnetic flap display to zero position. Upper and lower limit settings: If equipped with a switch output function, the alarm value can be set by adjusting the switch position (such as high or low alarm)
3. Installation and zero calibration of pressure level gauge: The sensor is installed at the bottom of the water tank to en
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2. The difference between differential pressure flowmeter and differential pressure level gauge
One is to measure flow rate (mainly gas mill flow rate), and the other is to measure liquid level.
. The differential pressure flow measurement method usually requires a signal square root processing unit. Differential pressure transmitters (differential pressure flow gauges) specifically designed for flow measurement come with square root function and small signal cutoff function required for differential pressure flow measurement methods. Differential pressure transmitters (differential pressure level gauges) specifically designed for liquid level measurement do not require square root function. At the same time, its installation method is suitable for direct installation under the equipment for liquid level measurement. Both of these transmitters are essentially differential pressure transmitters. Some manufacturers differentiate by model of differential pressure transmitters. Also known as "differential pressure transmitter (with square root function)" and "flange mounted differential pressure transmitter"3. Reasons and preventive measures for high liquid level at the outlet of open channel flow meters
High liquid level at the outlet of open channel flow meters is usually caused by sudden flow increase, channel blockage, downstream obstruction, or instrument failure, with