Working principle: The liquid level sensor is mainly composed of a magnetic reed switch and a floating ball. There are magnetic materials in the floating ball. One or more magnetic reed switches are set in a closed non-magnetic metal tube or plastic tube, and then the conduit is passed through one Or multiple floats with magnetic materials, and use fixed double rings to control the float and the magnetic reed switch at the relevant position. The float rises or falls with the liquid, and the contact near the beginning of the magnetic reed is used to open and close the ball. Action for liquid level control or indication（When the float is close to the reed switch, it is turned on; when it leaves, the switch is turned off）
Note: Low pressure refers toFloat switchCan be used inDC 0~110VOn the line
High pressure refers toFloat switchCan be used inAC 0~220V, DC 0~200VOn the line
used inWater purifiercustomer ofSuggestBuy high-pressure, Because the circuit board load of the water purifier exceeds the current withstand the low-voltage contacts, the high-voltage inner contacts have a large capacity, and the high-voltage ones are not easy to break.
Note:The rated current of the contact is 0.5A. Pay attention to it. Generally, it should be used in conjunction with a small relay. Overcurrent will burn the contact.Cannot directly control AC contactors, solenoid valves, alarms, water pumps, and various lights.
YZ-2 is without screw cap, Please pay attention when buying,Please purchase other 3 specifications for water tank perforation installation.
The small float level switch is a liquid level control part with simple structure and easy to use. It is equipped with a complicated circuit and will not be disturbed.
As long as the material is selected correctly, any liquid, pressure and temperature can be used.
The relationship between liquid properties and floats:
1. When the specific gravity of the liquid is different, the action position of the float will change. Generally, if the SG is smaller than water, the part of the float immersed in the liquid will increase.
2. The reference specific gravity of float switch products is water（SG=1）Therefore, when using the float, the specific gravity SG of the liquid level must be considered when selecting the float, which must be greater than the float specification
Otherwise, the float switch cannot float.
3. For liquids with high viscosity that will not dry up, a float with a larger outer diameter should generally be used.
4 The ball switch uses a magnet to sense the reed switch, so the measured liquid level should be free of iron filings, otherwise it will affect the correct action of the float switch.
use:
It is specially used for liquid level detection of various medium and small normal pressure and pressure liquid storage tanks, on-site indication signal remote transmission, liquid level alarm, suitable for
Used in various sanitary, toxic, corrosive media and explosive gas dangerous places. There are a variety of installation forms, suitable for various shapes
Style container.
Selection instructions:
Please select floats of various specifications listed in the above table according to the temperature, pressure, specific gravity, acid and alkali resistance of the tested object.
1. Temperature: The maximum temperature of PVDF is 90℃, the maximum temperature of PP is 70℃, and the maximum temperature of SUS304/316 is 120℃.
2. Pressure: The maximum pressure resistance of plastic floats is 5kg/cm2, and the maximum pressure resistance of SUS floats is 10kg/cm2.
3. Adhesion: A floating ball with a large ball and a small specific gravity should be used to overcome the surface tension of the liquid.
4. Chemical properties: The plastic material is suitable for acid and alkali places. PVDF should be used when temperature is considered.
5. Essence: Metal materials should be used.
6. Specific gravity: The specific gravity SG of the float must be less than the measured liquid, otherwise the float will not float.
1.Contact rating:10W,50W 6.Resistive load:107Back to
2.Switching voltage:AC220V, DC110V 7.Operating temperature:-10~70°C
3.Switching current:0.5A 8.Work pressure: <1.0MPA
4.Insulation resistance:>10Ω 9.Specific gravity of medium:>0.6
5.Contact impedance: <100m 10.Switch material: PP
Template protection code
Template protection code
Template protection code
Template protection code
Template protection code