Explosion-proof float level controller

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ZW-UQK series Explosion-proof float level controller Is specifically designed for use in explosive e…

Productoverview:

ZW-UQK series Explosion-proof float level controller Is specifically designed for use in explosive environment and design level control instrument manufacturing, this product is designed based on the principle of buoyancy and lever principle, when the liquid level changes, the position of the floating ball will change with the change of the liquid level, the float displacement will pass through the leverage for the micro switch, and then by fretting switch switch signal. Of course, the floating ball through the lever and the micro switch function, can be directly and the micro switch, micro switch can also force and effect produced by magnetic coupling.

Two, work principle:

ZW-UQK series <strong> explosion-proof float level controller is</strong> composed of a large power reed as the main control component, the dry reed pipe arranged in the duct, the floating ball is sheathed on the outside of the catheter, the ball is arranged in the annular permanent magnet, the catheter is arranged on the upper part of the sealing connection box, internal wiring terminal, the bottom thread bottom sleeve sealing catheter, the catheter can be vertically fixed in the water tower, water tank, water tank opening the container, the float with the water level change and fall, when the water level is to control the low water level, the dry reed pipe is subjected to a magnetic field, will send a low level or high level signal, and has an effect on the water level automatic control device or water level alarm device.

Three, application:

ZW-UQK series <strong> explosion-proof float level controller is</strong> used in various industrial equipment, household appliances and other oil and water machine. Stainless steel floating ball liquid level switch for liquid level detection, all kinds of small and medium pressure and pressure of liquid storage tank remote signal, alarm switch, can be applied to a variety of health, environmental protection, poisonous and corrosive medium with strong acid liquid.Home appliance or mechanical and PP plastic floating ball is mainly used in hot water, such as water heaters, water machine, dishwasher, electric water heater, hydraulic machine, air compressor, and other ancillary equipment.

Four, main features:

1, advanced design and strict manufacturing process provides a reliable guarantee for product quality.

2, the shell is made of ABS, PP, PVC plastic, high strength, good corrosion resistance.

3, cable with special materials, oil resistant, acid, alkali, corrosion resistance is superior.

4, simple structure, reliable performance. Stable and reliable output on and off switch signal, no misoperation, high reliability.

5, simple installation, convenient debugging, on the mobile positioning block, can freely adjust the liquid level control range.

Five, technical parameters:

Rated current: 16A-120VAC; 10A-300VAC; 0.6A-150VDC;

Contact output: separate SPDT contacts;

Contact material: silver (Ag);

Body material: precision alumina ceramics;

Switch shell: die casting magnesium alloy surface polishing of polyurethane coating;

Rated temperature: Standard Type: -40~250 ~ C;

Type: high temperature less than 370 DEG C;

Pressure rating: ANSI Class150, 300, 600, 900LB, PN1.0;

Process connection: flange connection, 80 DN50, 100 2'~4 ANSI; ";

Medium density: 0.40g/cm3;

Electrical connection: M20 * 1.5, 1/2'NPT female;

Explosion proof grade: Flameproof intrinsically safe Exia Exd II BT4 II CT6;

Protection grade: IP65.

Six, installation method:

1, the installation should be far away from the inlet (outlet) nozzle, so as to avoid water fluctuations caused by misoperation;

2, installed in the mixing area, can be installed at the tube or baffle;

3, junction box line inlet to down;

4, the control circuit load does not overload use (less than the capacity of contact use);

5, the floating ball and the connecting rod to move up and down the angle (horizontal line) to + 14 degrees, when the floating ball in the horizontal position switch;

6, the installation should pay attention to and the connecting pipe length and aperture size matching, to ensure that the floating range of the floating ball.

Note: the total length of the floating ball and a connecting rod part to allow a certain degree of error.

Seven, installation instructions:

External installation:

1, the installation location should be away from the water inlet, otherwise the switch will malfunction caused by the fluctuation of water inlet.

2, if the float level switch device in the vessel wall, can be installed L type steel bracket.

3, if the switching device can be installed in the stirring area, wave tube or wave baffle.

4, the selection of pipe flange diameter greater than the diameter of the connecting pipe of the floating ball.

Recommend the use of multiple core cable wiring, 5.

6, controlled by the line load must match the float switch contact capacity.

7, the measured liquid proportion must be greater than the proportion of floating ball.

8, the floating ball movement has orders in the factory is adjusted according to the customer, please do not arbitrarily adjust the float position.

Internal wiring installation:

1, when the float switch used in motor, relay, solenoid coil circuit has an inductive load, in parallel across the load protection circuit such as: RC (buffer), rheostat, diode etc..

Note: please do not float switches are directly connected to the electromagnetic valve, motor or solenoid switch.

2, when the floating ball switch is used in capacitors, hot bulb, long cable and capacitive load, will produce a surge current in the switch contacts; in the float switch is connected in parallel with the protection circuit, such as current limiting resistors or surge absorber etc..

Eight, wiring and contact instructions:

1, open the box, the cable from the inlet through, and lock line inlet cable fixed head, according to the nameplate and wiring board terminal station logo on the terminal of the contact line on the corresponding access.

From the 2 wiring board, digital identification terminal table corresponding to a contact from top to bottom of the floating ball.

3, float ball joint is divided into three forms:

1A said: when the liquid level is higher than the floating ball contact A-C;

The 1B said: when the level is below the floating ball contact B-C;

The 1AB said: when the A-C level is below the floating ball contact open, B-C connected; the liquid level is higher than the floating ball when the A-C contact is connected, disconnect the B-C.

4, please tighten the lid after the completion of the wiring and wiring port is fixed, in order to ensure the waterproof junction box.

Nine, common faults and exclusion:

1, failure analysis and troubleshooting of floating ball movement

The liquid proportion is less than the proportion of floating ball to re confirm the proportion of floating ball;

The floating ball, and the Water Leakage company to replace the floating ball;

The floating ball to remove foreign bodies stuck in foreign body.

2, the floating ball moves, but no signal output

The float position offset, adjust the float position;

The magnetic reed switch is damaged, replace the magnetic reed switch.

3, the output signal is not normal, to eliminate the magnetic field near the magnetic field interference;

4, maintain the signal, unable to recover, the floating ball can not return, a foreign body stuck to remove foreign bodies;

5, there will be a two signal output, ring position, adjusting ring buckle position.

Ten, matters needing attention:

1, regular cleaning of debris and dirt rod and the floating ball (depending on the water quality and cycle);

2, regular inspection of all parts are firmly;

3, should consider the proportion of liquid, in order to ensure the smooth float to float;

4, control circuit of the load can not use overloading (less contact capacity);

5, electrical wiring box interface must be down;

Please choose anti-corrosion liquid, pH 6;

7, the floating ball and the connecting rod and the connecting tube against the container shall not process.

Eleven, specification data sheet:

Twelve, The selection of encoding:

Note: Please specify the specific process of connection, the size and position of action point.

Thirteen, design selection and ordering information:

1, the liquid level switch device specifications;

2, measuring range;

3, working pressure and temperature;

4, material control device;

5, the special requirements of negotiation;

6, whether the liquid level device supporting the supply vessel flange, bolts, nuts, washers and valve sealing parts, so that the correct selection.