Metermann 33XR User Manual

Professional
Digital
Multimeter

with Temperature
and Capacitance

Users Manual

•

Mode d'emploi

•

Bedienungshandbuch

•

Manuale d'Uso

•

Manual de uso

33XR33XR

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MADE IN TAIWAN

PATENTS PENDING

metermantesttools.com

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33XR Digital Multimeter

Contents

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Safety Information .............................................................................. 2

Introduction................................................................................................. 3

Making Measurements................................................................................. 3

Verify Instrument Operation................................................................... 3

Correcting an Overload (o) Indication ................................................... 3

Measuring DC Voltage......................................See Figure -1-................ 3

Measuring AC Voltage...................................... See Figure -2-................ 3

Preparing for Current Measurements...................................................... 3

Measuring DC Current......................................See Figure -3-................ 4

Measuring AC Current...................................... See Figure -4-................ 4

Measuring Resistance .....................................See Figure -5-................ 4

Measuring Continuity ......................................See Figure -6-................ 4

Checking Diodes ..............................................See Figure -7-................ 4

Measuring Capacitance ...................................See Figure -8-................ 5

Measuring Temperature ..................................See Figure -9-................ 5

Measuring Frequency ...................................... See Figure -10-.............. 5

Additional Features ...................................................................................... 5

Input Test Lead Warning ........................................................................ 5

MIN MAX Measurements ....................................................................... 5

Peak Hold Measurements....................................................................... 6

Auto Power Off...................................................................................... 6

Relative Measurements ..........................................................................6

HOLD Measurements ............................................................................. 6

Product Maintenance................................................................................... 7

Cleaning ...............................................................................................7

Troubleshooting .................................................................................... 7

Battery and Fuse Replacement..........................See Figure -11-.............. 7

Repair ......................................................................................................... 7

WARRANTY........................................................................................... 8

Specifications ..............................................................................................9

Users Manual

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To avoid electric shock, personal injury, damage to the meter or the equipment
under test, adhere to the following practices:

• The 33XR Digital Multimeter is UL, cUL, and EN61010-1 certified for

Installation Category III – 600V and Category II – 1000V. It is recommended for
use with local level power distribution, appliances, portable equipment, etc,
where only smaller transient overvoltages may occur, and not for primary
supply lines, overhead lines and cable systems.

• Do not exceed the maximum overload limits per function (see specifications)

nor the limits marked on the instrument itself. Never apply more than
1000 V dc/750 V ac between the test lead and earth ground.

• Inspect DMM, test leads and accessories before every use. Do not use any

damaged part.

• Never ground yourself when taking measurements. Do not touch exposed

circuit elements or probe tips.

• Do not operate the instrument in an explosive atmosphere.

• Exercise extreme caution when measuring voltage >20V // current >10mA // AC

power line with inductive loads // AC power line during electrical storms //
current, when the fuse blows in a circuit with open circuit voltage >1000 V //
servicing CRT equipment.

• Always measure current in series with the load – NEVER ACROSS a voltage

source. Check fuse first. Never replace a fuse with one of a different rating.

• Do not change the position of the Function/Range Switch while the MIN MAX,

HOLD, or REL feature is enabled. Erroneous readings will result.

• Remove test leads before opening battery or case to change battery or fuses.

Safety Information

Symbols Used in this Manual

B

Battery

T

Double insulated

F

Direct Current

B

Alternating Current

P

Complies with EU directives

I

Fuse

W
X

J
R

>

Refer to the manual
Dangerous Voltage
Earth Ground
Audible tone
Underwriters

Laboratories, Inc

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Introduction

The 33XR is a manual ranging handheld digital multimeter for measuring or testing
the following:

• DC and AC voltage • Temperature

• DC and AC current • Capacitance

• Resistance • Diodes

• Frequency • Continuity

Additional features include the following modes:
MIN MAX, HOLD, REL (relative), and Peak±

Making Measurements

Verify Instrument Operation

Before attempting to make a measurement, verify that the instrument is operational
and the battery is good. If the instrument is not operational, have it repaired before
attempting to make a measurement.

Correcting an Overload (o) Indication

An o indication may appear on the display to indicate that an overload condition
exists. For voltage and current measurements, an overload should be immediately
corrected by selecting a higher range. If the highest range setting does not
eliminate the overload, interrupt the measurement until the problem is identified
and eliminated. The o indication is normal for some functions; for example,
resistance, continuity, and diode test.

Measuring DC Voltage See Figure -1-

1. Set the Range Switch to an appropriate v range.

Select the highest range and work down if the voltage level is unknown.

2. Connect the Test Leads: Red to E, Black to COM

3. Connect the Test Probes to the circuit test points.

4. Read the display, and, if necessary, fix any overload (o) conditions.

Measuring AC Voltage See Figure -2-

1. Set the Range Switch to an appropriate V range.

Select the highest range and work down if the voltage level is unknown.

2. Connect the Test Leads: Red to E, Black to COM

3. Connect the Test Probes to the circuit test points

4. Read the display, and, if necessary, fix any overload (o) conditions.

Preparing for Current Measurements

• Turn off circuit power before connecting the test probes.

• Allow the meter to cool between measurements if current measurements

approach or exceeds 10 amps.

• A warning tone sounds if you connect a test lead to a current input before you

select a current range.

• Open circuit voltage at the measurement point must not exceed 1000 V.

• Always measure current in series with the load. Never measure current across a

voltage source.

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Measuring DC Current See Figure -3-

1. Set the Range Switch to an appropriate A range.

Select the highest range and work down if the current level is unknown.

2. Connect the Test Leads: Red to mA or 10A, Black to COM

3. Turn off power to the circuit being measured.

4. Open the test circuit (X) to establish measurements points.

5. Connect the Test Probes in series with the load.

6. Turn on power to the circuit being measured.

7. Read the display, and, if necessary, fix any overload (o) conditions.

Measuring AC Current See Figure -4-

1. Set the Range Switch to an appropriate a range.

Select the highest range and work down if the current level is unknown.

2. Connect the Test Leads: Red to mA or 10A, Black to COM

3. Turn off power to the circuit being measured.

4. Open the test circuit (X) to establish measurements points.

5. Connect the Test Probes in series with the load.

6. Turn on power to the circuit being measured.

7. Read the display, and, if necessary, fix any overload (o) conditions.

Measuring Resistance See Figure -5-

1. Set the Range Switch to an appropriate Ω range.

Select the highest range and work down if the resistance level is unknown.

2. Connect the Test Leads: Red to E, Black to COM

3. Turn off power to the circuit being measured. Never measure resistance across

a voltage source or on a powered circuit.

4. Discharge any capacitors that may influence the reading.

5. Connect the Test Probes across the resistance.

6. Read the display. If o appears on the highest range, the resistance is too large

to be measured.

Measuring Continuity See Figure -6-

1. Set the Range Switch to R.

2. Connect the Test Leads: Red to E, Black to COM

3. Turn off power to the circuit being measured.

4. Discharge any capacitors that may influence the reading.

5. Connect the Test Probes across the resistance.

6. Listen for the tone that indicates continuity (< 35 Ω).

Checking Diodes See Figure -7-

1. Set the Range Switch to G.

2. Connect the Test Leads: Red to E, Black to COM

3. Turn off power to the circuit being measured.

4. Free at least one end of the diode from the circuit.

5. Connect the Test Probes across the diode.

6. Read the display. A good diode has a forward voltage drop of about 0.6 V. An

open or reverse biased diode will read o.

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