Laser 5990 Instructions Manual

www.lasertools.co.uk

5990

www.lasertools.co.uk

Distributed by The Tool Connection Ltd

Kineton Road, Southam, Warwickshire CV47 0DR
T [phone] F [phone]
[e-mail] www.toolconnection.co.uk

If this product fails through faulty materials or workmanship, contact our
service department direct on: [phone]. Normal wear and tear
are excluded as are consumable items and abuse.

Guarantee

Our products are designed to be used correctly and with care for the purpose for which they are intended. No liability
is accepted by the Tool Connection for incorrect use of any of our products, and the Tool Connection cannot be
held responsible for any damage to personnel, property or equipment when using the tools. Incorrect use will also
invalidate the warranty.

If applicable, the applications database and any instructional information provided has been designed to offer general
guidance for a particular tool’s use and while all attention is given to the accuracy of the data no project should be
attempted without referring first to the manufacturer’s technical documentation (workshop or instruction manual) or
the use of a recognised authority such as Autodata.

It is our policy to continually improve our products and thus we reserve the right to alter specifications and components
without prior notice. It is the responsibility of the user to ensure the suitability of the tools and information prior to
their use.

Instructions

Automotive Multimeter

Precautions

• Always refer to instructions before use.

• When using the multimeter please observe al normal safety precautions concerning
protection against the dangers of electrical current.

• Do not used the test leads if they are damaged or the insulation or wires are bared in any
way.

• Take care when working with voltages above 35V DC or 25V AC rms; these voltages are
regarded as a shock hazard.

• Before rotating the Function / Range rotary switch (F) to another function, disconnect the
test leads from the circuit under test.

• Do not use the multimeter in a potentially explosive atmosphere or where flammable
gases or material are present.

• Do not perform resistance, diode or continuity tests on live circuits. Always discharge
filter capacitors in power supplies and disconnect the power when making resistance or
diode tests.

• Never apply voltage or current to the multimeter that the exceeds the specified maximum
as shown in the tables above.

• Always refit the test probe covers when finished with meter.

• Observe standard workshop safety procedures when using the tester.

• Do not let the tester get wet or use in damp or wet conditions.

Automotive Multimeter

The new 5990 multimeter features large LCD display with large digital readout. Measures
DC voltage and current, AC voltage and current, resistance and frequency. For automotive
testing it measures duty cycle, engine RPM (tachometer), dwell angle, diode and continuity.
Also features temperature measurement capability, data hold and auto power off function.
Shock-resisting soft grip case with probe storage and integral stand, suitable for tough
workshop conditions.

Code Description

A Digital display

B Symbols / legends

C Low battery alert symbol

D Function / selection button

E Data hold button

F Function / Range switch

G 10A socket (red lead)

H Milliamps socket (red lead)

I Multifunction socket (red lead)

J Common socket (black lead)

2 7

Controls

10A

COM

μA mA

VΩ RPM

MAX
320mA
FUSED

10A MAX
MAX 10sec

EACH 15min

FUSED

MAX

600V

CATII600V

-TEMP+

HOLD

Ω

DWELL

Ω

μA

mA

10A

V

OFF

8CYL

6CYL

5CYL

4CYL

3CYL

2CYL

1400ºF

750ºC

DUTY%

X10RPM

RPM

32kHz

3200Hz

320Hz

- +

DC AC

H

mV Mk

Ω

o 1 2 3

ºC

ºF

A
B

D

G
H

F

E

I

J

C

Instructions

Testing AC / DC Voltage:

1. Remove covers from test probe tips, insert black test lead into COM socket (J) and red
test lead into VΩ RPM (Multifunction) socket (I).

2. Set the Function / Range rotary switch (F) to the V≈ position, press the function/ selection
button (D) to select DC or AC (DC or AC symbol will be displayed).

3. DC: Touch the black test probe tip to the negative side of the circuit. Modern cars
have negative earth (ground) electrical systems although some classic cars may still be
operating with a positive earth system.

4. Touch the red test probe tip to the positive side of the circuit and read the voltage on the
display. If the polarity is reversed, the display will show a (-) minus before the value.

5. Do not measure DC voltages if a motor or component on the circuit is being switched on
and off; large voltage surges can occur that may damage the multimeter.

(AC Testing Caution: Risk of electric shock. The probe tips may not be long enough to contact
live parts with a 240V outlet because the contacts are recessed deep in the outlets. Make sure
the probe tips are touching the metal contacts before assuming that no voltage is present).

Range Scope (RPM) Resolution Accuracy

RPM

0~3260

1 RPM

+/- (2.5% + 5)

10 X RPM

10 X (0~3260)

10 RPM

Tacho (rev counter):

Range Scope (degrees) Resolution Accuracy

2 cylinder

0~180

0.1º

+/- (2.5% + 5)

3 cylinder

0~120

4 cylinder 0~90

5 cylinder 0~72

6 cylinder 0~60

8 cylinder 0~45

Dwell Angle (manual range):

Range Scope (%) Resolution Accuracy

Duty

1~99

0.1

+/- (2.5% + 5)

Duty Cycle:

Input voltage: 3Vp-p ~ 10Vp-p
Frequency range: 10Hz ~ 10kHz

Temperature:

See note (above) on range of thermocouple supplied. Accuracy does not include error of
thermocouple probe.

Accuracy specification assumes ambient temperature is stable to +/- 1ºC. For ambient
temperature changes of +/- 5ºC, rated accuracy applies I hour after the temperature change.

Range Resolution Accuracy

750ºC

1º

-20~0ºC (-4~32ºF): +/- (6% + 5)

0~400ºC (32~752ºF): +/- (1.5% + 5)

1400ºF 1º 401~750ºC (752~1382ºF): +/- (1.8% + 5)

Replacing the battery

If the ‘low battery alert’ symbol (C) appears on the digital display it indicates that the battery
should be replaced. To access the battery first peel back and remove the shock-resisting
cover. Then remove three screws to release the rear case cover. The 9V battery can then
be replaced.