Portable Air Flow Velocity Measurement Equipment

Whats/App: +86 156 1874 6768

Web: standard-groups.com

Standards

The system can be used in accordance with the following standards and technical references:

(1) GB/T 1236 Industrial Fans – Performance Testing Methods

(2) GB/T 10178 Industrial Fans – Field Performance Testing

(3) ASHRAE Handbook – Fundamentals (Air Flow Measurement and Testing Sections)

Technical data

Parameter	Unit	Value
Test flow rate	m³/h	20 … 900
Air flow velocity	m/s	1 … 40
Test specimen dimensions	mm	max. 485 × 600
Differential pressure of test specimen	Pa	–
System dimensions (W × H × D)	mm	2500 × 2660 × 1300
Weight	kg	approx. 550

Features

wide range of air flow rates 20 ... 900 m³/h (expendable up to 1200 m³/h)

up to 100 hPa of pressure drop over unit under test and periphery (connectors, hoses)

fast data acquisition (turbulences) and graphic display of data

Principle

Air is blown through the test specimen and the velocity field is measured on the downstream side with the aid of a hot-wire anemometer. This automatically scans a plane in the air outlet by means of a traversing device.

Accessories

hot wire anemometer set

picoscope (PC-oscilloscope)

Test Procedures

Mount the test specimen securely to the air flow system and ensure airtight connections;

Set the required air flow rate according to the test plan and component specifications;

Position the hot-wire anemometer downstream of the specimen outlet;

Start the automatic scanning process to measure the velocity field across the defined plane;

Record and process the measured velocity and turbulence data;

Analyze the flow distribution results and generate test reports or comparison data for simulations.

Maintenance Information

Regularly calibrate the hot-wire anemometer to maintain measurement accuracy;

Keep the scanning mechanism clean and free from dust or debris;

Inspect hoses, connectors, and seals to prevent leakage;

Avoid exposing the sensor to high temperatures, dust, or liquid droplets;

Store the system in a clean, dry environment when not in use.

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