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

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

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

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

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)

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

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

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

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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