B&K Precision 309 - Manual - Manual (Page 4)

3.FEATURES
Ÿ Capable of measuring earth voltage.
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2mA measuring current permits earth resistance
tests without tripping earth leakage current
breakers in the circuit under test.
Battery operated.
Auto power off function. The timer operates auto-
matically about 3~6 minutes when the " PUSH
BUTTON SWITCH" and "TIMER ON BUTTON" are
pressed at the same time to keep the tester power
on.
Data hold function.
Small and light weight.
Designed to meet IEC-1010-1 (EN61010-1) CAT III
200V.
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2.SAFETY NOTES
Ÿ Read the following safety information carefully
before attempting to operate or service the meter.
Ÿ Use the meter only as specified in this manual.
otherwise, the protection provided by this meter
may be impaired.
Ÿ Rated environmental conditions
(1). Indoor Use.
(2). Installation Category III.
(3). Pollution Degree 2.
(4). Altitude up to 2000 meter.
(5). Relative humidity 80% max.
o
(6). Ambient temperature 0~40 C
Ÿ Observe the International Electrical Symbols listed
Below
Meter is protected throughout by double
insulation or reinforced insulation.
Warning ! Risk of electric shock.
Caution ! Refer to this manual before using the
Meter.
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