Showing posts with label Maryland. Show all posts
Showing posts with label Maryland. Show all posts

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

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.

Thursday, October 25, 2018

Portable Industrial Gas Analyzers

SERVOFLEX portable analyzers deliver high performance gas analysis in hazardous and non-hazardous areas. Using the same precision sensing technology of Servomex fixed analyzers, these ergonomically designed, easy to use portable analyzers provide compact, precise and reliable gas analysis in a wide range of applications from labs and plants to food production and universities.

The portable product line includes:
  • Micro i.s. 5100 - Intrinsically safe analyzer measures oxygen, carbon monoxide or carbon dioxide
  • MiniFoodPack 5200 -  Benchtop analyzer for checks / quality control in Modified Atmospheres Packaging
  • MiniHD 5200 - Resilient IP65 analysis of oxygen, carbon monoxide and carbon dioxide in industrial applications
  • MiniMP 5200 - Benchtop analyzer offering single or dual measurements of oxygen and carbon dioxide
For more information, view the video below. Contact Flow-Tech in Maryland and Virginia with application questions. They can be reached at 410-666-3200 in Maryland, 804-752-3450 in Virginia, or by visiting https://flowtechonline.com.

Saturday, September 29, 2018

The Hoffer Flow Controls HIT-4U Flow Rate Indicator and Totalizer

HIT-4U
The HIT-4U, manufactured by Hoffer Flow Controls, is a battery, DC or loop-powered microprocessor-based flow rate indicator and totalizer with data logger and Modbus Communications Protocol. 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. The total volume 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-4U is configurable from the instrument front panel keypad or via Modbus communications.

For more information, download the HIT-4U Flow Rate Indicator and Totalizer Users Manual here, of view the manual in the embedded viewer below.

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

Saturday, June 9, 2018

Maryland, Washington D.C., and Virginia's Premier Process, Control, Test & Measurement Representative

Process, Control, Test & Measurement Representative

Flow-Tech, Inc.

Providing applications expertise and engineering support for Power and Chemical plants, OEM’s,
System Integrators, Municipalities, Engineering Firms, Universities, Medical Centers, and Research / Metrology Labs.

Specializing in:

Process Instrumentation

Flow, Data Acquisition & Control Instruments, Gas Detection, Analyzers, Level Control & Measurement, Pressure & Temperature Indicators and Transmitters, Vibration - Asset Condition Monitoring , Indicators & Energy Flow Computers

Pressure Relief, Tank Blanketing and Flame Arrest

Rupture Discs, Tank Conservation Vents, Explosion Venting, Tank Blanketing, Flame Arrestors

Gas Detection

Personal Gas Detection - Portables and Drager Tubes, Hazardous Gas Area Monitor, Respiratory Protection

Control Valves, On-Off Valves and Regulators

Gas, Steam & Liquid Control Valves, Pressure Reducing & Back Pressure Regulators, Sanitary Regulators and Control Valves, On-Off Valves

Explosion Protection Testing, Isolation Valves, Vents and Systems

Active Explosion Suppression Systems, Explosion Isolation Valves, Explosion Venting, Explosion Testing Services

ABB Low & Medium Voltage VFD Drives

ABB General Purpose Drives, ABB Industrial AC Drives, ABB Industry Specific Drives

Environmental Instruments

Flow, Gas Detection, Analyzers, Pressure & Temperature Indicators and Transmitters, Indicators, Mosaic Displays and Annunciators, Paperless Recorders & Data Acquisition

Tuesday, April 17, 2018

Flow-Tech, Inc. Serving Maryland, Washington D.C. and Virginia

Flow-Tech is a manufacturer’s representative and stocking distributor of process instrumentation and calibration equipment in Maryland, D.C and Virginia specializing in the Industrial Process, Control, and Test / Measurement markets.

https://flowtechonline.com
410-666-3200 MD
804-752-3450 VA

Friday, March 30, 2018

Flow-Tech, Inc. - Process Instrumentation, Calibration, Safety, Measurement and Control

Flow-Tech is a manufacturer’s representative and stocking distributor of process instrumentation and calibration equipment in Maryland, D.C and Virginia specializing in the Industrial Process, Control, and Test / Measurement markets. Customers include: Power and Chemical plants, OEM’s, System Integrators, Municipalities, Engineering Firms, Universities, Medical Centers, and Research / Metrology Labs. Products and systems focus on the measurement and control of: flow, pressure, temperature, and level; as well as calibration equipment, analyzers, gas detection, annunciators, and data acquisition. Flow-Tech also provides field service, turn-key systems, equipment start-up, service contracts, and training.


Tuesday, March 27, 2018

Understanding Flow Sensing Technologies

When selecting a flow sensor, flow meter, or flow switch, one of the first considerations is always the process media: air, gas, steam or liquid. Some flow sensing technologies measure gas, some are better at liquids, some are best for a single media, such as steam, and others are good in multiple media. The industry’s major flow sensing technologies now available include:
Thermal
Thermal flow meters.
Depending on the process media and your application’s requirements, all of these technologies have their advantages/ disadvantages. By considering the process media to be measured, as well as your plant’s equipment and layout, environmental conditions, maintenance schedules, energy cost and ROI, you will be able to narrow the field to one or two best choices.

Coriolis
Coriolis
Coriolis (Mass): Coriolis flowmeters use the oscillating movement of two symmetric metal tubes that are made to vibrate from an internal driver coil.  When liquids or gases flow through the tubes, a phase shift occurs (like you see in the hose) and pickups measure the “twist” and then relate that value to the actual flow. In other words, the amount of twist is proportional to the mass flow rate of fluid passing through the tubes. The greater the twist, the larger the distance between, and the greater the flow.

Differential Pressure: The differential flow meter is the most common device for measuring fluid flow through pipes. Flow rates and pressure differential of fluids, such as gases vapors and liquids. The differential flow meter, whether Venturi tube, flow nozzle, or orifice plate style, is an in line instrument that is installed between two pipe flanges and measures the pressure drop across the flow restrictor and equates it to flow.

Magnetic
Magnetic
Electromagnetic: Magnetic flow meters, also called electromagnetic flow meters or "magmeters",operate on a very simple principal. An electrically conductive liquid moving through a magnetic field will generate a voltage that is related to the velocity of the liquid.

Positive Displacement: Provides a direct indication of actual volumetric flow rate. The fluid motion drives the mechanical assembly. As the fluid motion drives the positive displacement flowmeter assembly, its rotational, oscillating, or other regular movement is counted, often by electronic means using magnetic pickups on moving assembly. There are a number of different positive displacement flowmeter designs including oscillating piston, gear, nutating disk, rotary vane, and diaphragm.
Thermal
Thermal

Thermal (Mass): Measure flow by delivering heat into the flowing media and measuring the loss of heat between temperature measurement points. They are popular because they provide unrestricted flow, contain no moving parts, work well on large or small diameter pipes, provide accuracies over a wide range of flow rates, do not require temp/press compensation, and provide mass flow instead of volume.

Turbine
Turbine
Turbine: These types of flowmeters operate under the simple principle that the rotation of the turbine will be constant as the turbine is acted upon by a fluid passing through the flowmeter. The rotational velocity of the turbine is then interpreted as output, allowing for the operator to consistently monitor the flow rate of the process fluid. They are easy to maintain and reliable.
Ultrasonic
Ultrasonic

Ultrasonic: Measure, via sound waves, the velocity of liquid flowing through a pipe.  Doppler shift technology reflects ultrasonic beams off sonically reflective materials. The transit time method exploits the fact that the transmission speed of an ultrasonic signal depends on the flow velocity of the carrier medium. The use of ultrasonic flow technology is most used in the oil, nuclear, wastewater, pharmaceutical, food and beverage industries.
Variable Area
Variable Area

Variable Area: Measures flow rate by allowing the cross-sectional area the fluid travels through to vary, causing a measurable effect. Flow measurement is performed according to the float principle. Used to measure many different types of liquids and gases passing through closed piping.

Vortex Shedding
Vortex
Vortex Shedding: Refers to the phenomenon wherein flowing gas or liquid forms vortices around a solid obstruction placed in the flow path, which can be measured to calculate volumetric or mass flow. Measure the volumetric flow rate of steam, gas, and low viscosity liquids.

Contact Flow-Tech for any industrial or commercial flow application by calling 410-666-3200 in Maryland, or 804-752-3450 in Virginia. Visit https://flowtechonline.com.

Wednesday, March 21, 2018

Draeger Gas Detection Transmitter and Feature Selection Charts

Here are two charts to help you select Draeger Gas Detection Transmitters.

The diagram below provides a flow chart on how to properly select a Draeger transmitter.

Draeger Transmitter Selection Flow Chart
Draeger Transmitter Selection Flow Chart (click for larger view).

The table below provides a feature comparison table for most Draeger transmitters (it does not show the PointGard 2100, but the P8100 features are very similar, if not identical).

Draeger transmitter feature comparison table
Draeger transmitter feature comparison table
(click for larger view).

Sunday, February 25, 2018

Bently Nevada 3500 Series Machinery Monitoring System Datasheet

Bently Nevada 3500 Series Machinery Monitoring System
Machine condition monitoring combines hardware, software, and service and support – providing a broad, connected view of your operations. Together, they enable your plant to mitigate risk, boost safety, and reduce maintenance costs, while improving equipment reliability, uptime, and efficiency.

Hardware monitoring systems and sensors protect your equipment and collect rich condition monitoring and diagnostic data for analysis. Condition monitoring and diagnostics software connects real-time and historical data from production equipment to help you anticipate failure before it occurs. With scalable deployment and ongoing support service offerings, you can ensure that you’re maximizing the value of your condition monitoring program.

The Bently Nevada 3500 Monitoring System provides continuous, online monitoring suitable for machinery protection and asset condition monitoring applications. It represents our most capable and flexible system in a traditional rack-based design and offers numerous features and advantages not provided in other systems.

Download a PDF version of the Bently Nevada 3500 System datasheet here, or quickly review the embedded document below.

For more information, contact Flow-Tech in Maryland by calling 410-666-3200, in Virginia by calling 804-752-3450, or by visiting https://flowtechonline.com.


Wednesday, December 13, 2017

Draeger Tubes & Chip Measurement System Handbook

Draeger is the leader in industrial gas and vapor analysis and have developed more detection devices and tubes for more applications than any other gas detection company.

Draeger sampling tubes allow identification and measurement of different substances even under difficult conditions.

Draeger Chip Measurement System (CMS) combines Chips for measure specific substances with an electronic analyzer for easy-to-use spot-measurement. The analyzer combines an optical system for analyzing the color reaction with a mass flow controller and pump system.

Download the Draeger -Tubes & Chip Measurement System Handbook here.

Tuesday, July 25, 2017

Fieldbus Equipped Instrumentation - Part Two

Since automatic control decisions in FOUNDATION fieldbus are implemented and executed at the field instrument level, the reliance on digital signals (as opposed to analog) allows for a streamlined configuration of direct control system ports. If the central control device were to become overloaded for any reason, tasks related to control decisions could still be implemented by operators in the field. This decentralization of the system places less burden and emphasis on the overall central control unit, to the point where, theoretically, the central control unit could stop functioning and the instrumentation would continue performing process tasks thanks to the increased autonomy. Allowing for the instrumentation to function at such an increased level of operation provides a proverbial safety net for any system related issues, with the capacity for independent functionality serving as both a precaution and an example for how process technology continues to evolve from analog solutions to fully end to end digital instrumentation.

Even in terms of the FOUNDATION instrumentation itself, there were two levels of networks being developed at this increased level of operation, initially: the first, H1, was considered low speed, while H2 was considered high speed. As the design process unfolded, existing Ethernet technology was discovered to fulfill the needs of the high speed framework, meaning the H2 development was stopped since the existing technology would allow for the H1 network to perform to the desired standards. The physical layer of the H1 constitutes, typically, a two-wire twisted pair ungrounded network cable, a 100 ohm (typical) characteristic impedance, DC power being conveyed over the same two wires as digital data, at least a 31.25 kbps data rate, differential voltage signaling with a defined threshold for both maximum and minimum peak receive rates, and Manchester encoding. Optical fiber can be used on some installations in lieu of the twisted pair cable.

Most of these specifications were exactly designed to withstand extremely challenging process control environments while still not abandoning the philosophy of being easy to build and implement, especially in terms of new system establishment. The most crucial aspects of many process control systems are streamlined together, allowing for consistent communication and synchronization. All aspects are viewable from both the legacy central controller and also via each individual device. Despite the data rate of 31.25 kbps being relatively slow, what is sacrificed in terms of speed is more than made up for in terms of the system being compatible with imperfect cables and other hiccups which may destabilize a network with faster speeds. The evolved technology, ease of installation, and durability have made the H1 network a widely used implementation of the FOUNDATION fieldbus technology. Fieldbus is currently considered one of a few widely adopted industrial process control communications protocols.

For more information contact Flow-Tech in Maryland at 410-666-3200; in Virginia at 804-752-3450, or visit http://www.flowtechonline.com.

Saturday, July 22, 2017

Fieldbus Equipped Instrumentation - Part One

Autonomous control and digital instrumentation are two capabilities enabling highly precise or complex execution of process control functions. FOUNDATION fieldbus instrumentation elevates the level of control afforded to digital field instrumentation where, instead of only communicating with each other, instruments involved in particular process control systems can independently facilitate algorithms typically reserved for instruments solely dedicated to controlling other instruments. Fieldbus capable instrumentation has become the standard instrumentation for many process industry installations due to the fact the FOUNDATION design principle streamlines process systems. A large contributor to FOUNDATION's success has been faster installation as opposed to operational controllers which do not feature the fieldbus configuration. Newer process companies, or process control professionals seeking to establish a new system, have gravitated towards fieldbus due to the combined advantages of system conciseness and ease of implementation.

In a typical digital control system, dedicated controllers communicate with field instrumentation (the HART protocol is a prime example of digital communication at work in the industry). The host system controls configuration of instruments and serves as a central hub where all relevant control decisions are made from a single dedicated controller. Typically, these networks connect controllers and field devices through coupling devices and other buses which streamline many different instruments into a complete system.

FOUNDATION fieldbus approaches the same network scheme with an important difference. Whereas in a legacy or more conventional system, either algorithmic or manual decisions would need to be implemented via the dedicated system level controllers, instruments utilizing FOUNDATION fieldbus architecture can execute control algorithms at the local device level. The dedicated controller hub is still present, so that operators can view and monitor the entire network concurrently and make status changes. Algorithmic execution of control functions becomes entirely device reliant thanks to the FOUNDATION protocol. Additionally, even though FOUNDATION implements an advanced configuration, some operators use the capabilities introduced in the fieldbus upgrade to implement specific algorithms via each device while concurrently maintaining algorithms in the central controller. This dual algorithmic configuration allows for several advantages, including the ability for increased system precision.

Since individual devices in the control process are calibrated and able to execute their own control functions, issues in the process with particular devices can be isolated and dealt with in a more specified manner by technicians using the instruments in the field. The central operator retains the capacity to use the control hub to alter and direct the control system.

For more information contact Flow-Tech in Maryland at 410-666-3200; in Virginia at 804-752-3450, or visit http://www.flowtechonline.com.

Watch for Part Two of this series to be posted soon.

Wednesday, May 24, 2017

Drager X-Zone 5500 Hazardous Gas Area Monitoring

Drager X-zone 5500
Drager X-zone 5500
The Dräger X-zone 5500 transforms the Dräger X-am 5000/5100/5600 personal gas detection instruments into innovative area gas monitoring devices for a wide range of applications. In addition to personal air monitors carried on the body, these area gas monitors are positioned where gas hazards are expected to increase the level of safety.

Wireless fenceline

Up to 25 Dräger X-Zone 5500 can be automatically interconnected to form a wireless fenceline. The interconnection of the area monitoring devices allows for rapid establishment of safety networks for larger areas. A Dräger X-zone 5500 detecting a gas alarm transmits the alarm signal to all interconnected units. A red flashing master alarm in the mother unit detecting gas contrasts with red/green flashing alarms of the connected daughter units providing simple recognition of alarm status and the actual location of the hazard.

With the corresponding configuration, the maximum gas concentration in the monitored area is shown on the display. Combined with the display of the X-zone ID a clear containment of the hazard area is possible.

Clear warning

The illuminated green LED ring indicates that the air is free of toxic and combustible gases. Upon detection of gas hazards, the LED color changes from green to red, thus providing a clear visual warning that gas is present. Additionally, a loud and highly audible evacuation alarm is emitted. The Dräger X-zone 5500 gas entry is arranged that the gas can diffuse into Dräger X-am gas monitors from all sides.

Perfect for confined spaces

An integrated pump version allows for continuous monitoring of confined spaces and locations which are difficult to access, even from a distance of up to 150 ft.

Other benefits
  • Visual 360° LED (illuminated ring) 
  • Audible 360°; > 108 dB in a distance of 1 m (30 ft.), 120 dB in a distance of 30 cm (1 ft.) 
  • Approval for Ex-Zone 0 
  • Daily function test and calibration not required after single on-site testing 
  • Individually configurable with the Dräger CC-Vision PC software (eg. alarm frequency) 
  • Inductive charging station: easy and convenient non-contact charging 
  • Continuous operation for up to 120 hours: The 24 Ah battery of the Dräger X-zone 5500 provides up to 120 hours of continuous operation – a complete working week.

Monday, April 17, 2017

The Meriam MFC5150x Intrinsically Safe HART® Communicator

MFC5150
Meriam MFC5150
Available in ATEX (intrinsically safe) and Non-ATEX models, the Meriam MFC5150 directly reads Device Descriptions without any translations or subscriptions, enabling communication to take place with any registered or unregistered HART® device. This ensures your HART® transmitter will connect, regardless of brand or model.

The MFC5150 is built on the SDC-625 infrastructure and runs Windows CE. With a 1GHz processor and an 4GBMicro SD card, this HART® communicator is ideal for all of your data storage needs.

The 4.3 inch touchscreen provides excellent anti-glare viewing, allowing for comfortable mobile use in darkness or in bright sunlight. All functions are easily navigated via the full QWERTY keyboard and intuitive icons similar to that of a smart phone.

The handheld HART device also features hyperlink menu paths, teachable device specific shortcuts, instant on, multiple languages, help context, video’s and TAB access to panes just like on a computer.



For more information visit Flow-Tech here, or call 410-666-3200 in Maryland or 804-752-3450 in Virginia.

Tuesday, March 28, 2017

Thursday, December 1, 2016

Toxic Gas and Vapor Detectors - What Can Be Measured

hazardous toxic gas detector explosion proof
Explosion Proof Toxic Gas Detector
Courtesy Dräger
Industrial sites that employ or produce hazardous or toxic gases have a high level of responsibility for protecting workers and the environment from exposure or harm. A significant component of efforts to mitigate the risk posed by toxic gas or vapor is to install instruments capable of detecting the target gases at levels sufficient to provide an alert before, or when, levels reach unacceptable concentrations.

Dräger manufactures gas detectors utilizing electrochemical sensing technology, providing continuous detection of target gases and vapors under a wide range of environmental conditions. The sensors are factory calibrated and ready to use when shipped. The sensor connection is intrinsically safe, so a flame arrestor is not needed. Intelligent self-testing provides predictive maintenance assistance.

There is more to learn about the toxic gas and oxygen sensors from Dräger. The document included below provides a guide to the over 100 toxic gases and vapors detectable by the unit. Share your toxic gas, vapor, and oxygen detection challenges with a product application specialist. The combination of your process knowledge with their product application expertise will produce effective solutions.


Thursday, June 30, 2016

New Flow-Tech Intro Video

We have a new introductory video for Flow-Tech's YouTube Channel. Thanks for watching.