UNI-T UT33D User Manual (English)

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l Before 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.

l Inspect 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.

l Do not apply more than the rated voltage, as marked on the Meter, between

the terminals or between any terminal and grounding.

l The rotary switch should be placed in the right position and no any

changeover of range shall be made during measurement is conducted to

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:

Rules For Safe Operation (1)

Model UT33B/C/D: OPERATING MANUAL

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UNI-T UT33D Specifications

General

Diode test	Yes
Product type	Digital multimeter
AC voltage range	200 - 500 V
DC current range	0.02 - 10 A
DC voltage range	0.2 - 500 V
Basic accuracy (DC current)	±(1%+2)
Basic accuracy (DC voltage)	±(0.5%+2)
Basic accuracy (resistance)	±(0.8%+2)
Dimensions (WxDxH)	73.5 x 35 x 130 mm
Battery voltage	9 V

Weight and Dimensions

Weight	156 g

Summary

Overview

Unpacking Inspection

Safety and Safe Operation

Safety Information

This Meter complies with standards IEC61010, including pollution degree 2 and overvoltage categories CAT I 600V, CAT II 300V.

Rules For Safe Operation

Adhere to rules to avoid electric shock, personal injury, or damage to the Meter or equipment under test.

Device Identification

International Electrical Symbols

Explanation of international electrical symbols used on the Meter and within the operating manual.

The Meter Structure

Diagram and list identifying the components of the Meter, such as LCD Display, HOLD Button, Rotary Switch, and Input Terminals.

Functional Buttons

Measurement Operations

DC Voltage Measurement

Procedure for measuring DC voltage, including connecting test leads and setting the rotary switch to the V range.

AC Voltage Measurement

Procedure for measuring AC voltage, including connecting test leads and setting the rotary switch to the V range.

DC Current Measurement

Warning and procedure for measuring DC current, emphasizing proper terminals and avoiding parallel connection.

Measuring Resistance

Warning and procedure for measuring resistance, including disconnecting power and discharging capacitors.

Diodes and Continuity Measurement

Warning and procedure for testing diodes, including checking junction voltage drop.

Model UT33C: Temperature Measurement

Warning and procedure for measuring temperature using Model UT33C, including connecting the temperature probe.

Model UT33B: Battery Test

Warning and procedure for testing batteries using Model UT33B, including connecting leads and checking polarity.

Model UT33D: Square Wave Output

Warning and procedure for measuring square wave output using Model UT33D, including setting the rotary switch.

General Specifications

Accuracy Specifications

DC Voltage

Accuracy specifications for DC Voltage measurement across different ranges and models, including overload protection.

AC Voltage

Accuracy specifications for AC Voltage measurement across different ranges and models, including input impedance and frequency response.

DC Current

Accuracy specifications for DC Current measurement across different ranges and models, including overload protection and continuous measurement limits.