VOLTCRAFT 121416 User manual

1
Table of Contents
Title Page
Overview
Unpacking Inspection
Safety Information
Rules For Safe Operation
International Electrical Symbols
The Meter Structure
LCD Indicators
Rotary Switch
Functional Buttons
Measurement Operation
A. AC/DC Voltage Measurement
B. AC/DC Current Measurement
C. Resistance Measurement
D. Diodes Measurement
E. Continuity Measurement
F. Capacitance Measurement
G. Frequency Measurement
H. Built-in Power Deficiency Charge
General Specifications
Accuracy Specifications
A. DC Voltage
B. AC Voltage
C. DC Current
D. AC Current
E. Resistance
F. Capacitance Test
G. Frequency Test
H. Diodes Test
I. Continuity Test
Fuse Replacement
Maintenance

Model UT90C: OPERATING MANUAL
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Overview
This Operating Manual covers information on
safety and cautions. Please read the relevant
information carefully and observe all the
Warnings and Notes strictly.
Warning
To avoid electric shock or personal
injury, read the “Safety Information” and
“Rules for Safety Operation” carefully before
using the Meter.
The Model (hereafter referred to as “the
Meter”) is a 4000 counts environment protected
auto ranging electrical tester with and stabilize
functions, safety operations, and reliable
performance.
In addition to the conventional measuring
function, such as DC/AC voltage, resistance,
capacitance, frequency, diode, relative
measurement, Data Hold and continuity, it is
equipped with advanced design of charge
through 220V AC or 9-12V AC or DC or solar
energy. With such design and its recycled
package, the Meter can obtain energy without
battery, won’t result chemical pollution. This is
also a highly applied digital electrical tester of
good performance with big size full functions
symbols indication, full overload protection and
special appearance.
Unpacking Inspection
Open the package case and take out the Meter.

Model UT90C: OPERATING MANUAL
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Check the following items carefully to see any
missing or damaged part:
I
tem Description
Q
t
y
1
Operating Manual
1
piece
2
Test Lead
1
pair
3
certificate
1
piece
In the event you find any missing or damage,
please contact your dealer immediately.
Safety Information
This Meter complies with GB4793 standard for
safety electrical measuring and test equipment,
and IEC61010-1: in pollution degree 2,
overvoltage category (CAT II 1000V, CAT III
600V) and double insulation.
Use the Meter only as specified in this operating
manual, otherwise the protection provided by the
Meter may be impaired.
In this manual, a Warning identifies conditions
and actions that pose hazards to the user, or
may damage the Meter or the equipment under
test.
A Note identifies the information that user should
pay attention on.
International electrical symbols used on the
Meter and in this Operating Manual are
explained on page XXX.

Model UT90C: OPERATING MANUAL
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Rules For Safe Operation
Warning
To avoid possible electric shock or personal
injury, and to avoid possible damage to the
Meter or to the equipment under test, adhere
to the following rules:
zBefore using the Meter inspect the
case. Do not use the Meter if it is
damaged or the case (or part of the
case) is removed. Look for cracks or
missing plastic. Pay attention to the
insulation around the connectors.
zInspect the test leads for damaged
insulation or exposed metal. Check the
test leads for continuity. Replace
damaged test leads with identical
model number or electrical
specifications before using the Meter.
zWhen using the test leads, keep your
fingers behind the finger guards.
zDo not apply more than the rated
voltage, as marked on the Meter,
between the terminals or between any
terminal and grounding.
zWhen the Meter working at an effective
voltage over 60V in DC or 30V in AC,
special care should be taken from there
is danger of electric shock.
zUse the proper terminals, function, and
range for your measurements.
zThe rotary switch should be placed in
the right position and no any
changeover of range shall be made
during measurement is conducted to

Model UT90C: OPERATING MANUAL
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prevent damage of the Meter.
zDisconnect circuit power and discharge
all high-voltage capacitors before
testing resistance, diodes or continuity.
zCharge as soon as the Meter indicator
appears to keep precision of the
readings.
zRemove test leads from the test circuit
before changeover of range. Turn the
Meter power off before connect the
Meter to circuit and check the fuse
before measuring current.
zWhen servicing the Meter, use only the
same model number or identical
electrical specifications replacement
parts.
zThe internal circuit of the Meter shall not
be altered will to avoid damage of the
Meter and any accident.
zSoft cloth and mild detergent should be
used to clean the surface of the Meter
when servicing. No abrasive and solvent
should be used to prevent the surface of
the Meter from corrosion, damage and
accident.
zTurn off the Meter when it is not in use
for a long time.
zDo not use or store the Meter in an
environment of high temperature,
humidity, explosive, inflammable and
strong magnetic field. The performance
of the Meter may deteriorate after
dampened.

Model UT90C: OPERATING MANUAL
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International Electrical Symbols
AC (Alternating Current).
DC (Direct Current).
Grounding.
Double Insulated.
Deficiency of Built-In Battery.
Warning. Refer to the Operating
Manual.
China Technology Supervision
Bureau, license for measuring
instrument Manufacture
Conforms to Standards of European
Union.
The Meter Structure (see figure 1)
 LCD Display.
 solar receiver.
 SELECT Button.
 Rotary Switch.
 HOLD Button.
 Input Terminals.
 RESET Button
LCD indicators(see figure 2)
 AC Appear at AC measurement, disappear
at DC measurement.
 Display the minus readings.
CHARGE Charge indicator.
 AUTO Choose the best resolve power range
in the auto ranging mode.
 □H Data Hold mode.

Model UT90C: OPERATING MANUAL
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 Relative Measurement mode
Battery Deficiency indicator.
 V Charge Voltage Unit: volt.
 & Continuity Measurement indicator.
Diodes Measurement indicator.

Ω,KΩ,MΩResistance unit
nF,µF Capacitance unit
Hz, kHz, MHz Frequency unit
MV, V Voltage unit
µA, mA, A Current unit
Rotary Switch
Below table indicated for information about the
rotary switch positions.
Rotar
y
Switch
Positio
n
Function
DC voltage measurement range
from 400.0mV to 1000V; AC
voltage measurement range from
4.000V to 750V.
ΩΩResistance measurement range
from 400.0Ωto 40.00MΩ.
Diode test.
Capacitance test.
&Continuity test.
Hz Frequency measurement range
from 10.00Hz to 10.00MHz.

Model UT90C: OPERATING MANUAL
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µ
A
m
A
A
AC/DC current measurement
range from 400.0µA to 20.00A.
CHARGE
Charge: 230V MAX: AC
220V input charge
9-12 : 9-12 input charge
OFF Turn off the Meter.
Functional Buttons
Below table indicated for information about the
functional button operations.
Button
Measur
ing
Functi
Operation Performed

Model UT90C: OPERATING MANUAL
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Any
rotary
switch
position
except
at Hz,
CHAR
GE
Relative Measurement:
Press Button, make
the Meter take the
present reading as the
basic value, and the
reading on the display
goes to “0”. Every
measured value
hereafter will subtract the
basic value.
Press the button again to
exit and back to the
former range position. To
enter Autorange, turn the
rotary switch from the
beginning to the end and
back to the beginning
one time.(only fit the
Autorange function)
RESET
BUTTON
CHAR
GE
Reversion Button: When
the built-in power is
deficiency, the display
will shut off. At the first
time to start up the LCD
during charge, it is
necessary to use
button to make the Meter
display the exact present
char
g
e volta
g
e.
SELEC
T
BUTTO
N
Any
rotary
switch
position
When there are two or
above two same color
measure functions at the
same rotary switch
position, press the
SELECT BUTTON to
choose the needed one

Model UT90C: OPERATING MANUAL
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□H
DATA
HOLD
Any
rotary
switch
position
Press the button to hold
the present value, press
again to exit; Show the
value follow the
measurement.
&
BEEPS
Any
rotary
switch
position
When start up ,
SELECT,□H operations,
the buzzer beeps one
time; When the result of
continuity test is
connected, the buzzer
beeps
co
n
t
in
uous
l
y
.
AUTO
POWE
R-OFF
Any
rotary
switch
position
When there is not any
operation of the Meter, all
the indicators on the LCD
will disappear, the Meter
will enter sleep mode.
Any operation of rotary
changover or pressing
button will wake up the
Meter to work again.
When press SELECT
BUTTON to start up the
Meter, the function of
AUTO POWER-OFF will
be canceled.
Measurement Operation
A. AC/DC Voltage Measurement (see figure
3)
Warning