Gas Flow
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Product
Gas Flow Meters & Controllers
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Accurate Mass Flow Measurement Sierra designs and manufactures a wide range of today's most advanced analog and digital gas flow meters, mass flow meters, controllers and switches across three core technologies: Capillary Thermal, Immersible Thermal, and Mass Vortex. Each gas flowmeter or controller meets exacting standards, and we can also customize your flow rate sensor to meet application requirements (often free of charge).
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Gas Flow Sensors
ESRF-HF Transmitter
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The ESRF-HF is a family of mass flow transmitters which enable fast and accurate measurements of gas flow over a wide dynamic range. Each transmitter integrates a MEMS flow sensor and readout electronics inside a housing with very small form factor made from stainless steel. The duty pressure of the flow transmitter is 11bar. All measurement data are fully calibrated, and temperature compensated on board, leading to a reduced temperature coefficient and high measurement accuracy.
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Air Quality / Gas / Flow Sensors
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Panasonic Industrial Devices Sales Company of America
Panasonic offers compact, high sensitivity Air Quality, Gas and Flow Sensors for use in equipment or automation processes. Designed for air quality / IAQ monitors and home appliances, the Laser Type PM (Particulate Matter) Sensor can detect dust particles down to the 0.3 m size.
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Gas Flow Analyzers
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Test gas flow and respiratory medical equipment accurately, including ventilators, flow meters, endoscopic insufflators, suction devices, pressure gauges and anesthesia machines, especially when accuracy of low volume and pressure is crucial.
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Gas Flow Controller
GFC Series
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The GFC series enables quick interchange with standard MFCs: same mechanical outline, 4-VCR connectors on standard model, and 15-pin analog connector.
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Gas Flow Meters
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There are innumerable circumstances where gas flow rates need to be quickly and precisely measured. You’ll always be prepared with Netech’s versatile range of gas flow meters, which are designed to measure several types of gases including air, N2, O2, CO2, and He.
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On-board Emissions Measurement System
OBS-ONE PM unit
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OBS-ONE PM unit is the industry-leading on-board Particulate Matter (PM) measurement system. It collects PM on a filter paper, using a partial flow gravimetric sampling method, while simultaneously measuring real-time PM. A key feature of this design is the use of a venturi flow meter which enables reliable proportional sampling and accurate exhaust gas flow measurement under transient flow conditions. Combine the GAS unit and PM unit to perform certification tests on heavy duty and non-road vehicles.
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Vapor Source Mass Flow Controller With Viscous Choked Flow
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The 1150C Vapor Source Mass Flow Controllers are pressure based measurement and control systems designed to meter and control vapor from low vapor pressure liquid and solid sources directly, without the need of a carrier gas using viscous flow through a choked orifice.
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Mass Flow Meters for Gases
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With our long history of designing mass flow solutions for medical and industrial automation, Sensirion is your ideal partner to support you in the development of new products. Our mass flow meters ensure fast, accurate and economical measurements of gas flow over a wide dynamic range. They are extremly reliable and long-term stable and are free from zero-point drift.
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4 Point Probe Sheet Resistance/Resistivity Measurement with Temperature Controled System
TCR-600
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*Controlled Thermo-chuck (room temperature~600℃/less than 20 minutes)*600C compatible probe head with 1mm linear*Controlled with vacuum sensor, digital thermo-meter, vacuum gauge and gas flow meter*Temperature measuring accuracy:±(0.5% + 1℃)
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Dual Vapor Gravimetric Sorption Analyzer
DVS Resolution
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DVS Resolution’s key feature is the combined ability to precisely control and measure temperature and relative humidity while recording the highest resolution changes in mass. DVS Resolution uses a dry carrier gas typically nitrogen or compressed air for its operation. Digital mass flow controllers regulate flows of dry and saturated gases. Relative humidity is generated by precisely mixing dry and saturated gas flows in desired flow ratios which produce expected relative humidity. In a typical experiment a known concentration of water vapor is delivered over a sample placed inside the sample pan connected to the Surface Measurement Systems Ultrabalance™ measuring realtime mass changes caused by sorption or desorption of water molecules. Prior to sorption measurements, the sample can be in-situ preheated/dried at temperatures of up to 300oC.
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Flow Measurement
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HighReach Measuring & Controlling System Co.,Ltd
Involves using flow meters that measure the flow rate of steam, liquid, or gas flowing through a pipe.
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Low Pressure Drop Thermal Mass Flow Meter
HFM-200 LFE
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The HFM-200 LFE Series by Teledyne Hastings can be configured and accurately measure gas flow in a broad array of applications. Featuring reliability and stability, the 200 Series is chosen by users for its very stable performance with varying ambient conditions. A wide choice of elastomer seals make this flow meter compatible with most gases.The HFM-200 LFE meter has flow ranges from 0-10 sccm to flows of 0-15,000 slm; provides analog outputs, and is constructed of stainless steel. The full scale range is specified by the end user. A NIST traceable calibration certificate is standard. Cleaning for oxygen service is available. Our laminar flow elements (smooth, threaded or flanged) are available in various sizes from 3/8" up to 8". Low pressure drops at full scale flow.
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Mass Flow Meters
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Alicat Scientific, Incorporated
Use mass flow meters to measure gas flow from 0.5 SCCM to 10,000 SLPM, with accuracies as good as ±0.5% of reading or ±0.05% of full scale and a measurement range of 0.01-100% (10,000:1 turndown).
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High Speed & Precision Pressure Insensitive Mass Flow Module
D700MG
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Critical semiconductor manufacturing processes continuously desire precision gas flow control devices that enable both future innovation, and lab to fab transition of leading edge memory and logic device. HORIBA's propose the new pressure based MFC D700MG, the upper compatible model of the D500MG to support customer’s challenges.
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Long Term Test Kit
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When long term electro-chemical tests (>1000 hours) are run to monitor the cell degradation at the cathode for example, it is important to avoid any contaminant in the gas flow rate.Inconel 601 flange equipped with alumina housing and alumina tube to feed the gas to the electrode during long term test (>1000 h)Typical poisoning is coming from the chromium contained in the steel tubing. The volatile chromium species (Cr6+) will flow into the cathode (with the air) and thanks to the intake of electrons at the electrode, the chromium ion will transform to chromium oxide and be deposited at the cathode triple point. In such a case, the long term test kit is used. The Inconel 601 flange is equipped with an alumina housing (>96 % Al2O3) and the air (or other gas) is led through an alumina tube. The long term test kit is fully compatible with other functionalities proposed with the Open Flanges™ test Set-Up as the integrated steamer or the small pellet test kit. The long term test kit can be implemented on the fuel, on the air or on both sides.
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Process Particle Size Analyzers
Parsum Range
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Parsum Probes use Spatial Filter Velocimetry to deliver in situ, real-time size and velocity measurements for solid particles suspended in a pneumatic or gravity flow gas stream. Robust, dustproof and waterproof they measure particles in the size range 50-6000 µm with velocities from 0.01-50 m/s and are suitable for any industrial environment.
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Variable Constant Differential Flow Controller
VCD 1000
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The Porter Model VCD 1000 flow controller is precision-engineered to control low gas flows at constant mass flow rates regardless of changes in downstream pressure.
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Gas Mixers / Gas Blenders
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WITT offers high-quality gas mixers and gas dosing systems for two or more gases, especially for high and strongly fluctuating gas mixture flow rates.
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Ultrasonic Gas Flow Sensor
GB Series
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Panasonic Industrial Devices Sales Company of America
A compact, dual-function Ultrasonic Gas Flow Sensor that measures gas flow and gas concentration for flow rates from 1 to 25 Liters per minute. This Ultrasonic Gas Flow Sensor uses a unique time-of-flight design with an onboard processor to make highly accurate measurements of both gas flow and concentration. Suitable for use with many gases in an easy to implement format.
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Digital "A" Flow Controller for High Flow
HFM-D-306A / HFC-D-308A
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Mass flow techniques provide reliable, repeatable and accurate gas flow rate measurements.HFM-D-306A/HFC-D-308A mass flow instruments have flow ranges from 0-2500 slm to 0-10000 slm; provide analog and digital outputs, and are constructed of stainless steel. Easy, user friendly digital communications with windows based software interface available. Available with a variety of elastomer seals for maximum flexibility.Self diagnostics of the sensor, valve and overflow are included in the digital features. Also of interest is the auto zero feature which detects when the valve is closed and automatically resets the zero. These mass flow meters and controllers can store up to 10 calibrations of different ranges and gases. Another feature is the built in totalizer for monitoring gas usage under user set conditions.
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On-board Emissions Measurement System for NH3/N2O
OBS-ONE IRLAM Unit
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The OBS-ONE IRLAM unit is an on-board emissions measurement system for analyzing the NH3/N2O under real-world driving conditions and supports our customer’s future regulatory development.The IRLAM unit combines with the GAS unit and the PN unit to measure the specified exhaust gas components, along with the exhaust gas flow rate, the GPS position, and the atmospheric conditions (temperature, humidity, pressure).
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Constant Temperature Anemometry (CTA) - Hot-Wire Anemometry - Thermal Anemometry
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Constant Temperature Anemometry (CTA), also known as Thermal Anemometry, is a technique for the measurement of turbulence in 1, 2 or 3-dimensional gas and liquid flows, using hot-wire or hot-film probes inserted in the flow. CTA is particularly suitable for the measurement of flows with very fast fluctuations at a point (high turbulence) and the study of flow micro structures, where there is a need to resolve small flow eddies down to the order of tenths of a mm.
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DELTA™ II 2-zone Flow Ratio Controller
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The DELTA™ II Flow Ratio Controller divides and controls mixed process gas flows to either multiple chambers or zones within a process chamber at ratios specified by the user maximizing process uniformity and repeatability. It is available with EtherCAT® or DeviceNet™ communications.
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3CH Gas Mixer
G-MIX 3CH
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G-MIX is a versatile integrated system that can be easily used to create innumerable gas mixtures, the gas flows are accurately controlled by three MFCs (Mass Flow Controllers), each MFC has stored within its memory the calibrate tables for 10 gases different.
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DELTA™ IV 4-zone Flow Ratio Controller
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DELTA™ IV 4-zone Flow Ratio Controller is a digital controlled, browser-enabled, process control instrument providing the latest gas flow ratio measurement and control technology to meet the demands of multi-channel flow distribution for semiconductor, flat panel, and solar panel process uniformity and control. It is available in EtherCAT® or DeviceNet™ providing the latest gas flow ratio measurement and control technology to meet the demands of multi-channel flow distribution.
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CEMS
FMD 02
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IMR Environmental Equipment, Inc.
The continuous measurement of velocity and temperature of gas flows is much important at operation of a system with flowing gases (e.g. hall outlet air, exhaust etc.).
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Dual Pitot Tube Flow Meter
PTFM-ONE-DT
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The Dual Pitot Tube Flow Meter, PTFM-ONE DT is a standalone interface for measuring exhaust gas flow rate of combustion engines. The system uses the tried-and-tested pitot tube principle with high-frequency transducers, with a sampling rate of 1kHz to accurately measure highly pulsating exhaust flows. This rapid capture rate ensures that any pulsations or exotic behaviour caused by the engine is measured, and the unique design of the PTFM-ONE DT means reverse flows can be calculated, with the same guarantee of sensitivity.
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DELTA™ III 3-zone Flow Ratio Controller
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The DELTA™ III Flow Ratio Controller divides and controls mixed process gas flows to three chambers or zones within a process chamber at proportions specified by the user to optimize process uniformity and repeatability. Available with EtherCAT® or DeviceNet™ communications, this device provides the latest in gas flow ratio measurement and control technology.
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Pressure Controllers for Flowing Processes
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Alicat Scientific, Incorporated
Use pressure controllers when gas is flowing through a process. They control absolute, gauge, or differential pressures, and can measure in-line pressures or be plumbed to measure process pressures at any point.





























