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OPTISWITCHes are available in a number of variants: with short and long paddles, coated and uncoated, and made of various metals and alloys. The OPTISWITCH 5000 is designed for liquids; typical applications are overflow and dry-run protection. The OPTISWITCH 3000 supplements the KROHNE product range in this sector by switches for solid materials, mainly particulates with a bulk density upwards of 0.02g/cm3.
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VEGASWING:
Versatile use in liquids
The piezo drive is the heart of VEGASWING, actuating the tuning fork on its resonance frequency. The frequency of the fork falls when being immersed. The frequency change is processed by the integrated oscillator and converted into a switching command. The piezo drive is screwed to ensure reliability and ruggedness. With the tuning fork of only 40 mm length, VEGASWING 60 works reliably in all liquids and mounting locations. Pressure, temperature, foam and bubbles and even viscosity do not affect the switching accuracy. Even pipelines with a nominal width of DN 25 are no problem.
VEGASWING 60 is the universal level switch for all applications.
Advantages
- Virtually independent of product characteristics
- Level detection up to +250°C
- Short tuning fork of 40 mm
Applications
- Level detection of liquids
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BinMaster vibrating rods feature a unique single-rod probe design with a sword-shaped blade that prevents bridging of material, making them superior to typical “tuning fork” designs by allowing material to easily flow by, preventing build up on the blade. Features include a self-cleaning sensor, switch selectable high/low fail-safe, and an auto sensing power supply which can accommodate 20 – 250 volts AC/DC. They feature three sensitivity adjustments – high for light and fluffy materials, medium, and low for heavier materials or materials that may tend to cling to the vibrating rod. They are easy to install, mounting to the vessel via a standard 1-1/2 inch NPT mounting socket and require no calibration. Remote electronics via a point level alarm panel are available to alert to bin levels for four up to 24 individual sensors.
The VR-21 is BinMaster’s standard piezoelectric driven vibration type point level switch, which has an insertion length of 7.37 inches. It is suitable for both top and side mount applications and is ideal for a wide variety of dry and bulk powder materials including extremely light, fluffy materials. The VR-41 is designed for use with a variety of heavy, medium and light materials ... including extremely light, fluffy materials. Intended for top mount locations, it is available in lengths from 13 inches up to 13 feet. The VR-51 extended vibrating rod uses a steel-rope reinforced cable and allows for insertion lengths from 19 inches up to 19 feet and is intended for top mount applications.
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The vibrating rod of VEGAVIB is actuated via piezoceramic elements. If the vibrating rod is immersed, the amplitude will be damped. The amplitude change is processed by the integrated oscillator and converted into a switching command. Due to the rod design, it is nearly impossible for material, e.g. granules, to get wedged in. Typical applications are overfill or dry run protection systems, e.g. in flour, milk powder, sand, cement, plastic granules, styrofoam and down feathers. Even products with a specific gravity up to 0.015 g/cm³ (15 g/l) can be measured. An adjustment with medium is not necessary as the mounting location and the granulation size do not affect the measurement.
Advantages
- Virtually independent of product characteristics
- Optimum rod configuration for solids
- Easy cleaning
Applications
- Level detection of solids
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TF-100 Series Vibrating Level Switch
with TF-L-Relay Output and TF-P-Transistor Output or with TF-T-Current Output
The TF-100 series tuning fork is a point level switch for clean liquids and light slurries. It is available with Relay, Current, and PNP outputs. The TF-100 series carries FM hazardous area approvals.
The TF-100 Series vibration technology level switch is an excellent choice for most high or low-level liquid level measurement requirements. The TF-100 requires no calibration and is not affected by changes in electrical properties of the material being measured.
Relay, current, or PNP outputs
Temperatures from -58ºF to 302ºF, Pressure from vacuum to 928 psi
No calibration required
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For conductive liquids
Contact 2 contacts via relays
Connection G 1, G 11/2 male, 1 NPT, 11/2 NPT male
Material st. st., hastelloy, titanium
Max. pressure pressureless
Max.temperature 60°C
For conductive liquids (>20 mikroS/cm)
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Compact vibrating level switch for liquids
For universal use as overfill or dry run protection system
All advantages in an overview:
- setup without adjustment
- screwed piezo drive
- SIL 2 qualified
- product-independent switching point with high reproducibility
- wear and maintenance-free
- instrument from the plics® family
Version: standard version
Material: 316L; Hastelloy C4; enamel; ECTFE; PFA
Process: fitting from G¾A
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VF Vibro level indicators
As occasion demands, the level indicators type VF can be used as full, empty or demand indicator for bulk goods. They are detecting the filling level in silos, containers, discharge pipes and vessels as well as jam at drains of screw conveyors, feeders and also at the input and output facilities of elevators. They can be used for dusty, powdery and granulated as well as grained bulk goods with grain size up to 10 mm.
The vibro level indicators guarantee absolute reliability and secure function, even under extreme conditions.
Function principle
- Change of an „oscillating system“ with covered vibrating rod or without bulk goods.
- When bulk material comes in contact to the vibrating rod, the vibration will be attenuated.
- This will be sensed and evaluated by the electronics.
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The V-Tork is a point level switch that is designed to detect low or high level of liquids, thick and turbulent fluids, as well as corrosive mediums and pastes (depending on viscosity). Due to its simple and rugged controlled system, the V-Tork is virtually unaffected by any chemical or physical properties of the mediums and can be installed at any angle of the pipe or tank. It is ideal for multiple-purpose processing where the probes must be compatible with a variety of process materials and process conditions. The V-Tork does not require recalibration between batches and can also be cleaned in place.
The V-Tork can operate in temperatures up to 176ºF (80ºC) and has a maximum working pressure of 725 PSI (50Bar).
Standard probes are available with 3/4” up to 1” BSP or NPT process connection and insertion length L= 3 1/8” (L= 80mm).
FEATURES
*Unaffected by variations in density, conductivity, or dielectric constant.
*Unaffected by foam, tank agitation or vibration.
*Various length options to best suit your application.
*Made with 316 S.S. and can be PTFE coated.
*Relay and Transistor outputs available.
*Thread, Tri-Clamp, Hygienic Fittings, Flanges, etc.
*Polished Forks - RA tested when necessary
*3A approved
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The tuning fork is piezoelectrically energized and vibrates at its mechanical resonance frequency. (of approx. 1200 Hz.) The piezos are fixed mechanically and therefore are not subject to temperature shock limitations. The frequency changes when the tuning fork is covered by the medium. This change is detected by the integrated oscillator and converted into a switching command.
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The Pulsarpoint 200 series range of point level measurement systems offers the very latest state of the art technology applied to the well respected vibrating blade principle of operation. All units in the range are manufactured to the highest standard from 316 solid stainless steel for maximum strength durability and corrosion resistance. Series 200 provides highly reliable, fixed point level indication or control with a repeatability of 1mm or better. Versions are available to measure solids and slurries with relay output. The Pulsarpoint 200 series uniquely combines solid rugged construction with high sensitivity to produce maximum reliability. The unique blade design allows 'tip sensitive' control and the unit does not react to troublesome material build up on vessel walls. Standard units may be extended using fixed or flexible extensions to suit the application.
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Applications:
- Detection of high, intermediate or low levels
- Non sticky powders and granulars (<10mm)
Advantages:
- No moving parts
- Large self cleaning single blade
- Easy to install
- Adjustable sensitivity
- Multiple probe lenghts
- Multiple products can be detected in the same silo
- Minimum material density : 0.03
- Maximum working pressure : 10 bars
- Die cast aluminium
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