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anode and place the black test lead on the component's
cathode.
The measured value shows on the display.
The open-circuit voltage is around 3V.
When diode testing has been completed, disconnect
the connection between the testing leads and the
circuit under test.
(See Figure 7)
black
red
(Figure 7)
Warning
To avoid harms to you, please do not attempt to input
voltages higher than 60V DC or 30V rms AC.
To avoid damages to the Meter or to the devices under
test, disconnect circuit power and discharge all the
high-voltage capacitors before testing for continuity.
To test for continuity, connect the Meter as below:
1. Insert the red test lead into Hz VΩ
(UT58C) or
VΩ
(UT58A/UT58B) terminal and the black test
lead into the COM terminal.
2. Set the rotary switch to
.
3. Connect the test leads across with the object being
measured.
4. The buzzer does not sound if the resistance of a
circuit under test is >70Ω
The buzzer sounds continuously if the circuit is in
good condition with resistance value 10Ω.
The measured value shows on the display and the
unit is Ω.
F. Measuring Capacitance (See Figure 8)
F
capacitance
G. Measuring Temperature
(See Figure 9)
(Figure 9)
for
(See Figure 8)
I. Measuring Frequency (UT58C Only)
(See Figure 9)
POWER
General Specifications
Maximum Voltage or Current between input Terminals
and Grounding: According to different functional input
protection value.
Fused Protection for
uA mA Input Terminals:
CE Version: 0.5A, 250V fast
type,
5x20mm.
Maximum Display
: 1999,updates 2~3 times/
second.
Range
: Manual ranging.
Polarity display
: Automatically
Overloading
: Display "1".
Low Battery Indication
: Display "
".
o
o
o
o
Temperature:
Operating: 0
C~40
C (32
F~104
F);
o
o
o
Storage : -10
C~50
C(14
F~122
0
0
Relative Humidity
:
75%@0
C~30
C;
0
0
50%@30
C~40
C
Electromagnetic
Compatibility
: In a radio field of 1 V/m,
Overall Accuracy = Specified
Accuracy + 5% of Range;
in a radio field of more than
1 V/m, no assigned accuracy
is specified.
Battery Type
: One piece of 9V (NEDA1604
or 6F22 or 006P).
Dimensions
: 179x88x39mm.
Weight
: Approx.380g (including
holster and battery)
Safety/Compliances : IEC61010 CAT II 1000V,
CATIII 600V overvoltage
and double insulation standard.
Certificate:
Accuracy Specifications
Accuracy: (a% reading + b digits),guarantee for 1 year.
o
o
Operating temperature:18
C~28
C.
Relative humidity:
75%RH.
A. DC Voltage
Overload
Accuracy
Range Resolution
Protection
250VAC
0.1mV
200mV
2V
1mV
(0.5%+1)
20V
10mV
1000V AC
200V
100mV
1000V
1V
(0.8%+2)
Remarks:Input Impedance: approx.10MΩ.
B. AC Voltage
Overload
Accuracy
Range Resolution
Protection
1mV
2V
(0.8%+3)
20V
10mV
200V
100mV
750V
1V
(1.2%+3)
Remarks:
Input Impedance: approx.10MΩ.
Frequency response:
40Hz~1kHz< 500V;
40Hz~400Hz > 500V
The
500Hz reading is for reference
Display sinewave RMS value(AVG response)
C. DC Current
Model
Range Resolution
Accuracy
20μA
0.01μA
UT58A
Fuse 0.5A, 250V,
(0.8%+1)
2mA
1μA
UT58ABC
20mA
10μA
UT58AB
(1.5%+1)
200mA
0.1mA
UT58ABC
20A
10mA
(2%+5)
Un-Fused
UT58ABC
Remarks:
At 20A Range:
For continuous measurement 10 seconds and
interval time between 2 measurement greater than
15 minutes.
D. AC Current
Accuracy
Range Resolution
(1.0%+3)
1μA
2mA
Fuse 0.5A, 250V,
0.1mA
200mA
(1.8%+3)
(3.0%+5)
Un-Fused
10mA
20A
Remarks:
Frequency reaponse: 40Hz~400Hz
At 20A Range:
For continuous measurement
10 seconds and
interval time between 2 measurement greater than
15 minutes
UT58ABC
UT58ABC
UT58ABC
UT58ABC
UT58ABC
UT58AB
H. Capacitance
Accuracy
Range Resolution
2nF
1pF
(4.0%+3)
200nF
0.1nF
o
F)
±(5.0%+4)
100μF
0.1μF
When it is 40μF: the obtained
reading is only for reference
Accuracy
Range Resolution
J. Transistor
Range Resolution Accuracy±(a% reading + b digits)
hFE
1β
Vce 3V Ibo 10μA 1000βMAX
K. Frequency ( UT58C only)
Accuracy
Range Resolution
1000V AC
2kHz
1Hz
±(1.5%+5)
20kHz
10Hz
Maintenance
This section provides basic maintenance information
including battery and fuse replacement instruction.
Warning
Do not attempt to repair or service your Meter unless
you are qualified to do so and have the relevant
Overload
calibration, performance test, and service information.
Protection
To avoid electrical shock or damage to the Meter, do
not get water inside the case.
fast type,
A. General Service
5x20mm
Periodically wipe the case with damp cloth and mild
detergent. Do not use chemical solvent.
To clean the terminals with cotton bar with detergent,
as dirt or moisture in the terminals can affect readings.
Turn the Meter off when it is not in use and take out
the battery when not using for a long time.
Do not store the Meter in place of humidity, high
temperature, explosive, inflammable and strong
magnetic field
B. Replacing the Fuse (See Figure 10)
Overload
Protection
fast type,
5x20mm
( Figure 10)
Warning
To avoid electrical shock or arc blast, or personal
injury or damage to the Meter, use specified fuses
ONLY in accordance with the following procedure.
To replace the Meter's fuse:
1. Turn the Meter off and remove all connections from
the terminals.
2. Remove the holster from the Meter.
3. Remove the 3 screws from the case bottom, and
separate the case top from the case bottom.
4. Remove the fuse by gently prying one end loose,
then take out the fuse from its bracket.
5. Install ONLY replacement fuses with the identical type
and specification and make sure the fuse is fixed
firmly in the bracket.
Fuse: 0.5A, 250V, fast type,φ5x20mm
6. Rejoin the case bottom and case top, and reinstall
the 3 screws and holster.
Replacement of the fuses is seldom required. Burning
of a fuse always results from improper operation.
C.Replacing the Battery
(See Figure 10)
Warning
To avoid false readings, which could lead to possible
electric shock or personal injury, replace the battery
as soon as the battery indicator "
To replace the Meter's battery:
1. Turn the Meter power off and remove all connections
from the terminals.
2. Remove the holster from the Meter.
3. Remove the 3 screws from the case bottom, and
separate the case top from the case bottom.
4. Remove the battery from the battery connector.
5. Replace with a new 9V battery (NEDA1604, 6F22
or 006P).
6. Rejoin the case bottom and case top, and reinstall
the 3 screws and the holster.
** END **
This operating manual is subject to change without notice.
Copyright 2001 Uni-Trend Group Limited.
All rights reserved.
7
the
Overload
Protection
250V AC
" appears.
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