UNI-T UT52 - User Manual

Introduction
Digital Multimeter UT50 series (hereafter
referred to as "the Meter") are 2000-count
hand-held instruments featuring stable
performance, versatile functions, high degree
of reliability&accuracy. They are designed
with large-scale integrated circuits, dual
integral A/D converter as well as overloaded
protection. The series can measure AC/DC
voltage, AC/DC current, resistance,
capacitance, frequency, temperature, diode
and continuity, making the series a perfect
tool for users.
Your Meter's Features
z 32 ranges.
z Liquid Crystal Display, digits height is 27mm.
z Overload display l.
z Maximum display 1999 (3 1/2 digit).
z Full range overload protection.
z Auto-Power Off (For UT53, UT54 and UT55
ONLY).
z Temperature:
Operating:0
o
C to 40
o
C (32
0
F to 104
0
F).
Storing:-10
o
C to 50
o
C (14
0
F to 122
0
F ).
z Altitude:
Operating: 2000m
Storing: 10000m.
z Relative Humidity:Max. relative humidity
80% for temperature up to 31
o
C decreasing
linearly to 50% relative humidity at 40
o
C.
z Low Battery display "" .
z Strap for easy carry.
z Tilt stand design, three observation angles,
is in favor of reading display.
z Dimension: 190mm x 88mm x 34mm.
z Weight: Meter only(excluding test leads)
about 270g .Meter + holster + tilt stand
about 550g.
z Battery Type: 9V NEDA 1604 or 6F22 or 006P
Specifications
Accuracy is specified for one year after calibration,
at operating temperatures 23
o
C +/- 5
o
C, with relative
humidity at < 75%.Accuracy specifications take
the form of:+/- (a% readings +digits )
Direct Current Voltage (DC Voltage)
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Overload protection: 250VDC or AC RMS for
200mV range. 750VRMS or 1000Vp-p for other
ranges.
Alternating Current Voltage (AC Voltage)
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Frequency: 40Hz-400Hz .
Overload protection: 250VDC or AC RMS for
200mV range. 750VRMS or 1000Vp-p for other
ranges.
Display: Average Value (RMS of Sine Wave).
200mV
2V
20V
200V
1000V
100μV
1mV
10mV
100mV
1V
Range Resolution
(0.5% +1)
UT51 UT 52 UT53 UT54 UT55
Accuracy
(0.8% +2)
200mV
2V
20V
200V
750V
100μV
1mV
10mV
100mV
1V
Range Resolution
UT51 UT 52 UT53 UT54 UT55
Accuracy
(1.2% +3)
(0.8% +3)
(1.2% +3)
Direct Current Current (DC Current)
20μA
200
μA
2mA
20mA
200mA
2A
10A
20A
0.01
μA
0.1
μA
1
μA
10
μA
100
μA
1mA
Range Resolution
UT51 UT 52 UT53 UT54 UT55
Accuracy
(2%+5)
(0.8%+1)
(1.5%+1 )
(0.8%+1)
10mA
(1.5%+1)
(2%+5)
(2%+5 )
Overload protection:
For UT51:
2A, 250V fast acting fuse, φ5x20mm(below
2A range)
10A, 250V fast acting fuse,φ5x20mm(at 10A
range) .
For UT52/53/54/55:
315mA, 250V fast acting fuse, φ5x20mm (No
fuse at 20A range).
Max current input :
For UT51: 10A (The measurement time for high
current should be less than 10 seconds, and
the interval time between two measurements
should be greater than 15 minutes.
For UT52/53/54/55: 20A (The measurement
time for high current should be less than 15
seconds, and the interval time between two
measurements should be greater than 15
minutes.
Alternating Current Current (AC Current)
200μA
2mA
20mA
200mA
2A
10A
20A
0.1
μA
1
μA
10
μA
100
μA
1mA
Range
Resolution
UT51 UT 52 UT53 UT54 UT55
Accuracy
(1%+3)
(1%+3)
10mA
(1.8%+3)
(3%+7)
(3%+7 )
(1.8%+3)
(1.8%+3)
Overload protection:
For UT51:
2A, 250V fast acting fuse, φ5x20mm(below 2A
range)
10A, 250V fast acting fuse,φ5x20mm(at 10A range) .
For UT52/53/54/55:
315mA, 250V fast acting fuse,φ5x20mm (No fuse
at 20A range).
Max current input :
For UT51: 10A (The measurement time for high
current should be less than 10 seconds, and the
interval time between two measurements should be
greater than 15 minutes.
For UT52/53/54/55: 20A (The measurement time
for high current should be less than 15 seconds, and
the interval time between two measurements should
be greater than 15 minutes.
Measuring voltage drop:
200mV for full ranges.
Display: Average Value (RMS of Sine Wave ) .
Capacitance
Testing signal: around 400Hz 40mVrms
Range Resolution
UT51 UT 52 UT53 UT54 UT55
Accuracy
(4% +3)
2nF
20nF
200nF
2
μF
20
μF
1pF
10pF
100pF
1nF
10nF
Resistance
200Ω
2KΩ
20KΩ
200KΩ
2MΩ
20MΩ
200MΩ
0.1Ω
1Ω
10Ω
100Ω
1KΩ
10KΩ
100KΩ
Range Resolution
UT51 UT 52 UT53 UT54 UT55
Accuracy
(0.8% +1)
(0.8% +3)
(1% +2)
[5%(-10) +10]
Frequency
Range Resolution
UT51
Accuracy
UT52 UT54
UT55
UT53
2kHz
20kHz
1Hz
10Hz
(2%+5)
(1.5%+5)
Voltage at open circuit: 700mV (200MΩ range,
open circuit voltage around 3V) .
Overload protection: 250VDC or AC RMS for all
ranges.
Caution: At 200M
Ω range, as test lead is short
circuit the LCD normally display 10 digits is normal,
deduct
the 10 digits from the measured reading
during
measuring.
Unpacking Inspection
Safety Information
Unpack the carton and take out the Meter. Check
the following accessories for any missing or
damaged component. Please contact your
dealership immediately if any missing or
damaged component is found.
UT50 Series are designed and manufactured in
compliance with: IEC61010, CATⅠ1000V, CAT
Ⅱ600V and CATⅢ300V, Double Insulation and
Pollution Degree.
Operating Manual------1pc
Test Leads --------------1 pair
WRN-01B Thermocouple----1set
(For UT53,UT55 Only)
Holster (Optional)
Warnings
Use the meter as specified in the manual,
otherwise the protection offered by the Meter
may be impaired.
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it may cause electric shock.
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insulation or broken wires.
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terminals and ensure good contact between
them.
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the Meter, otherwise it may cause electric
shock or damage to the Meter.
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model or similar electrical specifications.
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voltage above 1000V between COM and
grounding.
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above 60VDC or 30VAC RMS.
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batteries as soon as
" " appears.
ƔShut off the power timely after the measurements
complete. Take out the batteries if not used for
a long time.
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temperature, high moisture. The performance
of the Meter may be compromised if
moisture-affected.
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injury, do not alter internal wiring randomly.
Caution
about 2.8V
about 2.8V

Summary

Introduction to Digital Multimeters

Standard Digital Multimeter Overview

Overview of the digital multimeter's capabilities, design, and intended use.

Essential Safety Precautions

General Safety Guidelines

General warnings and guidelines for safe operation of the multimeter.

Safe Meter Usage Practices

Specific safety advice related to using the multimeter for measurements.

Maintenance and Protection Safety

Safety guidelines for maintaining and protecting the multimeter.

Technical Specifications

Measurement Range and Accuracy

Detailed accuracy, range, and resolution for various measurement functions.

Function-Specific Specifications

Specifications for DCV, ACV, ACA, DCA, Resistance, Frequency, Temperature, Diode, and Continuity.

Operating the Multimeter

Performing DC Voltage Measurements

Step-by-step guide for measuring DC voltage accurately.

Performing AC Voltage Measurements

Step-by-step guide for measuring AC voltage accurately.

Performing DC Current Measurements

Step-by-step guide for measuring DC current accurately.

Performing AC Current Measurements

Step-by-step guide for measuring AC current accurately.

Performing Resistance Measurements

Step-by-step guide for measuring resistance accurately.

Performing Frequency Measurements

Step-by-step guide for measuring frequency accurately.

Performing Temperature Measurements

Step-by-step guide for measuring temperature accurately.

Performing Diode and Continuity Tests

Step-by-step guide for testing diodes and continuity.

Performing Transistor HFE Tests

Step-by-step guide for testing transistor gain (HFE).

Detailed Measurement Procedures

Understanding Measurement Controls

Explanation of controls and indicators for making measurements.

Measuring DC Voltage Process

Detailed steps for measuring DC voltage with the meter.

Measuring AC Voltage Process

Detailed steps for measuring AC voltage with the meter.

Measuring DC Current Process

Detailed steps for measuring DC current with the meter.

Measuring AC Current Process

Detailed steps for measuring AC current with the meter.

Measuring Resistance Process

Detailed steps for measuring resistance with the meter.

Measuring Frequency Process

Detailed steps for measuring frequency with the meter.

Measuring Temperature Process

Detailed steps for measuring temperature with the meter.

Measuring Diode and Continuity Process

Detailed steps for performing diode and continuity tests.

Measuring Transistor HFE Process

Detailed steps for performing transistor HFE tests.

General Maintenance and Fuse Replacement

General Maintenance Guidelines

General advice for maintaining the multimeter's condition.

Replacing the Fuses

Instructions on how to safely replace blown fuses.

Using the Holster and Strap

Attaching and Using the Holster

Instructions for using the protective holster.

Attaching and Using the Strap

Instructions for attaching and using the carrying strap.

UNI-T UT52 Specifications

General

Type	Digital Multimeter
Display	LCD
Max Current	10A
DC Voltage Range	200mV/2V/20V/200V/600V
DC Current Range	200μA/2mA/20mA/200mA/10A
Resistance Range	200Ω/2kΩ/20kΩ/200kΩ/2MΩ/20MΩ
Capacitance Range	2nF/20nF/200nF/2μF/20μF
Diode Test	Yes
Continuity Buzzer	Yes
Data Hold	Yes
Power	9V battery (6F22)
Display Count	1999
Display Digits	3.5 digits
Max Voltage	600V
AC Voltage Range	200V/600V
AC Current Range	200mA/10A