STANDARD OPERATING PROCEDURE – LUX LEVEL MEASUREMENT

 OBJECTIVE:

To establish a procedure for Lux level measurement activity.

 

POLICY:

Measurement for Lux level by using digital lux meter accurately by following standard procedure.

 

RESPONSIBILITY:

 

Shift Engineer

 

PROCEDURE:

 

OPERATION:

 

·        Press the Θ button to turn power on or off.

·        Remove sensor cap and place the sensor perpendicular to the light.

·        Select Illuminance scale and range for reading.

·        When done testing, replace the sensor cover to protect the filter and sensor.

 

Lx / Fc

 

Illuminance scales. 1 foot-candle = 10.764 Lux and 1 lux = 0.09290 foot-candles.

 

Data Hold

 

Freezes the reading present on the LCD at the moment the button is pressed.

Press HOLD again to disable Data Hold.

 

AUTO / MAN Ranging

 

Press the AUTO or Manual ranging button for useable reading. AUTO ranging is the default operation.

 

 

MIN/MAX

 

Pressing the MIN/MAX button for less than 1 second will put the meter into a

mode of displaying the maximum, minimum, or actual readings. Each time the

MIN/MAX button is pressed, the meter will cycle from MAX ► MIN ◄ off.

Select the proper measurement range before enabling the MIN/MAX feature.

 

Auto-Power Off

 

In order to save battery life, your light meter powers down automatically after

approximately 6 minutes of inactivity. You can turn it back on by pressing the Θ

button. You can disable Auto Power Off by pressing and holding the HOLD button

while turning the meter ON.

 

Zero

The light sensor will change the null point over time. To reset the null point, cover

the sensor, press the ZERO button. The display will show “ADJ”. When the null

reset is done, the display will read ‘00.0’.

 

REVISION GUIDE:

Any change in the systems will need a change in the SOP.