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Equus 3300 - Hands-Free DMM (10 MegOhm) User Manual

Digital multimeter, Owner’s manual

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SAFETY PRECAUTIONS/

WARNINGS

This Digital Multimeter is intended for INDOOR USE ONLY.

Pay close attention to

WARNINGS stamped on the front and rear of the

meter's case. These warnings, as well as all warnings and precautions used
through out this manual, must be followed to avoid electric shock and/or per-
sonal injury.

The RESPONSIBLE PARTY shall be made aware that, if the equipment is
used in a manner not specified by the manufacturer, the protection provided
by the equipment may be impaired.

To prevent electrical shock and/or damage to the tester or the equipment under
test, observe the following safety precautions:

DO NOT apply more than the rated voltage, as marked on the meter,
between terminals or between any terminal and earth ground.

Use caution when working above 30V AC rms, 42 V peak, or 60 V DC. Such
voltages pose a shock hazard.

To avoid false readings that could lead to possible electric shock or personal
injury, replace the batteries as soon as the low battery indicator

displays.

Use ONLY those test leads or probes provided with the meter. DO NOT use third-
party test leads or probes.

Always inspect the multimeter, test leads and any other accessories for dam-
age prior to every use. If any damage is found, do not use tester until repairs
are done.

Always consider electrical and electronic equipment to be ener-gized (live).
Never assume any equipment is de-energized.

Never ground yourself when taking electrical measurements. Isolate yourself
from ground by using dry rubber insulating mats to cover all exposed/ground-
ed metal. Stand on rubber mats and wear dry clothing.

SPECIFICATIONS

GENERAL SPECIFICATIONS AND FEATURES

3-½ digit LCD display (maximum reading of 2000)

Manual range control

Automatic negative (-) polarity indication

Automatic zero adjustment

Over range indicator (except 10 A function). Displays "1" on LCD

Low battery indicator. Displays battery symbol

on LCD

Safety standard: CE EMC/LVD. The meter is up to the standards of IEC1010
Pollution Degree 2, over voltage Category 2 (signifies protection against
transient impulses at the local level mains electrical supply).

Equipment marked

is protected throughout by Double or Reinforced Insulation.

Operating environment:

Temperature - 32° to 104° F. (0° C to 40° C)
Humidity - Less than 80% relative humidity (non-condensing)
Altitude - up to 6562 ft (2000 meters)

Storage environment:

Temperature - 4° to 140° F (- 20° to 60° C)
Humidity - Less than 90% relative humidity (non-condensing)

Power Supply: One 9-volt (6F22) battery

Fuse: 315mA/250V 5X20 mm (Radio Shack, GMA/217 series; #270-1046)
fuse

Dimensions:

Height - 5.50 in. (139 mm)
Width - 3.50 in. (89 mm)
Depth - 1.25 in. (32 mm)

Weight (including batteries): approximately 5.7 oz (170 g)

ELECTRICAL SPECIFICATIONS

Accuracy of specifications in the following tables are based on an operating
temperature of 64°F to 82°F (18°C to 28°C) and a relative humidity of less than
75%.

Maximum voltage from V ma socket to COM socket is 500V AC/DC; from COM
socket to ground is 300V AC/DC.

DC VOLTS

RESISTANCE (OHMS)

DIODE TEST

DC AMPS

BATTERY TEST

AC VOLTS

TESTING PROCEDURES

A. AC/DC VOLTAGE MEASUREMENT

Range

Resolution

Accuracy

Overload

Protection

200

0.1

±(1% of reading

2K

1

+ 5 digits)

250V DC/AC RMS

20K

10

200K

100

20M

10K

±(2% of reading
+ 5 digits)

Open Circuit Voltage: Approximately 3V

Function

Range Resolution

Accuracy

Overload

Protection

Diode test

1mV

0.5 ~ 0.8V

250V
DC/AC
RMS

Open Circuit Voltage: Approximately 2.8V
Forward Voltage Drop: Approximately 1mA

Range

Resolution

Accuracy

Overload

Protection

2000

µ

A

1

µ

A

20mA

10

µ

A

±(1.5% of reading

0.315A/250V fuse

200mA

100

µ

A

+ 5 digits)

10A

10mA

±(2% of reading

Non-Protected

+ 5 digits)

Measuring time is equal to or less than 15 seconds and time
interval is equal to or over 15 minutes.

Range

Resolution

Overload Protection

1.5V

10mV

0.315A/250V fuse

9V

Overload

Range

Resolution

Accuracy

Protection

200V

100mV

±(1.2% of reading

500V DC or AC

500V

1V

+ 10 digits)

Frequency: 40-400Hz

OWNER’S MANUAL

DIGITAL MULTIMETER

MRP #93-0187

Range

Resolution

Accuracy

Overload
Protection

200mV

100

µ

V

230 Vrms

2V

1mV

±(0.8% of reading

20V

10mV

+ 5 digits)

500V DC

200V

100mV

or AC

500V

1V

±(0.8% of reading

+ 5 digits

Input impedance: 10M

for all ranges.

- 1 -

- 2 -

WARNING

To avoid possible electric shock, instrument damage and/or equipment
damage, DO NOT attempt to measure voltages ABOVE 500V AC/DC or
take measurements if the voltage is unknown. 500V AC/DC between the
COM and V jacks is the maximum voltage that this instrument is
designed to measure. The "COM" terminal potential should not exceed
300V AC/DC measured to ground.