Compact type fork liquid level switch

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ZW-ZBK series Compact type fork liquid level switch Is a kind of switch liquid level based on the sh…

Productoverview:

ZW-ZBK series Compact type fork liquid level switch Is a kind of switch liquid level based on the short fork vibration technology. It is a small fork fork switch, equipped with stainless steel body and durable, suitable for all kinds of liquid and powder. 3/4 "or 1" economic type liquid level switch is installed in the pipe or tank by screw threads, or through the connecting piece is arranged in the food industry and health facilities. Direct load switch is applicable to all power supply or PNP output, used with programmable logic controller (PLC) for direct interface. Provide authentication to prevent overflow. Only applicable to the security area.

Two, work principle:

ZW-ZBK Series <strong> Compact 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-ZBK Series <strong> Compact fork liquid level switch</strong> 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, from the real operation flow, turbulence, bubble, bubble, vibration, solid content, coating, liquid properties and product changes;

2, does not require calibration and requires minimum installation procedures;

3, polarity insensitive and short-circuit protection function;

4, the industry standard plug / socket connector;

5, no movable parts or slot to realize free maintenance;

6, electronic components, inspection and monitoring of -LED display status information and good information;

Provide convenient, 7 magnetic test points for functional testing;

8, compact design makes compact and lightweight;

9, "dripple" fork design in viscous liquid has a faster response time;

10, health connections.

Five, technical parameters:

A, physical properties:

1, this product is compact type liquid level switch;

2, the measuring principle of tuning fork vibration;

3, the application can be used for most liquids, including coating liquid, gas liquid and slurry.

B, mechanical properties:

1, the process of 316L stainless steel materials (1.4404);

For Tri-Clamp connections, smooth surface, manual polishing is better than 0.8um;

1 "BSPP (G1) for non asbestos gasket material BS7531 X carbon fiber, equipped with rubber adhesive.

2, shell material

Shell body: 304 stainless steel with polyester label;

LED display window: flame retardant polyamide (Pal2) UL94 V2;

Plug: polyamide FRP plug;

Seal: nitrile rubber 122 "(50mm).

3, installation

3/4 BSPT (R) or NPT

1 "BSPT (R) or BSPP (G) thread, or 2" (51mm) Tri-clamp sanitary fittings

Sixth, 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, may not be the instrument settings 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.

Seventh, note:

When installing the sensor, inserted into the tank, with a wrench at the upper part of the hexagonal 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.

A. installation when the fork body do not have a strong impact, so as to avoid damage to the piezoelectric crystal.

B. meter sensor should try to avoid the impact of the material, the level of installation, the fork body of a parallel plate fork 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.

Eight, the selection of encoding:

Nine, 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.