Control and Feedback Systems
The T.VIS® E-20 is the perfect control top to be used in explosive gas and dust atmospheres.
The T.VIS® E-20 is specially designed to meet the requirements of the liquid processing industry as well as dust explosion protection. In addition, all components of this control top are standardized to the utmost degree. This ensures the simplest and most time-saving handling with high reliability and safety. The technology of the T.VIS® E-20 is based on two separate, magnet-based sensors combined in one sensor module. They are used to detect the valve position and provide the corresponding feedback signals for automated plant operation. The sensor module also provides the optional connection for the pilot solenoid valves to control the valve actuators.
The T.VIS® E-20 has 2 position sensors integrated in a compact module as standard. The LEDs, which are also integrated, enable status identification by means of the illuminated dome incorporated in the control top cap. The required cabling by the customer to the necessary operating equipment and therefore ensuring the intrinsically safe operation of the control top is achieved by direct wiring to internal spring-loaded terminals, both for the feedback signals and for the valve activations. The supply air connection is equipped with a replaceable filter to protect the built-in solenoid valves.
Two manually adjustable sensors for detection of the valve positions for start/safety and end position.
The sensors are mounted on guide blocks and can be individually adjusted over the entire stroke of the valve via two threaded spindles integrated in the sensor module.
LED display
Approved for use in the following applications:
Type of conformity | ATEX/UKEX/IECEx/CCCEx |
Application | |
Gas | (II 2G) Ex ia IIC T4…T5 Gb |
Ambient temperature | -10 °C ≤ Ta ≤ +42 °C |
Dust | (II 2D) Ex tb IIIC T85 °C Db |
Ambient temperature | -10 °C ≤ Ta ≤ +38 °C |
All certifications are based on use in gas and dust atmospheres, covering the requirements for equipment category 2 (EPL b).
Technical data of the standard version | ||
Position detection | Magnetoresistive proximity switches | |
Housing material | PA 12/L | |
Air supply | Pressure range | 2 to 8 bar |
Standard | acc. to ISO 8573-1:2010 | |
Solid content | Quality class 6 | |
Water content | Quality class 4 | |
Oil content | Quality class 3 | |
Dimensions of air connections | Metric 6/4 mm, inch 6.35/4.31 mm (¼") | |
Protection class | IP 69 | |
Sound pressure level
via exhaust air throttle | Max. 72 dB | |
Visualization | LED (green, yellow) | |
Certificates | ATEX, IECEx, UKEx, CCCEx |
Equipado com um sistema de medição do caminho de alta precisão, o T.VIS® A-15 oferece um reconhecimento automático da posição de abertura/fechamento de qualquer válvula da GEA, que pode ser equipado com um cabeçote de controle T.VIS®.
A parte superior de controle GEA T.VIS® M-20 oferece toda a gama de funções de controle modernas necessárias na maioria dos pontos de aplicação, além de vantagens adicionais em termos de comissionamento de válvulas automatizado e gerenciamento eficiente do equipamento.
O T.VIS® P-15 é um controlador de posição compacto para válvulas de processamento pneumáticas. A posição é detectada por um sensor de posição e ajustada por duas válvulas solenoides integradas.
Conexão 0, INA, LAT