Control top T.VIS® E-20

The T.VIS® E-20 is the perfect control top to be used in explosive gas and dust atmospheres.

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Control top T.VIS E-20

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.

Features

Proven housing technology and standardization of component use
Highest protection class as standard
High vibration and shock resistance
Easy commissioning
2-color 360° status identification
Certifications for worldwide use

Structure

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.

Position detection

Two manually adjustable sensors for detection of the valve positions for start/safety and end position.

Settings

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.

Visualization

LED display

green: valve in non-actuated position
yellow: valve in end position

Field of application

Approved for use in the following applications:

Type of conformity	ATEX/UKEX/IECEx/CCCEx/HazLoc (NEC/CEC)
Application
Gas	(II 2G) Ex ia IIC T4…T5 Gb Class I, Zone 1, AEx ia IIC T5...T4 Gb Class I, Division 2, Group A, B, C, D, T5...T4
Ambient temperature	-10 °C ≤ Ta ≤ +42 °C
Dust	(II 2D) Ex tb IIIC T85 °C Db Class II, Zone 21, AEx tb IIC T85 °C Class II, Division 2, Group F, G, T85 °C
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

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, HazLoc (NEC/CEC)

Valve and plant automation

The degree of automation in production systems in the food, dairy, pharma and beverage industries is ever on the rise. In the course of the fast digital development towards Industry 4.0 and Internet of Things, digital control tops are becoming indispensable components of future process plants.

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