Sper scientific 850069, Инструкция по эксплуатации

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12
MEASUREMENT PROCEDURES
Sound-Level Measurement
1. Ensure that the sound sensor at the top of the meter is
free from obstruction.
2. Hold the meter with the sound sensor pointing toward the
noise source and press POWER to turn the meter on.
3. Press
FUNCTION
continuously until the meter displays
the dB sound-level measuring unit.
4. The meter measures the sound level of the surrounding
noise and displays the value in decibels.
Light-Level Measurement
1. Press POWER to turn the meter on .
2. Press
FUNCTION
until the meter displays the Lux or Ft-cd
light-level measuring unit.
3. Press LUX/FT-CD to select between Lux and Ft-cd.
4. To ensure measurement accuracy, calibrate the light
meter using the Zero-Offset adjustment feature.
5. Cover the light sensor to block any light from registering
on the meter. Press
ZERO
to calibrate the meter to zero.
The meter displays the light-level value as 0 and is ready
to measure light, even in low-lit and dark areas.
6. Uncover the light sensor and ensure that the light sensor
on the front of the meter is pointing toward the lumination
subject and is free from obstruction.
7. The meter measures the light level of the surrounding
environment and displays the reading.