HAGNER DIGITAL LUX METER EC1
The Hagner Digital Lux Meter is a small, handy and extremely easy-to-use instrument for accurate
measurement of illuminance over a range of 0.1-200,000 lux. With both automatic zeroing and
on/off switch, the only controls needed are a four-position range selection switch and a hold button
for retaining the display value.
Specification
Detector : Sillicon photodiode Vλ-filtered and cosine corrected
Measuring Range : 0.1 – 200,000 lux
Accuracy : Better than ±3% (±1 in last digit)
Temperature drift : <10°C +0.35% / °C ; >30°C -0.35% / °C
Power Supply : 9 volt battery type PP3 alkaline (lifetime approx. 350 hrs)
Dimension : 135 x 75 x 35 mm
Weight : 0.19 Kg (EC1-X 0.48 Kg with carrying case)
Part No
1) Hagner Digital Lux Meter Model EC1
Operation
To open the lid, press the forward part lightly downward with your thumb and at the same time pull
the latch upwards with the first two fingers of the same hand. The lux meter comes on when the
cover is opened and turns off when it is closed. Move the range switch to the range which will give
the greatest accuracy and read the display. The hold function keeps the reading on the display until
the hold button is released. Full instructions can be found on the inside of the cover.
Maintenance
The power source is a standard 9 volt battery. To avoid battery leakage only alkaline batteries should
be used. When LOBAT appears on the display, it is time to replace the battery. However, the lux
meter can be used for approximately 20 hours longer before replacing is necessary.
Change the battery by removing the screw at the front edge of the cover plate, which permits the
plate to be lifted up and removed. When replacing it the lower edge of the plate must fit under the
two bosses at the lower edge of the case before it can be closed again. The white plastic disc over
the detector may be cleaned when necessary with a light damp cloth.
Calibration
The lux meter is carefully calibrated when delivered. As the light sensitive silicon diodes are
extremely stable over long periods of time recalibration every two-three years should, under normal
use of the instrument, be sufficient. If however there is any reason to belive that the instrument is
out of calibration, it can be returned to your stockist or the manufacturer for earlier control checks.
Hagner Digital Lux Meter EC1 datasheet
