Unit UT30B Manual de usuario
CONTENTS
A. Introduction
B. Safety Rules
C. International Electrical Symbols
D. Feature
E. Specification
F. Operation Plate
G. Make Measurement
H. Fuse and battery replacement
I. Accessories
Remark:
The model of UT30B,UT30C,UT30D will be marked as UT30BL,UT30CL
UT30DL,if they have backlight function.
1
Model UT30B/C/D/F: OPERATING MANUAL
Summary of UT30 Series DMM
A.Introduction
UT30 series Multimeter is 3 1/2 digits with steady operations,fashionable
structure and highly reliable hand-held measuring instrument. The meter
can measure DC/AC voltage, DC/AC current, Resistance, Frequency,
Temperature, Diode, Transistor hFE, and Continuity. It is an ideal tool for
maintenance.
2
Model UT30B/C/D/F: OPERATING MANUAL
B. Safety Rules(1)
CAUTION-FOR CONTINUED PROTECTION AGAINST FIRE, REPLACE
ONLY WITH FUSE OF THE SPECIFIED VOLTAGE AND CURRENT
RATINGS.
l Do not operate the meter unless the bottom case has been closed as
terminal can carry voltage.
l Inspect the insulation of the test leads and make sure there is no
damage to the test leads before using the meter.
l As soon as the battery indicator’s” “±appear, replace the battery to
ensure accurate readings.
l Set the meter to suitable function and range before each measurement.
l Tested values over the maximum range of each measurement can
cause damages to the meter or electric shock to users.
l To avoid damages of the meter, do not turn the rotary switch during
measurement.
l When measuring voltage higher than DC 60V or AC 30Vrms, pay
extra attention to avoid electric shock.
3
Model UT30B/C/D/F: OPERATING MANUAL
l Make sure to replace right type and right rating fuse.
l Do not operate or store the Meter under high temperature or humid
condition.
l Do not change internal circuit to avoid damages to the meter and
danger to the user.
l Periodically wipe the case with damp cloth and mild detergent. Do not
use abrasives and solvents.
l The meter is designed to withstand the stated maximum voltages.
If it’s not possible to exclude, without doubts, that impulses, transients,
disturbance or for other reasons these voltages are exceeded, a
suitable prescaler (1:10) must be used.
B. Safety Rules(2)
4
Model UT30B/C/D/F: OPERATING MANUAL
C. International Electrical Symbols
Low Battery Earth Ground
Warning Double Insulation
AC current Diode
DC current Buzzer
Fuse AC or DC
5
Model UT30B/C/D/F: OPERATING MANUAL
D.General Specifications(1)
1. The maximum voltage, between any terminal and earth, is 600Vrms.
A . The“COM”input terminal is always connected with the black test
lead.
B . The“V,ohm, mA”input terminal is always connected with the red
test lead and is used to measure voltage up to 500V,resistance
and current up to 200mA.
C . The“10A MAX”input terminal is always connected with the red test
lead and is used to measure current greater than 200mA but no
more than 10A.
2. 10A Terminal: non-fused
3. mA Terminal Fuse: ø5x20-0.3A 250V.(Fast)
4. Maximum Display is 1999,and updates two or three times every second.
5. Over range display is “1” or “OL”. (Only UT30F).
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Model UT30B/C/D/F: OPERATING MANUAL
D.General Specifications(2)
6. Temperature:
Operating: 0oC-40oC (32 oF-104 oF)
Storing:-10oC-50oC (14 oF-122 oF)
7. Altitude:
Operating:2000m
Storage:10000m
8 Relative humidity:Max.relative humidity 80% for temperature up to
31oC decreasing linearly to 50% relative humidity at 40oC.
9. Battery: 9V NEDA 1604 or 6F22 or 006P.
10. Low Battery Indication: Display “ ”.on LCD.
11. Dimension:75mmx130mmx36mm
12. Weight: approx. 150g(Test Leads not included)
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Model UT30B/C/D/F: OPERATING MANUAL
E.Specification(1)
Accuracy: (a% reading + b digit), which guarantee one year.
Environmental Temperature:23 oC 5oC
Relative Humidity: <75%
Input Impedance:10MΩfor all the ranges.
Overload protection: At 200mV range, it’s protected at 230V(AC / DC
Current), others are protected at 500V(AC or DC).
Range Resolution Accuracy
200mV
2000mV(2V)
20V
200V
500V
100µV
1mV
10mV
100mV
1V
UT30B UT30C UT30D UT30F
(0.5%+2)
(0.8%+2)
1. DC Voltage
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Model UT30B/C/D/F: OPERATING MANUAL
E.Specification(2)
2. AC Voltage
Input Impedance: (approx. 5MΩ) of UT30B\C\D, but all ranges of
UT30F are 10MΩ.
Frequency: 40-400Hz
Display: RMS of Sine Wave Value (Average Value)
Overload protection: At 200mV range, it is protected at 230V(AC / DC
Current), others are protected at 500V(AC or DC )
Range Resolution Accuracy
200mV
2V
20V
200V
500V
100µV
1mV
10mV
100mV
1V
UT30B UT30C UT30D UT30F
(1.2%+10)
(1.2%+3)
(1.2%+3)
(1%+3)
9
Model UT30B/C/D/F: OPERATING MANUAL
E.Specification(3)
Range Resolution Accuracy
200µA
2000µA(2mA)
20mA
200mA
10A
100nA
1µA
10µA
100µA
10mA
UT30B UT30C UT30D UT30F
(1.2%+2)
(2%+5)
(1%+2)
Overload Protection: 0.3A/250V fuse, No fuse at 10A,measuring time
limit is equal to or less than 10 seconds, and time interval should be equal
to or over 15 minutes.
Measuring voltage drop: Full range is 200m V.
3. DC Current
10
Model UT30B/C/D/F: OPERATING MANUAL
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