Unit UT70A Bedienungsanleitung
TABLE OF CONTENTS
TITLE PAGE
HIGHLIGHTS
NOTES FOR SAFE USAGE
FIGURATION AND ACCESSORIES
ELECTRIC SYMBOL
GENERAL INFORMATION
SPECIFICATIONS
1.DC Voltage (DCV)
2.AC Voltage (ACV)
3.DC Current (DCA)
4.AC Current (ACA)
5.Resistance
6.Capacitance
7. Inductance
8.Auto range frequency test
9.Transistor hFE measurement
10.Diode
11.Continuity Buzzer
12.TTL LOGIC Test
13.Temperature Test
OPERATION INSTRUCTION
1. Introduction of functional buttons
2. DC Voltage Measurement (DCV)
3.AC Voltage Measurement (ACV)
4. Current Measurement (DCA)
5.AC Current Measurement (ACA)
6. Resistance Measurement
7. Inductance Measurement (L)
8. Capacitance Measurement (C)
9. Frequency Measurement (10MHz)
10. Temperature Measurement (0C or 0F)
Model UT70A: OPERATING MANUAL
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TABLE OF CONTENTS
TITLE PAGE
11. Transistor Parameter
Measurement (hFE)
12. Diode (or PN node of transistor)
Measurement( )
13. Continuity Buzzer Test
14. TTL LOGIC Test
MAINTENANCE
FUSE AND BATTERY replacement
Accessories
Model UT70A: OPERATING MANUAL
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Operating Manual of UT70A Multimeter
HIGHLIGHTS
UT70A Multimeter is a hand-held digital multimeter with
advanced design, multiple functions, novel figuration,
large display screen and reliable performance. This meter
is fully capable to measure voltage and current both AC
and DC, resistance, capacitance, inductance, temperature,
frequency, forward voltage drop of diode, transistor hFE
and continuity test, TTL LOGIC level measurement. It
has some extraordinary functions such as holding the
measured data and maximum value, providing backlight
display in a dim condition, displaying polarity, over-range,
low battery, and units icons, and full overloading protection
and automatic power off.
NOTES FOR SAFE USAGE
1) CE Version: The Meter complies with the standards
IEC61010-1:in pollution degree 2, overvoltage category
CAT III 1000V, CAT IV 600V and double insulation .
UL Version: The Meter complies with the standards
UL61010B-1, in pollution degree 2, overvoltage
category CAT II 1000V and double insulation.
CATII: Local level, appliance, PORTABLE EQUIPMENT
etc., with smaller transient overvoltages than Installation
CategoryIII.
CATIII: Distribution level, fixed installation,with smaller
transient overvoltages than CAT IV.
CAT IV: Primary supply level, overhead lines,
cablesystems etc.
2) Make sure the insulation of the meter in good condition,
no damage and break before use.
3) Don’t use at all unless the back case is in place or
there is danger of electric shock.
4) Battery should be replaced to ensure an accurate
measurement when " " appears on LCD.
Model UT70A: OPERATING MANUAL
3
5) Set the Range Selector to a proper position.
6) The measured value shall not exceed the maximum
range of each measurement to protect the meter from
damage and electric shock to user.
7) Range Selector shall not be switched during
measurement to avoid damage to the meter.
8) Cautions shall be taken to prevent electric shock
when the measured voltage is higher than 60V in
DC or 42Vrms in AC.
9) Identical fuse shall be used when replacing the fuse:
5x20(mm) – F 0.5A 250V or 5X20(mm) –
F 10A 250V. 5X20(mm) – F 0.63A 250V.
10) Avoid using the meter in a high temperature and high
humidity condition, the performance may deteriorate
when the meter is dampened in a wet condition in
particular.
11) Please use test clips when measuring large size
inductor and capacitor to protect the multi-purpose
socket from damage.
12) This digital multimeter is a precise instrument and
its circuit and potentiometer shall not be altered at will.
13) Soft cloth and mild detergent may be applied to clean
the case for maintenance of this meter while no
abrasive or solvent shall be used.
14) Reset LC button, leaving LC circuit in Off mode, after
a LC measurement for comparatively large LC current.
Model UT70A: OPERATING MANUAL
4
Model UT70A: OPERATING MANUAL
1. Front case
2. Functional buttons
3. Function/Range selector
4. Input terminal
5. LCD window
FIGURATION AND ACCESSORIES
1) The Meter Structure(see figure1)
5
2) Input Terminal of UT70A
Input
Terminal Description For short
10A Input terminal for current
0.2A-10A. "A" Terminal
"mA"Terminal
Input terminal for voltage,
resistance, frequency,
diode, continuity, TTLLOGIC.
"V/ "
Terminal
COM Common terminal for current,
voltage, resistance, frequency,
diode, continuity,
TTLLOGIC measurement.
"COM"Terminal
3)Accessories
1 Multi-purpose socket: used for measurement of
transistor amplification, small capacitor, small inductor
and temperature of K type flat plug temperature probe
(not included).
2 Test clip: used for measurement of large size capacitor
and inductor.
3 K type cross plug point contact temperature probe:
input directly from V/ and mA terminal used for
temperature measurement.
Ω
6
Model UT70A: OPERATING MANUAL
Model UT70A: OPERATING MANUAL
ELECTRIC SYMBOL
AC (Alternating Current)
DC (Direct Current)
AC or DC
Grounding
Double Insulated
Deficiency of Built-In Battery
Continuity buzzer
Diode
Fuse
Warning. Refer to the Operating Manual
Conforms to Standards of European Union
7
GENERAL INFORMATION
l Maximum voltage between any terminal and the
ground: 1000V
l 3 1/2 digits large screen displaying size: 53 mm x 62 mm,
Max reading 1999.
l Simultaneous display function and unit icon.
l Automatic power off after 15 non-operated minutes
l Automatic polarity, over range "OL" and low battery
icon display.
l Power: one piece of 9V battery (6F22 or equivalent)
l Sampling rate: approx. 2.5/sec.
l Backlight: approx. 10 sec./time.
l Data hold
l Maximum value hold
l Dimensions: 195 x 90 x 40 mm, approx. 600 g.
(including holster)
l Full overloading protection.
l Operating temperature: 50C - 40 0C (41 0F - 104 0F),
humidity <80%@50C - 31 0C/<50%@310C-40 0C.
l Storage temperature: -100C - 50 0C (14 0F - 122 0F).
l Elevation: (operating) 2000 m, (storage) 10000 m.
This meter is suitable for indoor use.
Model UT70A: OPERATING MANUAL
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SPECIFICATIONS(2)
Range Resolution Accuracy Input protection
F. 0.5A/250V
F. 10A/250V
(0.8%+1)
(2%+5)
3.DC Current (DCA)
(1.5%+1)
Remarks:
4. AC Current (ACA)
Range Resolution Accuracy Input protection
F. 0.5A/250V
F. 10A/250V
(1%+3)
(3%+7)
(1.8%+3)
5. Resistance
Range Resolution Accuracy
(0.8%+3)
(0.8%+1)
(1%+5)
[5%(reading-10)+10]
.
Model UT70A: OPERATING MANUAL
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