Showing posts with label Granzow. Show all posts
Showing posts with label Granzow. Show all posts

Tuesday, July 19, 2016

Operating Principle - Solenoid Valve


Solenoid magnetic field
A solenoid is an electric output device that converts electrical energy input to a linear mechanical force.

At the basic level, a solenoid is an electromagnetic coil and a metallic rod or arm. Electrical current flow though the coil produces a magnetic field, the force of which will move the rod. The movable component is usually a part of the operating mechanism of another device. This allows an electrical switch (controller) to regulate mechanical movement in the other device and cause a change in its operation. A common solenoid application is the operation of valves.

solenoid valve basic parts
Solenoid valve basic parts
A plunger solenoid contains a movable ferrous rod, sometimes called a core, enclosed in a tube sealed to the valve body and extending through the center of the electromagnetic coil. When the solenoid is energized, the core will move to its equilibrium position in the magnetic field. The core is also a functional part of valve operation, with its repositioning causing a designed changed in the valve operating status (open or close). There are countless variants of solenoid operated valves exhibiting particular operating attributes designed for specific types of applications. In essence, though, they all rely on the electromechanical operating principle outlined here.
A solenoid valve is a combination of two functional units.

  • The solenoid (electromagnet) described above.
  • The valve body containing one or more openings, called ports, for inlet and outlet, and the valve interior operating components.

Flow through an orifice is controlled by the movement of the rod or core. The core is enclosed in a tube sealed to the valve body, providing a leak tight assembly. A controller energizing or de-energizing the coil will cause the valve to change operating state between open and closed, regulating fluid flow.

Share your control valve requirements and challenges with an application specialist. Combining your process application knowledge with their product expertise will produce the most effective solutions.

Friday, May 6, 2016

Solenoid Valves - A Staple of Process Control

Stainless steel industrial solenoid valve
Series I Solenoid Valve
Courtesy Granzow
The Granzow line of fluid control products for industrial and commercial application includes an extensive array of solenoid valves that are suited for a wide variety of applications. The short video below illustrates the company's offering that covers a broad range of flow rates, orifice and connection sizes, materials of construction, and control options.

More detailed product and application information is available from product specialists. Share your application challenges and work together to develop the best solution.


Monday, December 14, 2015

Process Measurement - Tank Fluid Level Measurement

industrial magnetic level indicator
Industrial Magnetic Tank Level Indicator
Courtesy Granzow
Industrial process control often requires the storage of liquid in vessels or tanks. Continuous and accurate indication of the liquid level within the tank is an essential data point for safety and process control. There are a number of methods and instrument types utilized to provide tank level measurement, each with attributes that may be advantageous for a particular installation. Some of the selection criteria for a tank fluid level indicator may include:
  • Direct or indirect measurement of level
  • Tank shape, regular or irregular
  • Media compatibility with measurement device
  • Requirements for maintenance or calibration
  • Compatibility with process temperature and pressure range
  • Local display and visibility
  • Level indication signal type and transmission
  • Level alarm switches or other indicators
When the instrument of choice is a magnetic level indicator, also referred to as a magnetic level gauge, the selection has usually hinged upon one of this instrument's strengths. Its use for providing level indication has a number of positive attributes:
  • Continuous level measurement
  • Operable without electric power
  • Direct visual tank fluid level indication, regardless of tank shape or profile.
  • Wide range of operating temperature and pressure
  • Breakage resistant construction
  • Range of construction materials available to accommodate corrosive media
  • Measuring indicators, switches, and transmitters mounted externally, without contacting the medium being measured.
  • Low maintenance operation.
  • Readable level indication from greater distance than glass sight gauges.
  • Applicable to large fluid level ranges with a single instrument.
These process measurement devices have a strong position in the tank level measurement field and should be considered as a candidate for fulfilling those application requirements. I have included a technical data sheet from Granzow, one of several manufacturers of this type of instrument, so you can see more detail. Share your application challenges with a sales engineer that specializes in level measurement. Combining your process knowledge with their product application expertise will yield positive solutions.