Opsytec UVpad E User manual

UVpad E
Manual
Version: 1.1.2
Opsytec Dr. Gröbel GmbH
Am Hardtwald 6-8
76275 Ettlingen
Tel.: 07243 / 94783 - 50
Fax: 07243 / 94 83 - 65
[e-mail]

1 Content 2
1 Content
1Content................................................................................................................................. 2
2Change history..................................................................................................................... 3
3Symbols Overview .............................................................................................................. 3
4Function Overview.............................................................................................................. 4
5Technical Data..................................................................................................................... 5
5.1 General technical data ............................................................................................... 5
5.2 Radiometric measurements....................................................................................... 5
5.3 spectral ranges........................................................................................................... 5
USB........................................................................................................................... 6
5.4 / hardware-software-requirements............................................................................. 6
5.5 Effect related measurements ..................................................................................... 6
6Intended Use........................................................................................................................ 7
7Conventional Use ................................................................................................................ 7
8Important Information ......................................................................................................... 8
9Operation............................................................................................................................. 9
9.1 Switching the device on and off................................................................................ 9
9.2 Standby Menu ......................................................................................................... 10
9.2.1 Start Measurement............................................................................................... 11
9.2.2 Start manual dark measurement .......................................................................... 13
9.2.3 Show last Measurement....................................................................................... 15
9.2.4 Setting integration time during measurements.................................................... 15
9.2.5 Recording time .................................................................................................... 17
9.2.6 Settings ................................................................................................................ 17
9.2.7 Information.......................................................................................................... 17
9.3 Settings.................................................................................................................... 18
9.3.1 Sensitivity............................................................................................................ 18
9.3.2 Averaging ............................................................................................................ 19
9.3.3 Effective Function* ............................................................................................. 19
9.3.4 Language ............................................................................................................. 21
9.3.5 Date / Time.......................................................................................................... 21
9.3.6 Factory Settings................................................................................................... 21
10 Data Export / PC-Software................................................................................................ 22
10.1 Installation............................................................................................................... 22
10.2 Connecting with the PC........................................................................................... 22
10.3 Viewer Software...................................................................................................... 23
10.4 Export of measurements.......................................................................................... 25
10.5 Displaying and comparing Measurements.............................................................. 26
10.6 Displaying the Irradiance profile............................................................................. 26
10.7 Deleting Measurements........................................................................................... 27
11 Remote control / Live measurement.................................................................................. 28
12 Notes for optimal measurement results............................................................................. 31
12.1 The UVpad E displays „MAX“............................................................................... 31
12.2 The UVpad E displays too little irradiance values.................................................. 31
12.3 The UVpad E displays too high or too low UVC Values ....................................... 31
12.4 The UVpad E displays “ - “..................................................................................... 32
12.5 The measured value is not reproducible.................................................................. 32
13 Cleaning, Maintenance & Troubleshooting....................................................................... 33
13.1 Calibration............................................................................................................... 33
13.2 Cleaning .................................................................................................................. 33

2 Change history 3
13.3 Battery Change........................................................................................................ 34
13.4 Troubleshooting ...................................................................................................... 35
14 Declaration of Conformity................................................................................................. 36
15 Notes.................................................................................................................................. 37
2 Change history
Date
Version
Changed by
Comment
01.04.2015
1.0.7
Paravia
first Version
29.09.2015
1.0.8
Paravia
setting “fixed (Res. 0.01)” added
23.03.2017
1.0.9
Uhl
Upgrade measurement time;
UVA/VIS range adjusted
10.11.2017
1.1.0
Paravia
Manual dark measurement
10.01.2018
1.1.1
Uhl
Remote control / LIVE measurement
19.02.2018
1.1.2
Paravia
Editorial modifications
3 Symbols Overview
Meaning:
Failure to observe the mentioned instructions can re-
sult in an injury of the user.
Meaning:
Failure to observe the mentioned instructions can re-
sult in a damage of the device.
Meaning:
Instructions are to be observed for the regular opera-
tion.
* Optional functions, not available for every UVpad E

4 Function Overview 4
4 Function Overview
The UVpad E combines the benefits of the spectral measuring technology with a handheld and
easy to operate radiometer. Use the spectroradiometer UVpad E for an accurate measurement
of the UV irradiance and for comparisons of different UV lamps and UV LEDs. 512 photodi-
odes measure the spectrum in the wavelength range of 200 – 440 nm. The categorization in
UVA, UVB and UVC is taken according to international standards and traceable. The calibra-
tion to only one light source is omitted.
During the measurement, the spectrum is shown on the graphic display. The irradiances for
UVA, UVB, UVC and VIS are available by the click of a button. In the background, the spec-
trum is already recorded. While measuring, the dose and the chronological irradiance sequence
can additionally be documented. Spectra and measurement data can be exported and evaluated
with the provided software.
The UVpad E offers these functions/features:
Spectral measurements:
•Real-time of the spectrum
•Real-time of irradiance
Radiometric measurements:
•Spectrum at max irradiance
•Irradiance (UVA, UVB, UVC, VIS)
•Profile of irradiance (UVA, UVB, UVC, VIS)
•Dose of irradiance (UVA, UVB, UVC, VIS)
Measurements related to cause and effects:
•Photo initiator spectrums (optional)
•Sensitivity functions of broadband radiometers (optional)

5 Technical Data 5
5 Technical Data
5.1 General technical data
Size (L x W x H)
160 x 100 x 20 mm³
Weight
~500 g
Power
battery powered, 3 x CR2032
Max. operational temperature
60°C
Display
graphical, 128 x 64 px
Optically active surface
Diameter: 10 mm
Optically active surface position
external sensor
internal memory
50 measurements with export option
5.2 Radiometric measurements
Spectral range
200 - 440 nm ±3nm
Spectral bandwidth
~ 2 nm
Irradiance measurement range
2 - 15000 mW/cm²
Irradiance dose measurement range
1 mJ/cm² - 600 J/cm²
Irradiance profile
4 spectral ranges (UVA, UVB, UVC, VIS)
Measurement time
0 to 120 s, adjustable to ~ (rounded)
120 s (4 Hz)
48 s (10 Hz)
24 s (20 Hz)
10 s (50 Hz)
5 s (100 Hz)
Time resolution
10 ms to 250 ms, adjustable
Sampling rate
10 ms - 1000 ms,
automatically set
storage rate for export: see time resolution
Averaging
1 - 32
Gain
normal / LowGain for 10 to 30 ms
Cosine correction
yes
Calibration
yes, traceable to PTB / NIST
frequency of recalibration, recommended
12 months
5.3 spectral ranges
according
CIE
UV-C
240 - 280 nm
UV-B
280 - 315 nm
UV-A
315 - 400 nm
VIS
400 - 480 nm
based customer specification or CIE
optional

5 Technical Data 6
5.4 USB / hardware-software-requirements
USB connector
MiniUSB
PC requirements
min Intel CORE i3, 2 GB Ram, >40 Gb HDD
operating system
Windows 7 with .NET Framework > 4.0
5.5 Effect related measurements
Photoinitiator / Sensitivity curve
optional

6 Intended Use 7
6 Intended Use
The UVpad E determines the irradiance in the UV and VIS spectral range and indicates
these on the integrated display. Typical Applications:
- Measurement of UV-LEDs and ultraviolet lamps
- UV dose measurements
- Universal irradiance measurement
- GMP and IQ/OQ documentation
7 Conventional Use
The UVpad E is solely intended for the determination and visualization of irradiances, which are
generated in UV curing systems.
The UVpad E is battery operated and suitable for usage with lithium batteries, type CR2032. In
case other batteries, than the supplied ones, are used, an operating range of up to 70 °C has to be
observed. Spare batteries are to be obtained from your supplier.
Operation only allowed in dry environments. The assembly position is arbitrary.
When using the UVpad E, light and UV radiation can be reflected and distributed at the housing.
Appropriate protection measures for the protection against radiation need to be applied, if neces-
sary. Note: The UVpad E itself does not emit any hazardous radiation.
The housing, with the exception of the battery compartment, must not be opened by the user.
The optically active surface must not be touched.
Gloves need to be worn when cleaning the optically active surface.
The UVpad E is a highly sensitive optical measurement device. It must not be exposed to shocks.
Any other usage than the one described above leads to a damage of the product. Furthermore, this
involves risks, such as short-circuits, fire and electric shocks. The entire device must not be modi-
fied and/or remodeled! The safety indications are to be observed without fail.
optically active surface

8 Important Information 8
8 Important Information
Please read the instruction manual completely before start-up and operation.
The latest version of the instruction manual applies.
Skin oil and contamination are absorbing in the UV spectral range. Finger
prints / contamination on the optically active surface
are to be avoided. If
necessary, clean thoroughly with Isopropanol. Use gloves when cleaning.
The UVpad E is calibrated.
ATTENTION: Opening of the housing (except for the battery compartment)
leads to a loss of calibration.
Only use batteries, which are suitable for up to 60 °C.
The UVpad E
is a highly sensitive optical measurement device. It must not be
exposed to shocks.
When using the UVpad E, light and UV radiation can be reflected and distributed
at the housing. Appropriate protection measures for the protection against radi-
ation need to be applied, if necessary.
The maximum housing temperature of the sensor can reach > 60 °C and there
is the risk of skin burns on contact. Please allow for the UVpad E
to cool
down and use protective gloves to avoid skin burns.

9 Operation 9
9 Operation
The UVpad E is operated via four keys. These are arranged on the front panel below the dis-
play. The keys and the functions are illustrated as follows:
Key
Function

Back / Cancel / Off

Down

Up

Confirm / Continue
The keys and are additionally available as softkeys. Softkey functions are directly dis-
played above the key. Example:
9.1 Switching the device on and off
The UVpad E is activated via any key. During the initialization (ca. 2s), the welcome screen is
displayed:
After the initialization, the standby menu is displayed:

9 Operation 10
In the standby menu, the UVpad E is switched off via the key .
After 2 minutes of not using the UVpad E
, the device switches off
automatically.
9.2 Standby Menu
Via the standby menu, all functions of the UVpad E are available for you. These are:
•Start measurement
•Show last measurement
•Scope measurement
•Settings
•Information
In the standby menu and in all other menus, select the active menu item via the keys and .
Confirm the active menu item with the key . With , you return to the previous menu with-
out saving any changes.
The selected menu item is highlighted in black and displayed inverted. If several settings are
selectable, then the selected setting is marked with. Example:
In this example, the language “English” is set.
“German” is selected, but not set.
With the key -key, the setting is accepted
and the language is being changed.

9 Operation 11
9.2.1 Start Measurement
From the standby menu, a measurement is
started with the key .
First, the spectrum is displayed.
Use ‘”Auto” mode to get the best integration
time or, in fixed mode use and keys to
adjust integration time.
Notes:
The optimal integration time, gain (L/H) and the saturation of the measurement range are dis-
played at the upper display edge. The integration time is displayed in ms. Example:
T 100: The integration time is 100 ms
Hint:
For optimum measurement results, the measuring range should be fully con-
trolled. Very good measuring results are achieved when the measuring range
is at least 50%.
The modulation is linear to the set integration time. Example:
55/5000
T10 M20%: Measuring range is 20% used => Bad
T40 M80%: Measuring range is 80% used => Very good
Switch between spectral and radiometric view
by pressing .
If storing measurements is selected via menu
„recording time“, the measurement is auto-
matically recorded if the radiometric view is
shown.

9 Operation 12
Stop the measurement by pressing the key for at least 0.5s.
The measurement results are displayed automatically. For a better overview, these are parti-
tioned to four screens.
1. Irradiance (only when viewing saved measurements)
2. Dose of irradiance (UVA, UVB, UVC, VIS)
3. Spectrum at maximum irradiance (only when viewing saved measurements)
4. Irradiance profile over the duration of the measurement
These can be displayed with the keys or .
First, the dose of irradiance is displayed.
With the key , the irradiance profile for
UVA, UVB, UVC, VIS and total are dis-
played.
With the key , you are respectively being redirected to the previous menu. With the keys 
or you can return to the standby screen.
Note:
If the irradiance is too low for the measurement range, then the UVpad E dis-
plays no measured values. The irradiance and the dosage values are then dis-
played with “-“.

9 Operation 13
9.2.2 Start manual dark measurement
For manual darkness measurement, select the menu item "dark+radiometric" under Settings,
Measurement mode. If your UVpad E is equipped with several effective functions, manual
dark measurement may be available for further effective functions.
Note:
Manual darkness measurement is only active in the sensitivity mode "fixed".
Therefore, set a fixed integration time!
If the darkness measurement is not done for the
integration time, the UVpad
E will not display any values. In this case the irradiance and dose values are
displayed with "-".
Manual darkness measurement is important if the irradiance at the end of the
short-wave measuring range (e. g. 240 nm) is not "zero", otherwise the meas-
ured values are too low.
For the measurement with manual dark measurement, start the measurement and set the
integration time with the button or .
1. Set the correct integration time with
the button or .
2. Start irradiance display with key or
start dark measurement with key .
3. Cover the sensor, wait 1-2 seconds or
3-4 measurements and press to
switch to the irradiance display.

9 Operation 14
4. The irradiance is displayed.
5. To save the measurement, press the 
button for at least two seconds. After
release, the irradiation values are dis-
played.
Note:
The irradiance is not displayed if the darkness
measurement is not done or the integration
time has been changed.
The note DARK is displayed.
Note:
The optimum integration time, the gain (L/H) and the control of the measuring range are dis-
played at the top of the display. The integration time is displayed in ms.
Example: T 100: The integration time is 100 ms

9 Operation 15
9.2.3 Show last Measurement
In the standby menu select the item “Show last measurement” to display the last measurement.
Select the values from the list of measurements, which you want to display.
The navigation in the display screens is taken out, as described in chapter 9.2.1.
Select the measurement with the buttons 
and . Confirm with . Return with .
If 50 measurements have already been saved, then a note comes up prior to a
new measurement,
stating that the memory is full and that the measurement
can be taken out without saving it, or that alternatively, the oldest measure-
ment result is being overwritten.
See Delete all Measurements
See Data Export
Delete all measurements:
The internal memory can be deleted directly on the UVpad E or via a PC. For this purpose,
please select the prior menu item “Clear memory”.
Confirm with Yes (). Return with or .
9.2.4 Setting integration time during measurements
If using fixed integration time, during a measurement you can set up the sensitivity of the
UVpad E with the keys and . Select for a lower sensitivity and for a higher sensitiv-
ity. The sensitivity is not saved.

9 Operation 16
Select a higher sensitivity (), if the spectrum is noisy or doe
s not fill the
display completely.
Select a lower sensitivity (
), if single lines of the spectrum are cut on top.
The measurement range is then exceeded and is shown in the display MAX.
Examples:
Sensitivity too low
Sensitivity correct
Sensitivity too high
Risk of UV radiation.
Protect your skin and eyes during the work at and with UV radiation sources.

9 Operation 17
9.2.5 Recording time
If storing measurements is selected via settings (120 s to 5 s), the measurement is automatical-
ly recorded if the radiometric view is shown.
Set recording time via the buttons
and . Confirm with or cancel the set-
ting with .
9.2.6 Settings
In the menu „Settings“, you can set up the sensitivity, the effective function, the menu lan-
guage and the date / time. Furthermore, you can reset the UVpad E to the factory settings.
9.2.7 Information
Select the menu item “Information” from the standby menu, to display the serial number, the
firmware version, as well as the date of calibration.
With any key, you are being redirected to the
menu.

9 Operation 18
9.3 Settings
By selecting the menu item „Settings“, you are being directed to the settings menu of the
UVpad E.
In this menu, the following functions are
available:
-Settings of the sensitivity
-Selection of the effective function
-Language settings
-Settings of date and time
-Reset to factory settings
9.3.1 Sensitivity
The UVpad E adjusts the sensitivity automatically, in order to ensure the optimal signal-noise
ratio. The sensitivity is hereby set via the sampling rate. With high irradiances, the sampling
rate is increased in order to not exceed the measurement range. With low irradiances the sam-
pling rate is decreased. As a result in belt conveyor systems erroneous measurements may be
recorded. Please follow the instructions on the display and / or set a fixed integration time as
sensitivity. Five pre-defined sensitivities are available.
In the setting „automatically“, the UVpad E
adjusts the sensitivity, once a minimum irra-
diance is existent. This setting is suitable for
most applications.
In the setting „low“, the sampling rate is al-
ways between 10 ms and 100ms. The UVpad
E can measure UV-systems with a very high
irradiance or significant irradiance modifica-
tions (e.g. with shutter operation or with very
high tape speed).
In the setting „high“, the UVpad E measures
with a sampling rate of 1000 ms. This is ideal
for applications with a low irradiance.
In the settings „fixed“ and „fixed (Res 0.01)“,
the integration time is predetermined. The
UVpad E can be used optimally for known
systems with shutters
Note:
In irradiation profile resolution is enhanced
from 1 mW/cm² to 0.01 mW/ m² for the set-
tings "high" and "Fixed (Res. 0.01). The
measuring range then is 0 .. 650 mW/cm².

9 Operation 19
The menu item “Sample rate” is displayed, if
you have selected a fixed sensitivity.
The integration time is set via the buttons
and . Confirm with or cancel the set-
ting with .
Pressing on 10 ms setting switches to low sensitivity.
This reduces sensitivity by factor of 5.
9.3.2 Averaging
The UVpad E can calculate the irradiance from the moving average. Hereby are signal-to-noise
ratio, and thus measurement accuracy can be enhanced.
For integration times below 500 ms we recommend averaging over 16-32 measurements, while
for integration times over 500 ms smaller settings may be useful.
9.3.3 Effective Function*
Effective functions serve for the process-oriented measurement. This is often also called effect-
related or actinic measurement.
In that case, effective functions can be for example:
-Absorption spectrums of photo initiators
-Spectral sensitivity function
-Filter function for instrument comparisons
In the Eff. function menu, the desired function can be selected using the -key or -key and
confirmed with the -key.
Select „radiometric“, for traceable and inter-
nationally comparable measurements.
Select an effective function for a process-
oriented measurement and a targeted system
optimization. The international comparability
is not given.

9 Operation 20
If measurements are taken out effect-related, then this is displayed in the irradiance and in the
dosage display by the addition “(ef)” for “effective”. Radiometric and effect-related measure-
ments are illustrated subsequently.
Example: radiometric
Example: with effective function
The function “Effective Function” is only available, if your UVpad E has
been programmed with a customized effective function at factory.