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Battery Installation / Check
To prepare the equipment for use a heavy duty alkaline battery type 6LR61
should be fitted, such as a Procell/Duracell MN1604, Ever Ready 6LF22
Gold Seal, or equivalent.
The battery door is located on the bottom left hand side of the instrument.
Open the battery door cover by sliding the cover downward towards the
bottom of the instrument. The cover will now swing open exposing the
battery compartment. Insert the battery observing the correct polarity as
marked on the case wall.
Close the battery compartment door by reversing the procedure above. The
instrument is now ready for calibration and use.
The battery condition is shown on the LCD during the power-on sequence, but
can also be checked at any time by pressing the ‘
i'
key. Pressing the key once
will display the battery status screen, with the battery condition indicated by a
series of vertical bars – 4 bars shows a fully charged battery, while1 bar
shows one that is almost flat. It is recommended that the battery should be
replaced if only 1 bar is displayed. The screen will flash BAT. LOW when the
battery level drops below a sustainable level whilst the instrument is in use. If
this happens, replace the battery.
Microphone
The microphone capsule fitted to your instrument is a high quality class 1
instrumentation grade 1/2 inch capsule.
The GA113 can be fitted with an optional dosemeter microphone assembly
(MK279DP1B) in order that it can be attached to the collar of a noise
exposed worker. Please note that the MK279DP1B assembly is only to be
used when using the instrument as a dosemeter. It is not designed to be used
for taking sound meter readings to Class 1 accuracy.
Measurement microphones by the very nature of their manufacture are
precision components that are easily damaged through incorrect use. Great
care must be taken when using the instrument to ensure the longevity of the
microphone.
PLEASE NOTE THAT THE INSTRUMENT IS NORMALLY SUPPLIED WITH A
PROTECTIVE WHITE PLASTIC CAP COVERING THE END OF THE
MICROPHONE WHEN DELIVERED. THIS CAP MUST BE REMOVED PRIOR TO
USING THE INSTRUMENT.
