External Sensor for Positioner

  Enquiry / contact me

Space saving solution for small valves

Measurement & Instrumentation

External Sensor for Positioner
External Sensor for Positioner

Small control valves are often used in research facilities. Typically, the available installation space is limited in such systems and the dimensions of commercially available positioners are often not suitable for mounting on micro flow valves. For this reason, Schneider Electric developed an external sensor for the new positioner SRD998. This sensor allows for an ideal connection to the Badger Meter small control valves. The existing, patented mounting kit from Badger Meter could be incorporated. Due to the decoupled and self-adjusting coupling, a spring preload of the tap can be dispensed with. As a result, no lateral forces are introduced into the valve guiding. 

Save sensor connection

To prevent differences in electrical potential, the connection to the valve system is conductive. The valve and stroke sensor unit are therefore combined and electrically grounded. The sensor is supplied with a pre-assembled cable. The connection to the positioner is made with a screwed plug. This connection avoids exchanging terminals and can be intrinsically safe. The longer pneumatic connection from the positioner to the valve drive is not a factor that needs to be considered. With the normal dimensioning of this compound, the pressure-bearing total volume increases only slightly. The compact design of the sensor makes it much easier to access the packing or other parts of the valve. Very good control behaviour, an optimal rotation angle of the potentiometer and small control valve small valve lifts can be achieved. The positioner itself can also be attached to a more suitable point in the system. The visual inspection and operation of the controller is therefore also easier to undertake.  

This concept has an added benefit in that it can also be applied to other types of positioners. A uniform interface from external sensors to positioners can be created. In the case of very small control valves, a connection to very voluminous, pressure-encapsulated positioners is considerably simplified.
 

Posted on April 12, 2019 - (636 views)
Badger Meter Europa GmbH
Nürtinger Str. 76
72639 Neuffen - Germany
+49-7025-92080
+49-7025-920815
View full company profile
Location
Related articles
User-Friendly and Versatile Flowmeter Line
ATEX/IECEx/CCC-IS Certified Rugged Pyrometers with HART interface integration
Monitoring of Gas Scrubbers by Means of Sonic Velocity
Switching Without Touching
“We can provide resourceful collaboration with customers by providing new or alternate perspectives to solving known or unrecognized challenges.”
Solid-State, Optical Dissolved CO₂ Sensor
External Powder Flow Sensor
Smart Positioner with HART Communication
Draw Wire Sensor for Level Measurement
Pressure Sensing with Functional Safety
The Ultimate Solution for Temperature and Gas Monitoring
Absolutely Efficient. JUMO dTRANS T09 Cable transmitter for temperature.
FLIR GF 77. The Groundbreaking, Affordable OGI Camera
Our Solutions, as Individual as You.
On-line Turbidity Measurement
The Groundbreaking, Affordable OGI Camera
PCNE Offers You a Free Ticket to Hannover Messe: Scan the QR-Code.
Our Solutions, as Individual as You.
Transformation is Everywhere.
The Ultimate Solution for Temperature and Gas Monitoring
External Powder Flow Sensor
Pressure Sensing with Functional Safety
Commercial Food Processing
Glass vial and syringe production
Critical Asset and Safety Solutions
Thermal Profiling Systems
Infrared Temperature Solutions
Robust Differential Pressure Transmitter
Easy to Install Gas Detection Solution
Hermetic Pressure Sensors with High Accuracy
Commercial Food Processing
Glass vial and syringe production
Critical Asset and Safety Solutions
Thermal Profiling Systems
Infrared Temperature Solutions
Sensor for Easy Condition Monitoring
Flowmeter for the Precise Detection of Media Changeover
Combustion Gas and Emissions Analyzer
Air / Gas Thermal Mass Flow Meter
Ultrasonic Flow Meter ES-FLOW