3nh HG Series Manual de operação - Página 7

Procurar online ou descarregar pdf Manual de operação para Instrumentos de medição 3nh HG Series. 3nh HG Series 10 páginas. Gloss meter

power-off is manually, it will calibrate automatically when turn on next time. If

the last power-off is automatic after 5 minutes backlight off, then it will not

calibrate automatically when turn on next time.

When operating environment change (such as the rapid change of

temperature, altitude and humidity), it must do calibration. In order to ensure

the accuracy, please use the original standard plate for calibration. The dust on

the standard plate will affect calibration accuracy. Please clean the standard

plate and ensure it's clean when calibrating.

The Standard plate is a precise optical component. Please avoid it from strong

sunlight. Due to environment factors, the gloss value of standard plate will

change over time. Therefore, it's better to send it back to the factory or

qualified local National Institute of Metrology for the calibration. (Once a year)

Attention:

a) Each instrument has the only calibration plate. If use other calibration plate

to pass the calibration, the measurement is also not accurate. Therefore,

before calibrating, please check whether the serial number of the

instrument is the same with that on the calibration plate.

b) Before calibrating, please make sure the instrument and calibration plate is

tightened. Otherwise, the calibration maybe failed and the measurement

results may not accurate.

Change Calibration Values

Users can change instrument calibration value through QC software.

Attention: Modify calibration value is better operated by manufacturer or

qualified metrological institutes. The calibration value needs to be modified

only when it is different from the actual calibration plate value. Before

modifying the standard value, please backup the original standard value.

2.3 Measurement

The measuring mode is basic mode (Figure 4).

Basic mode is a basic sample test mode which will display the glossiness

value directly. It belongs to single measurement. The results will be saved

automatically each time (except for certain models). It can display multiple sets

of test data simultaneously.