Data Harvest EASYSENSE Vu+ User manual

EASYSENSE Vu+
Reference Manual

EASYSENSE Vu+ Reference Manual DO255 (3)
2
Data Harvest Group Ltd.
CONTENTS
Copyright: all rights reserved.
This manual may be copied for use within the premises of the Licensee on condition that it is not
loaned, sold or used outside the Licensee's premises.
Data Harvest's policy is to continually improve products and services, so we reserve the right to make
changes without notice. It is acknowledged that there may be errors or omissions in this publication for
which responsibility cannot be assumed. No liability will be accepted for loss or damage resulting from
use of information contained in this manual or from uses as described.
What’s supplied?.............................................................................................................3
Getting to know your Vu+ data logger ............................................................................3
Charging .....................................................................................................................3
The EASYSENSE Vu+ data logger.................................................................................4
Vu+ buttons.................................................................................................................4
Sensors...........................................................................................................................5
The built-in sensors ....................................................................................................5
The plug-in sensors ....................................................................................................6
Changing a sensor’s range or turning a sensor on or off................................................6
Ways to capture data with Vu+.......................................................................................6
Using Vu+ standalone (without a computer)...................................................................7
Meter...........................................................................................................................7
Pictogram....................................................................................................................8
EasyLog......................................................................................................................9
Snapshot...................................................................................................................10
Timing.......................................................................................................................11
Stopwatch.................................................................................................................14
Counting....................................................................................................................14
Review......................................................................................................................15
Bluetooth...................................................................................................................15
System......................................................................................................................16
Switch Off............................................................................................................16
Sensor (changing range or turning on or off)......................................................16
Delete Data.........................................................................................................17
Full Reset............................................................................................................17
Language............................................................................................................17
Date Style............................................................................................................17
Decimals .............................................................................................................18
Logger Name ......................................................................................................18
About...................................................................................................................18
Using Vu+ connected via USB to a computer...............................................................18
Using Vu+ after the initial setup................................................................................19
Using Vu+ connected via Bluetooth to a computer.......................................................19
When connecting to a Windows computer ...............................................................19
When connecting to a iPad or Android device..........................................................20
The EasySense software overview...............................................................................20
Retrieve Remote.................................................................................................23
Technical information....................................................................................................23
Selecting the sensor range.......................................................................................23
Powering Vu+ ...........................................................................................................23
Batteries..............................................................................................................24
Auto switch off.....................................................................................................24
Internal Clock and Calender .....................................................................................24
Vu+’s memory...........................................................................................................24
Fitting the lanyard..........................................................................................................25
Hard and Full Reset......................................................................................................25
Specifications................................................................................................................26
Care & Maintenance .....................................................................................................26
Updating EASYSENSE Vu+’s Firmware.......................................................................26
Practical information for Vu+’s plug-in Temperature sensor.........................................27
Limited warranty............................................................................................................28
Document No: DO255 (3)

EASYSENSE Vu+ Reference Manual DO255 (3)
3
Data Harvest Group Ltd.
The EASYSENSE Vu+ data logger
Gratnells
SmartCase
Plug-in Vu
Temperature
sensor
Mini USB lead
Lanyard
What’s supplied?
Getting to know your Vu+ data logger
Charging Charge EASYSENSE Vu+ fully before first use
Connect Vu+ directly to a USB port on your computer* (or a powered USB hub) using the USB cable
supplied with it.
Note: Vu+ can also charge from a USB mains charger that outputs 5 V at 500 mA or more.
A full charge can take up to 8 hours.
A battery charging symbol will be displayed on Vu+’s screen while the logger is charging.
*Your computer must be turned on and not in sleep or standby mode; otherwise, the battery may drain
instead of charge.

EASYSENSE Vu+ Reference Manual DO255 (3)
4
Data Harvest Group Ltd.
The EASYSENSE Vu+ data logger
Vu+ buttons
The ENTER button is used to start data collection, progress to the next screen, confirm a
choice or take a sample.
The square STOP button is used to stop data being recorded or return to the previous screen
The SCROLL buttons are used to scroll through menus on the LCD screen or to browse
measurements during data logging.
To operate EASYSENSE Vu+, press any of these buttons.
Sound sensor (grid visible)
Inputs A and B for
plug-in sensors
Light sensor (visible)
Temperature sensor
(not visible)
LCD display
STOP or
BACK button
Built-in rechargeable battery
USB input
Battery power level indicator
SCROLL up button
ENTER or SELECT
button
SCROLL down
button
Lanyard slots

EASYSENSE Vu+ Reference Manual DO255 (3)
5
Data Harvest Group Ltd.
Sensors
The built-in sensors
Vu+ is a fully self-contained portable data logger with 3 built-in sensors –Sound, Light and
Temperature. It is supplied with the default range for its sensors selected (shown in the following table
in bold).
Vu+ will automatically display values using the range selected. The built-in sensors can be hidden from
the display –see page 16.
Sound sensor
This sensor has one range, 40 to 110 dBA (decibels), which is used to measure sound pressure level
(loudness). It is responsive to both single sounds (such as a whistle or handclap) and continuous
background noise (such as passing traffic, classroom noise).
Light level sensor
This sensor has 3 ranges to choose from.
Indoor 1 k lx. This lower range is suitable for recording at indoor light levels and so is normally
selected for use in the classroom.
In/Out 10 k lx. This medium range is suitable for recording bright light levels indoors or low light
levels outdoors.
Outdoor 100 k lx. This larger range is suitable for recording light level outdoors in sunlight, which
makes it ideal for environmental monitoring.
Temperature sensor
This sensor has six ranges to choose from, three Celsius and three Fahrenheit. The range selected
will also be applied to plug-in temperature sensors.
Notes:
All Temperature sensors, built-in or plug-in will use the same range.
The Vu+ logger can only be used in an environment of 0 to 40C, 0 to 95%RH (non-condensing).
The speed of reaction of the built-in temperature sensor to any change in external temperature
will be delayed by Vu+’s plastic case.
Built-in Sensors
Ranges
Sound
40 to 110 dBA
Light level
Indoor 1 k lx (0 to 1,000 lx)
In/Out 10 k lx (0 to 10,000 lx)
Outdoor 100 k lx (0 to 100,000 lx)
Temperature
Celsius 0 to 50°C
Celsius 0 to 110°C
Celsius -30 to 110°C
Fahrenheit 0 to 120˚F
Fahrenheit 0 to 232˚F
Fahrenheit -22 to 230˚F

EASYSENSE Vu+ Reference Manual DO255 (3)
6
Data Harvest Group Ltd.
The plug-in sensors
Sensors plug into the sockets labelled Aand
Bat the top of the Vu+ logger
When a sensor is connected it will
automatically be detected and displayed on
the LCD display.
Sensors can be divided into two main types:
1. Analogue –used to measure physical quantities such as temperature, sound, light, pH, etc.
2. Digital - switch-type sensors (e.g. Light gates and Timing mats) that are either ON or OFF and
are used to calculate time, speed and acceleration.
Please contact your supplier for an up-to-date list of Vu+ sensors.
Changing a sensor’s range or turning a sensor on or off
Use the up or down buttons (▲▼) to scroll the list until the cursor is
pointing at Meter and press the enter button ►.
Press the enter button ►again.
Use the up or down buttons (▲▼) to move the cursor until it is
pointing at the appropriate sensor and press enter ►.
Use the ▲▼ buttons to move the cursor until it points at the
appropriate option (either Set range or Turn On or Off) and press
enter ►.
Note: If a sensor only has one range then only Turn Off will be available.
Set range
The cursor will indicate the current range selected.
Use the up or down buttons (▲▼) to scroll the list until the cursor is
pointing at the required range. Press enter ►to select the range.
Press the stop button to return to the sensor window.
Turning a built-in sensor ON or OFF the display
With the cursor pointing at Turn Off or On press enter ►
to return to the sensor window.
Press the stop button to return to Meters.
Note: If you change a sensor’s range or turn it on/off via the logger while connected to a computer, it may be
necessary to select New in the software for these changes to be detected.
Ways to capture data with Vu+
There are different ways that Vu+ can be used to collect data.
1. As a standalone instrument:
Vu+ is used to display, collect and store data while disconnected from the computer. I.e.
a. Display readings on its LCD screen (but not stored) using Meter or Stopwatch mode.
b. Displayed, collected and stored using Vu+’s logging menu options e.g. Pictogram, EasyLog,
Snapshot, Timing and Counting.
▼
Sound
►Light
Temperature
▲
▼
►0-1k lx
0-10k lx
0-100k lx
Sensor sockets
▼
Light
►Set range
Turn Off
Light
Set range
►Turn Off
▲

EASYSENSE Vu+ Reference Manual DO255 (3)
7
Data Harvest Group Ltd.
c. Setup via Setup Remote in the EASYSENSE software to log data for a set time period. See
page 23.
The data collected is stored in Vu+’s memory to either be reviewed on Vu+’s screen or retrieved
to the EASYSENSE software on a computer.
Multiple sets of data can be stored in Vu+’s memory. The actual number will depend on the size
of the data sets and that is dependent on how many sensors are connected and how many
readings are taken.
2. As a logger connected to a computer:
Vu+ is entirely driven by the software on the host computer. The data from the sensors is
transmitted immediately to the computer and displayed on the computers screen using the
options in the EASYSENSE software. This method of collection is useful for many classroom-
based experiments. See page 18.
Using Vu+ standalone (without a computer)
EASYSENSE Vu+ has no ON switch. To ‘switch’ on press any button on the panel.
Notes:
If Vu+ is operating on battery power and is idle, it will automatically switch itself off after 2 minutes. Press
any button to resume operation.
Vu+ does not auto switch off while powered from a USB port.
Vu+ has a menu of different options available, which are
displayed on the built-in LCD screen.
There are seven working modes, which can be used to collect data
without being connected to the computer. These are Meter,
Pictogram, EasyLog,Snapshot, Stopwatch, Timing and
Counting modes.
A menu option is selected by using the scroll buttons to move the cursor
up ▲or down ▼ until it is pointing at the required option then press the
enter ►button to select.
If using plug-in sensors they should be connected before entering a logging mode (except for Meters
when they will automatically ID and then display readings).
Note: Some of the following examples show the effect seen on the LCD display when there is no sensor plugged
into Input A or B (so A and B are omitted from the list).
Meter
In Meter mode Vu+ will display measurements from the sensors (built-in and any plug-in
sensors) on the LCD screen but will not store any data.
Connect any plug-in sensors if required. If the display is turned off, press any button to wake up Vu+.
While in the main menu use the up or down buttons ▲▼ to scroll until the cursor is pointing at
Meter. Press the enter button ►to select.
Meter
Pictogram
EasyLog
Snapshot
Timing
Stopwatch
Counting
Review
Bluetooth
System
Press the enter button to switch an internal
sensor off or change a sensor’s range
Meter
Press stop to pause the display, ( ▌▌) then
either stop again to exit Meter or enter to
return to the meter screen
Use the up or down buttons to
view data from the sensors
A
28.5 ˚C
50.9 dBA
150 lx

EASYSENSE Vu+ Reference Manual DO255 (3)
8
Data Harvest Group Ltd.
Use the up and down buttons ▲▼ to view data from the sensors.
Use the enter button ►to check or change the sensors range or to switch a sensor off (see page 6).
The stop button will temporarily halt the updates to the sensors readings. Two lines ▌▌ (top left)
indicate that the display is paused.
Press enter ►to cancel pause and continue in Meters.
Press stop again to exit Meters and return to the main menu.
Pictogram
Pictogram uses an image, block or bar to represent the data. Each represents a 10th of a total range
(or span) of the sensor and displays a number from zero to ten (proportional to the reading). Sensor
readings are captured every time the enter button ► is pressed, rather than at regular time intervals.
The samples are stored to Vu+’s memory - a maximum of ten samples per data set.
Connect any plug-in sensors. If the display is turned off, press any button to wake up Vu+.
While in the main menu use the up or down buttons ▲▼ to scroll until the cursor is pointing at
Pictogram. Press the enter button ►to select.
Use the ▲▼ buttons to move the cursor until it points at how you want the data to be
represented. Press enter ►to select.
Each time you press the enter button ►Vu+ will take a reading from the sensors (built-in and
any plug-in) and will show the number of samples taken so far.
Use the up or down buttons ▲▼ to scroll and view data from the sensors.
Note: If Vu+ goes into ‘sleep’ mode during logging, press any button to wake up the logger and then ►to
take a reading.
When you have finished sampling press the stop button to close the data set, then ► to
confirm your choice.
The readings will be stored as a data set with a maximum of ten samples per set. A data set is
identifiable by the method and time and date the recording was started i.e. Pictogram 09/05/16 16:12:43.
The contents of the data set can be:
Reviewed on Vu+ - select Review from the main menu, use the ▲▼ buttons to locate the data
set and press enter ► to select. Use the ▲▼ buttons to scroll through individual readings.
Downloaded to a computer by selecting Retrieve Remote from the Home
screen in the EasySense software (see page 23).
Press either enter to confirm your
choice or stop to continue logging
▼
Meter
►Pictogram
EasyLog
▲
▼
Icon
►Block
Bar
▲
3 ▌▌▌
5 ▌▌▌▌▌
4 ▌▌▌▌
Samples taken 2
Stop Recording?
►to stop
█to go back
Select whether data should be
represented by an icon
(picture), a block or a bar
Press stop when
you’ve taken
enough samples
Press the enter button
to collect a sample
(maximum of 10)

EASYSENSE Vu+ Reference Manual DO255 (3)
9
Data Harvest Group Ltd.
Key for built-in sensors
Sound
40 to 110 dBA
Scale (10th of range)
7 dBA
Light
0 to 1 k lx
0 to 10 k lx
0 to 100 k lx
Scale (10th of range)
100 lx
1,000 lx
10,000 lx
Temperature ˚C
0 to 50˚C
0 to 110˚C
-30 to 110˚C
Scale (10th of range)
5˚C
11˚C
14˚C
Temperature ˚F
0 to 120˚F
0 to 232˚F
-22 to 230˚F
Scale (10th of range)
12˚F
23.2˚F
25.2˚F
EasyLog
With EasyLog it is not necessary to set the duration of the recording –Vu+ will capture data until
stopped.
Connect any plug-in sensors. If the display is turned off, press any button to wake up Vu+.
While in the main menu use the up or down buttons ▲▼ to scroll until the cursor is pointing at
EasyLog. Press the enter button ► to automatically begin logging.
If using more than 3 sensors use the ▲▼ buttons to view the current value while still logging.
The bottom line of the LCD display is a visual indicator of logging as it takes place, each time the
line completes logged samples are compressed and the sample rate alters.
Press the enter ► button to see a logging summary i.e. samples taken, current logging interval
and the elapsed time (days / hours: minutes: seconds). Press enter ►again to return to the
normal screen.
Note: If Vu+ goes into ‘sleep’ mode during logging, any button press will wake up the logger.
When the investigation is complete press the stop button . Vu+ will continue to log data until
you press the enter ►button to confirm your choice
The data will be stored as a data set identifiable by the method and time and date the recording was
started i.e. EasyLog 09/05/12 16:12:43.
The contents of the data set can be
Reviewed on Vu+ - select Review from the main menu, use the ▲▼ buttons to locate the data
set, press enter ► to select. Use the ▲▼ buttons to scroll through individual readings.
Downloaded to a computer by selecting Retrieve Remote from the Home
screen in the EasySense software (see page 23).
Press stop to finish logging, then either enter to
confirm your choice or stop to continue logging
Press the enter button to view a logging summary, press
enter again to return to the EasyLog screen
▼
Pictogram
►EasyLog
Snapshot
▲
40.0 dBA
251 lx
24.0 ˚C
Stop Recording?
►
to stop
█
to go back
Sampled 410
Interval 500 ms
00/00:03:24

EASYSENSE Vu+ Reference Manual DO255 (3)
10
Data Harvest Group Ltd.
Vu+ records data at a rate of 40 samples per second until it has captured 1,000 samples. At this point
the sample rate halves (i.e. 20 samples per second) and alternate samples are discarded (leaving 500
samples). It will continue at this speed until it has captured another 500 samples (1,000 in total) then
the sample rate halves (i.e. 10 samples per second) and discards half the stored data, and so on.
While battery powered Vu+ will stay awake until the interval between readings reaches 5 seconds or
greater –at this point it will begin to sleep (auto switch off) between samples to conserve battery
power. When Vu+ is asleep, sensor readings can be viewed by pressing any button to ‘wake’ it up.
Note: Vu+ does not auto switch off when accepting power.
When the sample interval is greater than or equal to one second (after logging for 8 minutes and 20
seconds), it is possible to download data from Vu+ to a computer to check its validity (without
interrupting the recording) using Remote ► Retrieve Remote from Home in the EasySense software.
Note: If you would prefer to record remotely for a specified time span use Remote ►Setup Remote from the
Home screen in the EasySense software.
Snapshot
Snapshot mode enables you to capture sensor readings every time the enter button ►is pressed,
rather than at regular time intervals.
Sample Rate
Interval
(seconds)
Samples
Days
Hours
Min.
Sec.
40 per sec
0.025 (25 ms)
0 - 1000
25
20 per sec
0.05 (50 ms)
Compress to ½
500 - 1000
50
10 per sec
0.1 (100 ms)
Compress to ½
500 - 1000
1
40
2 per sec
0.5 (500 ms)
Compress to a fifth
200 - 1000
8
20
1 per sec
1
Compress to ½
500 –1000
16
40
Every 5 sec
5
Compress to a fifth
200 - 1000
1
23
20
Every 15 sec
15
Compress to ⅓
330 - 1000
4
10
0
Every 30 sec
30
Compress to ½
500 - 1000
8
20
0
Every 1 minute
60
Compress to ½
500 - 1000
16
40
0
Every 5 minutes
300
Compress to a fifth
200 - 1000
3
11
20
0
Every 15 minutes
900
Compress to ⅓
300 - 1000
10
10
0
0
Every 30 minutes
1800
Compress to ½
500 - 1000
20
20
0
0
Every 1 hour
3600
Compress to ½
500 - 1000
41
16
0
0
Press enter to confirm
your choice or stop to
continue logging
Press stop when you’ve
taken enough samples
Press enter to
take a sample
48.8 dBA
356 lx
24.0 ˚C
Samples taken 8
▼
EasyLog
►Snapshot
Timing
▲
Stop Recording?
►
to stop
█
to go back
Samples taken 2

EASYSENSE Vu+ Reference Manual DO255 (3)
11
Data Harvest Group Ltd.
Connect any plug-in sensors. If the display is turned off, press any button to wake up Vu+.
While in the main menu use the up or down buttons ▲▼ to scroll until the cursor is pointing at
Snapshot. Press the enter button ►to select.
Each time you press the enter button ► a reading will be taken from the sensors. The bottom
line of the LCD will display the number of samples taken so far.
If using more than 3 sensors use the ▲▼ buttons to view the current value from the sensors
while still logging.
Note: If Vu+ goes into ‘sleep’ mode during logging, press any button to wake up the logger then press ►to
take a reading.
When you have finished sampling press the stop button to close the data set, then enter ►to
confirm your choice.
The readings will be stored as a data set identifiable by the method and time and date the recording
was started i.e. Snapshot 09/05/16 16:12:43. At least 650 samples can be stored in one data set (the
limit is dependent on the number of sensors).
The contents of the data set can be
Reviewed on Vu+ - select Review from the main menu, use the ▲▼ buttons to locate the data
set, press enter ► to select. Use the ▲▼ buttons to scroll through individual readings.
Downloaded to a computer by selecting Retrieve Remote from Home in
the EasySense software (see page 23).
Timing
Timing is used to set up and store simple time and speed measurements. Connect the digital switch
type sensors before selecting Timing either to Input A or both Input A and Input B.
The possible options are Time at A, Time from A to B, Time A to A (stopwatch), Speed at A and Speed
from A to B.
For Vu+ to perform direct calculations of speed, you will need to select the parameter used in the
experiment i.e.
For Speed A to B select the distance between the sensor connected to input A and the sensor
connected to input B.
For Speed at A select the width of the single interrupt card that will pass through the Light gate
connected to input A.
Speed at A = Length of single interrupt card
Time
Speed from A to B = Distance from A to B
Time
l

EASYSENSE Vu+ Reference Manual DO255 (3)
12
Data Harvest Group Ltd.
Time example Speed example
If recording Time or Speed at A connect a digital sensor to input A. For Time or Speed from A to B
connect digital sensors to both Input A and B.
If the display is turned off, press any button to wake up Vu+. While in the main menu use the up or
down buttons ▲▼ to scroll until the cursor is pointing at Timing. Press the enter button ►to
select.
Use the ▲▼ buttons to scroll until the cursor is pointing at either Time or Speed. Press the enter
button ►to select.
Use the ▲▼ buttons to scroll until the cursor is pointing at either Time or Speed at A, Time or
Speed from A to B or Time A to A (stopwatch). Press the enter button ►to select.
If Speed is selected ▲▼ scroll to choose the parameter that matches your setup. Press the enter
button ►to select.
For Speed at A select the width of the single interrupt card (from 10 to 120 mm).
For Speed from A to B select the distance from the sensor connected to A to the sensor
connected at B (from 0.10 to 6.0 metres).
▼
Snapshot
►Timing
Stopwatch
▲
▼
Snapshot
►Timing
Stopwatch
▲
▼
►Time
Speed
▼
►Time at A
Time A to A
Time A to B
Time at A
203 ms
Samples taken 3
Press
enter to
alter
display to
seconds
Stop Recording?
►
for yes
█for no
Time
►Speed
▲
▼
►
Speed A
Speed A to B
▼
20mm
►
30mm
40mm
▲
Scroll to find
the correct
card width
Press stop to exit, then either enter to confirm
your choice or stop to continue logging
Speed at A
0.28 m/s
Samples taken 5

EASYSENSE Vu+ Reference Manual DO255 (3)
13
Data Harvest Group Ltd.
When a signal change from the digital sensor/sensors is received, the timing measurement will be
displayed on the LCD screen. Time data will be measured in milliseconds, press enter ►to alter
the display to show seconds. Speed data is in metres per second (m/s).
The bottom line of the LCD will display the number of samples taken so far.
Press the stop button to finish or cancel any pending timing event and then enter ►to confirm
your choice.
The readings will be stored as a data set identifiable by the method and time and date the recording
was started i.e. Timing 09/05/12 16:12:43. Up to 850 samples can be stored in one data set.
The contents of the data set can be
Reviewed on Vu+ - select Review from the main menu, use the ▲▼ buttons to locate the data
set, press enter ► to select. Use the ▲▼ buttons to scroll through individual readings.
Downloaded to a computer by selecting Retrieve Remote from the Home
screen in the EasySense software (see page 23).
Other calculations can be performed on the timing data by downloading to the EasySense software,
then using the Show Data as function from the Settings menu in Timing. It will be necessary to enter
the parameter used in the investigation e.g. the length of a segment of a double interrupt card to
calculate acceleration from a single Light gate at A.
Timing options
Time or Speed at A: Timing starts when the signal at input A
changes and stops when the signal reverts back.
With Light gates it will be the time it takes for an object to pass through
the light beam.
For a Push Switch it will be the length of time that the switch is kept
depressed.
For Timing mats it will be the length of time someone stands on the mat.
Time or Speed from A to B
Timing will start when a signal change is detected at sensor A and stops when the signal at B changes
(so it measures the time taken by an object to travel from sensor A to sensor B).
Time A to A (stopwatch)
The time will start to be measured when the signal at input A changes (ON)
and will continue until the signal at A changes again (ON) i.e. like a
stopwatch.
AStart - A On Stop - B On
B

EASYSENSE Vu+ Reference Manual DO255 (3)
14
Data Harvest Group Ltd.
Stopwatch
Stopwatch is used to time events by using either:
The enter ►button on Vu+ to start and stop the timer.
One digital switch type sensor connected to input A or B to start and stop the timer.
Two digital switch type sensors connected to input A and B, use A to start and B to stop the timer.
If a plug-in sensors are connected, Vu+ will automatically use the input from this sensor.
Counting
Counting is used to count events by using:
One digital switch type sensor connected to either input A or input B
Two digital switch type sensors connected to both input A and input B
The up ▲(A) or down ▼(B) buttons on Vu+.
If plug-in sensors are connected, Vu+ will automatically count using input from those sensors.
If you are using plug-in digital sensors connect them to input A and/or B. If the display is turned
off, press any button to wake up Vu+.
While in the main menu use the up or down buttons ▲▼ to scroll until the cursor is pointing at
Counting. Press the enter button ►to select.
Press either enter to confirm your choice
or stop to continue logging
The scroll icons indicate the
up and down buttons are
being used instead of a
plug-in sensor to count.
Select enter to perform simple
mathematical functions on the A, B data
▼
Stopwatch
► Counting
Review
▲
Stop recording?
►
to stop
█ to go back
0 10
A 5
B 8
A + B = 13
Select ►enter to start, then ►to stop
Select ▲to reset to zero
If two plug in digital sensors are connected, switch
A on to start logging then use switch B on to stop.



B
=
Stop 




A=Start ▲Reset

If one plug in digital sensor is used switch on
to start logging then on again to stop.



A=Start ▲Reset




A
=
Stop 

▼
Timing
►
Stopwatch
Counting
▲


►Start ▲Reset


EASYSENSE Vu+ Reference Manual DO255 (3)
15
Data Harvest Group Ltd.
If you are using plug-in digital sensors each time the state of the sensor is changed to On e.g. by
pressing a push switch, the number of counts will advanced by one.
If the scroll buttons on Vu+ ▲▼are used then the count will increase by one each time you press
a button. You can use either one or both buttons.
Vu+ will display both the numeric value and show it as a bar graph. The bar maximum starts as 10, if
the count goes above 10 it will increase to 20, then 50, 100, 250, 500, up to a maximum of 1,000.
Note: If Vu+ goes into ‘sleep’ mode during logging, press any button to wake it up.
If counts are from both A and B pressing the enter button ► will cycle through simple calculations
based on the counting data (e.g. A + B = 13, A –B = -3, B –A = 3, Difference = 3).
Press the stop button to finish and then enter ►to confirm your choice.
The count will be stored as a data set identifiable by the method and time and date the recording was
started e.g. Counting 09/05/16 16:12:43.
The contents of the data set can be
Reviewed on Vu+ - select Review from the main menu, use the ▲▼ buttons to locate the data
set, press enter ► to select.
Downloaded to a computer by selecting Retrieve Remote from the Home
screen in the EasySense software (see page 23).
Review
You can use Retrieve to view the readings previously stored in a data set on Vu+’s screen. The most
recently stored data is shown first.
1. While in the main menu use the up or down buttons ▲▼ to scroll until the cursor is pointing at
Review. Press the enter button ►to select.
2. Use the up and down buttons ▲▼ to scroll through the data sets, press enter ►when you locate
the correct data set. The most recently stored data is shown first.
3. Use the up and down buttons ▲▼ to scroll through stored data points. If more than 3 sensors
were logged, use the enter button ►to toggle to the second screen.
4. Press the stop button to return to the list of data sets then again to return to the main menu.
Bluetooth
Use to turn Bluetooth On. See page 19 for connecting via Bluetooth to a computer.
Scroll up or down the
list of data sets until
you find the right one.
▼
Snapshot
08/04/16
14:44:09
▲Data set 1 / 5
▼
Counting
►Review
Bluetooth
▲
▼
A 4.1 %
40.0 dBA
251 lx
▲ Sample 4 of 10
Scroll to view the samples
Use the enter button to toggle to
the next screen if more than 3
sensors were logged

EASYSENSE Vu+ Reference Manual DO255 (3)
16
Data Harvest Group Ltd.
System
1. While in the main menu use the up or down buttons ▲▼ to scroll until the cursor is pointing at
System. Press the enter button ►to select.
2. Use the up and down buttons ▲▼ to scroll the menu until the cursor is pointing to the appropriate
system menu option. Press the enter ► button to select.
Switch Off
Used to send Vu+ directly into low power (sleep mode), even when it’s connected to a USB port.
Press any button to ‘wake up’ the logger.
Note: While operating on battery power Vu+ automatically goes to low power (sleep) after a period of inactivity.
Sensor (changing range or turning on or off)
Note: These options are also available by pressing enter ► whilst in Meter mode.
Some built-in and plug in sensors have multiple ranges and the built-in sensors can be switched On or
Off the display e.g. Sound and Temperature switched off so only Light measurements are displayed.
Use the up or down buttons (▲▼) to move the cursor until it is
pointing at the appropriate sensor and press enter ►.
Use the ▲▼ buttons to move the cursor until it points at the
appropriate option (either Set range or Turn On or Off) and press
enter ►.
Note: If a sensor only has one range then only Turn Off will be available.
Set range
The cursor will indicate the current range selected.
Use the up or down buttons (▲▼) to scroll the list until the cursor is
pointing at the required range. Press enter ►to select the range.
Press the stop button to return to the sensor window.
Turning a built-in sensor ON or OFF the display
With the cursor pointing at Turn Off or On press enter ►.
Press the stop button to return to Meters.
▼
►Switch Off
Sensor
Delete Data
Use the scroll buttons to go up or
down the list of options
Review
Bluetooth
►System
▲
Full Reset
Language
Date Style
Decimals
Logger Name
About
Use enter to select an option
▼
3)Sound
►4)Light
5)Temperature
▲
▼
Internal Light
►0-1k lx
0-10k lx
▼
Light
►Set range
Turn Off
Light
Set range
►Turn Off
▲

EASYSENSE Vu+ Reference Manual DO255 (3)
17
Data Harvest Group Ltd.
Note: If you change a sensor’s range or turn it on/off via the logger while connected to a computer, it may be
necessary to select New in the software for these changes to be detected.
Delete Data
Select whether to delete all or just individual data sets.
Delete all –press ►to confirm your decision or stop to cancel.
Choose data - use the up or down buttons ▲▼ to scroll through the data sets and when you find
the data press enter ►to delete).
Full Reset
A full reset erases all data sets and returns the logger back to the factory default settings.
Note: A hard reset (see page 25) can be tried first if Vu+ simply stops responding, a hard reset won’t alter settings
or erase data.
A full reset will:
Erase all stored data sets.
Return the built-in sensors to their default range (Light - Indoor 1 k Lux,
Temperature - Celsius 0 to 50˚C).
Return the date format to DD-MM-YY.
Return decimals to On with a full stop format.
Return language to its default.
With the cursor pointing at Full Reset press the enter ► button to select.
Select the enter button ►to confirm the reset or stop to cancel and exit.
Once done press enter ►to return to the System menu.
Language
Use to alter the selected language.
With the cursor pointing at Language press the enter ► button to select.
The screen will show the language options. The cursor will indicate the current language selected.
If you wish to alter the choice use the scroll (▲▼) buttons to scroll the cursor until it is pointing at
the preferred language and press the enter ► button to select.
Note: If a System Full Reset is performed language will automatically return to its default.
Date Style
Use this option to alter the format of the date display (how you would like the date displayed) i.e. from
a European to USA date format (DD-MM-YY to MM-DD-YY). The actual time and date is set
automatically by the computers clock (see notes).
With the cursor pointing at Date Style press the enter ► button to select.
The cursor will indicate the current selection. If you wish to alter the choice use the ▲▼ buttons to
scroll the cursor until it is pointing at the preferred style and press the enter ► button to select.
▼
►Choose Data
Delete All
Counting
15/12/16
12:48:09
▲Data set 1 /10
The data set
is deleted
Press ►to exit
▼
Sensor
►Delete Data
Full Reset
▲

EASYSENSE Vu+ Reference Manual DO255 (3)
18
Data Harvest Group Ltd.
Notes:
Vu+’s internal clock is set automatically by the computers clock (date and time) each time it is connected to
the computer and the EasySense software is run. If the date or time on a data set is not correct, check the
date/time settings on your computer.
If a System Full Reset is performed the date format will automatically return to its default (DD-MM-YY).
Decimals
Use to switch decimals off and on, or to change the decimal format from a full stop to a comma.
With the cursor pointing at Decimals press the enter ► button to select.
Turn On or Off
With the cursor pointing at Turn Off / On press enter ►to alter the selection (from Off to On or
visa versa).
Format
To change the format of the decimal separator from a full stop to a comma, scroll to Format and
press enter ►. Scroll to the number displayed with a comma, press enter ►to select.
Press the stop button to return to System menu.
Note: If a System Full Reset is performed decimals will automatically return to its default - decimals
On (displayed) and the format as a full stop.
Logger Name
To change the name the logger displays while Bluetooth connected, select Logger Name. Use to
delete characters from the existing name and then scroll and select characters for the new name
(maximum of 11 characters). When you’ve finished scroll to (bottom row right) then enter ►.
Use the scroll buttons (▲▼) to go forward or back through the
alphabet / numbers / symbols on the keyboard.
Use enter ►to select / accept the symbol under the dark cursor.
Use to delete a character.
Move the cursor to the ‘tick’ symbol and press enter ►to accept the
entered name.
Move the cursor to the ‘cross’ symbol and press enter ►to leave
this screen with any characters entered to be rejected and ignored.
About
Shows the version number of the Vu+’s firmware, its serial number, its Bluetooth name, and the
Bluetooth firmware version number.
Using Vu+ connected via USB to a computer
Step 1:
Install the EasySense software, if it is not already on your computer. For details of how to install and
operate this program, please refer to the instructions provided for the EasySense software.
EASYSENSE Vu+ requires version 3.8 or above of the EasySense Windows PC software or version
1.03 of the Mac OSX software.
(The version number can be verified with Windows from About in the Help menu, or with Mac OSX from About
EasySense in the EasySense menu).
Step 2:
Connect Vu+ to the computer’s USB port using the USB cable supplied, it will automatically be
detected as a new device and the drivers will install
Name:
Da Vinci 32
abcdefghijklmnopqrstu
vwxyzABCDEFGHIJKLMNOP
QRSTUVWXYZ0123456789+
-*^%$@!_:\/?<=>.[]

EASYSENSE Vu+ Reference Manual DO255 (3)
19
Data Harvest Group Ltd.
Step 3:
Check that the LCD display on Vu+ is displaying the main menu (Meter, Pictogram, EasyLog, etc.).
Note: In most circumstances Vu+ will not communicate with the PC if it is taking samples. If the LCD screen
shows samples being taken, press the stop button to finish recording.
Open the EasySense software program.
Step 4:
The first time the EasySense program is opened a ‘Select Program Level’ window will automatically
open. Select a suitable user’s level.
Level 1 is aimed at ‘start’ level (e.g. up to 9 years old).
Level 2 is aimed at ‘mid’ level (e.g. 9 – 15 years old)
Level 3 is aimed at ‘exam’ level (e.g.15 years plus).
Step 5:
An Interface option window will open. Leave the Interface selection as EasySense Range and the
method of connection as USB Port and select OK. The program will save your selection so it will be
automatically configured when next used.
Step 6:
The Home window will open. Select one of the experiment modes e.g. EasyLog, Pictogram, Meters,
Snapshot, Counting or Timing.
Using Vu+ after the initial setup
Use the USB cable to connect Vu+ to the computer.
Open the EasySense software program.
Select one of the experiment modes e.g. EasyLog from the Home screen.
Using Vu+ connected via Bluetooth to a computer
When connecting to a Windows computer
V3.8 or later of the EasySense Windows software must be installed on the computer. An operating
system of Windows 7 or above is required.
Note: No pairing is required.
Connect a 2070 or 2071Bluetooth Smart USB adaptor to the USB port on the Windows
computer. The adaptor is a plug and play device whose drivers should install automatically*.
On Vu+ scroll to Bluetooth and ►to select.
Open the EasySense
software on the PC.
From File, Interface select Bluetooth and Network. OK.
Note: When first selected you may need to change Windows firewall
settings to allow network access for this app.
Select the connection status text top
right of the EasySense window.
Select the
Vu+’s name (as
displayed on its
screen) from
the list.
Bluetooth
Da Vinci
32

EASYSENSE Vu+ Reference Manual DO255 (3)
20
Data Harvest Group Ltd.
The connection status will change to show that it is ‘Controlling xx or Viewing xx the logger.
A link symbol on Vu+’s screen will indicate connection to a computer.
When you’ve finished select the connection status icon in the EasySense software to disconnect, then
stop and enter ►to confirm on Vu+.
* If auto install fails, download and unzip the drivers for the Bluetooth USB adaptor (Product 2070 or 2071) from
the Data Harvest website. Open Device Manager, right click on the entry for the dongle (typically listed under
Other devices) and select Update drivers. Select to ‘Browse my computer’ (install manually), locate and select the
BLED112 directory. When installed the adaptor will be listed under the Ports (COM & LPT) section.
When connecting to a iPad or Android device
An iPad will need to support Bluetooth Low Energy (BLE) also known as Smart or 4 (iPad 3 or later or
any iPad Mini). V1.10 or later of the EasySense iPad software must be installed.
An Android will need to support Bluetooth Low Energy (BLE) / Smart –OS 4.4 or later. V1.05 or later
of the EasySense Android software must be installed.
Note: No pairing is required.
Check in Settings on the device that Bluetooth is On.
Select Bluetooth on Vu+.
Start the EasySense software.
On an iPad tap on the ‘Not Connected’ text bottom right of the screen.
On the Android select the connect icon , top right of the screen
Select the Vu+’s name from the list.
The status will change to show that it is ‘Controlling xx or Viewing xx’.
When you’ve finished select the connection status icon in the EasySense software to disconnect, then
stop and enter ►to confirm on Vu+.
The EasySense software overview
Home is the main navigation screen, which contains the icons for all of EASYSENSE Vu+’s
logging options. The experiment options and the complexity of toolbars and functions are
altered by the user level selected.
EasyLog
EasyLog will open pre-set to record sensor values continuously as a line graph until
stopped.
A logging wizard will open, deselect the tick next to any sensors from which readings are not required
and click on Finish.
Click on the Start/Stop icon to begin recording.
Logging will start with a time span of 30 seconds and when this has elapsed the time will double
automatically. This will continue until the recording is stopped by clicking on the Start/Stop icon.
Meters
The Meters window gives an introduction to sensors and how they respond to change. Up
to four section displays can be open at any one time and they can be any combination of
sensors and displays.