Indication units

The Alfa Laval Indication unit - Inductive is an electrical feedback unit that offers cost-effective operation and standard functionality for automated indication on the inductive side of Alfa Laval butterfly valves. Straightforward and easy to use, this valve position indicator provides information about valve operating status 24/7 while boosting productivity.

Basic information about the position of valves used in hygienic applications

Durable and cost-effective
Precision operation
Long service life
Easy to operate

This valve position indicator is compatible with any programmable logic controller (PLC) with a PNP/NPN
interface. The electrical indication unit is designed with inductive sensors for use with Alfa Laval butterfly valves in hygienic applications across the dairy, food, beverage, biotechnology, pharmaceutical and many other industries.

How does the indication units work?

Inductive proximity sensor

This non-contact proximity sensor is commonly used as a valve position indicator and consists of an oscillator, which creates high-frequency electromagnetic fields that radiate from the sensing face. Each time a conductive metal (damping target) approaches the sensor, it reduces the electromagnetic field, thus changing the voltage of the oscillator. A trigger circuit converts this analog signal into an on/off digital signal and amplifies the output to 24VDC. Inductive proximity sensors are widely used for valve indication and are suitable for integration with valve position sensors in various industrial applications, including indicating butterfly valve positions.

Hall proximity sensor

This non-contact proximity sensor consists of a Hall transistor, which converts Hall sensing into an on/off digital signal and amplifies the output to 24VDC. The sensor indicates the valve position by using a magnetic field (North Pole) to measure the distance from the relative position of the indication pin on the valve stem. Hall proximity sensors are often used as valve position sensors, especially for indicating butterfly valve positions, providing reliable valve indication in automated systems.

Namur sensor

NAMUR is most associated with two-wire DC proximity sensors, which are often used for valve position indication in hazardous environments. Such sensors must be wired to isolator barriers or intrinsically safe devices. The NAMUR proximity sensor’s operation is similar to that of a variable resistor. As a metal target approaches the face of the NAMUR sensor, a change in impedance in the sensor occurs and, therefore, the current draw of the sensor is reduced. This triggers the galvanic isolator’s amplifier, which activates the isolator’s switch and thereby provides an on/off digital output signal to the PLC system. NAMUR sensors are suitable for use as valve position sensors, including for indicating butterfly valve positions.

Safe, reliable, and economical valve indication

Alfa Laval indication units are cost-effective digital devices with up to two feedback signals that are mounted directly on the valve yoke, providing reliable valve indication and feedback on the valve’s open/closed position. These valve position indicators (side indicator and brackets) may be used on any Alfa Laval valve, but are especially competitive solutions for Alfa Laval SSV single seat valves, mixproof valves (brackets), and for indicating butterfly valve positions. These units serve as essential valve position sensors in automated process systems.

Individual brackets and inductive valve position sensors

Alfa Laval offers an extensive portfolio of brackets and inductive valve position sensors for use with any Alfa Laval valve that requires special support or an alternate sensing interface. These sensors are ideal for precise valve indication and can be used for indicating butterfly valve positions as well as other valve types.

Options

Sensors with and without fixed cable and side indicators with M12, 5-pin plug connectors, including the plug counterpart, are available for connection to AC/DC power supply. These options ensure flexible integration of valve position sensors and reliable valve indication in various process environments.

Каталог „На една ръка разстояние“

Продуктовият каталог „На една ръка разстояние“ за хигиенно оборудване включва листовки за продукти, връзки към анимации, брошури и списъци за поръчки.

Намерете продукт на Alfa Laval

Портал за компютърно проектиране (CAD)

Порталът CAD на Alfa Laval е основна платформа за изтегляне на подробна информация за продуктите, 2D чертежи, както и 3D модели на продукти.

Посетете CAD портала

Услуги

Нашата специално изградена глобална мрежа от сервизни центрове ви осигурява с резервни части и експертиза, независимо къде се намирате и кога имате нужда от тях. Като ви гарантираме по-продължителен период на безотказна работа, достъпност и оптимизация, ние ще ви помогнем да работите спокойно и да увеличите максимално възвращаемостта на своите инвестиции. Ще ви помогнем да интегрирате нашите сервизни услуги чрез Споразумение за сервизни услуги на Alfa Laval за предсказуема и безпроблемна работа на оборудването.

Научете повече за нашето предложение за обслужване Отстраняване на неизправности

Резервни части Техническа поддръжка

Търсене на сериен номер Сертификация

How can we help you? Моля, свържете се с нас за всякакви запитвания или въпроси.

Свържете се с нас

Посетете приложния и иновационен център

Application and Innovation Centre_Kolding_Customer test centre_640x340x2.png

Искате ли да идентифицирате оптималното оборудване за конкретната задача и да набележите осезаеми икономии, преди да вземете решение за обновяване? Приложният и иновационен център на Alfa Laval е място, където можете да направите точно това.

Научете повече

Optimize™ на Alfa Laval

Optimize™ на Alfa Laval подобрява вашите съществуващи процеси и позволява до 90% икономии на вода, енергия и химикали – при това единствено с малки и изцяло безрискови инвестиции.

Прочетете повече