Shanghai Yuanben Magnetoelectric Technology Co., Ltd
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LS-235 normally open and normally closed convertible liquid level switch
LS-235 normally open and normally closed convertible liquid level switch
Product details

I. Overview

The liquid level switch is mainly composed of a guide rod with a built-in reed switch and a float with magnetic steel. When the float follows the measured liquid level/When the interface rises or falls, the magnetic field generated by the permanent magnet inside the float drives the reed switch to operate, achieving the switch action. Due to the fact that the reed switch contacts are completely sealed in glass filled with inert gas, no electrical sparks are generated when the contacts are turned on or off, making the control quite safe. It has a compact structure, high reliability and stability, simple adjustment, easy installation, long service life, explosion-proof, corrosion-resistant and other characteristics.


2、 Product features and applications

Features:

1. The reed switch contacts are completely sealed in glass filled with inert gas, making the control quite safe;

2. It has a compact structure, high reliability and stability;

3. Easy to adjust and convenient to install;

4. Long service life, explosion-proof, and corrosion-resistant.

Application:

1. The float level control switch is used for measuring the liquid level of open and pressurized containers for media such as oil, water, sewage, acid, alkali, etc. in industries such as civil construction, sewage treatment, and water purification. Control the addition (discharge) of liquid and the upper and lower limit alarm, or automatically start and stop the pump to achieve unmanned automatic monitoring of drainage and ensure pump safety.

2. Liquid level switches are applied in various fields such as household appliances, including fully automatic washing machines, water dispensers, water boilers, dishwashers, household and commercial electric heaters, and medicinal liquids. They transmit signals remotely to sealed containers, storage tanks, open containers, pools, and other containers for on-site indication and liquid level monitoring. They control the liquid level by controlling the start and stop of pumps or valve switches, or by triggering high and low liquid level alarms.

3. Liquid level switch is a telecommunication control device used for the liquid level height of automobiles and industrial equipment. When the liquid level reaches the set high and low positions, the electrical contacts of the liquid level switch open or close. By connecting it to the electrical circuit, it can achieve signal alarm or control of the filling (discharging) solenoid valve and electric pump, thus achieving the purpose of controlling the liquid level.

4. Widely used in industrial steel rolling workshops. It mainly consists of sedimentation tank, sewage suction well, filter, purified water suction well, water pump, and dosing equipment. The equipment that needs to be monitored mainly includes suction wells (water level), water pumps, inlet and outlet pipelines (water pressure, water flow rate, water temperature), filters, safety water towers, and other equipment.

5. Protection against refrigerant overflow caused by overfilling of agricultural equipment, refrigeration equipment, cooling water heaters, and refrigeration tanks.

6. Applied to drinking water and water treatment, it controls the operation of water pumps or solenoid valves according to changes in water level, providing signals for conduction and closure.


3、 Technical parameters

project Parameters
Installation direction vertical installation
connection method G1/8 thread installation
Switch type Normally Open
Operating point 12±3mm
Float specifications F2525 PP floating ball
Guide rod material SUS304
Floating ball material PP white
precision ±3mm
Working voltage 250Vac,200Vdc
contact resistance 135mΩ(Max)
Contact power 50W
Container pressure 1.8Mpa;
medium temperature room temperature
Liquid specific gravity 0.55~1.0
Extreme position Deviation from center by 20 °
Protection level IP55
impact resistance 30G Min
Vibration resistance 33Hz~2500Hz
switch life 1 million times

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4、 Product images

5、 Product dimensions



6、 Installation, use and precautions

1. Rotate the switch in the designated direction according to the end face markings to ensure that the side mounted floating ball rotates flexibly up and down;

For single point liquid level switches, N.O or N.C switch forms can be converted by inverting the float end face. LSAZ side mounted liquid level switch, in N.O or N.C switch form, can be switched by rotating the switch 180 ° according to the end face mark.

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