About us
Investors
Home
Products
Indication units
Fluid handling
Automation
Career
Media
Suppliers
Here Magazine
Alfa Laval Anytime
Share
Indication
IndiTop
Documents
Related industries
Related services
Cost-effective digital devices Precision operation Long service life Alfa Laval indication units are cost-effective digital devices with up to two feedback signals that are mounted directly on the valve yoke, which provide feedback on the valve’s open/closed position. These valve position indicators (Side indicater and brackets) may be used on any Alfa Laval valve, but are especially competitive solutions for Alfa Laval SRC/ARC Single seat valves,and mixproof valves (brackets), and butterfly valves.
Food logic
Alfa Laval offers these standard valve position indicators for hygienic industries:
This lightweight, electromechanical device offers precision operation and long service life. Hermetically sealed within a corrosion-resistant housing, the micro-switch provides high durability and may be directly manipulated, which means only limited operational safety can be provided compared to newer, more advanced technologies.
Based on principles of electromagnetic conductivity and metallic detection, this non-contact electronic sensor is inherently resistant to dust, humidity and oil in industrial environments. This increases operational safety and reliability.
Latest 'Close at hand' online version Find an Alfa Laval product
Based on principles of electromagnetic conductivity and magnetic detection, this non-contact electronic sensor provides safe and accurate detection of valve position compared to conventional proximity sensors. It provides enhanced reliability and longer service life for valve position sensing in any operating environment.
This inductive proximity sensor, complete with bracket for butterfly valves, requires minimal energy to operate. It is an ATEX-certified device designed for intrinsically safe applications and may be used in hazardous and potentially explosive environments.
Alfa Laval offers an extensive portfolio of brackets and inductive sensors for use with any Alfa Laval valve that requires special support or an alternate sensing interface. For more information, please refer to Documentation.
NAMUR is most associated with two wire DC proximity sensors. Such sensors must be wired to isolator barriers or intrinsically safe devices in order to be Mechanically activated by a roller leaf, this electromechanical device requires physical contact to engage and sends an electrical signal to indicate valve positions as an on/off digital signal. The Micro-switch is distinguished from other sensor principles because the electrical circuit can operate at higher voltages that exceed 24VDC, or work with AC alternating voltages.
This non-contact proximity sensor consists of an oscillator, which creates highfrequency 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
used in hazardous environments. 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 into an on/off digital output signal to the PLC system.
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.
circuit converts this analog signal into an on/off digital signal and amplifies the output to 24VDC.
This non-contact proximity sensor consists of a Hall transistor, convert this 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.
Download the product models in Neutral or Native
Visit the animations site and take a look inside a
CAD file formats. It is also possible to download
product to see and understand how it works.
3D PDF files.
View animations
View CAD portal
Learn more
To keep you updated on important sustainability issues and opportunities in your industry and processes. Keep your hygienic valves in tip top condition
Learn more
Alfa Laval offers a comprehensive range of automation intended for hygienic applications in the dairy, food, beverage,home care, personal care, biotechnology and pharmaceuticals. Alfa Laval Indication units Alfa Laval IndiTop For a broader automation range, explorer the different product categories: control unit and indication units.
Quick links
Most popular industry pages
About us
Marine
Media
Hygienic food equipment
Career
Marine oil treatment
Investors
Oil and gas
Here magazine
Dairy processing
Alfa Laval Anytime
Alfa Laval's
Most popular product pages
international
Alfa Laval gasketed plate heat
customer
exchangers
magazine, Here, contains customer
Alfa Laval UltraPure fittings
references and
Alfa Laval LKH
solutions, products
Alfa Laval LKB Butterfly
and applications, technologies,
Alfa Laval SRU
events, projects and trends in Alfa Laval related industries.
Modern Slavery Act
www.alfalaval.com
Change country
+46 46 36 65 00
[email protected]
Follow
ALFA LAVAL
Cookies policy
Legal terms and conditions