Product Code: WH-UHZ Series
Product Name:Selection of WH-UHZ series magnetic flap level gauge
Product Category:Magnetic flap level gauge

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1、 The basic principle of magnetic flap level gauge operation:

Magnetic flap level gaugeIt works based on the principles of buoyancy and magnetic coupling. When the liquid level in the tested container rises or falls, the float in the main tube of the magnetic flap level gauge also rises or falls accordingly. The permanent magnetic steel inside the float is transmitted to the on-site indicator through magnetic coupling, driving the red and white flip columns to flip 180 °. When the liquid level rises, the flip column changes from white to red, and when the liquid level drops, the flip column changes from red to white. The red and white boundary of the indicator is the actual height of the medium liquid level in the container, thus achieving liquid level indication. Magnetic technology switches or remote transmitters can also be installed on the body tube to output switch signals or analog signals. Suitable for high temperature, high pressure, corrosion-resistant and other occasions, it can be displayed locally and remotely controlled.
The magnetic flap level gauge has a direct reading feature for on-site display. No need for multiple sets of liquid level gauges to be combined. It has the advantages of single unit full range measurement, equipment with fewer openings, clear display, prominent markings, and intuitive readings.
Due to its magnetic coupling isolator enclosed structure. Especially suitable for detecting flammable, explosive, corrosive and toxic liquid levels. Thus, the liquid level detection method in the original complex environment becomes simple, reliable, and safe.

IIUsers areSelection of magnetic flap level gaugeTechnical parameters that need to be understood and provided before placing an order:

1. Installation method:Side mounted (as shown in Figure 1) Top mounted (as shown in Figure 2)
2. Measurement medium:For example, water, oil, other chemical solvents, and liquid raw materials
3. Material requirements:For example, 304 stainless steel, 316L stainless steel, stainless steel lined with PTFE, PP, PVC (if the user is not clear, after providing relevant parameters, our technical personnel can help choose the location)
4. Measuring medium temperature:The different temperatures determine the different choices of material types for the float and display panel. When the temperature is too low in winter, it is necessary to install a potential heat or steam jacket for insulation. The liquid level gauge can measure the medium temperature of -20 ℃~500 ℃.
5. Work pressure:The magnitude of pressure determines the thickness of the main pipe and the differences in welding and other processing techniques. The maximum pressure of the medium that can be measured by the liquid level gauge can reach 10MPa.
6. Connection method:The top mounted magnetic flap level gauge series products generally use DN80 or DN100 connecting flanges, while the side mounted magnetic flap level gauge uses three connection methods: flange connection (such as DN25), clamp connection, and threaded connection.
7. Measurement range:1. The side mounted type is connected to the container to be measured through two upper and lower conduits, so its measurement range is the distance between the centers of the two conduits, abbreviated as center distance. (As shown in Figure 1)
2. The top mounted type is inserted into the container from the top, so its measurement range is the distance that needs to be measured between the top and bottom of the container. (As shown in Figure 2)



Installation Diagram 1Installation diagramFigure 2


8. Remote transmission output and alarm signal:The magnetic flap level gauge can achieve remote transmission of 4-20mA and 485 communication,Modbus protocol and switch signal, alarm function.

IIIWanhe InstrumentSelection of magnetic flap level gaugeoutside

WH-UHZ magnetic flap level gauge manufacturer number
	Range example: 1-1000mm									Range
		517C	Ordinary side mounted type							Basic type
		SF	Anticorrosive type
		ZQK/DB	Heat tracing type
		D	Frost proof type
		GW	High temperature type
		F	Explosion proof type (Bd is explosion-proof type, Bi is intrinsic safety type)
		DJ	Top mounted type
		GY	High pressure
		GWGY	High temperature and high pressure type
			other
			A	0.45-0.51						Medium density (g/cm3)
			B	0.51-0.65
			C	0.62-0.75
			D	0.75-0.9
			E	0.9-1.0
			F	1.0-1.8
				0	Atmospheric pressure					Process pressure (MPa)
				1	Other (specify separately)
					A	304				Material
					B	316
					C	316L
					D	PVC/UPVC
					E	304+F4
					F	304+PE
					G	other
						A	Column flipping on-site display			Display mode
						B	Transmitter output type (field header display)
						C	Transmitter output type (no field header display)
						D	Other types
							A	No alarm point		Alarm code
							B	There is an alarm point
							C	There are two alarm points
							D	other
								Example of flange diameter for connection: (DN) 50		Flange diameter

Note: For example, the main parameters of WH-UHZ-2000517CE0ACD20 are: medium density of 0.9-1.0g/cm3, nominal pressure of atmospheric pressure 1.0MPa, range of 2000mm, main material of stainless steel 304, transmitter output type (without on-site meter display), and DN20 type magnetic flap level gauge with connecting flange diameter.

(This selection guide is provided byWanhe InstrumentProvided by the technical department, if you encounter any problems while using the magnetic flap level gauge instrument, you can call our national sales service hotline:, and we will have professional personnel to answer your questions

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