Tuesday, January 29, 2019

Industrial Automation and the Implementation of Wireless Technology

The use of wireless technology in industrial automation systems offers a number of potential benefits, from the obvious cost reduction brought about by the elimination of wiring to the availability of better plant information, improved productivity and better asset management.

However, its practical implementation faces a number of challenges: not least the present lack of a universally agreed standard. This article looks at some of these challenges and presents the approach being taken by Yokogawa.

Download Your Copy Of "Wireless Technology In Industrial Automation" here.

Saturday, January 19, 2019

Understanding the Operation of Thermal Mass Flow Controllers


In this video, Brooks Instrument presents the operation of thermal mass flow controllers.

Mass Flow Controllers are also referred to as MFCs. The basic construction of mass flow controllers consists of four main components. A body, a thermal sensor, a printed circuit board and a magnetic control valve. As gas enters the flow body, a laminar flow element or restrictor diverts precise portion of the gas to pass through the thermal sensor. The thermal sensor is the heart of the mass flow controller, and consists of a bypass tube fitted with a heater element and two temperature sensors. As gas enters the sensor bypass tube, the upstream and downstream temperature sensors measure the temperature differential between gas entering the bypass tube and exiting the bypass tube. 

When choosing an MFC supplier, consider whether the manufacturer provides a zero stability specifications, also known a sensor stability. This indicates the devices ability to maintain accuracy over time. Good sensor stability ensures the MFC delivers highly accurate and consistent results with less frequent recalibration or replacements needed. A stable, accurate sensor guarantees stable, accurate process control. As the thermal sensor measures the change in flow temperature,  it sends a signal to the circuit board, which interprets the data into flow output and compares it to the set point received from the user set point signal. If the set point, or required value, is higher than the measured value or flow output, the controller will open the control valve, letting more flow through. If the set point is lower than the flow output, the control valve will close, decreasing flow. This happens when a coil inside the magnetic control valve sends an electrical current around a valve stem, which moves the valve plunger by thousands of an inch. The circuit board is the brain of the device, so pay close attention to the electronics and firmware architecture when evaluating an MFC. The device should have the ability to support advanced alarms and diagnostics to monitor and correct issues before the overall process is negatively affected. Check to see what built in alarms and diagnostics are available. 

Brooks Instrument devices support not only flow output, but additional alerts like flow totalization, valve drive, plugged flow and calibration. All of Brooks devices are tested as complete systems to ensure robust and accurate operation and are calibrated to international standards. Contact Flow-Tech to learn which solution is right for your process.

Flow-Tech, Inc.
https://flowtechonline.com
410-666-3200 in Maryland
804-752-3450 in Virginia

Wednesday, December 12, 2018

Happy Holidays from Flow-Tech!

All of us at Flow-Tech wish our customers, partners, vendors and friends a very Happy Holiday Season and a wonderful 2019!


Tuesday, December 11, 2018

New Product Alert: Hoffer Flow Controls HIT-4G Gas Flow Rate Indicator & Dual Totalizer With Modbus & Data Logging

Hoffer HIT-4G
The Hoffer HIT-4G is a microprocessor-based gas flow rate indicator and totalizer with data logger and Modbus Communications Protocol.  The HIT-4G provides temperature and pressure compensated gas flow measurement. Featuring a 6-digit rate display and separate 8-digit resettable and non-resettable flow totalizers, the HIT-4G is configurable for 4-20 mA loop power or DC power. The instrument can accept a low-level signal from a magnetic type pickup coil, a DC pulse signal, contact closure or modulated carrier pickup (MCP/RF). Pulses from the signal input are converted into volume and rate values based on flowmeter calibration settings stored in the instrument. Temperature, pressure and compressibility compensation may be used to calculate corrected volume and mass flow. The total and flow rate are displayed on a two-line liquid crystal display (LCD). A 4-20 mA analog signal proportional to the flowrate is output on the current loop. The HIT-4G is configurable from the instrument front panel keypad or via Modbus communications.

Download the HIT-4G Users Manual Here

Contact Flow-Tech, Inc. for more information.
In Maryland: 410-666-3200
In Virginia: 804-752-3450
https://flowtechonline.com

Wednesday, December 5, 2018

FLEXIM Clamp-on Ultrasonic Flowmeters - Expert Testimonial for Municipal Water Treatment Pumping Systems


This video offers expert testimonial of the advantages of the FLEXIM clamp-on ultrasonic flowmeter for use on pumping systems installed in municipal water treatment facilities.

Pumps are one of the main energy consumers within industrial and manufacturing environments. It is thus crucial to regularly test their performance and efficiency.

For simple pump control it is sufficient to measure the flow rates with a portable, non-invasive FLUXUS ultrasonic flow meter and to observe the pressure by reading from the permanently installed pressure gauges.

For more comprehensive pump audits, special measuring systems are available which can also be used to record pressure, temperature and consumed electricity. However, the FLUXUS clamp-on flow meters are still the central device used.

Documenting such actual load profiles regularly opens up huge potential for savings; in most cases by initially adjusting a pump to the correct dimensions.

Flow-Tech, Inc.
https://flowtechonline.com
410-666-3200 MD
804-752-3450 VA

Tuesday, November 27, 2018

$2000 Undergraduate Engineering Scholarship Sponsored by Brooks Instrument

Brooks Instrument is a world leading manufacturer of  flow control and measurement equipment based in Hatfield, PA.

As a gesture of their commitment to the upcoming generation of engineers, Brooks Instrument has established a $2,000 scholarship for a qualified undergraduate student enrolled in an engineering program at an accredited college or university.