UEi DL99B User Manual

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www.ueitest.com • email: [e-mail]

DL99B

INSTRUCTION MANUAL

• If any of the following indications occur during testing, turn
off the power source to the circuit under test:

• Arcing

• Flame

• Smoke

• Extreme Heat

• Smell of Burning Materials

• Discoloration or Melting of Components

• Read the safety precautions associated with the equipment being

tested and seek assistance or advice when performing
unfamiliar tasks.

• Keep your fingers away from the test lead metal probe contacts

and bus-bars when making measurements. Always grip the
instrument and test-leads behind the hand guards (molded into
the probes).

• In the event of electrical shock, ALWAYS bring the victim to

the emergency room for evaluation, regardless of the victim’s
apparent recovery. Electrical shock can cause an unstable heart
rhythm that may need medical attention.

International Symbols

L i s t i n g s

This instrument is designed and tested in accordance with:

IEC Publication 1010-1 (Overvoltage ca t e g o ry III), the safety requirements
for hand-held current clamps for electrical measurements and tests, the
EMC directive, and other safety standards.

Introduction

The D99B Digital Clamp-On Meter is designed for professional electrician's,
plant maintenance specialists and service technicians. Now technicians ca n
work with added confidence, knowing they’re measuring with the superior
a c c u r a c y of True RMS, increasing safety by illuminating dark work areas
with a bright LCD Work Light, back light display and extending their
measurement capabilities to 1000V AC / D C .

Features include

• True RMS

• Work light and backlit display

• 1000 Amps AC and DC

• 1000 Volts AC and DC

• Resistance to 40 kilohms

• Continuity

• Push-button ranging

• Peak hold

• Data hold

• 0.1 mV DC resolution allows use of DMM adapters

• 1-3/8” jaw capacity

• CE and UL listed CAT III

Safety Notes

Before using this meter, read all safety information carefully. In
this manual the word "WARNING" is used to indicate conditions
or actions that may pose physical hazards to the user. The word
"CAUTION" is used to indicate conditions or actions that may
damage this instrument.

WARNING!

Exceeding the specified limits of this meter is dangerous and can
expose the user to serious or possibly fatal injury.

• DO NOT attempt to measure any voltage that exceeds 1000 volts
DC or AC-RMS with this meter - UEi offers numerous alternatives
for measuring high voltage and current

• Voltages above 60 volts DC or 25 volts AC may constitute a
serious shock hazard

• DO NOT attempt to use this meter if either the meter or the test
leads have been damaged. Send unit in for repair by a qualified
repair facility

• Test leads must be fully inserted prior to taking measurements

• Always turn off power to a circuit (or assembly) under test before
cutting, unsoldering or breaking the current path. Even small
amounts of current can be dangerous

• Always disconnect the live test lead before disconnecting the
common test lead from a circuit

• When measuring high voltage, disconnect the power source before
making test lead connections. Connect the test leads to the meter
first then to the circuit under test. Reapply power

DL99B-MAN P. 1

6. Peak Hold Push-Button: Used to capture the highest AC or DC
inductive amp reading.

7. Clamp Lever: Opens and closes current clamp jaw.

8. DC A Zero: Used to establish the “zero reference” when preparing
to make DC amperage measurements. Magnetic fields in the iron
core of the jaws will be interpreted as a current reading if not
e l e c t r o n i cally compensated when measuring DC amps.

9. Rotary Function Switch: Used to power the meter on and off, or
to select on of these available measurement functions:

• Inductive AC or DC current using the clamp

• Volts AC or DC at the test lead inputs

• Resistance or continuity at the test lead inputs

10. Off Position: Turns the meter off. Always store your meter in the
off position. If the meter will not be used for a month or more,
remove the batteries.

11. Display: C o m m u n i cates function, range, and value information to
the user.

12. Common Terminal: The black test lead is plugged into this
terminal to supply the ground or “l ow” reference for voltage and
resistance measurements.

13. Volt / Ohm (Ω) Terminal: The red lead is plugged into this
terminal for AC/DC volts, ohms, and continuity measurements.

14. Maximum Input Statements: M A X 600V indicates that a
m a ximum of 600 Volts can be applied between the two terminals or
b e tween earth ground and any terminal for CAT III, 1000 V CAT II .

LCD Display Functional Description

1. Peak Hold: I n d i c ates the meter is displaying the maximum inductive

AC or DC current value recorded.

2. Continuity: I n d i cates the meter is in the continuity measurement

mode and will sound a tone when measuring resistance below
approximately 40 ohms.

3. Hold: I n d i c ates the value displayed is frozen on screen (the “DATA
HOL D” push-button is pressed).

4. BAT (Low Battery Indicator): This symbol appears when the
b a t t e ry n eeds replacement.

Note: A low battery will adversely affect accura cy

C o n t rols and Indicators

1. C l a m p : Wrapped around a single conductor when measuring
inductive AC or DC current. Opens to 1-1/4” (32 mm).

CAUTION!

The clamp uses a high-tension spring to close the jaw. DO NOT allow
fingers or objects to become pinched in the base as jaw closes.

2. Conductor Alignment Marks: Used to aid in the visual

alignment of a conductor when measuring inductive ampera g e .
Greatest accura cy is achieved when the conductor inside the clamp
is centered at the intersection of these marks.

3. Hand Guard: Used as a point of reference for the operator’s safety.

WARNING!

Always keep your hands and fingers behind the hand guards when
measuring current on exposed conductors. Contact may result
in serious safety ground or “low” reference for all measurements.

4. Data Hold Push-Button: Freezes the value displayed on the
digital read-out.

5. Range / Worklight - Backlit display Push-Button: Used to
switch from low to high range in the function selected. Note that AC
and DC voltage auto-range from 400 to 1000 volts when more than
400 volts are applied. Push and hold for 5 seconds to activate the
worklight and back light of the display.

DL99B-MAN P. 2

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