UNI-T UT61D Quick Start Guide

English
GREAT BRITAIN • customer service tel: 0845 300 9799 e-mail: customerservice@clasohlson.co.uk internet: www.clasohlson.com/uk
Ver. 20140228
USB Multimeter
Art.no 36-4717 Model UT61D
Note: This is only a quick-start guide. For complete instructions
please refer to the accompanying CD.
Please read theentire instruction manual before use and save it for
future reference. Wereserve theright for any errors in text or images
and for making any necessary technical changes to this document.
Ifyou should have any questions concerning technical problems
please contact our Customer Services.
1. Safetyinstructions
• This meter is designed for indoor use.
• Do not use this meter if it or thetest leads appear to be
damaged, or if you suspect that themeter might not work
properly.
• Make sure that your fingers are behind thefinger guards when
using thetestleads.
• Make sure that thepower is turned off before working on
thepower circuit. Evenlow voltages can be dangerous!
• To avoid shocks you need to be careful when you work with
voltage higher then 60 V DC or 30 V AC RMS. Voltages higher
than this pose arisk of heavy electric shocks.
• Set theright measuring range using theselector before
starting to measure and do not change therange whilst taking
ameasurement.
• This meter is protected by fuses, but they will not protect
themeter from all kinds of misuse.
2. Functions
3. [ Range ]
• Pressonce to enter manual settings mode; thebuzzer
sounds once.
• Pressrepeatedly to advance through themeasuring ranges;
thebuzzer sounds.
• Holdin for two seconds to return to Autorange (automatic
measuring rangesetup).
4. [ Hold/Light ]
• Pressto save areading (data hold function), press once
more to delete thereading.
• Holdin for two seconds to turn on thedisplay backlight for
10 seconds.
5. Multifunction selector
8 different measuring functions and off switch.
6.
Testlead sockets
7.
Testlead sockets
8. [ REL ▲/RS 232 (USB) ]
• Pressonce to enter RELmode.
• Pressonce to exit RELmode.
• Holdin for two seconds to activate or deactivate theRS232/
USB function. Thesleep function is exited when theRS232/
USB function is activated and
disappears from
thedisplay.
9. [ Hz % ]
• Pressto measure frequency.
• Pressto select Duty Cyclevalue.
10. Alternative functions (blue button)
Press to select alternative functions for thesettings modes
inblue.
11.
Testlead sockets
12.
Testlead sockets
Display symbols
Thedata hold function is activated.
Thesleep mode is activated.
Indicates anegative reading.
Indicator for AC measurement.
Indicator for DC measurement.
TheAutorange is activated (meter automatically selects
therange with bestresolution).
Indicator for manual range mode (not on this model).
Thereading is too high for this measuring range.
Indicator for thediodetest.
Thecontinuity buzzer is activated.
Maximum and minimum reading.
Dataoutput in progress (USB/RS232).
Lowbattery warning – replace thebattery.
REL is activated, thestored value minus thepresent value
is displayed.
Resistance, Ω Ohm, kΩ (kiloohm), MΩ(megaohm).
Voltage, mV (millivolt), V (volt).
Current, μA (microampere), mA (milliampere),
A(ampere).
Capacitance; nF (nanofarad), μF (microfarad),
mF(millifarad).
Frequency, Hz (hertz), kHz (kilohertz),
MHz(megahertz).
3. Operation
• Warning: Consult a qualified electrician before using
theinstrument if you are at all unsure about its usage.
• Always ensure that thecorrect function and range is selected.
Ifin doubt about thecorrect range, start with thehighest and
work downwards.
• When measuring voltage always ensure that themeter
is switched to thecorrect function range and not set to
thecurrent, resistance or diode test range. Alwaysensure
that you use thecorrect test lead socket for thetype of
measurement to bemade.
• Make sure that theobject to be measured is not “live”, i.e.
conducting any current before connecting test leads in series
with it (such as when measuring current).
• Make sure that thetest leads are in good condition with no
damage to theinsulation.
4. Voltage measurement
Measuring DC voltage
6. Resistance measurement
1. LCD display
2. [ Max Min ]
• Pressto switch between max and min measured value.
• Holdin for two seconds to return to normal display.
1. Connect theblack test
lead to
and
thered test lead to
.
2. Setthefunction selector
to for DC voltage
measurement.
3. Ifyou wish to change
therange manually,
press [ Range ]
severaltimes.
4. Connect thetest leads
across thesource or
load to be measured.
5. DC and AC Current measurement
1. Connect theblack test
lead to and
thered test lead to
(for 0–600mA)
or to
(fortherange
600mA– 10A).
2. Setthefunction selector
to , or .
3. Themeter is preset to
measure DC, change
to AC using theblue
button(10).
4. Connect thetest leads
in series with thecurrent
source to be measured.
5. When measuring current
between 600 mA and
10A (without fuse) follow
themethod above but
connect thered test lead
to
instead.
1. Connect theblack test
lead to
and
thered test lead to
.
2. Setthefunction selector
to theresistance
measurement .
3. Connect thetest leads
across thecircuit to
betested.
7. Holdmode
1. Pressthe[ Hold/Light ] to save thepresent reading.
2. Thebuzzer sounds once and appears on thedisplay when
Hold is activated.
3. Thereading is deleted if you press thebutton onceagain.
8. Backlight
Hold in [ Hold/Light ] for two seconds to turn on thebacklight.
Thelight will turn off automatically after 10 seconds.
Measuring AC voltage
1. Connect theblack test
lead to and
thered test lead to
.
2. Setthefunction selector
to for AC voltage
measurement.
3. Ifyou wish to change
therange manually,
press [ Range ]
severaltimes.
4. Connect thetest leads
across thesource or
load to be measured.
1
3
4
5
7
2
6
8
9
10
11
12

UNI-T UT61D Specifications

General

Backlight	Yes
Product type	Digital multimeter
Frequency range	0.01 - 10000 kHz
AC current range	0.6 - 10 A
AC voltage range	0.06 - 750 V
DC voltage range	0.06 - 1000 V
Dimensions (WxDxH)	87 x 180 x 47 mm
Battery voltage	9 V

Weight and Dimensions

Weight	370 g