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. These wind movement testing devices are common in HVAC, engineering, and weather forecasting.

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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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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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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Lambrecht Static Wind Sensor PREOS 16440
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Lambrecht Static Wind Sensor - Overview

The static hotwire air flow meter, also known as a Thermal Anemometer, is specially designed for extreme environmental conditions including very cold climates. With no movable elements, it can withstand winds of up to 0...100 m/s and measure wind speeds of up to 65 m/s. The extremely robust and compact sensor has a high-quality, pollutant-resistant housing made of anodised aluminium.

Lambrecht Static Wind Sensor - Features
- no movable measuring elements
- measures wind direction and wind speed
- standard RS 422 interface with ESD protection
- ASCII data protocol according to NMEA 0183
- simple, space-saving assembly
- analogue output 4...20 mA for wind speed and wind direction
- power supply 18...32 VDC with integrated overvoltage protection
- integrated sensor head heating and heating ring in the base to prevent a build-up of ice and snow at the sensor
[embed]https://youtu.be/vb2-UIyGk0A[/embed]

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Hand-held Multiprobe Anemometer | MiniAir20
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Hand-held Multiprobe Anemometer - Overview

Hand-held measuring instruments to measure flow velocity of gaseous and liquid media, relative humidity and temperature. It features high precision and robustness and is especially suitable for mobile and laboratory applications.

Hand-held Multiprobe Anemometer - Features
- Very simple operation, hand keyboard
- Easy to repair on site thanks to the snap-on head principle
- Momentary value measurement
- All three channels can be displayed simultaneously
- IR interface for on-site report printer
- Accuracy: +1.0 % f.e. +1.5% f.m. (for MiniAir20 Mini)
- Automatic sensor detection
- Interval measurement
- Average, minimum and maximum values can be displayed simultaneously
- Storage on microSD card
- Battery operation, mains operation possible
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3
Thermoelectric Anemometer for low airflow | ThermoAir3
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Thermoelectric Anemometer for low airflow - Overview

The ThermoAir3 is a specialist instrument for measuring very low airflow, degree of turbulence, and relative humidity (with an optional sensor for humidity measurement). Includes automatic temperature compensation, barometric pressure correction for local altitude, simple zero adjustments, individually adapted measuring sensor and our SCS wind tunnel guarantee high precision measurement and simple handling.

Typical applications for this instrument are very small flow rate measurements in laboratories, clean rooms, air conditioning, drying and refrigeration installations, and workplace comfort and well-being measurement.

Thermoelectric Anemometer for low air flow - Features
- Flow from 0,015 m/s
- Automatic temperature compensation
- Multi-sensor anemometer for flow and humidity measurements
- 100% guaranteed measuring tolerance
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Vane Anemometer | 1468
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Vane Anemometer - Overview

Sturdy and compact for fantastic air speed measurement. For mobile or stationary use. The cost-saving variant (1468) transmits an active analog output signal. It does not require any auxiliary power and has robust aluminium blades. High resolution, low starting values, and a large temperature range of application are characteristics of the variants with inductive proximity switches acc. to NAMUR. Bidirectional flow measurements are made possible with unit (1468 S9) by two inductive sensors and a rotational direction indicator.

Vane Anemometer - Features
- 10 blade impeller warrants fast response
- Wear-resistant measuring elements
- 3 variants for specific requirements available
- Cable length 3m
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RS232 Wind Speed and Direction Sensor ARCO-NAV
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Wind Speed and Direction Sensor - Overview

The classic combination sensor for off-shore applications. The robust design is made from material resistant to seawater with a special coating guarantee. High reliability and durability. Wind values will be given as NMEA protocol serially every minute. For applications close to the sea this sensor is the first choice for either extreme weather conditions or at sea.

Wind Speed and Direction Sensor - Features
- Special coating for durability
- Combination sensor design for universal use
- Best material quality and precision for low start-up values
- Wide measuring range
- Wear-free data collection for high accuracy and resolution of the measuring values
- Serial interface with NMEA 0183 p
- 24V DC Power Supply
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Flow Measurement Transmitter -AF1
R1,923.00 – R2,910.00
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
- Modbus RTU via RS485
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