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MEASURE IT! CONTROL IT!
Volition Controls is a Manufacturer’s Representative & Distribution Company
LEVEL MEASUREMENT & DETECTION
The types of level measurement methods we provide are below.
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Liquids, powders and chemical properties have unique characteristics that make selecting the right technology critical to the success of detection and measurement of your process. We specialize in providing the best level solutions while being the most economical.
TDR / GUIDED WAVE RADAR
Guided wave radar level transmitters utilize the some of the best technology available for continuous level measurement and interface level measurement.
Guided wave radar works with high-frequency radar pulses which are guided along a probe. As the pluses impact the medium surface, the characteristic impedance changes and part of the emitted pulse is reflected. The time between pulse launching and receiving is measured and analyzed by the instrument and constitutes a direct measure for the distance between the process connection and the product surface.
Features:
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Reliable and maintenance-free measurement in liquids, also in turbulent media and foam.
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Unaffected by density, temperature, conductibility, or humidity.
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No impairment by outgassing media (steam pressure).
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Process temperatures up to +750 °F
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Process pressures up to 5,800 PSIG
PRODUCT PAGES:
OPTIFLEX 1100 Guided radar (TDR) level transmitter for basic liquid applications
OPTIFLEX 1300 Guided radar (TDR) level transmitter for heavy-duty level and interface applications
OPTIFLEX 7200 Guided radar (TDR) level transmitter for advanced liquid applications
OPTIFLEX 2200 Guided radar (TDR) level transmitter for storage and process applications
OPTIFLEX 3200 Guided radar (TDR) level transmitter for liquids with hygienic requirements
OPTIFLEX 6200 Guided radar (TDR) level transmitter for solids from granulates to powders
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VF02
VF07
NON-CONTACTING RADAR (FMCW)
Radar works with high-frequency radar pulses which are emitted by an antenna and reflected from the product surface. The time of flight of the reflected radar pulse is directly proportionate to the distance traveled. If the tank geometry is known, the level can be calculated from this variable.
Features:
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Non-invasive, maintenance-free measurement also under extreme conditions.
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Unaffected by density, temperature, conductibility and humidity.
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No impairment by outgassing media (steam pressure).
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Process temperatures up to +750 °F
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Process pressures up to 2,320 PSIG
PRODUCT PAGES:
OPTIWAVE 1010 Radar (FMCW) level transmitter for bypass chamber or magnetic level indicator
OPTIWAVE 1400 Radar (FMCW) level transmitter for liquids in the water and wastewater industry
OPTIWAVE 3500 Radar (FMCW) level transmitter for liquids with hygienic requirements
OPTIWAVE 5200 Radar (FMCW) level transmitter for liquids in storage and process applications
OPTIWAVE 5400 Radar (FMCW) level transmitter for liquids in basic process applications
OPTIWAVE 6400 Radar (FMCW) level transmitter for solids from granulates to rocks
OPTIWAVE 6500 Radar (FMCW) level transmitter for powders and dusty atmospheres
OPTIWAVE 7400 Radar (FMCW) level transmitter for agitated and corrosive liquids
OPTIWAVE 7500 Radar (FMCW) level transmitter for liquids in narrow tanks with internal obstructions
VG5
VG6
NON-CONTACTING ULTRASONIC
Non-contact ultrasonic level measurement is one of the most versatile level measuring technologies and is suitable for both liquids and solids measurement. It can be used for continuous or point level detection. The principle of operation is often referred to as 'time of flight'.An ultrasonic pulse is emitted from a transducer down towards the media and is reflected back from the surface. The time it takes to travel from and to the transducer is directly proportional to the distance traveled
Features:
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Wide range of applications
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Low cost
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Simple to install
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Non-contact, long measuring ranges - up to 196 Ft.
Applications:
Pellets, Granules, Slurries, Pastes and Liquids
PRODUCT PAGES:
MICROFLEX D
MINIFLEX LR
REFLEX LR
RF / CAPACITANCE
A solid-state level sensor for detecting the level of liquids and solids. The probe consists of a sensing element and an integral grounding sleeve that is separated by an insulator. There is a fixed capacitance between these two elements and this will change when product comes into the vicinity or contacts the sensing probe. The sensor will then detect this change and change the output. This method of detection relies on the dielectric properties of the media. The higher the dielectric the easier it is to detect (water has a value of 80+ and air is around 1)
Features:
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Universal for liquids and solids, low maintenance technology, unaffected by temperature, pressure.
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Corrosion resistant and a wide range of mounting options.
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Relatively low cost.
Applications:
Liquids, slurries, powders, pastes, granules, pellets and can also be used for interface detection in applications such as oil and water.
SLUDGE - INTERFACE - CLARIFIER -BED LEVEL
Blanket and Bed Level interface controllers are microprocessor based transmitters combined with a high power sonar transducer. Monitor and control the blanket level in settlement tanks for a wide range of industries on applications including:
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Primary Sedimentation - Sludge blanket levels
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Secondary and Final Clarifiers - RAS blanket / FLOC level / Clarity
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Sludge Thickeners - Settling blanket level / Clarity suspended solids
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DAF Tanks - Settling blanket Level / Floating bed level
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Sequential Batch Reactors (SBR) - Settling blanket level / RAS blanket
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Lammella clarifiers- Settling blanket level / Clarity suspended solids
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Counter current decantation (CCD) tanks - Blanket level / FLOC / Clarity
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Mining and Process settling ponds, lagoons, tailings dams, carbon columns
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TUNING FORK / VIBRATION SWITCH
Tuning fork style switches use a piezo-electric crystal that enables the switch to vibrate at a
fixed pre-defined resonant frequency. When the tuning fork is submerged in the medium the frequency at which the switch is vibrating, changes. This change is detected by the unit’s electronics and is converted into a switch output, either relay (SPDT) or PNP/NPN (depending on the model).
All models are made with 316 Stainless Steel and are available with Halar or epoxy coatings and hygienic fittings for sanitary applications. Standard versions can operate at temperatures up to 176º F and higher temperature versions can operate at temperatures up to 248º F. Most models have adjustable time delay adjustments as well as a Wet / Dry selection for both High and Low level application requirements.
SILO PROTECTION SYSTEM
An optimal system will prevent over-pressurization that will cause damage, disasters & environmental releases of bulk solids.
• Ground Level Testing
• Pressure sensor, hi-alarm level sensor, and PRV testing (essential)
• Simple, one-button press to test all components
• Silo filling auto shut-off control
• Pneumatic cleaning of pressure sensor
• Recording of the number of events on incidents of over-pressure (time/date stamp)
• Recording of the number of events of PRV lift and opening (time/date stamp)
• Recording of the number of events of high-level probe activation (time/date stamp)
• Filter On/Off output option to check filter status
• Filter air supply monitoring alarm option