Magnetostrictive Level Transmitter

Magnetostrictive level transmitter
Image courtesy Jogler, LLC

Physical properties of certain materials can be applied using ingenuity and creativity to create useful appliances. Magnetostriction, a physical property of ferromagnetic materials, produces a change in shape or dimension in the subject material when it is magnetized. This basic principle is integrated into a liquid level transmitter by extending a sensing wire along the interior length of a tube immersed in a process tank or other vessel containing the liquid to be measured. The transmitter pulses the sensing wire with an electrical current, creating an electromagnetic field. A magnetic float, travelling along the outside of the sensing tube, rises and falls as the liquid level in the tank changes. As the float moves along the length of the sensing tube, it creates a torsional stress in the sensing wire, starting at the position of the float, which matches the level of liquid in the tank. A sensing element converts the torsional stress in the wire to an electrical pulse. The transmitter measures the time differential between the initial pulse it sent down the sensor wire and the pulse resulting from the torsional stress and then calculates the position of the float and the liquid level.

These devices are very accurate and operate on a standard 2-wire loop. There are numerous options and variants that allow configuration for each application.

More information is included in the data sheet below. Your best source for current product and application information is a product specialist. Combining your process knowledge with their application expertise will produce the best outcomes.

Magnetostrictive Liquid Level Transmitter for Process Measurement and Control from Alliance Technical Sales, Inc.

Comparison of Digital and Analog pH Sensors

The video, produced by Mettler Toledo, provides a comparison of digital and analog pH sensors, particularly focused on operational and calibration procedures used for each. The digital version provides some real time saving advantages. Share you process measurement and analytical challenges with a process analytics specialist. Leverage your own knowledge and experience with their product application expertise to develop the best solutions for your operation.

Turbidity Measurement Tailored for Water Treatment Applications

Learn about the HF Scientific MTOL+ turbidimeter from this short video. Turbidity measurement is a common task in water treatment and water quality monitoring. Instruments designed for accuracy and easy of use, such as the MTOL+, can save time while producing reliable results. Notable features of the redesigned online instrument include:

• Primary calibration can be completed in less than 5 minutes.
• Low volume sample chamber enables quick response time.
• Field replaceable long lasting light source.
• Simple modular design with low maintenance burden
• No external controller needed.
• Bubble rejection system eliminates bubbles without delaying response time.
• Data logging and storage of 1 year’s measurement and calibration data
• Variable user-selectable logging interval from 1 to 60 minutes
• Download data via USB
• Software updates via USB
• Isolated 4-20mA output standard
• 4-20mA and RS-485 Modbus outputs simultaneously
• Ultrasonic cleaning standard

Watch the video, and share your water quality measurement requirements and challenges with process measurement specialists. Leverage your own knowledge and experience with their product application expertise to develop an effective solution.

Quickly Solve a Range of Freeze Protection Challenges With Pre-Assembled Self-Regulating Heating Cable

Pre-assembled self-regulating heat cable sets can speed
installation of freeze protection for piping systems.
Image courtesy BriskHeat Corp.

Heat tracing a pipe, from start to finish can be time consuming. Selecting the various components, starting with the heating cable itself, extends through termination kits, controllers, mounting hardware and other electrical hardware needed to put the heating system in operation. BriskHeat has a product that, for many applications, offers a very simple and quick solution.

Pre-assembled self regulating heat cable is available in two voltage ranges, two watt densities, and prefabricated lengths up to 150 feet. Each cable is terminated at each end, saving the installer time. The cable is flexible enough for a spiral installation or to wrap around valves in the piping system. The self regulating aspect of the cable negates the need for a controller and power switching devices. Assemblies targeted for 120 volt applications are provided with a factory installed plug. The 208-277 volt cables will arrive with bare wire leads for installation of a customer provided connector. The cable can be easily installed using fiberglass or aluminum tape. Suitable insulation applied over the finished work will improve the performance of the heating system.

Share your heat trace and freeze protection challenges with industrial heating specialists, leveraging your own knowledge and experience with their product application expertise.

Pre-Assembled Self-Regulating Heating Cable from Alliance Technical Sales, Inc.