The TECO Process Control Blog

Impact Weighers - Principle of Operation

Impact weighers are in-line instruments used for weighing of bulk materials. They are designed to measure the force generated by the impact of flowing material on a sensing plate. This force creates a mechanical deflection as it impacts the plate. This deflection is measured by a sensor and converted into an electrical signal. That signal is then processed by an electronic controller, which displays the flow rate and total weight.

Impact weighers are designed so that the impact plate can only move horizontally. This means that from the total impact force “Fi,” only the horizontal component “Fh” is measured. In the diagram above, “Fv” is ignored. This guarantees that changes in the weight of the sensing plate, due to material build-up or sensing plate wear, will not affect the zero or accuracy of the system.

Impact Weighers components
(Thermo Scientific Ramsey)

Advantages:

Easy installation in difficult process environments
Measurement is not affected by changing the impact point on the sensing plate • Build-up on the sensing plate cannot influence the zero point
High reliability and low maintenance
Mechanical damping system absorbs shocks and damps vibration
Sensor allows some overload withoutdamage to the system
Sensor is located in a dust-tight enclosureexternal to the process stream
Operates accurately in pulsating or surging flows

To learn more, download the Ramsey DE10 and DE20 Impact Weigher brochure here. For more information, contact TECO by visiting https://teco-inc.com or by calling 800-528-8997.

Thank You To Our Customers - A TECO Crawfish Boil

TECO occasionally hosts crawfish boils at our customers' facilities. We think this is a great way to say thanks and to do something a little out of the ordinary for them. It gives everyone an opportunity to get to know each other, tell a good story and maybe have a laugh or two - all around some really great food.

Thompson Equipment Company

Flow Meter Remanufacturing, Custom Flow Solutions, Full Service Repair, Calibration, and Valve Automation Center. http://www.teco-inc.com | 800-528-8997

New Smart Valve Sensor Provides Preventive Maintenance Diagnostics on Quarter-Turn Valves

The ifm MVQ101 Smart
Valve Monitor

Good news for valve automation companies. ifm’s new smart valve sensor, the MVQ101, provides continuous position feedback and preventive maintenance diagnostics on quarter-turn valves. The sensor features built-in functions that can identify different wear conditions via IO-Link, ifm’s digital communication interface. For example, the sensor can indicate a change in the valve’s operation, which can be a warning that deposits are interfering with the valve’s ability to close or that the seal is wearing.

https://teco-inc.com
800-528-8997

Remanufactured Process Instruments Save You Money, Resources and Time

TECO is the world's largest remanufacturer of magnetic flow meters, instrumentation and valves. Their secret is the combination of experience, trained technicians and facilities. TECO can remanufacture virtually any process instrument or valve. Every remanufactured item meets or exceeds the original OEM specifications and performance standards.

Send TECO your worn-out flowmeters, instruments and valves and get them back as good as new (or better)!

Thompson Equipment Company
https://teco-inc.com
800-528-8997

Severe Service Flowmeters by TECO

For flow measurement of extremely abrasive slurries in Mining, Dredging, Fracing, and Oil and Gas Exploration.

Capabilities include:

Liners: magnesia stabilized zirconia ceramic, aluminum oxide ceramic, polyurethane rubber, neoprene rubber, Linatex, Teflon (PTFE), rotationally molded Tefzel (ETFE), PFA, and others.
Electrodes: SS, Hastelloy C (C-276), Hastelloy B, zirconium, titanium, platinum/iridium, solid tungsten carbide, tungsten carbide coating, etc.
Exotic tube constructions available (100% titanium).
Specialty Coatings: epoxy paints, powder coat, custom colors, etc.

TECO

https://teco-inc.com

800-528-8997

Happy 4th of July from Thompson Equipment Company

"The United States is the only country with a known birthday. All the rest began, they know not when, and grew into power, they know not how.... There is no "Republican," no "Democrat," on the Fourth of July, — all are Americans."

James Gillespie Blaine

ABB Rotameter (Variable Area Flow Meter) Application Notes

The Variable Area Flowmeter is an instrument for measuring the flow of liquids and gases in pipelines. It includes a vertical tube through which the fluid flows whose diameter increases from the bottom to the top and a float which can move vertically in the tube.

As the flow increases this float moves to a higher position until its resistance to the fluid flow is balanced by the float’s buoyed weight in the fluid, a value which is constant and independent of the flowrate. The position of the float is a measure of the flowrate. The flowrate values can be read on a scale.

Here is a listing of applications where rotameters (variable area flow meters) are commonly used and links to where their PDF documents can be downloaded.