Air Velocity Transmitter

Product Details:

Protection IP65
Temperature Range -10C to +60C
Pressure Range 010 bar (air pressure)
Application Media Air and compatible gases
Sensor Type Thermal anemometer (hot wire type)
Wind Speed 030 m/s
Current Range 4-20 mA output
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Air Velocity Transmitter Product Specifications

Pressure Range 010 bar (air pressure)
Power Consumption Max. 1.5 W
Wind Speed 030 m/s
Sensor Type Thermal anemometer (hot wire type)
Application Media Air and compatible gases
Protection IP65
Temperature Range -10C to +60C
Accuracy 2% of full scale
Display Type Digital LCD
Power Supply 24 V DC
Range 0 to 30 m/s
Material ABS housing with stainless steel probe
Equipment Type Air Velocity Transmitter
Measurement Range 030 m/s (air velocity)
Current Range 4-20 mA output
Connectivity Type 2-wire / 3-wire output, analog (0-10V/4-20mA)
Diameter Approx. 18 mm sensor probe
Resolution 0.01 m/s
Humidity % 5% to 95% RH (non-condensing)

Product Description

AVT series devices include:

Separate readings and outputs for air velocity and temperature
Proportional output options: voltage (010 V) and current (420 mA)
PID controller for air velocity (-D models)
Three field selectable measurement ranges for air velocity, selectable with jumpers (models without display)
Freely selectable measurement range for air velocity via menu (-D models)
Field selectable measurement units (-D models):
air velocity: m/s, ft/min
temperature: Celsius, Fahrenheit

AVT series device options offer:

Display (-D models)
Field adjustable relay (-R models)
Modbus (-MOD models)

Specification

Air velocity measurement:	Measurement range: 02 m/s, 010 m/s, 020 m/s, freely selectable Accuracy (typ at 25 C): v 0.15 m/s and 2 m/s (0.2 m/s + 2 % from reading) v > 2 m/s and 10 m/s (0.5 m/s + 3 % from reading) v > 10 m/s (1.0 m/s + 3 % from reading)
Temperature measurement:	Measurement range: -2550 C (probe) Accuracy (25 C): 0.5 C (air velocity > 0.5 m/s)
Measuring units:	Air velocity: m/s or ft/min Temperature: C or F
Supply voltage:	24 VDC 10 % / 24 VAC 10 %
Current consumption:	max. 80 mA + 40 mA with mA output + 10 mA with relay option (DC supply voltage)
Output signal 1 (T out [C]) :	010 Vdc, load > 1 k 420 mA, load 20400
Output signal 2 (v out [m/s]) :	010 Vdc, load > 1 k 420 mA, load 20400
Optional relay output:	250 Vac, 6 A res., adjustable operating direction, switching point and hysteresis
Operating temperature:	-2550 C (probe) 050 C (transmitter housing)
Probe:	Stainless steel, adjustable immersion length, mounting flange included
Protection standard:	IP54, cable downwards

Precision Air Velocity Monitoring

Designed for diverse industrial and commercial applications, this air velocity transmitter guarantees accurate, real-time measurements of airflow. Thanks to its hot wire anemometry sensor and fast response time (<1 second), it excels in dynamic environments such as HVAC ducts, ventilation systems, and cleanrooms. The selectable analog output ensures compatibility with most building management and automation systems.

User-Centric Design and Installation

This transmitter allows for easy duct or wall mounting, supported by a robust IP65 ABS enclosure and stainless steel sensor probe. The 1.5-meter standard cable, extendable as needed, offers installation flexibility. Its digital LCD display provides clear visibility, while the selectable high/low velocity alarm enhances operational safety. Lightweight at approximately 120 grams, it suits both retrofit and new installations.

FAQ's of Air Velocity Transmitter:

Q: How does the air velocity transmitter measure airflow?

A: The transmitter uses a thermal anemometer (hot wire) sensor with a constant temperature anemometry principle, which detects changes in heat dissipation caused by air movement. This enables highly accurate, rapid measurements of air velocity.

Q: What is the process for configuring the output signal and alarm settings on this transmitter?

A: You can select between a 0-10V or 4-20mA analog output using onboard jumpers or DIP switches. Alarm thresholds for high and low air velocity can be set digitally, allowing tailored alerts for varying application requirements.

Q: When should the air velocity transmitter's cable be extended?

A: The standard cable length is 1.5 meters, but if your installation location is farther from your control panel or data acquisition system, the cable can be extended to ensure reliable connectivity.

Q: Where can this device be mounted for optimal performance?

A: The transmitter is designed for flexible placement and can be mounted either on ductwork or a wall. For best results, install it in an area where airflow is representative of the monitored system, such as at main duct runs or near sensitive ventilation zones.

Q: What are the main benefits of using this air velocity transmitter?

A: Key benefits include fast and accurate airflow monitoring, configurable outputs for system integration, advanced alarm functionality, and resilient design with IP65 protection. This improves HVAC efficiency, environmental control, and system safety.

Q: How does the display assist in daily usage and monitoring?

A: The digital LCD provides immediate, clear readouts of current velocity, making on-site verification and adjustment straightforward without extra equipment.

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Air Velocity Transmitter Minimum Order Quantity : 1 Power Supply : 24 VDC 10 % / 24 VAC 10 % Display Type : Digital Only Color : White Product Type : Air Velocity Transmitter Usage : Industrial

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