6/21/2023 0 Comments Anemometer calibration![]() These instruments are mainly classified into two major categories: those that measure the velocity (speed) of the wind and those that measure the pressure of the wind. As any other instrument used for measurements, anemometers require a proper calibration in order to make sure that they measure correctly.īefore studying their calibration procedure, it is important to see the main types of anemometers and their principals of operation. But they are also used in industrial processes, in automotive industry, in aerodynamics and in various environmental applications. Anemometers are mainly used in weather stations for meteorological purposes. The name of the instrument is derived from the Greek word “anemos” which means “wind”. – Turn off UUT and STD meter, take out of all components above.An anemometer is an instrument that measures wind speed. – Repeat above steps for remain test points. – Allow for stable reading, record value of UUT and STD meter. – Start generate velocity from Wind Tunnel, until STD meter reach the first test point. – Press zero button and measure button on UUT and STD meter, if needed. – Put UUT probe and standard anemometer probe in Wind Tunnel Chamber. Other test points within this range can be done follow customer’s requirement. – Perform test points at: 20, 40, 60, 80 and 100% UUT full range (Max 45m/s). – Turn all on, allow warm up at least 30 minutes or follow manufacturer’s instruction. – Visual inspection to determine compliance of the UUT with the requirements specified in the technical documentation for shape, dimensions, display, power used, markings, accessory and status check normal operation of the UUT. Outside this bound conditions will be considered with customer for uncertainty and measurement results. Note: environment conditions above apply for Techmaster inhouse laboratories. – Reference Anemometer: Kanomax Anemometer – Wind Tunnel OMEGA, Jet Stream 500 or other wind tunnel with range up to 45 m/s. Besides, the calibration also helps to detect equipment failures (if any) early for timely correction and repair.ģ.2 Calibration instrument – Anemometer Calibration ![]() As it will help ensure stability and accuracy for related operations. Therefore, calibration of this device is extremely necessary. The magnitude of the pressure differential is proportional to the airflow velocity.Īnemometer is an important measuring device that requires high accuracy. – Pitot tube: Basically a differential pressure (d/p) flow meter, a pitot tube measures two pressures: the static and the total impact pressure. Resistance of the wire measures the flow rate of the air. When placed in an air stream the heat is transferred from wire to the air and the temperature of wire reduces. ![]() – Hot wire probe: A Hot Wire Anemometer Probe is an instrument for measuring velocity and direction of fluid (in this case air) by measuring heat loss of an electrically-heated wire placed in the air stream. Wind speed is usually calculated on a vane anemometer by a rev counter on the wind turbine unit. You measure wind velocity by first facing your Vane Anemometer towards the source of the wind. ![]() ![]() – Vane probe: Is a type of wind meter that measures wind velocity and volumetric flow. Types of anemometersĬurrently, anemometers have a variety of models, but are usually popular with 3 types of probes as follows: Vane Probe, Hot wire probe, Pitot tube. In addition, anemometers are also used in other fields such as: HVAC system design & construction, clean room appraisal, biological safety cabinet appraisal, … 2. Anemometers are important tools for meteorologists, who study weather patterns. What is anemoter ?Īn anemometer is an instrument that measures wind speed and wind pressure. periodically to ensure the device is always operating stably. Calibration of anemometers is a job that needs to be done. Anemometer is a device widely used in the field of environmental monitoring, as well as applications related to clean rooms, biological safety cabinets, etc. ![]()
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