Category: Flow Meters

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Flow Meters

Flow meters are devices used to measure the volume/mass of a gas or liquid. Flow meters are referred to by many names, such as flow gauge, flow indicator, liquid meter, flow rate sensor, etc. Most frequently flow meters are used for measuring gasses and liquids in a pipe. Improving the precision, accuracy, and resolution of fluid measurement are the greatest benefits of the best flow meters.

Flow Switch-Piston Type | FPC04
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Flow Switch-Piston Type - Overview

This Piston Flow Switch is a mechanical flow switch used for gases or liquids. It boasts a spring-supported piston and has magnetic triggering of a reed switch. The rugged design makes for a very durable product. Available in plastic or stainless steel.

Flow Switch-Piston Type - Features
- Protection Rating - IP65
- Pressure resistance 100bar (stainless steel)
- Minimal pressure loss
- Good repeatability
- Dirt-resistant
- High switch capability
- Housing: Plastic / Stainless Steel
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Hot Wire Thermal Flow Switch | FTC05
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Hot Wire Thermal Flow Switch - Overview

Based on the thermodynamic principle, this flow switch features two temperature sensors inside the probe: one is for the medium temperature into which it projects, and the other one is heated a few degrees above the medium temperature. When the medium flows, the heat generated in the sensor is diffused by the medium. The difference between these two sensors is used to measure flow rate. It comes in all-metal housing and is suitable for a variety of pipe diameters.

Hot Wire Thermal Flow Switch - Features
- The flow switch is suitable for oil, water, gas, and liquid level detection
- Selectable output: PNP/NPN/Relay
- Metal shell design
- Easy installation
- Measuring rod withstands pressure of 10 bar (length can be customised)
- LED light indicator, simple shape
- Can set the switch point or range
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Air Velocity Transmitter | FTS34/35
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Air Velocity Transmitter - Overview

The Air Velocity Transmitter is a Thermal Mass Flow Sensor / Transmitter using the mass flow measuring principle. This transmitter is able to switch between measuring units [m/s], [ft/s], [km/h], [mph], [knot], and is available in either duct or remote type installation. The Air Velocity Transmitter uses stable electronics with good accuracy. It has solid performance and low flow sensitivity. It is suitable for use in industrial processes to monitor gas and flow and is widely used in the Building, Pharmaceutical, Paper, and Biotech industries.

Air Velocity Transmitter Features
- Linear calibration function
- Option RS-485 Communication Interface, Modbus RTU protocol
- Configuration measuring rage, analog output, station number by dip switch & RS-485
- Switch for physical quantity： [mph], [knot], [m/s], [ft/s], [km/h],
- Off SET function by bottom or RS-485
- Programmable software: DATA LOGGER, record, and chart analysis
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Average Flow Measuring Pitot Tube | AFMT
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Average Flow Measuring Pitot Tube - Overview

The Average Flow Measuring Pitot Tube is a probe that is placed into the duct to measure flow. This is often used alongside a differential pressure transmitter in flow measurement. The various pressure detecting openings on the AFMT pick up the average flow inside the duct. AFMT then calculates the flow velocity by measuring the difference between dynamic pressure ∆P (total pressure and static pressure) and flow average velocity V. Conversion from data to flow rate happens quickly and accurately. This product is corrosion resistant, heat resistant, dust resistant, and anti-clogging. It is widely used in harsh environments such as exhaust gas emission, vacuuming, and dust wind speed calculation. Also used in ventilation and air-conditioning systems.

Average Flow Measuring Pitot Tube - Features
- Stainless steel housing
- High-temperature resistance and corrosion resistance
- Can measure micro flow rates
- Connected with an eYc Micro Differential Transmitter (PHM33 or PMD33) with a Multi-function display (SD06 or DPM02) this becomes a great solution to measure the dynamic pressure(ΔP) of the airflow in the pipeline and calculate the wind speed, air volume, and temperature
- Applied in harsh environments, exhaust gas emission, environmental protection engineering. The installation location is not limited
- Dust Resistant, Anti-clogging
- Can be customized according to customer needs
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Calorimetric Air Flow Meter | FTM06C-A
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Calorimetric Air Flow Meter Overview

This flow meter utilises the calorific measuring principle. Two measuring elements as well as a heat source are located on the measuring tip. The effect of the air flowing through the meter is that heat energy is absorbed and conducted away, resulting in a lower temperature. The resulting temperature change is an indication of flow. This Air Flow Meter is suitable for various severe environments and can therefore be used in slightly corrosive air.

Calorimetric Air Flow Meter - Features
- Thermal mass flow
- Quick response
- Good sensitivity
- Turndown ratio 500 ：1
- High precision & accurate sensing at the lowest flow rate for metering applications
- Output: Analog / RS-485
- Use measured with square pipe or 2" pipe above
- IP rating： IP65
- Stainless steel casing, suitable for various severe environments
- Display Cumulative flow / Instantaneous flow
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Hot Wire Air Velocity Transmitter | FTS140
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Hot Wire Air Velocity Transmitter - Overview

FTS140 is a hot wire air velocity transmitter, using the mass flow measuring principle. Using a stable electrical bridge with good accuracy, it has stable performance and low flow sensitivity. It is suitable for use in HVAC air conditioning environment measurements, optimisation and adjustment of system performance, and ventilation control. Duct-type installation is used extensively in environmental engineering projects, buildings and factories making for easy installation.

Hot Wire Air Velocity Transmitter - Features
- Accuracy(+25°C)：±3%F.S.
- Hot wire mass flow transmitter
- IP rating: IP54
- Linear adjustment function
- Switching analogue output by dipswitch
- Offset function by button
- The housing and probe material is PC fire-proof
- Measuring range：0 ... 20 m/s
- Minimum measuring range：0.2 m/s
- Signal：4 ... 20 mA / DC 0 ... 10 V
- ( ILAC / TAF ) Test report
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Hot Wire Air Velocity Transmitter for Probe Type | FTS07
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Hot Wire Air Velocity Transmitter - Overview

The Hot Wire Probe measures heat loss of an electrically-heated wire placed in the air stream. When the Hot Wire Probe is placed in an airstream the heat is transmitted from the wire to the air and the temperature of the wire decreases. Resistance of the wire measures the flow rate of the air. This probe is ideal for use in monitoring the HVAC process, environmental control, and clean rooms, as well as laminar flow control.

Hot Wire Air Velocity Transmitter - Features
- Measuring range : 10 m/s , 20 m/s
- High stability and repeatability
- Smaller tolerance in setting angle
- An economical choice, high C/P ratio
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Industrial Grade High Mass Flow Transmitter | FTM94/95
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Industrial Grade High Mass Flow Transmitter - Overview

This industrial-grade thermal mass flow transmitter is housed in a rugged aluminium alloy case, making it suitable for use in a variety of harsh environments. It has a high accuracy level and long-term stability. It comes as either a duct or remote type installation and is easy to install. Suitable for a wide range of pipe diameters. The Thermal Mass Flow transmitter has an LCD Display for air velocity and temperature and has the option to display cumulative flow: m³, L. It can also switch between the following measurements for air velocity and volume: [m/s],[ft/s],[Nm³/h],[Nm/s],[L/min], and [m³/min].

Industrial Grade High Mass Flow Transmitter Features
- IP67 Rugged aluminium alloy case
- Fit for use in a variety of harsh environments
- Easy to install
- High accuracy
- Long-term stability
- Switchable physical quantities: Nm/s, L/min, m³/min (Air velocity & volume), m/s, ft/s, Nm³/h,
- LCD Display of cumulative flow: m³, L (Optional)
- LCD Display of air velocity and temperature
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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 Field Calibration Units | PCU
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Mass Flow Field Calibration Units - Overview

This Portable Calibration Unit combines up to 3 high-accuracy flow meters across a range of up to 500 SLPM. It's rugged design and industrial carrying case allows for accurate and versatile on-the-go calibration.

Mass Flow Field Calibration Units - Features
- Rugged, drop-resistant hard case
- Portable
- Up to 3 high-accuracy mass flow meters mounted internally
- Calibrate multiple instruments across a combined operating range up to 100,000:1 (for example 5 SCCM to 500 SLPM)
- Easy push-connect fittings or optional compression fittings
- Powered by included AC/DC power supply adaptor or 4 AA batteries
- USB A-B cable for computer connection
- NIST-traceable calibration certificates for each flow meter
- FlowVision software
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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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OEM Air Velocity Transmitter | FTE120
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OEM Air Velocity Transmitter - Overview

These compact and lightweight transmitters are easily and quickly installed. It is used for low wind speed measurement. Its polycarbonate housing ensures excellent electrical insulation and flame retardant properties. Widely used in industrial applications such as air handling systems, fume hoods, biological safety cabinets, clean rooms, and laboratories.

OEM Air Velocity Transmitter Features
- RS-485 programmable software: Data logger / Charts
- 4 ... 20 mA / 0 ... 10 V output
- Accuracy: ±2% F.S.
- Small size and lightweight
- Can be mounted quickly and easily
- 0.1 ... 5 m/s, low wind speed measurement
- Polycarbonate housing resulting in great electrical insulation and flame-retardant properties
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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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Thermal Air Velocity Transmitter | FTS140
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Thermal Air Velocity Transmitter - Overview

The Thermal Air Velocity Transmitter uses the mass flow measuring principle to measure flow. This transmitter is available as a duct/flange type installation. Measuring Range 0.2 - 20m/s.

Thermal Air Velocity Transmitter - Features
- Temperature compensation
- Linear adjustment function
- Switching analogue output by dip switch
- Off set function by button
- IP rating：IP54
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Thermal Mass Flow Transmitter | FTM06D
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Thermal Mass Flow Transmitter - Overview

The FTM06D Thermal Mass Flow Transmitter uses thermodynamic principles to measure air volume and air velocity. There are two temperature sensors inside the probe: one for temperature measurement, and one for temperature measurement after heating. Temperature differences between the two sensors are used to calculate measuring flow rate. This transmitter has all-metal housing and is suitable for a variety of pipe diameters. Widely used in industries like Electronics, Compressed Air, Papermaking, Food, Pharmaceuticals, Biotech, Hospitals, and other factories.

Thermal Mass Flow Transmitter - Features
- Thermal mass flow sensor
- Can measure air volume and air velocity
- Analog / RS-485 / Impulse output
- Accurate measurement
- Using constant temperature anemometer(CTA) technology, good sensitivity
- Unit setting：[L/min], [°C], [°F], [m/s], [ft/s], [Nm³/h]
- Stainless steel housing, suited to a variety of harsh environments
- Built-in temperature compensation
https://www.youtube.com/watch?v=9vIttv1x0eo&t=8s

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