How often do you need to calibrate a light meter?
Periodically based on quality records. This could be monthly, quarterly, bi-annually, annually or every 2-3 years. Keeping good records of the quality of your system can calibration call allow you to create the best cycle.
Do lux meters need to be calibrated?
As for any electronic measurement device, a luxmeter needs to be calibrated against a known reference to ensure it is reading accurately. The meter is adjusted at the factory to read true.
In what units should an illuminance meter be calibrated?
Lux is the unit of measurement of brightness, or more accurately illuminance. According to Huygens principle, light from any point source is propagated in forward direction in the form of spherical wavelets.
How do you calibrate a light meter?
How often is calibration necessary?
Calibrating often at shorter intervals will afford you with better specifications. Depending on how often you use them, you may need to calibrate monthly, quarterly or semi-annually. One way to achieve this is to use a circuit with known readings, a proprietary calibration card or checkbox.
How often should calibration be done?
Monthly, quarterly, or semi-annually – If you do critical measurements often then a shorter time span between calibrations will mean there is less chance of questionable test results. Often calibrating at shorter intervals will afford you with better specifications.
Do all meters require calibration?
All meters are calibrated at the factory to ensure they comply with published accuracy specifications.
Do you need to calibrate a laser measure?
Accuracy is essential when using lasers and optical levellers, as measurement errors can affect work quality. External influences such as impacts, contamination or temperature variations can affect your measuring tool’s performance.
What are acceptable lux levels?
Key principles in lighting A process control room should be lit at an illuminance of 300 lux, a corridor or walkway may only require 50 lux, whilst studying an engineering drawing may require 750 lux (see HSG38 Lighting at Work).
Which conditions are required for calibration?
Calibration requirements include the need to… Establish and maintain documented procedures. Determine measurements to be made and accuracy required. Select an appropriate measurement instrument capable of measurement accuracy and precision. Identify and define measurement instrument for calibration.
