Tuning Fork Level Switch for Solid, Vibrating Rod Level Switch

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Specifications：
Tuning Fork Level Switch
Properties:
For cement, metallurgy , coal , feed, grain, steel, power plants , sewage treatment, food and beverage, pharmaceutical and other lines Industry, especially in the conductive material , material properties ( state , humidity , dielectric constant , density, etc. ) often change , safety requirements
Higher operating conditions can be well used , can be used for good mobility solid materials , liquid level monitoring of the material in the cement silo , powder
Dusty warehouse, ash silo , tank , tanks, fermentation tanks , etc. level monitoring has been widely used. This product reliability, maintenance-free, spirit
High sensitivity , easy to put into operation without the need for calibration .

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The main technical indicators:
fork length : 100mm ~ 1600mm ( extended if necessary ) ;
Power supply : DC24V or AC220V 50/60Hz;
fork work ( medium ) temperature:
Common type : -20 ~ 80 °C
Medium temperature : -20 ~ 130 °C
High temperature : -20 ~ 220 °C
Ambient temperature : -20 ~ 70 °C;
Working pressure : ≤ 2.5MPa;
Medium density : ≥ 0.7g/cm3 ( liquid ),> 0.1g / cm3 ( solid ) ;

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Output: relay switch ( DPDT DPDT) ( Contact capacity : 5A, 220VAC or 24VDC, 5A)
Power consumption : 1.5W (AC220V power supply ), 0.25W (DC24V power supply ) ;
Installation: threaded connection, flange connection ( can be user- customized ) ;
Electrical connection : M20 × 1.5; 3/4NPT
Housing protection : IP65;
fork material: 316 stainless steel
Explosion-proof mark : Exd Ⅱ CT4, Exia Ⅱ CT6.

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Works: 

Tuning Fork Level Switch is a new level switch . It is the use of a tuning fork vibration theory designed and manufactured .

It is in the tuning fork level switch sensor bar base, driven by a tuning fork piezoelectric wafer sticks, and a piezoelectric wafer acceptance by another vibration signals , the vibration signal to be recycled , and the sensor bar to resonate . When the material in contact with the sensor bar , the vibration signal becomes smaller until it stops resonance, the control circuit will output electrical contact signal . Rod sensitivity due to induction from the front to the rear turn weakened the natural principle , so when material inside the tank around with buckets stacked up , touching sensor bar stand < back > or when nesting , will not generate an error signal .

Simply put, the piezoelectric crystal tuning fork excitation produces mechanical vibrations which has a certain frequency and amplitude . When the tuning fork is liquid or solid immersion , the tuning fork vibration frequency and amplitude will change. This frequency change detected by the electronic circuit and outputting a switch .

scope and characteristics:

Tuning Fork Level Switch is a new level switch . Suitable for almost all liquid media , but also suitable for measuring free-flowing medium-density solid powder or granules. As the tuning fork level switch basically no moving parts , mechanical wear comparison , it is therefore no maintenance and adjustment, easy to use.

In addition, the level switch to new technologies and the use of foreign imported chips, has a long life , stable performance, safe and reliable , and adaptable ( different electrical parameters measured medium density shall not affect the measurement ) , without adjustment ( regardless what the media do not require on-site measurement calibration ) and freedom from maintenance , which is widely used in metallurgy , building materials , chemical industry, light industry, food and other industries in the level of process control .

Benefits:

Versatility : can be applied to various conductive and non-conductive media measurement , such as liquid , viscous , granules, powders

Fly ash : can be anti-adhesion : the use of patented anti-adhesion circuit can eliminate the adhesion of the material generated false signals .

Detachable probe : no cables between the controller and the probe connected to the controller can be removed at any time replacement repair , no shadow

Rang out materials: resistant to high temperature : Suitable for -40 °C to 220 °C working environment.

Output Type : A DPDT relay output , while a status light to display the output state , and 0 to 30 seconds delay function.

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