Category: Air Velocity

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Air Velocity

Air velocity meters are used to measure airspeed and pressure. Also known as anemometers. These meters can often test other variables such as air temperature, pressure, relative humidity, and wind-chill factors.

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Fan Anemometer | FA 430

Fan Anemometer - Overview

This versatile instrument is your comprehensive solution for precise ventilation diagnostics. It is designed to deliver accurate, on-the-spot readings right where they matter most. It instantly measures air speed, temperature, and relative humidity directly at the supply and return vents to ensure system balance. It also has integrated CO₂ monitoring. Quickly pinpoint hidden air leaks within the ductwork or structure to prevent energy loss and optimise system efficiency. It also features integrated volume flow calculation. Direct measurements regardless of vent shape. Pair the device with a cone attachment for precise volume flow at air vents, or a funnel attachment for direct flow rate readings at air nozzles.

Fan Anemometer - Features
- Measurement of air speed, temperature, and humidity at air vents
- Measurement of CO2 at the air vents (Wöhler FA 430 only)
- Detection of air leaks
- Integrated measurement of volume flow
- Direct measurement of volume flow at air vents in combination with the cone
- Direct measurement of flow rate at the air nozzle in combination with a funnel
- Measured values are shown in the Wöhler FA 4xx App
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Multifunction Pressure and Flow Meter | DC410 Flow

Multifunction Pressure and Flow Meter - Overview

This multifunctional handheld instrument is used to measure differential pressure, airflow, air speed and temperature, as well as for the registration of humidity and barometric pressure. It is suitable for use for acceptance measurements at ventilation systems according to DIN EN 12599; 4 PA Pressure Test to confirm the combustion air availability; measurement of the ventilation loss and the surface loss; flow pressure, installation pressure, standing pressure, jet pressure; flow measurement in air and flue gas ducts; and a data logger. It is highly accurate and incorporates "no-drift" technology. It is tested to comply with standards for ventilation for buildings. It has a USB interface to communicate with your PC, or can print directly with the Wöhler TD 600 thermal fast printer. It can be operated with one hand and has a 4-button keypad.

Multifunction Pressure and Flow Meter - Features
- Multi-functional
- Highly accurate
- Technician friendly
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Handheld Flow Anemometer Thermographer | GT8907
Price range: R995.00 through R2,395.00 ex vat
Handheld Flow Anemometer Thermographer - Overview

This multifunctional digital anemometer is a professional instrument for measuring wind speed, temperature, and humidity. It is designed for wind speed measurement in engineering, quality control, and health control. Applications include factories, schools, offices, transportation routes, families, etc.

Handheld Flow Anemometer Thermographer - Features
- Measures current wind speed, temperature and humidity
- Measures current air volume, temperature and humidity
- Measures wind speed/ MAX wind flow/min wind flow
- 2/3 wind flow value/ average value
- Wind speed/flow units and temperature units selection
- Measure wind direction angle
- Real-time measurement when connecting USB with computer software
- Backlight and data holding (HOLD)
- Low battery indication
- Automatic shutdown setting
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Hot Wire Air Velocity Transmitter | FTS140
R2,222.00 ex vat
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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OEM Air Velocity Transmitter | FTE120
R3,958.00 ex vat
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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Average Flow Measuring Pitot Tube | AFMT
Price range: R4,580.00 through R10,132.00 ex vat
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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Inline Air Flow Transmitter | FTE120-I
R4,614.00 ex vat
Inline Air Flow Transmitter - Overview

This inline air flow sensor has multiple diameters to choose from and uses an air volume standard calibration system (sonic nozzle) for flow calibration. Suitable for use in pneumatic systems, compressed air systems, and industrial machinery, as well as various industrial and electronic component processing processes. In industrial automation, accurate measurement of airflow is essential. Users can improve resource utilisation whilst saving manufacturing costs if done correctly. Leakage can also be monitored which enables timely repairs and reduced personnel injuries and accident risks. Airflow can also be measured in pneumatic systems to ensure the stability of airflow in the system and ensure normal system operation.

Inline Air Flow Transmitter - Features
- Multiple diameter ( DN10 / DN15 / DN20 / DN25 )
- Optional multiple output : 4 ... 20 mA / 0 ... 10 V / RS-485 / Frequency / Pulse ( Option )
- Accuracy : ±2% F.S. , Operating pressure : Max. 10 bar
- Calibrated by sonic nozzles calibration system
- Easy installation
- Polycarbonate housing, aluminium alloy pipe
- RS-485 programmable software : Data logger / Charts
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Hot Wire Air Velocity Transmitter for Probe Type | FTS07
R2,367.00 ex vat
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
Price range: R37,101.00 through R56,801.00 ex vat
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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Thermal Air Velocity Transmitter Industrial Grade | FTM84-85
Price range: R21,858.00 through R25,211.00 ex vat
Thermal Air Velocity Transmitter - Overview

The Thermal Air Velocity Transmitter is an industrial grade, high-accuracy transmitter which operates at high speed and is quick to respond. It comes housed in a rugged aluminium casing which is IP67 rated and is suitable to be used in various harsh environments. It has an LCD monitor which displays air velocity and temperature.

Thermal Air Velocity Transmitter - Features
- Capable of temperature compensation
- Linear calibration air velocity by computer, analogue output or RS-485(Optional)
- High-speed, high-accuracy measurement, quickly response
- Thermal mass flow sensor
- LCD, display air velocity and temperature
- Switch multifunction physical quantities：[m/s]、[ft/s]、[km/h]、[mph]、[kont]
- DIP SWITCH and RS-485 function
- IP rating: IP67, rugged aluminium case, fit for a variety of harsh environments
- Follow customer needs to plan measuring range, analogue output, stations, and zero-point OFF SET or RS-485 adjustment zero-point OFF SET
- Free programmable software: Data logger / Maximum record 65535 data / Charts
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Air Velocity Transmitter | FTS34/35
Price range: R9,240.00 through R9,273.00 ex vat
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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Handheld Air Velocity, Humidity and Temperature Meter AFP1
R5,162.00 ex vat
Handheld Air Velocity Meter - Overview

The intelligent AFP1 multi-parameter measuring instrument is ideal for spot measurements in HVAC systems. Thanks to easy operation via a smartphone, it is possible to take random measurements and record, export and display data as wanted. The AFP1 sensor is operated via Bluetooth communication with the ROTRONIC smartphone app, which can be obtained free of charge from the App Store (iOS) or Play Store (Android). The app offers functions to display, log and send the required measured values by e-mail. It is also possible to define parameter-specific settings and options for the measurement.

Handheld Air Velocity Meter - Features
- Intelligent multi-parameter measuring instrument for air velocity, humidity and temperature
- Small vane anemometer for in-tube measurements
- Telescopic rod extends to 1.2 meter
- Smartphone connection via Bluetooth®
- Easy data logging via iOS or Android app
- Direct volume flow calculation
- Numeric or graphic display
- Simple data export for evaluation on a PC
Delivery package
- Factory certificate
- Short instruction manual
- APP (online)
- Batteries 2 x 3 V (CR2032)
- Soft case
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Flow Measurement Transmitter -AF1
R2,215.00 ex vat
Flow Measurement Transmitter -Overview

The AF1 series is a cost-effective, high-precision and stable transmitter for measuring air velocity and temperature. The devices have a calorimetric sensor and outstanding long-term stability. The measuring range and the output signals can be configured easily with Software or using the integrated DIP- switches.

Flow Measurement Transmitter - Features
- High degree of stability and repeatability
- Compact design
- The outputs and measuring ranges can be configured using DIP switches
- Simple mechanical installation
- Outstanding price/performance ratio
- Ideal for HVAC applications
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Inline Type Air Flow Transmitter | FTM06D-I

Inline Type Air Flow Transmitter - Overview

This sensor's superior performance and convenient features address a wide range of measurement requirements in different application environments. It is the ultimate tool for precise airflow measurement. The FTM06D-I Inline Type Air Flow Transmitter uses the thermal mass flow principle for accurate airflow measurement. This principle enables accurate measurement, rapid response and stability, and delivers highly reliable results. It is capable of measuring airflow of up to 848 m³/h. Additionally, it features a cumulative flow function, allowing users to achieve comprehensive measurements and monitoring. The FTM06D-I undergoes calibration through an air volume standard calibration system providing users with a high accuracy of ±1.5% F.S. The inline-type design is compact and offers multiple pipe size options (DN15 / DN25 / DN40 / DN50). It is easy to install and suitable for environments with limited installation space. It can be seamlessly integrated into various equipment and systems. It also offers multiple signal output options, including 4 ... 20 mA / 0 ... 10 V / RS-485 / Frequency / Pulse. This allows users to easily integrate the sensor into their systems. Users can adjust the output settings through the free UI software and can simultaneously read instant airflow and cumulative flow through RS-485 connection.

Inline Type Air Flow Transmitter - Features
- Accurate Thermal Mass Flow Principle
- Achieving 1.5% F.S. accuracy through airflow calibration
- Ideal for High Airflow Measurement
- Airflow range up to 848 m³/h
- Instantaneous and cumulative flow
- Multiple pipe size options (DN15 / DN25 / DN40 / DN50)
- Compact Inline Type Design for Various Environments
- Multiple signal output for Convenient Monitoring
- Stainless steel housing, aluminium alloy pipe
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Calorimetric Air Flow Meter | FTM06C-A

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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