High temperature type fork liquid level switch

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ZW-YCK series High temperature type fork liquid level switch Is to cause the vibration of the resona…

Productoverview:

ZW-YCK series High temperature type fork liquid level switch Is to cause the vibration of the resonant piezoelectric crystal, when the material damping, the amplitude decreases sharply and the frequency and phase change, these changes can be detected within the electronic circuit, after processing into the switch signal output. Fork level switch can be high and low for tank monitoring, control and alarm, applicable to all kinds of liquid, powder and granular solids.It is practical and simple, reliable operation, strong adaptability is basically a tuning fork and outputs the working state of free maintenance, with light emitting diode, according to state adjusting instructions, and is equipped with three input modes (DC 24V, AC 110V and AC 220V) and multiple output mode (DC current output type relay contact output, DC voltage output type). All types have high or low fault alarm mode and choice of instrument sensitivity switch.

Two, work principle:

ZW-YCK series <strong> high temperature type fork liquid level switch</strong> 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 <strong> high temperature type fork liquid level switch</strong> is not only suitable for hydrochloric acid, sulfuric acid, nitric acid, alkali, industrial wastewater, syrup, liquid level measurement etc., and is especially suitable for a bubble, bubble, viscous liquid and vibration interference of complex measurement.

Four, main features:

1, strong adaptability of measured materials with different electrical parameters, density of measurement are not affected. Scaling, agitation, turbulence, bubble, vibration, medium viscosity, high temperature and high pressure conditions have no effect on detection;

2, avoid the maintenance due to the testing process tuning fork limit switch is completed by electronic circuit, no moving parts, so the installation operation will require no maintenance;

3, do not need to adjust the tuning fork detection limit switch is not affected by the influence of electrical parameters and the measured medium density, so no matter what liquids without measuring field adjustment.

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.

Seventh, product testing:

1, check the power connection:

Terminal board all the power wiring is connected to the top of the electronic unit.

2, the high and low alarm selection:

The high and low alarm can be installed in the field by the high and low in the electronic unit alarm block set tripping.The alarm for high on the right side, the alarm is low on the left side (the factory is set to high level alarm, also can change the output terminal).

High alarm: when the material end submerged sensor Center (or instrument failure), a high level alarm signal.

Low alarm: when the material is lower than the center sensor end (or instrument failure), a low alarm signal.

The relay wiring 3:

A, each instrument with a set of relay contact (SPDT) SPDT relay, only as a switch, can directly drive the alarm or other large power devices. All control signals are at the top of the output terminal of electronic unit. When the green light indicates that the relay (not normal alarm, as shown in Figure 3), when the relay is in the state of alarm lamp (or when fault occurs in the power meter, the relay in the alarm state).

B, open the upper cover of the shell, a connecting terminal, a toggle switch and a light emitting diode LED, sensitivity adjusting button. The sensitivity adjustment knob clockwise, counterclockwise rotation, reduced sensitivity; sensitivity.Usually, the factory has been marked without adjustment for high viscosity liquid medium, generally lower sensitivity.

Eight, installation instructions:

Tuning fork switch usually uses 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 the impact of the material position when the feed; no material can be installed and run on pump to prevent pipeline.

Nine, 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, the instrument is working properly.

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, the level control device specifications;

2, measuring range;

3, working pressure and temperature;

4, material control device;

5, special request;

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

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.