Category: Mass Flow

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Mass Flow

Mass flow meters measure the actual mass of the flow medium per unit of time. It is used in both gas and liquid measurements. This is the most accurate type of measurement when compared to an ultrasonic meter that measures volume.

Average Flow Thermal Mass Transmitter | FDM06-P
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Average Flow Thermal Mass Transmitter - Overview

This Thermal Mass Transmitter stabilises airflow direction and velocity distribution, leading to improved measurement accuracy and consistent sensor output. It uses a multi-point averaging Pitot tube, which samples airflow across multiple points in the duct to determine a representative average velocity. Suitable for Compressed Air System Management, Optimisation of Air Compressors & Pneumatic Equipment Efficiency, Air Dryer Flow Control, Process Gas Consumption Monitoring (N2, Ar, CO2, etc.), Pipeline Leak Detection & Alerts, HVAC Duct Monitoring, Smart Manufacturing Energy Management, Cleanroom Airflow Monitoring, Biotech & Pharmaceutical Gas Supply Stability Monitoring, Food Processing Gas Filling & Packaging Monitoring.

Average Flow Thermal Mass Transmitter - Features
- Sensor type: Hot-wire sensor
- High Sensitivity
- Low Pressure Loss
- Detects Minute Airflow Changes
- No Compensation Needed, Direct Flow Output
- Sizes 2″~12″, Easy Installation
- ±1.5% F.S. Accuracy, 16 bar Pressure Resistance
- Analogue, Relay, RS-485 Outputs
- Suitable for various types of gases (N2, Ar, CO2, etc.)
- Turndown ratio: 100: 1
- Output : 4 ... 20 mA / 0 ... 10 V / Relay / RS-485
- Accuracy : 0.5 ... 60 m/s：±(1.5% of mv + 0.8 m/s)
- IP rating: IP65
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Bi-directional Low Air Flow Thermal Mass Transmitter | FDM06-L
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Bi-directional Low Air Flow Thermal Mass Transmitter - Overview

This thermal mass flow transmitter is based on the hot-wire principle, featuring bi-directional measurement. It is ideal for duct applications requiring bi-directional airflow monitoring. This transmitter reacts instantly to flow direction changes. It eliminates the need for dual transmitters, saving space and simplifying reverse flow measurement without reinstallation. It has dual temperature sensors, ideal for laminar flow/overflow.

Bi-directional Low Air Flow Thermal Mass Transmitter - Features
- Bi-directional measurement
- High sensitivity for low airflow
- Dual temperature sensors,
- 2" LCD colour screen
- Easy settings via buttons
- Screen displays airflow and air velocity, integrated with UI settings
- Accuracy : ±1.0% pipeline withstands pressure of 16 bar
- Multiple Outputs: Analogue output / Relay / RS-485
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Thread Thermal Mass Flow Meter | RWMF Thread
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Thread Thermal Mass Flow Meter - Overview

The Thread Thermal Mass Flow Meter is popular in industrial applications due to its design. It features no moving parts, a nearly unobstructed straight-through flow path, requires no temperature or pressure corrections and retains accuracy over a wide range of flow rates. Straight pipe runs can be reduced by using dual-plate flow conditioning elements. Simple installation with minimal pipe intrusions. It is mainly used to measure dry gas, such as Air, Natural gas, LPG gas, Biogas, etc. Not suitable for Vapour, Humid gas and Ethyne.

Thread Thermal Mass Flow Meter - Features
- Wide range ratio 1000:1
- Large diameter, low flow rate
- Direct mass flow measurement without temperature & pressure compensation
- Sensitive low flow rate measurement
- Easy to install and use
- Suitable for single or mixed gas flow measurement
- Could measure gas with flow velocity from 100Nm/s to 0.1Nm/s, which can be used for gas leak detection
- The sensor has no moving parts or pressure-sensing parts
- Not affected by vibration on the measurement accuracy
- Good seismic performance and high measurement reliability
- No pressure loss or negligible pressure loss
- Supports multiple communication methods: RS485, MODBUS protocol, etc.
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Venturi Thermal Mass Flow Meter | FDM06-I
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Venturi Thermal Mass Flow Meter - Overview

This Thermal Mass Flow Meter features a Venturi structure, which guides airflow through a contraction-expansion zone to ensure steady and uniform flow across the sensing element. This flow conditioning structure helps to stabilise the airflow direction and velocity distribution, leading to improved measurement accuracy and consistent sensor output. Suitable for Compressed Air Systems, Pneumatic Systems, Dryers, Air Consumption Monitoring, and Pipeline Leak Monitoring.

Venturi Thermal Mass Flow Meter - Features
- Precise Measurement: unique Venturi tube structure
- 2″ LCD Screen: Easily configurable with buttons
- Shows instant and cumulative measurements
- Screen rotates 90 degrees for easy viewing
- Multiple Pipe Diameters Available : (DN15 / DN25 / DN40 / DN50 / DN80 / DN100)
- Accuracy: ±1.5% F.S., pipeline withstand pressure of 16 bar
- Multiple Outputs: Analogue output / Relay / RS-485
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Insertion Thermal Mass Flow Meter | QTMF
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Insertion Thermal Mass Flow Meter - Overview

This one-of-a-kind mass flow meter is popular in industrial applications. It can be used for low-flow measurement. It features no moving parts, a nearly unobstructed flow path, and retains accuracy over a wide range of flow rates. It requires no temperature or pressure corrections. Straight pipe runs can be reduced by using dual-plate flow conditioning elements. Installation is simple with minimal pipe intrusions. Easy to use. Suitable for all kinds of single or mixed gas flow measurement and gas leak detection. Sized from DN40~DN2000mm. It supports multiple communication methods, such as RS485 communication, and MODBUS protocol.

Insertion Thermal Mass Flow Meter - Features
- Accuracy: +/-1~1.5%
- Working Temperature: Sensor:-40~+220 degC Transmitter:-20~+45 degC
- Measuring Medium: Various of Gas (Except acetylene)
- Pipe Size: DN50-DN2000mmVelocity: 0.1-100Nm/s
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Clamp Thermal Mass Flow Meter | RWMF Clamp
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Clamp Thermal Mass Flow Meter - Overview

This one-of-a-kind mass flow meter is popular in industrial applications because of its design and build. It has no moving parts, a nearly unobstructed flow path and requires no temperature or pressure corrections. It is not affected by vibration on the measurement accuracy. It has good seismic performance and high measurement reliability. It also retains accuracy over a wide range of flow rates. Straight pipe runs can be reduced by using dual-plate flow conditioning elements. Installation and use are easy with minimal pipe intrusions. Mass flow meter sizes range from DN15~DN100mm. Its sensitivity is suitable for low flow rate measurement. Applications include single or fixed gas flow measurements. It measures gas with flow velocity from 100Nm/s to 0.1Nm/s. The flow meter can also be used for gas leak detection. It supports multiple communication methods, such as RS485 and MODBUS protocol for factory automation and integration.

Clamp Thermal Mass Flow Meter - Features
- Measuring Medium: Various of Gas (Except acetylene)
- Pipe Size: DN15-DN2000mm
- Velocity: 0.1-100Nm/s
- Accuracy: +/-1~2.5%
- Working Temperature: Sensor:-40~+220 degC
- Transmitter:-20~+45 degC
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Explosive Environments Mass Flow Controllers | IS-Max
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Explosive Environments Mass Flow Controllers - Overview

The IS-Max can meter flow while controlling pressure to reduce the system complexity of GCs. The IS-Max is unmatched in hazardous applications. It saves space and reduces maintenance costs with a Zone 0-certified, compact, fully integrated device. No purge cabinet is needed. It improves efficiency with repeatable flow and pressure. It is unaffected by fluctuating process conditions compared to rotameters. It allows 24/7, real-time data reporting in hazardous locations. It comes with a lifetime warranty and free technical support. The front panel displays live measurements and makes it easy to make adjustments in the field. It allows consistent and accurate sample batching that can be configured on-site. It comes with ATEX/IECEx certifications to operate in explosive environments. Applications include refineries and petrochemical plants.

Explosive Environments Mass Flow Controllers - Features
- Intrinsically safe
- Minimal maintenance required
- Customisable monitoring and control
- Easy to use and versatile
- Accuracy of flow from ±(0.4% of reading and 0.2% of full scale) to ±(0.8% of reading and 0.2% of full scale)
- 98-129 field-selectable gas calibrations
- The first intrinsically safe instrument for flow control—or controlling pressure, while metering flow
- Easy-to-read display verifies your process instantaneously
- Digital MODBUS or ASCII, or analog communications
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Flange Thermal Mass Flow Meter | RWMF
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Flange Thermal Mass Flow Meter - Overview

The Flange Thermal Mass Flow Meter is popular in industrial applications because of its design and build. It features no moving parts, a nearly unobstructed flow path, requires no temperature or pressure corrections and retains accuracy over a wide range of flow rates. Straight pipe runs can be reduced by using dual-plate flow conditioning elements. Installation is simple, with minimal pipe intrusions and it is easy to use. Suitable for use on all kinds of single or mixed gas flow measurements. It can measure gas with a flow velocity of 100Nm/s to 0.1Nm/s. It can be used for gas leak detection. It supports multiple communication methods including RS485 communication and MODBUS protocol. Applications include dry gas such as air, natural gas, LPG gas, and biogas.
Flange Thermal Mass Flow Meter - Features

Measuring Medium: Various of Gas (Except acetylene)

Pipe Size: (Insert connection) DN50-DN2000mm, In-line connection (DN10-DN2000mm)

Velocity: 0.1-100Nm/s

Accuracy: +/-1~2.5%

Working Temperature: Sensor:-40~+220 degC Transmitter:-20~+45 degC
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Low Pressure Drop Mass Flow Meters | Whisper MW-Series
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Low Pressure Drop Mass Flow Meters - Overview

These Mass Flow Meters measure mass and volumetric flow rates where there is little available system pressure. This includes pressure drops as low as 4.8 mbarD. Whisper devices are for processes with little available inlet pressure or a large amount of back pressure. These devices have a larger flow body and uniquely arranged laminar flow elements, resulting in pressure drops up to 10 times lower than standard devices. Whisper instruments utilise much more sensitive pressure sensors to take full advantage of the lower pressure readings.

Low Pressure Drop Mass Flow Meters - Features
- Simultaneously measure volumetric flow, mass flow, gas pressure, and gas temperature
- Field-adjustable engineering units and STP/NTP conditions
- 98+ preloaded NIST-traceable gas calibrations
- Define and store 20 custom gas mixtures of up to 5 constituent gases
- Backlit display and control configuration
- Integrated touchpad
- Optional integrated dual flow totalisers and alarms
- Each instrument is built to meet your specific process needs
https://www.youtube.com/watch?v=DMSabM9BHlw

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Portable Anti-Corrosive Mass Flow Meters | MBS series
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Portable Anti-Corrosive Mass Flow Meters - Overview

The Portable Anti-Corrosive Mass Flow Meters measure volumetric flow, mass flow, temperature and pressure. They measure mass flow and volumetric flow rates of 130+ gases. This includes 32+ corrosive gases. Additionally, they are able to switch between controlling volumetric flow, mass flow, or pressure. Mass flow meters/controllers therefore double as pressure meters/controllers. Users can also easily change displayed measurement units from an extensive list of engineering units or adjust STP conditions without the need for recalibration. For those who prefer to adjust the setpoint using a knob, an optional controller can be ordered with integrated potentiometer control.

Portable Anti-Corrosive Mass Flow Meters - Features
- Measurement range: 1% – 100% of full scale
- Accuracy: 0.8% of reading and 0.2% of full scale
- Optional high-accuracy: 0.4% of reading and 0.2% of full scale
- Repeatability: ±0.2% of full scale
- Simultaneously measure volumetric flow, mass flow, gas pressure, & gas temp.
- Field-adjustable engineering units and STP/NTP conditions.
- Select process gas from 98+ preloaded NIST-traceable gas calibrations.
- Define and store 20 custom gas mixtures of up to 5 constituent gases.
- Backlit display and control configuration using the integrated touchpad
- Optional integrated dual flow totalizers and alarms
- Full scale ranges: 0.5 SCCM to 5,000 SLPM
- Response time: <10 ms
- Operating temperature: –10°C to +60°C
- Full scale operating pressure: 160 PSIA (11 barA)
- Rechargeable battery lifetime: 18 hrs
https://www.youtube.com/watch?v=6zkaSfZI458

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Mass Flow Controllers | MC series
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Mass Flow Controllers - Overview

Mass flow controllers are used to control the flow of a gas according to a specific flow rate. MC-Series Mass Flow Controllers rapidly reach setpoints and maintain stable control of volumetric flow, mass flow, or pressure for 98+ gases across a very wide flow range. These products are highly customisable for easy integration.

Mass Flow Controllers - Features
- Measure mass flow, volumetric flow, gas pressure, and gas temperature
- Changeable units of measurement
- Gas Select from 98+ preloaded NIST-traceable gas calibrations
- Define 20 custom gas mixtures of up to 5 constituent gases
- Monochrome backlit LCD with integrated touchpad
- Configurable ramp rates and setpoint limits
- Change reference conditions without need for recalibration
- Valve close override and valve open override
https://www.youtube.com/watch?v=r49OvLmr8EU

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Mass Flow Meters | M Series
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Mass Flow Meters - Overview

Concurrently measure mass flow, gas pressure, volumetric flow, and gas temperature for 98+ gases from 0.01% to 100% of full scale. These quick and convenient stand-alone units can be used with or without a computer as all flow data is visible on one screen. It requires no warm-up so it is ready to measure in one second.
- The MW Series for low pressure drop, allows you to measure with minimal effect on pressure or volumetric flow rates and has an even faster fluidic response.
- The durable MS Series made in 316L stainless steel, for aggressive gases, can withstand corrosion.
- The rechargeable MB Series provides 18 hours of operation for easy flow verification.
Mass Flow Meters - Features
- Simultaneously measure gas temp, gas pressure, volumetric flow, and mass flow
- Define and store 20 custom gas mixtures of up to 5 constituent gases
- Select process gas from 98+ preloaded NIST-traceable gas calibrations
- Field-adjustable engineering units and STP/NTP conditions
- Read measurements easily using the backlit display
- Control configuration using the integrated touchpad
- Optional integrated dual-flow totalizers and alarms
- COMMON OPTIONS:
  - Bidirectional Flow Calibration enables readings in both flow directions
  - Integrated Flow Totalizer provides total quantity flowed over time
  - Backlit Color Display shines in low lighting
  - CSA Class 1 Div 2 (ATEX Zone 2) Classification for hazardous environments
  - Watertight, weatherproof cover (IP67) for dusty or outdoor environments
  - Industrial communications: EtherNet/IP, DeviceNet, PROFIBUS, or Modbus
https://youtu.be/rRmQi3zX4jc

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Portable Mass Flow Meters | MB series
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Portable Mass Flow Meters - Overview

These portable mass flow meters measure mass and volumetric flow rates for on-the-go flow calibration, verification, or validation of 98+ gases. This series includes:
- our standard MB
- low-pressure drop MWB
- corrosive-gas-compatible MBS
- and high-pressure MBQ
These mobile units come with features like drop-resistance, 18-hour battery life, and live onscreen readouts of flow, pressure, and temperature. It requires no warmup time and has a response time of less than 10 m/s. These units are ready to perform calibrations, verifications, and validations on site.

Portable Mass Flow Meters - Features
- Process gas from 98+ preloaded NIST-traceable gas calibrations
- Measure volumetric flow, pressure, mass flow, and temperature
- Field-adjustable engineering units and STP/NTP conditions
- Optional integrated dual-flow totalisers and alarms
- Define and store 20 custom gas mixtures of up to 5 constituent gases
- Backlit display and control configuration using the integrated touchpad
https://www.youtube.com/watch?v=6zkaSfZI458

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