Ordinary type fork liquid level switch

Productoverview:

ZW-YCK series Ordinary type fork liquid level switch Is a new liquid level switch. A tuning fork crystal excitation vibration, vibration frequency changes when it is submerged, the frequency change detected by electronic circuit and the output of a switch. Tuning fork switch is also called "float" where the use of electrical floating ball liquid level switch and the structure, turbulence, agitation, bubble and vibration causes can not use float level switch use electric float".Because the fork liquid level switch without moving parts, so no maintenance and adjustment, is a replacement of the float switch upgrade.

Two, work principle:

ZW-YCK series of ordinary type fork liquid level switch principle is through the installation of the fork on the base of the piezoelectric tuning fork in resonant frequency vibration. When the tuning fork and the medium contact, the frequency and amplitude of the tuning fork will change, these changes are detected by the intelligent circuit, and converts it into a signal switch.

Fork liquid level switch by the crystal vibration excitation, when it is liquid or solid immersion when the vibration frequency changes, the frequency change detected by electronic circuit and the output of a switch. Tuning fork switch is also called "float", and because the electrical switch can where the use of floating ball structure, turbulence, agitation, bubble, vibration and other reasons can not use the float switch use electric float". No moving parts, so there is no need of maintenance and adjustment, is a replacement of the float switch upgrade. On the level of the upper and lower limit alarm and control.

Three, application:

ZW-YCK series of ordinary type fork liquid level switch can be used for less corrosive liquid limit detection, for the measurement of slurry, viscous and easy to foam, corrosion resistance and other kinds of media, such as tap water, mineral water, industrial wastewater; generating gas liquid; pulp, glue, dye, syrup, juice, beer; liquid medicine, weak acid, weak base solution and so on.

Four, main features:

1, with intelligent circuit level, level switch, used in almost all of the liquid - solid particles of light;

2, a variety of output form -- 2 wire AC, 2 wire DC;

3, high frequency excitation, strong anti-interference;

4, simple installation and maintenance free;

5, operation and conductivity of liquid, high dielectric constant, viscosity, pressure, temperature.

Five, technical parameters:

1, working temperature:

The sensor part: common type: from-20 DEG C, ~ 80 type: high temperature from-20 DEG C ~ 200;

Circuit: from-20 DEG C ~ 70 (industrial products), 30 DEG C 80 (industrial products);

2, relative humidity: 5 ~ 100 (%);

3, atmospheric pressure: 86 ~ 108 (Kpa);

4, the environmental vibration level: V - L - 4 acceleration is less than or equal to 1g;

5, the power supply voltage: 220V AC + 10%50Hz ~ 60Hz ~ 264V AC 85V: intrinsically safe;

6, power consumption: less than 3VA;

7, working pressure: 1MPa;

8, material: 20 degrees, medium angle of repose;

9, the material density of the medium: liquid and solid 0.7g/cm3 > > 0.1g/cm3;

10, particle size: more than 15mm;

11, material: medium viscosity (liquid) is less than 1000mm2/s.

Six, technical characteristics:

1, switch signal delay time: 1 ~ 3 (s);

2, output form

Normally open and normally closed contacts

The relay output: 220V 5A, AC 10A 30V DC 5A, 10A;

The constant current output: 0/10 mA DC (except for intrinsically safe type abroad have this output);

The output voltage: 1/5 V DC (safe the output);

3, high temperature sensor and circuit part Zui: the separation distance is less than or equal to 50m;

4, this type of tuning fork level switch remote distance: 5Km;

5, a light signal display: green light that is not in contact with a tuning fork level sensor in the work, the red light indicates that the fork has been exposed material, the sender sends a signal;

6, the tuning fork level switch shell protection grade: IP65;

7, explosion-proof type explosion-proof switch tuning fork level level: Exib (IB) BT5 ii.

Seven, installation instructions:

The tuning fork switch usually adopts side mounted (mounted on the side wall) installation and silo wall of material level detection on the lower limit position of the silo body; when the inconvenience of side hole can be used when the top loading (installed in the warehouse at the top) installed position should be selected to avoid feeding material impact position; installation and operation without material can prevent the pipeline pump.

Eight, test:

Tuning fork switch factory general to the high level alarm, the tuning fork switch is connected to the power supply, the light will be brought into the water after the vertical, the insertion depth should be greater than 25mm, then the output light is off; the fork lift out of the water, the output light is on, that the instrument is working properly.

Nine, use and maintenance:

1, the feeding hole can not be directly at the fork, if cannot avoid, in order to prevent bulk material compaction to fork, fork must be greater than 20cm above provided protection board, or with protective cover, so as not to damage the fork. If the air material can fortify the wind plate.

2, strong vibration occasions, available rope hoisting fork (have special orders).

3, can not be instruments in direct sunlight, such as sunlight can be provided with a heat insulating plate.

4, shell installation to make cable outlet holes down, and the rubber sealing ring to prevent the infiltration of water droplets in the shell.

5, before use to check instrument work and delay, can be run correctly.

6, the instrument should be inspected regularly, remove sediment on fork.

7, grounding wire to the vessel wall or the earth with good contact, the grounding resistance is less than 2.

8, fork limit switch usually uses side mounted installation and silo wall material on the height of the upper and lower position detection, when the inconvenience of silo of side hole can be used when the top loading, location selection can avoid material impact position.

Ten, installation notes:

1, install the sensor when inserted into the tank, with a wrench at the upper part of the square of six sensor screw can be tightened, not moving case wring their hands, because in the process of tightening will cause the shell and the probe rod rotates between. The connecting cable electronic unit and sensor in the factory inside the casing is connected, screwing the shell will connect the internal tensile cable.

2, pay attention to installation of the fork body do not have a strong impact, so as to avoid damage to the piezoelectric crystal.

3, the instrument sensor should try to avoid the impact of the material, the level of installation, the fork body two parallel fork plate should be perpendicular to the ground (the way fork onto or down direction markers), to ensure that the material can easily flow out from between the forks.

Eleven, the selection of encoding:

12, design selection and ordering information:

1, please specify the parameters according to the selection marker;

2, also indicate the medium name, temperature and pressure;

3, to measure the material level, indicating the material name, size and capacity;

4, such as the use of other standard flanges, please indicate the standard no.;

5, please indicate whether a protective cover or protection plate flange.

Customer service service commitment:

1, our level switch series products quality problems within twelve months, responsible for free maintenance.

2, the warranty period if the products of our company have any quality problems, our company is responsible for free repair or replacement.

3, the warranty period if the user use undeserved, cause damage to the product, our company is responsible for the maintenance, collect the damaged parts cost.

4, after the warranty period of product quality problems, our company is responsible for the maintenance, collect the damaged parts cost.

5, if the user needs to our service, our company in the province of the user service personnel arrived at the scene within 12 hours, arrived at the scene 48 hours outside users.