AVM410-AVM420-AVM440 Alnor Velometer Thermal Anemometer

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AVM410-AVM420-AVM440 Alnor Velometer Thermal Anemometer Specification

Protection
IP40 (probe only)

Humidity %
0 to 95% RH (non-condensing)

Measurement Range
0 to 6000 ft/min (0 to 30 m/s)

Connectivity Type
USB interface (AVM440)

Flow Rate
0 to 99,999 cfm (flow calculation mode)

Equipment Type
Thermal Anemometer (Velometer)

Resolution
1 ft/min (0.01 m/s)

Application Media
Air and non-explosive gases

Temperature Range
0 to 60C (32 to 140F)

Sensor Type
Thermal sensor

Diameter
Probe diameter: 8 mm

Wind Speed
0 to 30 m/s

Material
High-impact plastic housing

Power Supply
4 x AA alkaline batteries or optional AC adapter

Power Consumption
Low power consumption (<1W)

Accuracy
3% of reading or 3 ft/min (whichever is greater)

Display Type
Digital LCD display

Range
0 to 6000 ft/min

Weight
Approx. 320 g

Memory
Up to 99 readings (model dependent)

Storage Temperature
-20 to 70°C

Operating Altitude
Up to 2000 meters

Auto Power Off
Enabled (user selectable)

Response Time
1 second

Dimensions
193 x 60 x 45 mm (unit body)

Data Hold Function
Yes

Backlight
Available (model dependent)

About AVM410-AVM420-AVM440 Alnor Velometer Thermal Anemometer

Applications

HVAC system performance
Commissioning
Plant maintenance
Critical environment certification
Duct traverses
Face velocity measurement
Included Items
Instrument
Hard carrying case
4 alkaline batteries
Operation and service manual
NIST calibration certificate

Features and benefits

Range is 0-4000 ft/min (0-20 m/s)
Includes telescopic straight probe
Large, easy to read display
Press button to hold reading
Weighs 0.6 lbs (0.27 kg)

Fast and Reliable Measurements

With a response time of just 1 second and high-accuracy thermal sensors, the AVM410, AVM420, and AVM440 provide immediate and dependable readings in a measurement range of 0 to 6000 ft/min. The digital LCD display and backlight option (model dependent) ensure clear visibility in all lighting conditions, making them highly suited for rapid diagnostics or routine monitoring.

Flexible Data Management

These anemometers feature a data hold function and memory capacity for up to 99 readings (depending on model), allowing users to store and recall crucial measurements onsite. The AVM440 model also supports USB connectivity for effortless data transfer to PCs, simplifying analysis and reporting for technicians and engineers.

Durable and User-Friendly Design

Constructed with high-impact plastic housing and protected by an IP40-rated probe, these devices are built to withstand daily field use. Powered by four AA batteries or an optional AC adapter, they guarantee low power consumption and extended operation while weighing only 320 grams for easy portability.

FAQ's of AVM410-AVM420-AVM440 Alnor Velometer Thermal Anemometer:

Q: How do I use the data hold function on the AVM410, AVM420, or AVM440?

A: To activate the data hold function, simply press the dedicated 'Hold' button during measurement. This will freeze the current reading on the display, allowing you to record or review it without interference from fluctuating air velocities.

Q: What models come with a backlight and USB connectivity?

A: The availability of a backlight and USB interface depends on the model. The backlight feature and USB connectivity are available on the AVM440, allowing for convenient operation in low-light environments and easy data transfer.

Q: When should I select auto power off and how does it benefit me?

A: The user-selectable auto power off function conserves battery life by automatically turning off the device after a period of inactivity. It's particularly useful when conducting multiple measurements throughout the day, ensuring the instrument is ready for use whenever needed.

Q: Where can the AVM series anemometers be used safely?

A: These anemometers are designed for use in indoor and sheltered outdoor environments, at operating altitudes up to 2000 meters. They are suitable for air and non-explosive gases in HVAC, laboratories, cleanrooms, and industrial facilities.

Q: What is the process for recalling data stored in memory?

A: To recall stored data, use the interface buttons to cycle through recorded readings on the device's LCD. For models equipped with USB connectivity, data can be transferred to a computer for further analysis.

Q: How does the AVM series ensure measurement accuracy?

A: The AVM410, AVM420, and AVM440 utilize a high-precision thermal sensor that offers accuracy of 3% of reading or 3 ft/min (whichever is greater), across a wide range of 0 to 6000 ft/min. This provides reliable results for critical air velocity and flow assessments.

Q: What are the primary benefits of using a thermal anemometer like the AVM series?

A: Thermal anemometers such as the AVM series deliver quick, precise measurements with minimal user intervention, offer easy data handling, and operate efficiently in varied conditions. Their portability, durability, and user-friendly features make them an excellent choice for professionals needing accurate, repeatable airflow assessments.

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