E N G L I S H
26
solvents.
Clean the input terminals as follows:
1. Turn the meter off and remove all test
leads.
2. Shake out any dirt at the terminals.
3. Soak a new swab with alcohol and work
the swab around in each terminal.
If the meter will not be used for periods of
longer than 60 days, remove the battery and
store it separately.
Battery and Fuse Replacement
The meter uses a single standard 9V battery
(NEDA 1604, JIS006P, IEC 6F 22), a 1000
V/440 mA IR 10 kA fast acting F fuse (F71)
for mAμA current input, and a 1000 V/11 A
IR 10KA fast acting F fuse (F72) for A current
input.
The (F71) 440 mA, (F72) 11 A fuse must be
replaced by qualified service personnel only.
Trouble Shooting
If the meter fails to operate even with the
battery or fuse replacements, check it twice
over according to operating procedure as
described in this manual.
If the meter’s V/W input terminal has
subjected to high transient voltage (caused
by lightning or switching surge to the
system) by accident or abnormal operating
conditions, the series fusible resistors will be
blown off like fuses in order to protect the
user and the meter.
Most measuring functions through this
terminal will then be in open circuit.
In this case, the series fusible resistors
and the spark gaps should be replaced by
qualified personnel.
Refer to the LIMITED WARRANTY &
LIMITATION OF LIABILITY section for
obtaining warranty.
7. SPECIFICATIONS
Safety & Compliances
Maximum voltage between any terminal
and ground: 1000 V AC/DC
Compliances: Complies with CSA C22.2 No
1010.1-92, ANSI/ISA-S82, 01-94 to 1000 V
Overvoltage Category lll.
Certifications:
UL & cUL standard UL 3111-1 Listed CE-
marking certificated.
Surge Protection: 8 KV peak per IEC 1010.1-92.
Fuse Protection for mA or μA inputs:
1000 V / 440 mA lR 10 kA FAST fuse.
Fuse Protection for A input:
1000 V / 11 A lR 10 kA FAST fuse.
Physical Specifications
Display (LCD):
Digital – 4000 counts display; updates 5
times/sec.
Operating Temperature: 0°C to 40°C.
Storage Temperature: –20°C to 60°C.
Temperature Coefficient:
Nominal 0.15 x (specified accuracy) / °C @
(0°C to 18°C or 28°C to 40°C), or otherwise
specified.
Relative Humidity:
0 % to 80 % @ (0°C to 35°C) – 0 % to 70 %
@ (35°C to 40°C).
Altitude:
Operating – up to 2000m Storage – 10000m.
Battery Type:
Single 9V battery –NEDA 1604, JIS 006P or
IEC 6F 22 .
Battery Life:
250 hrs. typical (with backlight off) [UD179]
750 hrs. typical (with backlight off) [UD112].
Shock Vibration:
Per MIL-T-PRF 28800 for Class II instruments.
Pollution Degree: 2.
Summary of Contents for UD112
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