Monday, November 11, 2019

Today We Celebrate Our Veterans

Veterans Day

Veterans Day is a day of observance and celebration for those who have served in the United States military. Veterans Day was originally called Armistice Day because of the November 11 Armistice that ended World War I. In 1954 it was officially changed to Veterans Day to include Veterans of all wars. This holiday honors those who took an oath to defend the United States and our Constitution, from all enemies, foreign and domestic. Through the observance of Veterans Day, we remind ourselves of our Veterans patriotism, love of country and willingness to serve and sacrifice for the common good.

Flow-Tech thanks our Veterans, past and present, for serving our country and protecting our freedom.

Sunday, September 8, 2019

Did You Know Flow-Tech Offers On-site Service?


The Flow-Tech Field Service Department can install, calibrate, repair and replace your process control instrumentation and control valves. With a focus on detail and "doing it right," a Flow-Tech service technician will get the job done on time, and on budget.

Flow-Tech offers the following on-site services:
  • Certified Gas Detection Service and Calibration Contracts
  • Flow and BTU Surveys
  • On-Site Troubleshooting
  • Maintenance Service Contracts
  • Instrument Start-up & Calibration
  • Flow and Data Acquisition Rentals
Flow-Tech, Inc.
410-666-3200
flowtechonline.com

Monday, August 19, 2019

Chlorine Gas Flow Meter in Chlorinator System

FCI Model ST100L

Chlorinators are a frequently used system for water disinfection in municipal and industrial water treatment processes.

Problem

The chlorinator system’s flow measurement system was drifting which resulted in poor control over the amount of chlorine being used. The system was initially supplied with simple, site-gauge rotameters and later, for automation and control, differential pressure (dP)-type orifice plate flow meters were added. The dP meters were continuously drifting out of calibration and could not be relied upon to accurately signal the chlorine dispensing control system.




Flow Conditions

  • Pipe diameter: 1 ʺ [DN25]
  • Flow rate: 150 lb/day to 2,000 lb/day [68 kg/day to 907 kg/day] Temperature: 60 °F to 100 °F [16 °C to 38 °C]
  • Pressure: 0 psig to 10 psig [ 0 bar(g) to 0.7 bar(g)]
  • Media composition: Chlorine gas
  • Straight run: Limited, inadequate
  • Flow range encompasses transitional region

Solution

FCI Model ST100L constant power technology thermal flow meter was installed in the chlorine gas inlet line to the chlorinator panel. The flow body included built-in Vortab ® flow conditioner to overcome both lack of straight-run and transitional flow region to provide repeatable flow profile and accurate measurement. The ST100L sensor element and flow body, including Vortab flow conditioner, are fabricated of Hastelloy C-276 for protection and long service life in highly corrosive chlorine. Because chlorine gas is a safety issue for calibration labs and air equivalency calibrations for chlorine are inadequate, FCI provided on-site start-up assistance which included calibration adjustments based on the site’s rotameter measurements.

For more information in Maryland, Washington D.C. or Virginia, contact Flow-Tech, Inc. They can be reached by calling 410-666-3200 in Maryland, or 804-752-3450 in Virginia. You can also visit their web site at https://flowtechonline.com.

Reprinted with permission from Fluid Components, Inc.

Tuesday, July 30, 2019

Explosion Proof Transmitter for the Detection of Combustible Gases


The Dräger Polytron® 8700 IR is an advanced explosion proof transmitter for the detection of combustible gases in the lower explosion limit (LEL). It uses a high performance infrared Dräger PIR 7000 sensor, which will quickly detect most common hydrocarbon gases. Besides a 3 wire 4 to 20 mA analogue output with relays, it also offers Modbus and Fieldbus making it compatible with most control systems.

Benefits
  • With its stainless steel 316L enclosure and drift free optics, the Dräger PIR 7000 is built for the harshest industrial environments such as offshore installations.
  • The Dräger Polytron 8700 is equipped with digital interfaces allowing for quick and easy remote interrogation of the transmitter’s state.
  • The Dräger Polytron 8700 belongs to the Polytron 8000 series. All transmitters in this series have the
  • same design and user interface. 
  • Upon request, the Dräger Polytron 8700 can also be supplied with three integrated relays. 
  • Polytron 8700 features a Class I, Div. 1 rated explosion proof enclosure made from aluminium or stainless steel, making it suitable for a wide range of environmental conditions.
  • An available remote sensor condulet housing allows the PIR sensor to be installed up to 30 metres (100 feet) away from the Polytron transmitter.
  • The Polytron 8700 has a data logger, which records measuring and event data from the past years.
For more information about Dräger products, contact Flow-Tech, Inc. They can be reached by calling 410-666-3200 in Maryland, or 804-752-3450 in Virginia. You can also visit their web site at https://flowtechonline.com.

Wednesday, July 17, 2019

Energy Metering Through Flow Measurement in District Energy Systems

Energy Metering in District Energy

Modern power plants operate according to the environmentally friendly principle of combined heat and power (CHP), where electricity and heat are generated in a single process. Combined heat and power utilizes wasted heat from electric generation to increase the efficiency of power plants. In many cities the heat is transported in the form of hot water via pipelines to the respective districts. Implementation of CHP is often driven by reliability requirements for critical facilities such as hospitals, data centers, or research labs. Flow and thermal energy metering at these pipelines is crucial for fulfilling their safety functions in case of necessary line shut downs, as well as for network balancing and pump regulation.

Energy Metering in District EnergyWhether you are running an entire facility, optimizing a central power plant or developing a plant for the next expansion of your campus, precise measurement of existing utilities is essential in making the choices necessary to operate your present scheme or designing for future needs. Accurate flow measurement starts with the selection of the correct technology for the implementation, the correct installation of the meter and controllers, with the return of the data to the building automation system (BAS) and energy management software (EMS).

Goals for an Efficient Energy Metering Scheme
  • Reduce energy costs
  • Measure energy use
  • Improve reliability of system
  • Improve space conditions
KEP Flow Computer
KEP Flow Computer
The flowmeter and flow computer are ideal for metering energy consumption in heated / chilled water and steam applications, and are often teamed together to provide an accurate system that provides mass flow information, corrects volume flow, and computes heat flow. This data is then provided to the BAS/EMS for further analysis.

A flow computer is a special purpose device which computes a corrected flow based on information derived from raw input signals and stored sensor and fluid properties information.

A number of flow metering devices are available, each having strengths and weaknesses in connection with specific applications. The types include:
Many of these flow sensors require linearization from the flow computer to improve accuracy. The flow computer is also used for data logging, communication, remote metering, alarming and control functions.

New standards require that measurement devices be installed to monitor the electrical energy use for total energy used for heating, ventilating, and air-conditioning (HVAC) systems. Working with experts who fully understand the accuracy, reliability, and affordability of the flow metering equipment is critical to a successful implementation.

For more information, contact Flow-Tech, Inc. by calling 410-666-3200 in Maryland or 804-752-3450 in Virginia. Or, stop by the website at https://flowtechonline.com.