34 companies for Overfill Protection ✓ B2B manufacturers, distributors & suppliers from 3 countries ✓ With special service for fast information and prices ✓
Silos that are pneumatically filled with powdery substances are prone to overfilling. The resultant damage to the silo and its filter system as well as the consequential environmental pollution can lead to considerable cost, not to mention inherent damage to the operators.
The BS Overfill Security Sytem (a modular system) can be adjusted according to customers’ individual requirements. This offers varied possibilities for future extensions.
Basic unit:
Consists of a pinch valve with a solenoid valve, level probe, switchbox with warning light (filling in process/silo filled) and horn.
Supplementary unit # 1:
Fully automatic filter control system for mechanically cleaned filter (STAFI): Consists of a locking device plus corresponding control unit. The filter is cleaned for approx. 30 seconds before and after every coupling with a vehicle. During this time the pinch valve remains closed thus preventing the escape of dust particles.
Supplementary unit # 2:
Final surge limitation for mechanically cleaned filter: The pressure in the silo is supervised by a push-button switch. If the pressure in the silo gets too high during the filling, the pinch valve closes, which is indicated by a light. Afterwards it reopens.
Supplementary unit # 2a:
Final surge limitation for a pneumatic filter: The pressure in the silo is supervised by a push-button switch. If the pressure in the silo gets too high, the pinch valve closes for about 30 seconds to allow the filter a cleaning period. Afterwards it reopens.
Supplementary unit # 3:
Shows position of the pinch valve. The actual position of the pinch valve is displayed in the switchbox by means of a push-button switch. Simultaneously a defective rubber gasket can be recognised.
Supplementary unit # 3a:
Only in combination with supplementary unit # 3. Malfunction notification of defective rubber gasket in the pinch valve and of defective solenoid valve.
Supplementary unit # 4:
Security supervision by loss of air pressure: The air pressure in the supply line is supervised by a push-button switch. In case of air pressure decrease in the system, the pinch valve closes by means of a pressure accumulator. The fault is indicated in the switchbox.
Supplementary unit # 5:
Filling level control. The filling level is supervised in the accurately measured by means of a capacitive or a microwave-guided level indicator with a probe or the "weigh out" of the silo. The actual silo filling level is shown in a display unit. Caution: not for permanent maximum level control.
AFRISO, founded in 1869 by Adelbert Fritz in Schmiedefeld/Thuringia, is an innovative, medium-sized family-owned company with more than 1,000 employees worldwide - over 550 of them at our four German sites. Traditionally, we produce measuring and control devices for temperature and pressure. For more than 50 years, we have also been manufacturing measuring, control and monitoring devices for environmental protection.
Today, AFRISO is one of the competence leaders in the field of safety around heating and tank systems as well as an industrial partner in the field of pressure, temperature and level measurement technology. Trend topics such as "Smart Home" also have a tradition with us: we have been dealing with the topic of "event reporting in buildings" since 1997. The latest Smart Home generation has been sustainably developed further since 2012 and offers convincing sensors and actuators for building security, increasing living comfort or for a better indoor climate in your home.
- Overfill Protection | Level Measurement Technology | Level Indicators
- Overfill Protection
- Overfill Protection | Level Display Device | Level Indicators
- Overfill Protection | Limiting Value Transmitter
- Overfill Protection | Capacity Measurement Systems
- Overfill Protection
- Overfill Protection
- Overfill Protection | Level Indicators
- Overfill Protection | Limiting Value Transmitter | Level Measurement Sensors
- Overfill Protection | Tank Content Measuring Systems
- Overfill Protection | Level Probes | Fill Level Technology
- Overfill Protection | Limiting Value Transmitter
- Overfill Protection | Liquid Level Gauges | Level Indicators
- Overfill Protection | Level Measurement
- Overfill Protection | Level Monitors
- Overfill Protection | Level Measurement Technology | Level Display Device
- Overfill Protection | Level Measurement Technology | Level Display Device
- Overfill Protection | Level Measurement
- Overfill Protection | Level Measurement Technology | Level Display Device
- Overfill Protection
- Overfill Protection | Level Measurement
- Overfill Protection | Level Indicators | Level Monitoring
Intelligent mechanical engineering with high-quality process technology and the associated EMSR technology are planned and realized completely in-house in our own specialist departments. Especially for the pharmaceutical industry we supply qualified GMP and FDA compliant plants as a prerequisite for validation.
- Overfill Protection
- Overfill Protection
- Overfill Protection | Silo Overfill Protection
PTL Hermann GmbH develops and manufactures vibration type level switches for detecting the presence or absence of powdered or granular solids that are stored in all kinds of silos, hoppers and containers. The products get distributed worldwide.
Principle of operation:
a vibrating system gets forced to vibrate on its resonance frequency by a piezo crystal drive. If filling material, (bulk solids), covers the vibrating blade of the probe, its vibration gets damped. This is sensed by the electronic circuit and the output switches. When the blade gets uncovered due to declining level, the instrument restarts to vibrate and the output switches back.
Product Overview
LEVELSWITCH CV120 / CV130 / CV140 / CV150
Vibrating level switch for all kinds of powdered and granular solids. Applicable for heavy materials like cement as well as for light materials with densities down to 20 grams/litre. Grain size from powder to max. 40mm. Process connection 11/2", insertion lengths 172mm up to 20m.
STOCKTROL CV210 / CV310 / CV410 / CV510
Vibrating level switch for all kinds of powdered and granular solids. For heavy materials as well as for extremely light materials like styrofoam with densities even down to 10 grams/litre. Grain size from powder to max. 20mm. Process connection 11/2", insertion lengths 190mm up to 20m
CV600/CV660
Low-Cost vibrating level switches for grained and granular solids with minimum densities of 20 grams/litre (CV660: 50 grams/litre) and max. grain sizes of 10mm. Process connection 1", insertion length 157mm
SHT 120/130/140
Vibrating level switch for powdered and granular solids with high process temperatures up to 250°C. Process connection 11/2", insertion lengths 184mm up to 4m.
The instruments can be used for overfill protection, for high or low level alarm and in a special configuration for the detection of interfaces, e.g. sand that has settled in water (special model SEDIMENT).
The unique, patented single rod designs of our instruments make them work perfectly and reliably even at critical applications where conventional products cause problems due to bridge building, material build-up or rat holing.
- Overfill Protection | Liquid Level Gauges | Level Indicators
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