PHYWE Cobra SMARTsense User manual

1
www.phywe.com, © All rights reserved 12924-01 / 2621
Operating
instructions
Cobra SMARTsense Colorimeter & Turbidity
12924-01
PHYWE Systeme GmbH & Co. KG
Robert-Bosch-Breite 10
D–37079 Göttingen
Telefon [phone]
Fax [phone]
E-mail [email protected]
Internet www.phywe.com
The unit complies
with the applicable
EC-guidelines
Fig. 1: 12924-01 Cobra SMARTsense Colorimter & Turbidity
TABLE OF CONTENTS
1SAFETY PRECAUTIONS
2PURPOSE AND CHARACTERISTICS
3FUNCTIONAL AND OPERATING ELEMENTS
4NOTES ON OPERATION
5HANDLING
6TECHNICAL DATA
7SCOPE OF DELIVERY
8ACCESSORIES
9 CONFORMITY
10 DISPOSAL
1 SAFETY PRECAUTIONS
Carefully read these operating instructions completely
before operating this instrument. This is necessary to
avoid damage to it, as well as for user-safety.
Only use the instrument for the purpose for which it was
designed.
Only use the instrument in dry rooms in which there is no
risk of explosion.
Protect the instrument from dust, moisture and vapours.
Use a slightly moist lint-free cloth to clean the instrument.
Do not use aggressive cleaning agents or solvents.
Take care that no liquid penetrates in through the hous-
ing openings, as such penetration would result in dam-
age to Sensor.
Do not open the unit.
2 PURPOSE AND CHARACTERISTICS
The Cobra4 Sensor-Unit Colorimeter is used for measuring
the absorption or transmission of light. For this purpose, there
are five wavelengths: red: 650 nm, orange: 610 nm, green:
520 nm, blue 470 nm and violet 430 nm. The measured val-
ues are transferred to a terminal device, e.g. to a table com-
puter, smartphone, etc., via Bluetooth or USB.
Caution!

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3 FUNCTIONAL AND OPERATING ELEMENTS
3.1 Operating elements
The sensor has an on-button and two LEDs for indicating the
Bluetooth and battery charge status.
On-button
To switch the sensor on and off in Bluetooth mode, the power
button must be pressed for longer than 3s. If the sensor is to
be connected via USB, it is not necessary to press the power
button. The button must be pressed briefly to advance the
display values
Bluetooth-LED
Flashing red every 2 seconds
Not connected
Flashing green every 2 seconds
Connected to the ter-
minal device
Flashing green every 4 seconds
Running measurement
Battery charge LED
Flashing red every 2 seconds
Low battery
Illuminated red
Active charging process
Illuminated red
Charging process
completed
Display unit
The high-contrast OLED display indicates the LED color,
wavelength and the transmission, absorption or turbidity val-
ue.
3.2 Functional elements
The cuvette compartment is located under the lid that can be
folded up.
Fig. 2: Functional elements
Fig. 3: Lighting direction of the LEDs
3.3 USB port
The battery, which is permanently installed in the sensor, is
charged via the type C USB port. Furthermore, communica-
tion with a computer takes place via this interface.
.
4 NOTES ON OPERATION
This device fulfils all of the technical requirements that are
compiled in current EC guidelines. The characteristics of this
product qualify it for the CE mark.
The individual connecting leads are each not to be longer
than 2 m.
The instrument can be so influenced by electrostatic charges
and other electromagnetic phenomena (HF, bursts, indirect
lightning discharges) that it no longer works within the given
specifications. Carry out the following measures to reduce or
eliminate the effect of such disturbance: Ensure potential
equalization at the PC (especially with Laptops). Use screen-
ing. Do not operate high frequency emitters (e.g. radio
equipment or mobile radiotelephones) in the immediate vicini-
ty. When a total failure of the instrument occurs, unplug it and
plug it back in again for a reset.
5 HANDLING
This section describes the start-up of the sensor and the re-
cording of measurement data. Please read this section thor-
oughly in order to avoid failures or operating errors.
5.1 Charging process
Use a USB-C cable to connect the sensor to a computer or
USB charger (not included).
During the charging process, the battery charge LED lights
up red. When the charging process is complete, the battery
charge LED lights up green. The charging time for a com-
pletely discharged battery is 3 hours maximum.
Disconnect the charger at the latest four hours af-
ter the completion of the charging process. Other-
wise, the service life of the battery may be nega-
tively affected.
5.2 Start-up
Switch on the sensor by pressing the power button for more
than 3s. Now the Bluetooth LED flashes red. Start the soft-
ware and select the sensor.
If the sensor is to be used via the USB interface, it does not
need to be switched on. The sensor is connected directly to
the end device using the supplied USB cable.
There is a 9-digit code
printed below the display
(Fig.4). The last 4 digits of
the code are displayed as
the sensor name in the
software (Fig.3). This ena-
bles the precise assign-
ment of the sensors within
the software.
Fig. 4
Fig. 5
Lid
Cuvette compartment
Display unit
Lighting direction of the LEDs

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Selection of the sensor via the Bluetooth interface
Make sure that the Bluetooth interface is activated on the
terminal device (PC/Tablet/Smartphone) and that the soft-
ware is allowed to access the interface.
After the sensor has been selected in the software, the LED
flashes green to indicate that the connection has been estab-
lished correctly. After the sensor has been coupled with the
software, the sensor is no longer visible to other users in the
software, and therefore can no longer be selected.
If the sensor is switched on and not connected, it switches off
automatically after 5 minutes.
Positioning the cuvette
Insert the cuvette directly into the cuvette compartment that is
intended for this purpose. The cuvette has two different types
of sides: two opposite sides are transparent, and the other
two are opaque or serrated. The transparent sides must be
aligned in the lighting direction (Fig. 3). Then, close the cover
and ensure that you can hear it lock.
Measurement
For a conclusive measurement, it is important that the cu-
vette is clean, i.e. free from dust and fingerprints. The cu-
vettes can be cleaned rather well with kitchen paper (paper
towel).
Fill your sample into the cuvette and ensure that it is free
from air bubbles. Insert the cuvette as described here-
inabove.
The light of the five wavelengths will be emitted continuously
one after the other and the absorption will be measured.
The sensor has 5 channels (5 wavelengths) and 2 operating
modes:
[T] Transmission (%): Part of the light that passes through the
sample.
[A] Absorbance (Abs): The absorbance A is calculated based
on the intensity without the sample (I0) and based on the in-
tensity with the sample (I)
   

It is a unit-free measure.
Turbidity (NTU): The fraction of light scattered by the undis-
solved particles in the sample (nethelometry). A red LED with
λ= 650 nm serves as the light source
6 TECHNICAL DATA
Operating temperature range: 5 - 40°C
Rel. humidity < 80%
Measuring range: 5 Wave length (LEDs)
Red
Orange:
Green:
Blue:
Violet:
Transmission T
Range
Resolution
650 nm
611 nm
520 nm
470 nm
430 nm
0…100 %
0.1 %
Absorbance A
Range
Resolution
Accuracy
Turbidity NTU
Range
Resolution
Accuracy
0...3
0.01
±0,03
0…400
0.1
±5%
Max. date rate
Battery capacity
Max. wireless range (open field)
1 Hz
1000 mAh
30 m
Dimensions (length x width x height)
100 x 57 x 55 mm
Weight
103 g
7 SCOPE OF DELIVERY
The extent of delivery is as follows
Cobra SMARTsense Colorimeter 12924-01
USB connecting cable type C 07935-00
Macro-cuvettes, PS, 4 ml
Operating instructions
8 ACCESSORIES
The following accessories are available:
Cobra SMARTlink 12999-99
USB-charger 07932-99
Macro-cuvettes, PS, 4 ml, 100 pcs 35663-10
USB-Bluetooth-Adapter 07936-00
Software measureLAB 14580-61
Free measureApp available from supplier portals
iOS
Android
Windows
9 CONFORMITY
PHYWE Systeme GmbH & Co.KG hereby
declares that the radio system type 12924-
01 complies with the 2014/53/EU directive.
The complete text of the EC Declaration of
Conformity is available at the following In-
ternet address:
www.phywe.com/en/ec-declaration

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10 DISPOSAL
The packaging mainly consists of environmentally-friendly
materials that should be returned to the local recycling sta-
tions.
PHYWE Systeme GmbH & Co. KG
Abteilung Kundendienst
Robert-Bosch-Breite 10
D–37079 Göttingen
Telefon [phone]
Fax [phone]
Do not dispose of this product with normal
household waste. If this unit needs to be
disposed of, please return it to the address
that is stated below for proper disposal