PCE-A420 cup vane anemometer
digital cup vane anemometer, wind direction will not influence the measurement

Without a doubt, the main advantage of this handheld cup vane anemometer is that it doesn't need to be held exactly in the direction of the wind. Anemometer with impellers normally have to be held exactly in the direction of the air flow to take accurate measurements. The sensitivity of the system of a cup vane anemometer responds to the smallest of air currents.
At this link you will find other anemometer with memory and an interface for connectivity to a computer and software to allow for data transfer. This link has similar anemometers but with a measurement range of up to 45m/s.

 - Data logger for 100 readings
 - Very sensitive cup vane system
 - Ingress protection IP 65
 - Wind direction is of no importance to the cup
   vane anemometer
 - Variety of units to choose from: m/s, km/h,
   ft/min, knots or miles/h
 - MIN, MAX and HOLD functions
 - Auto shut-off (auto disconnect)
 - Large LCD

PCE-A420 anemometer

View or print the user's manual

To perform a correct measurement with the PCE-A420 cup vane anemometer: First turn the meter on, then hold the meter vertically so the cups can rotate until the wind velocity is displayed. In the following picture you can see how to measure wind speed with the PCE-A420 cup vane anemometer.
As it has previously stated, with the PCE-A420 cup vane anemometer different measurement units can be selected: m/s, km/h, knots, ft/min and mph. To change measurement units in the PCE-A420 cup vane anemometer you must press the key Data Hold until the desired unit is displayed, then depress the key. You can save the unit in the memory of the PCE-A420 cup vane anemometer to be displayed every time the meter is turned on. In case of the messages Hold or REC appear in the display you cannot change the measurement units. Besides, you could fix a value in the PCE-A420 cup vane anemometer by pressing the Hold key during the measurement. To deactivate this function please press the Hold key again.  

Contents
PCE-A420 cup vane anemometer, batteries, case and user's manual.

ISO Calibration and certification
An ISO calibration certificate can be acquired with our cup vane anemometer. It includes a control document containing the company contact details consisting on a laboratory calibration and a certification to meet ISO standards. This means that the cup vane anemometer meets the minimum requirements of the national body of measurement and it can be included in your internal set of measuring instruments. Further information:

Calibration: Control of measurement magnitudes correction of measuring instruments without the intervention in the measurement system, or the determination of the systematic display deviation in relation to the real value of the measuring magnitude.

Calibration document or certificate: document with the technical properties of the device according to the national organization of measurement.

Calibration interval: to perform correct measurements, devices must be calibrated at regular intervals. This period of time is called calibration interval.  It's difficult to determine this period with accuracy but you should consider the following factors:

· Measuring magnitude and permitted tolerance limit

· Performance of the measuring instruments

· Frequency of use

· Operating conditions

· Previous calibrations stability

· Measuring accuracy required

· Determining factors of the quality control systems used by companies

This means that the user is in charge to check and control the interval between calibrations. We recommend that this internal between calibrations should be between 1 and 3 years. We can also offer our expert advice to solve any doubts relating to the process of establishing a calibration interval.

Contact:
Companies House England
Tursdale Business Park
Co. Durham - DH6 5PG
United Kingdom
Phone. +44 ( 0 ) 191 377 3398
Fax +44 ( 0 ) 191 377 3357

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Below you will find an overview of the different product groups of measuring instruments