Tuning Fork Level Switch

CX-FLS-LY Series Tuning Fork Level Switch A range of applications CX-FLS-LY-type tuning fork level switch for alarm or control a variety of fixed silo material level and the level of a variety of containers. Solid materials: rice, milk powder, sugar, salt, detergent, dyes, cement, stone, plastic particles. Liquid media: water, mud, paper pulp, dyes, oils, milk, wine, drinks. And can detect the liquid precipitate meter has no moving parts, and has anti-corrosion, high sensitivity and convenient installation. Second, the main technical data 1, Dimension: see figure 2, the ambient temperature: -25 ~ 60 ℃ 3, fork material: copper alloy or stainless steel (according order) 4, Power supply: AC220V50Hz DC24V 5, power consumption: 1.5W 6, the output signal: 2 normally open normally closed contact: Contact capacity: 220VAC 5A, 24VDC 10A, zero have 10 / 0mA output 7, amplitude adjustable, easy to measure density of materials in different states and 8, the largest material particles shape. Size: ≤10mm 9, the vessel Maximum pressure: 1.0MPa (orders should indicate the pressure) 10, vessel operating temperature: -20 ~ 200 ℃ (orders should indicate the operating temperature) 11, the oscillation frequency of the tuning fork: approx. 200 Hz 12, the amplitude of the tuning fork tip: about 0.5mm 13, tuning fork damping delay: about two seconds 14, tuning fork freedom delay: about 7 seconds 15, the medium is non-sticky material: the fork does not contain objects from corrosion Third, work Principle This instrument consists of a tuning fork and electrical signaling elements of a box installed locally instrument. Sender section: two fork ends fixed piezoelectric crystal, a group of driving elements drive the tuning fork to vibrate, the other group is a detecting element, the vibration is converted into voltage fork. Both were connected to electrical cabinets amplifier input and output, a mechanical - electronic oscillator circuit. When the tuning fork is blocked, the oscillator amplitude is small, relay, terminal output switch signal and 0mA current (less than 1mA current output greater than 0mA). When the tuning fork is not blocked, the oscillator amplitude increases, the relay is released, the terminal switching signal and 10mA output current (current output is greater than 10mA less than 11mA). Fourth, install and use an installation method can be side-mounted or vertically into the installation, fork body should be installed at a height corresponding test material surface. Flange standard selection JB82-59, DN50, Pg1.0MPa, installation methods shown in Figure. 2, protective tuning fork level switch (1) feed hole is not directly aligned with fork, if not avoid, prevent compaction of the bulk material falls on the tuning fork, shall be provided at the tuning fork than 20cm above the fenders, or adding a protective cover to avoid damage to the fork. If the wind deflector to send material may fortification. (2) the case of strong vibrations, use rope lifting prongs (must be special orders). (3) Do not set the instrument to direct sunlight, such as in direct sunlight can set up a heat shield. See Figure II. (4) To cable outlet case mounting hole down, and add rubber ring seal prevents water droplets penetrate the shell. 3. Use: (1) Inspect the Meter before work and delay the correct time before being put into operation. (2) The instrument should be regularly checked remove deposits on the fork. (3) ground wire to a good contact with the container wall or earth ground resistance <2Ω. (4) Do not take a direct hand fork. (5) the amplitude can be adjusted to suit different materials and applications. 4, adjustment method; 1 Hz potentiometer counterclockwise just raised red LED lights on, the green LED goes out. 2 slowly clockwise rotation Hz, so that the green LED just light, then red LED light goes out. Such as the medium is a liquid, and then half a turn clockwise rotation Hz to 3 turns; such as the medium is solid, clockwise rotation Hz potentiometer 3 laps to 6 laps. 3 If the setting is inappropriate, then clockwise or counterclockwise trimming Hz potentiometer until the appropriate date. 5. Terminal diagram: Terminal diagram when one (plus power contact state when the relay) V. Troubleshooting low alarm Fault Possible cause material surface below the low relay. Hollow material; material too light: the container walls generate 200 Hz vibration; amplitude too large. When the material surface is higher than the low, the relay does not pull no power supply; voltage is too low; heavy deposits on the tuning fork; fork damage; amplitude is too small. When the high alarm Fault Possible cause material surface is higher than high, the relay does not pull no power supply; voltage is too low; heavy deposits on the tuning fork; fork damage, the amplitude is too small. When the material surface below the highs and relay. Material too light; forming a hollow; Yung wall resonance amplitude is too large. Six measures the product warranty from the date of shipment from the use of this product within one year under specified conditions, such as quality problems, by the manufacturer for repair or replacement. Warranty measure Figure I (L required by the user decide) Configuration error: outlet hole up, inlet unbaffled, no visor insulation, two stocks fork up and down upright, tilt the fork upward. Figure II right inlet: outlet hole down, plus the inlet baffle, with a visor insulation, fork level down slightly inclined, two forks body horizontally. Seven separate type tuning fork level switch When the medium temperature is above 60 ℃ should be chosen Separate tuning fork level switch. Line the box with its tuning fork assembly partially separated from the maximum 5M (snakeskin tube built two screen open frequency cables, including a core wire two boxes were connected with the fork assembly line "1" Another wire two were connected. " 3 "two screen open line and two were connected with" 2 "). Level Switch Figure III Typical installation details, please visit the official website of Shanghai porcelain hee www.gninstruments.com, Tel: 021-57632436.