With new digital architecture and improved automation, the G8 improves on the very stable and easy to use G4 platform and user interface.

Warning and alarm messages are sent to your phone via G8 app, so you have total control any time, anywhere!

New internal components provide significant weight and footprint reductions for better handling/transportability which improves user productivity in sampling platforms with limited space.

Features

• Connection with online analyzer to acquire CO2 and O2 data for an accurate and real time gas density calculation (optional). Also other pollutants can be archived in a dedicated report
• Advanced digital high resolution differential pressure sensors with near zero drift. High temperature stability over the sampling period
• Fixed point stack gas speed measure as required from ISO16911-1
• Automatic unattended sensor verification
• Wide resistive touch screen. any type of touching material can manage it (gloves, pen, etc). All the informations are available in a clear high res view
• Connection with swirl angle meter to verify the flow as required from ISO16911-1 (optional)
• Background diagnostic test procedure to ensure total efficiency during sampling
• USB interface to download data
• Total isokinetic control within the standard limits with very fast response and high flow stability even in the most unstable stack gas speed conditions
• Volume measurement with dry gas meter
• Sampling flow measurement with venturi flow meter
• In-stack temperature and velocity measurement
• Wide duct library to archive all site data
• Data logger function with saving data on internal memory or external USB key (supplied with the instrument)
• Very high MTBF which results in low maintenance and low spares cost
• All sensors can be calibrated as required from ISO17025
• Auto check at starting
• Leak test in line during sampling using an O2 sensor
• Log measurements and alarms
• Automatic re-start in case of flue gas velocity alarm.

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The optical technology of the LOA has multiple advantages:

• Complete Path-Averaged Measurement – The LOA takes the average velocity rate over the entire optical path. This results in a more representative measurement of the flow – much better than point- source sensors.
• Predictable Performance Designed for long-term use in a pot room, all critical components of the LOA are enclosed in air-purged housings and HF resistant windows are used to transmit the IR light into the pot room environment.
• Low Maintenance As simple as periodic cleaning and checking alignment.

The LOA-105 has received the seal of approval from the US government with EPA Method 14 Equivalency Approval (the rule for measuring airflow velocity in aluminum roof vents. LOA-105 has captured nearly 70% of the US market. Major players in the industry such as ALCOA, Reynolds and Kaiser use LOA as well as ALCAN in Canada, Comalco in Australia, and ALCOA Europe.

LOA design, based on decades of experience in harsh environments, results in a rugged, extremely reliable sensor, immune from typical error modes. LOA uses AGC circuitry to eliminate the effects of output power drop, contaminated optics, or dusty air. Internal diagnostics alert the user if signal strength gets too low for normal operation. Preventative maintenance, suggested every 6 months, is as simple as cleaning the windows and verifying optical aim. With DSP based design, no field calibration is ever needed.

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Ultraflow 150 Flow Monitor Brochure

The system accurately measures the time required for the tone bursts to traverse the gas stream in each direction. The flow velocity is directly related to the difference in propagation time, t1 and t2 of the tone bursts with and against the gas flow. Based on the cross-sectional area of the stack or duct, the flow velocity is converted to volumetric flow. This flow measurement is independent of the temperature, density, viscosity and particulate or condensate concentration.

Innovative, non-contacting tech­nique greatly reduces maintenance

The Ultraflow 150 represents an advance in continuous flow measurement systems for small and large stacks and ducts. Transducers are non-intrusively mounted in Teflon housing and are protected from flue gas and particulate with continuous purge air. This non-contacting method mitigates maintenance and ensures long term operation unlike intrusive pitot, thermal systems, optical scintillation and reflective ultrasonic technology.

Velocity measurement independent of temperature, pressure and density of flue gas

The system measures the transit times, t1 and t2, of the tone bursts between the pair of transducers with a 50 nanosecond transit time resolution. The equation for determining velocity is:

Fv = [L/(2cosØ)][(t2-t1)/t2t1]

Where L is the pathlength and Ø is the angle between the line-of-sight of the transducers and the nominal flow direction. The flue gas composition has no influence on the calculation of velocity and therefore knowing only the geometry and transit times are sufficient to calculate the velocity.

Line average response is exceptionally accurate…long term drift ±1%

The Ultraflow 150 integrates the infinitesimal velocity vectors along the transducer path to calculate velocity as well as temperature. A normal sampling cycle consists of many measurements in each direction over a time period that can be as short as 5 seconds. Resolution is better than ±0.3ft/sec. Long term drift is ±1% over the life of the instrument. A barometric pressure transducer option is available to correct back to SCFM.

Temperature Measurements

The equations for determining temperature are:

Cs = (L/2)[(t2+t1)/t2t1]

T = r Cs2

Where Cs is the speed of sound and “r” is a correction factor that relates the speed of sound to a specific gas composition.

Dynamic calibration checks verify all system components

Ultraflow 150 meets all 40CFR75 requirements, NOX ozone season rules and new RATA standards. Calibration checks are conducted once per day or on command to fully test the signal transmission, reception, processing display and output; i.e., a full system integrity test not available via competing technologies. The flow characterization curve is also tested under this protocol. No adjustments are ever made to the zero and span since the monitor is drift free. Calibrations can be initiated manually, automatically, by a digital input or via the front panel command.

Digital signal processing provides greater accuracy, quicker response time and excellent resolution

Ultraflow 150 utilizes a Field Programmable Gate Array (FPGA) to determine the time of flight based on a proprietary peak finding algorithm. Our peak finding algorithm enables response times of down to 5 seconds; making the 150 ideal for hazardous waste combustors and process applications.

Easy to use Enhanced Remote Panel

The remote display features easy-to-use menu structures that make configuration of the flow monitor simple and easy without the need of a laptop. I/O includes four analog outputs, eight digital inputs, eight contact outputs, RS232, 422, 485, and LONWORKS® network communication. A large LCD display makes viewing easy throughout a control room.

Heavy duty components are easy to install

The Ultraflow 150 has simplified placement requirements, using customer-installed, 3½” I.D., schedule 40 pipe as mounting ports. (For other pipe sizes, consult factory). Teledyne Monitor Labs provides all system components. Materials of construction for the Transducer Interface Enclosure and j-boxes are stainless steel. Transducer assemblies are aluminum protected by acid resistant epoxy paint.

“X” Pattern configuration eliminates a second platform

In many cases, due to the 150’s improved resolution, low angles of installation (typ. 5ft. vertical offsets from a single platform) are possible. In some demanding applications, an “X”- pattern may be required.

The Ultraflow 150 has the capability of measuring flow through either a single or dual set of transducers. A dual set of transducers is typically referred to as an “X” Pattern. An “X” Pattern eliminates any adverse effects due to applications that exhibit a pitch flow; enables nearly 100% availability and may institute redundancy.

Transducer Interface Enclosure (TIE)

Electrical signals corresponding to acoustic transmit and receive signals are conveyed via cables between the transducers and the TIE. The TIE houses preamp /driver boards that amplify receive signals and transmit pulses. A signal processing board containing an FPGA controls timing, data collection, filtering, boxcar integration and other functions. A microprocessor board evaluates the box car data and determines time of flight, flow velocity, volume, speed of sound, temperature and signal to noise ratio. All these data values may be viewed via the Enhanced Remote Panel or the optional Local User Interface (LUI).

Purge Air System

The transducer assemblies are normally kept dry and clean by purge air. Depending on the application, the optimal installation may consist of dual blowers (a separate purge blower for each side of the stack), a single blower configuration with flow splitter to reliably send equal amounts of purge air to each side of the stack, or no blowers at all where a reliable negative-draft process is present. A no blower system has an in-line filter to clean up the ambient air. When blowers are used, the normal purge system consists of blowers, hoses, air filters, mounting plates and a protective weather cover. Teledyne Monitor Labs Engineering will recommend the optimum configuration for each application.

Transducer Assemblies

Each of the two transducers alternately acts as transmitter and receiver. The purge nozzles are constructed of acid-resistant Teflon with stainless steel or Hastelloy hardware for easy cleaning and a long service life. Each transducer assembly is made of lightweight aluminum stock and can be easily extracted from its mounting port by disengaging four draw latches.

Enhanced Remote Panel

Uses a large, back-lit, LCD graphics display with English-language menu-driven screens, providing ready access to all information needed for full use of the system. In addition, the user can graph up to the most recent 100 values of a selected parameter, such as:

• Volumetric Flow and Temperature
• Calibration Values

The keypad, a rugged 20-button ensemble inlaid under a tough, hard coated, scratch and chemical-resistant coating, can be used to:

• Display Volumetric Flow, Velocity and Temperature
• Identify the Cause of Alarm or Malfunction
• Configure the Analog Outputs
• Edit Parameters such as Path Length
• Set Alarm Values for High or Low Volumetric Flow or Temperature and Out of Cal measurements
• View Signal-to-Noise Diagnostics
• Load Linearization Curves for Correlation to EPA Method 2
• View Flow Data Pre and Post Linearization

Standard with the Enhanced Remote Panel is a security keylock for protection of important calibration parameters. System elements communicate over a single twisted pair using LONWORKS® network communication protocol. Bright LED indicator lights are used to indicate faults and alarms. The four optically-isolated analog outputs, normally packaged within the Enhanced Remote Panel, can also be offered in a separate housing for convenient installation.

Ethernet Interface

The Ultraflow 150 Enhanced Remote Panel now features a 10/100 BaseT Ethernet interface as standard equipment. This capability provides a multilevel password protected user interface to TCP/IP networks such as LAN’s or the Internet. Client side user interface access is via standard web browsers. Simultaneous Modbus TCP access to instrument parameters and emission data is also supported.

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Two identical sensors alternately transmit and receive ultrasonic pulses. The system evaluates the transition times dependent on direction and calculates flow speed.

Key Benefits

• Extremely low maintenance
• Reliable measurement across the tunnel profile
• Stand-alone system, no control unit required
• Simple configuration
• Corrosion resistant against aggressive tunnel atmosphere
• Withstands lavation process in tunnels
• Sensors can be replaced quickly, no tools, no re-alignment required
• Signal transmission
  – per 4-20mA analog signal and 2 relays
  – per RS 485 bus via MODBUS RTU protocol
• Minimal spare requirements.

Applications

Slow measurement:

• Road tunnels
• Railway tunnels

 Signals for ventilation control system

• Monitors air flow speed
• Enables control of flow speed in case of fire

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The post Durag D-FL 220T ultrasonic flow velocity monitor for tunnels appeared first on Thomson Environmental Systems.

Applications

• Continuous emission monitoring in humid and aggressive gases
• Continuous emission measurement in small to very large duct diameters
• Volume flow measurement for process control and process optimisation

Features

• Continuous measurement of velocity and volume flow
• Contactless measurement 
• Corrosion-resistant ultrasonic transducers
• Measurement over the entire duct diameter
• Automatic check functions

Key benefits

• Certified for official emission monitoring
• Precise measurement of gas velocity and volume flow
• Suitable for measurement in humid and aggressive gases
• Long life time and high availability even under extreme plant conditions
• Low maintenance.

Industry Applications

• Plants requiring official approval acc. to IED 2010/75/EU
• Plants requiring compliance to 40 CFR 60 US EPA PS6
• Emission trading of green house gases GHG acc. to 2003/87/EG / MRR
• Power industry
• Biomass incineration
• Waste incineration
• Cement industry
• Crematories
• Process monitoring.

Certifications

CE, QAL1 (DIN EN 14181 / DIN EN ISO 14956 / DIN EN 15267-3), MCERTS, EAC

Download Specifications

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The instrument is housed in a compact and lightweight case; easy to set up and operate. It measures the gas velocity and temperature through a Pitot tube and a thermocouple.
It provides instantaneous calculation of the fluid-dynamic parameters displaying specified parameters on a wide alphanumeric display.
An easy to use auto-guided program is provided for the following measurements:

• Continuous measurement
• Flow rate measurement
• Isokinetic sampling
• Constant flow sampling.

The measuring probe sits in temperature and corrosion proof AISI 316 stainless steel.
It incorporates an “S” type Pitot tube and a thermocouple, that are protected and kept together by a graduated tube of 700 or 1300 mm standard useful length.

Features

• Sampling point determination in duct
• Stack condition and normalized flow rate measuring in duct
• Memorises gas velocity and temperature average values for successive printing, and data transferring to PC with presetting average intervals
• Isokinetic condition calculation with continuous visualization of the sampling flow rate
• Nozzle diameter determination to fit with the characteristics of the duct and the sampling unit
• Memorises all the measured flow rates and/or of the isokinetic samplings, based even on a complex sampling point
• Calculation of the theoretical air volume of an isokinetic sampling to compare it with the measured air volume, and so to evaluate the isokinetic condition during the sampling
• RS 232 interface for memorized data transferring to a printer or a PC that gives a report of each samplings. Hundreds of sampled data can be logged with guarantee of no data lost, even in case of total battery exhaustion
• Power supply by rechargeable NiCd batteries and/or by 220V or external batteries for long period monitoring.

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• It allows Calibration traceability of each sensor and measured parameter.
• Isostack G4 stores each calibration performed by the user and the manufacturer.
• The report is downloadable via USB.
• Calibration curve on 5 points for each sensor and acquired width.
• Correction curve on 5 points programmable by customer for each sensor.
• Allows you to adjust deviations found during recalibration.
• Volume measurement redundancy via a mass and a volume meter
• Auto-calibration function allows you to verify the calibration of flow and volume measurement elements and eventually to adjust them to an external reference.
• High-precision pressure sensor with thermal drift compensation.
• Thermocouple calibration curve following ITS 90 standard.

Features

• In accordance with UNI EN13284-1, EN 10169 and USEPA M5, M17
• Fast isokinetic control at any stack condition
• In-stack temperature and velocity measurement
• USB interface to download data<
• Wide Graphic Display
• High precision pressure calibrator, with thermal drift compensation device
• Wide library with specifications of the most common ducts
• Data logger function with saving data on USB key (supplied with the instrument)
• Reduced maintenance
• Available with ISO 17025 accredited laboratory certificate

Parameters saved on Isostack G4 Reports:

• Instrument’s serial number
• Sampling date/hour
• Duct’s temperature
• Duct’s absolute pressure
• Flue gas velocity
• Duct’s flow
• Duct’s parameter
• Sampling duration
• Atmospheric pressure
• Sampling line pressure
• Sampled volume
• Nozzle’s flowrate
• Sampler’s range
• Isokinetic deviation
• Heated box temperature
• Heated probe temperature
• Condensation bath temperature
• Condensation bath’s gas outlet temperature

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Gases analysed: O2, CO, CO2, , CH4, H2, NO, NO2, NOx, SO2, Dew Point, LEL Combustibles, NH3, Hydrocarbons, He, Temperature, Velocity, SF6, HCI, CI2, Multi-Gas Combinations

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Because these analyzers are intended for permanent exposure to the sample gas, they must be equipped with suitable sample conditioning components. This means that continuous analyzers are bigger than portable analyzers, and they are almost always permanently mounted to a wall or other vertical surface.

Gases analysed: O2, CO, CO2, , CH4, H2, NO, NO2, NOx, SO2, Dew Point, LEL Combustibles, NH3, Hydrocarbons, He, Temperature, Velocity, SF6, HCI, CI2, Multi-Gas Combinations

Applications;

• Flue Gas & Emissions Analyzers
• Landfill Gas Analyzers / Biogas Analyzers
• Power Generation and Hydrogen Purity
• Heat-Treating and Metal Finishing Analyzers
• Syngas Analyzer Models
• Process Gas Analysis
• Steel-Making Analyzers
• Other Energy Intensive and Remote Location Analyzers
• OTM – Optical Temperature Measurement
• OVM – Optical Velocity Measurement
• Ambient Air Analysis
• Portable Engine Exhaust Analyzers
• Controlled Atmosphere Analyzers
• Sample Conditioning Systems
• Special Applications and Analyzer Ideas
• Portable Gas Analyzers
• Continuous Gas Analyzers
• Hazardous Area Analyzers

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The small size of portable analyzers limits the available internal space for sample conditioning components. This means that they are not equipped to do long-term analysis of challenging sample gases. However, they are ideal for spot-check and tuning applications.

Gases analysed: O2, CO, CO2, , CH4, H2, NO, NO2, NOx, SO2, Dew Point, LEL Combustibles, NH3, Hydrocarbons, He, Temperature, Velocity, SF6, HCI, CI2, Multi-Gas Combinations

• Flue Gas & Emissions Analyzers
• Landfill Gas Analyzers / Biogas Analyzers
• Power Generation and Hydrogen Purity
• Heat-Treating and Metal Finishing Analyzers
• Syngas Analyzer Models
• Process Gas Analysis

Applications:

• Steel-Making Analyzers
• Other Energy Intensive and Remote Location Analyzers
• OTM – Optical Temperature Measurement
• OVM – Optical Velocity Measurement
• Ambient Air Analysis
• Portable Engine Exhaust Analyzers
• Controlled Atmosphere Analyzers
• Sample Conditioning Systems
• Special Applications and Analyzer Ideas
• Portable Gas Analyzers
• Continuous Gas Analyzers
• Hazardous Area Analyzers

Learn More

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