KERN Optics ORA 80 BE User manual

1
6
5
3
2
4
ORA_80BE-BA-d-1410 4
2Gerätebeschreibung
1. Prismenabdeckung
2. Prismenfläche
3. Optische Röhre mit Griff
4. Okular mit Einstellring des Diopters
5. Messbereich Verstellrad
6. Einstellschraube
7. Aufbewahrungsbox
8. Pipette
9. Refraktometer
10. Destilliertes Wasser / Kalibrierflüssigkeit
11. Werkzeug
12. Reinigungstuch
2
4
5
3
1
12
11
10
9
8
7
6
6
ORA_80BE-BA-d-1410 4
2Gerätebeschreibung
1. Prismenabdeckung
2. Prismenfläche
3. Optische Röhre mit Griff
4. Okular mit Einstellring des Diopters
5. Messbereich Verstellrad
6. Einstellschraube
7. Aufbewahrungsbox
8. Pipette
9. Refraktometer
10. Destilliertes Wasser / Kalibrierflüssigkeit
11. Werkzeug
12. Reinigungstuch
2
4
5
3
1
12
11
10
9
8
7
6
6
ORA_80BE-BA-d-1410
KERN & Sohn GmbH
Ziegelei 1
D-72336 Balingen
E-Mail: info@kern-
sohn.com
Tel: +49-[0]7433-9933-0
Fax: +49-[0]7433-9933-
149
Internet: www.kern-
sohn.com
Betriebsanleitung
Analoges Refraktometer
KERN ORA 80 BE Analog Expert
2-fach Skala Brix
Version 1.0
12/2014
CONTENTS
1 Technical data.................................................................................................1
2 Description .....................................................................................................2
3 General information .......................................................................................3
3.1 Intended use...................................................................................................3
3.2 Warranty .........................................................................................................3
4 Basic safety information ................................................................................4
4.1 Follow the instructions in the operating manual ..........................................4
4.2 Warning.......................................................................................................4-5
5 Supplied items................................................................................................5
6 Before the first use.........................................................................................6
7 Use/measurement.........................................................................................6
7.1 Zero point calibration ................................................................................. 7-8
7.2 Additional advice ............................................................................................9
7.3 Measuring procedure ............................................................................... 9-10
8 Cleaning and maintenance.......................................................................... 11
9 Storage......................................................................................................... 11
10 Service ......................................................................................................... 11
11 Disposal ....................................................................................................... 12
12 Additional information................................................................................. 12
13 Brix to refractive index (nD)conversion table............................................ 13
14 Annex ........................................................................................................... 14
3 ORA_80BE-BA-d-1410
1Technische Daten
Mo d e l le
K E R N
Messbereic h
und
S k alen
S k alen
teilung
Ge na uig k eit
Abmessungen
Produkt
Nettogewicht
O R A
8 0 B E
B rix: 0 50%
Brix : 50
80%
0,5% Brix
0,5% Brix
180x40x40mm
0,400kg
Beispiel der Skala für den ORA 80 BE
1. Technische Daten
Models
KERN
Measuring
range and
Scales
Scale
graduations
Accuracy
Dimensions
Product Net weight
ORA 80BE Brix: 0-50%
Brix: 50-80% 0,5 % Brix 0,5 % Brix 180x40x40mm 0,400kg
Operating manual
Analogue refractometer
KERN & Sohn GmbH
KERN ORA 80 BE Analogue Expert
2x Brix scale
Ziegelei 1
D-72336 Balingen
E-Mail: [e-mail]
Tel: +49-[0]7433-9933-0
Fax: +49-[0]7433-9933-149
Internet: www.kern-sohn.com
3. General information
3.1 Intended use
The refractometer is a measuring instrument for determining the refractive index of
transparent substances in liquid or in some cases also in the solid state. It is used
to observe the behaviour of light as it passes from a prism with known properties
to the substance being tested.
Use of the refractometer for other purposes is contrary to its intended use and
may be hazardous. The manufacturer shall not be liable for any damages caused by
improper use.
3.2 Warranty
The warranty shall be void in the event of:
▸ Failure to observe the instructions in the operating manual
▸ Use for purposes other than those described
▸ Modifications or opening the device housing
▸ Mechanical damage and/or damage resulting from media,
liquids, natural wear and tear
2. Description
1. Prism cover
2. Prism surface
3. Optical tubes with grip
4. Eyepiece with diopter adjustment ring
5. Adjusting wheel measuring range
6. Adjusting screw
Version 1.1 05/2016
4. Basic safety information
4.1 Follow the instructions in the operating manual
▸ Carefully read through the operating manual even if you have prior
experience with KERN refractometers.
▸ Every language version includes a non-authoritative translation.
The original German document is the definitive version.
4.2 Warning
▸ Do not let acids come into contact with skin or eyes. If acid comes into contact
with skin, flush with copious amounts of water. Shower if larger areas of skin are
affected.
▸ If acid comes into contact with eyes, keep the eyelid open and flush the eye with
running lukewarm water from the outer corner to the inner corner. Flush eyes for
at least 15 minutes. Then consult a doctor or ophthalmologist immediately.
▸ Thoroughly clean the refractometer aer each use.
▸ The refractometer must not be exposed to extreme temperatures, high
mechanical stresses, strong direct sunlight or high humidity.
▸ This refractometer is not a toy. Keep out of reach of children.
▸ Make sure that you will not be hit by anything else while you are using the
refractometer, as this could cause serious eye injuries
▸ The rubber eyeshade may cause irritation when in prolonged contact with the
skin. If this happens, consult your doctor.
▸ Do not touch the lenses with your fingers.
5. Supplied items
Aer unpacking and before using the device for the first time, check that all
listed parts have been supplied. Replace damaged or faulty parts immediately
and do not put them into operation.
6. Before the first use
Remove the protective film (if present)from the prism surface [2]and check that
the rubber eye-cup [4]is fitted correctly.
7. Use/measurement
The refractometer can be used to quickly and accurately determine the refractive
index of transparent substances, liquid or solid ones. To ensure correct measure-
ment, the measuring device should be adjusted before measurements are carried
out. Please make sure your hands are dry before handling the measuring device.
The measuring instrument has two measuring ranges. To switch between the two
measuring ranges rotate the housing ring [5]between the eyepiece [4]and the
optical tube [3].
Example scale on
ORA 80 BE
GB
7. Storage box
8. Pipette
9. Refractometer
10. Calibration liquid
(Distilled water)
11. Adjustment tool
12. Cleaning cloth
▸ Refractometer
▸ Storage box
▸ Pipette
▸ Adjustment tool
▸ Cleaning cloth
▸ Calibration liquid (Distilled water)

7
14
8
9
10
12
11
13
7.1 Zero point calibration
▸ Hold up the refractometer against a sufficiently bright light source and look through
the eyepiece [4], holding the eyepiece closely against your eye/glasses.
▸ Rotate the eyepiece [4]to adjust it for your eyesight, until you can see the scale
sharply.
▸ Open the prism cover [1].
▸ Thoroughly clean the prism [2]and the underside of the prism cover [1]using a so
cloth or so paper (with alcohol if necessary)and wipe dry. Water should only ever
be applied to the measuring prism, not to other parts of the device.
▸ Now apply a few drops of the calibration liquid [10]onto the prism surface [2].
▸ close the prism cover [1]. The amount of fluid should be sufficient to moisten most of
the prism surface. There should not be any air bubbles between the measuring prism
[2]and prism cover [1].
▸ Wait about 30 seconds to allow the temperatures of the test fluid and prism to
equalise.
▸ Look through the eyepiece [4]while pointing the refractometer‘s prism surface [2]at
a bright light source.
▸ Through the eyepiece [4], you will see a bright and a blue field. The boundary line
between them shows the refractive index value on the scale which is also visible
through the eyepiece [4].
▸ With the aid of the supplied adjustment tool [11]to turn the adjustment screw [3]
at the side of the prism surface [2]the scale can be adjusted so that the
measuring device is optimally set up by moving the boundary line upwards or
downwards.
Calibration value: 0 % (Brix)
▸ For refractometers without automatic temperature compensation (ATC): Convert the
measured value to take account of the deviation in room and sample
temperature from +20 °C. (See the table at the end of this manual, Point 14.)
▸ Repeat step 4 (cleaning).
Important!
The ambient/room temperature and the sample temperature influence
the refractometer measuring result.
The scales are designed for an ambient temperature of +20 °C!
If the measurements are carried out at a temperature other than +20
°C, the results must be correspondingly corrected.
A correction table can be found in the annex, Point 14.
7.2 Additional advice
It is important that the samples being measured are representative samples. Meas-
urements should be carried out quickly on samles that evaporate easily.If possible,
the samples should be at the same temperature as the measuring instrument in order
to achieve an accurate result.
7.3 Measuring procedure
▸ Make sure your hands are dry before handling the refractometer.
▸ Open the prism cover [1]and use the supplied pipette [8]to apply a few drops of
the sample liquid [8]onto the prism surface [2], then close the prism cover [1].
Spread the liquid evenly by pressing down on the prism cover [1]and eliminate
any air bubbles present.
▸ Hold the device horizontally and wait about 30 seconds (for optimal temperature
equalisation between the sample and device).
▸ View the measurement scale through the eyepiece [4]. Point the prism surface [2]
of the refractometer at a bright light source while doing this.
▸ Rotate the adjustment ring [5]on the eyepiece [4]to adjust the focus.
▸ The boundary line will move on the measurement scale depending on the concen-
tration. This bright/dark boundary line shows the result directly on the scale.
▸ If the temperature deviates from +20 °C, correct the measured result using the
corresponding value from the temperature correction table [13].
▸ Carefully clean the supplied pipette [8]and the refractometer aer carrying out
the measurement.
Important!
Aer every measurement, use a lint-free, absorbent cloth to remove
the fluids from the prism surface [2]and prism cover [1]. Then
carefully clean the prism and prism cover using a cloth moistened
with water and dry both parts using a so, dry and lint-free cloth. Avoid rubbing the
prism [2].
9
8. Cleaning and maintenance
with water, or if necessary alcohol. Do not use any aggressive or abrasive
cleaning agents. Never immerse the device in water or hold it under running water.
Never handle the device with wet or damp hands.
Never touch the measuring prism [2]with hard tools made from plastic, wood,
glass, resulting in measurement errors.
The refractometer is maintenance-free.
refractometer to maximise its life and optimise measurement results.
9. Storage
Store the refractometer in a dry, non-corrosive environment, preferably
between 10 °C and 30 °C.
10. Service
Aer reading this operating manual, if you have any questions about setting up or
using the refractometer, or if any unexpected problem occurs, please contact your
dealer. The device housing may only be opened by trained service technicians
authorised by KERN.
11. Disposal
The packaging consists of environmentally friendly materials which can be disposed
of via local recycling facilities.
The device and storage box should be disposed of by the operator in accordance
with applicable national or regional regulations at the place of use.
12. Additional information
The product may differ slightly from the illustrations.
Avoid exposing the refractometer to direct sunlight.
Never bring the refractometer into contact with solvents.
13. Brix to refractive index (nD) conversion table
Data from „ICUMSA“ International Commission for Uniform Methods
of Sugar Analysis, at 20 °C and 589 nm wavelength.
!
!
14. Annex
Table 1: International Temperature Correction Table for °Brix (% sugar gradient)
Correct the result by the following values (refractometer must be correctly
calibrated at 20 °C).
11 ORA_80BE-BA-e-1510 13 Brix to refractive index (nD) conversion table
BRIX
Refractive
indexBRIX
Refractive
indexBRIX
Refractive
index
% nD % nD%nD
0
1.33299
30
1.38115
60
1.44193
1 1.33442311.38296611.44420 2 1.33586321.38478621.44650 3 1.33732331.38661631.44881 4 1.33879341.38846641.45113
5
1.34026
35
1.39032
65
1.45348
6 1.34175361.39220661.45584 7 1.34325371.39409671.45822 8 1.34476381.39600681.46061 9 1.34629391.39792691.46303
101.34782401.39986701.46546 111.34937411.40181711.46792 121.35093421.40378721.47037 131.35250431.40576731.47285 141.35408441.40776741.47535 151.35568451.40978751.47787 161.35729461.41181761.48040 171.35891471.41385771.48295 181.36054481.41592781.48552 191.36218491.41799791.4881 201.36384501.42009801.49071 211.36551511.42220811.49333 221.36720521.42432821.49597 231.36889531.42647831.49862
24
1.37060
54
1.42862
84
1.50129
251.37233551.43080851.50398 261.37406561.43299 271.37582571.43520 281.37758581.43743
29
1.37936
59
1.43967
Data from "ICUMSA" International Commission for Uniform Methods of Sugar Analysis, at 20 °C and 589 nm wavelength.
ORA_80BE-BA-e-1510
14 Annex
Table 1: International Temperature Correction Table for°Brix (% sugargradient)
Correct theresult by thefollowing values (refractometer must becorrectly calibrated at 20 °C)
% Brix
reading
0.0 5.0 10.0 15.0 20.0 25.0 30.0 35.0 40.0 45.0 50.0 55.0 60.0 65.0 70.0 75.0 80.0 85.0
Temperature °C
10.0 -0.53 -0.56 -0.59 -0.62 -0.65 -0.67 -0.69 -0.71 -0.72 -0.73 -0.74 -0.75 -0.75 -0.75 -0.75 -0.75 -0.74 -0.73
11.0 -0.49 -0.52 -0.54 -0.57 -0.59 -0.61 -0.63 -0.64 -0.65 -0.66 -0.67 -0.68 -0.68 -0.68 -0.68 -0.67 -0.67 -0.66
12.0 -0.44 -0.47 -0.49 -0.51 -0.53 -0.55 -0.56 -0.57 -0.58 -0.59 -0.60 -0.60 -0.61 -0.61 -0.60 -0.60 -0.60 -0.59
13.0 -0.40 -0.41 -0.43 -0.45 -0.47 -0.48 -0.50 -0.51 -0.52 -0.52 -0.53 -0.53 -0.53 -0.53 -0.53 -0.53 -0.52 -0.52
14.0 -0.34 -0.36 -0.38 -0.39 -0.40 -0.42 -0.43 -0.44 -0.44 -0.45 -0.45 -0.46 -0.46 -0.46 -0.46 -0.45 -0.45 -0.44
15.0 -0.29 -0.31 -0.32 -0.33 -0.34 -0.35 -0.36 -0.37 -0.37 -0.38 -0.38 -0.38 -0.38 -0.38 -0.38 -0.38 -0.37 -0.37
16.0 -0.24 -0.25 -0.26 -0.27 -0.28 -0.28 -0.29 -0.30 -0.30 -0.30 -0.31 -0.31 -0.31 -0.31 -0.31 -0.30 -0.30 -0.30
17.0 -0.18 -0.19 -0.20 -0.20 -0.21 -0.21 -0.22 -0.22 -0.23 -0.23 -0.23 -0.23 -0.23 -0.23 -0.23 -0.23 -0.23 -0.22
18.0 -0.12 -0.13 -0.13 -0.14 -0.14 -0.14 -0.15 -0.15 -0.15 -0.15 -0.15 -0.15 -0.15 -0.15 -0.15 -0.15 -0.15 -0.15
19.0 -0.06 -0.06 -0.07 -0.07 -0.07 -0.07 -0.07 -0.08 -0.08 -0.08 -0.08 -0.08 -0.08 -0.08 -0.08 -0.08 -0.08 -0.07
20.0 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
21.0 0.06 0.07 0.07 0.07 0.07 0.07 0.08 0.08 0.08 0.08 0.08 0.08 0.08 0.08 0.08 0.08 0.08 0.07
22.0 0.13 0.14 0.14 0.14 0.15 0.15 0.15 0.15 0.16 0.16 0.16 0.16 0.16 0.16 0.15 0.15 0.15 0.15
23.0 0.20 0.21 0.21 0.22 0.22 0.23 0.23 0.23 0.23 0.24 0.24 0.24 0.24 0.23 0.23 0.23 0.23 0.22
24.0 0.27 0.28 0.29 0.29 0.30 0.30 0.31 0.31 0.31 0.32 0.32 0.32 0.32 0.31 0.31 0.31 0.30 0.30
25.0 0.34 0.35 0.36 0.37 0.38 0.38 0.39 0.39 0.40 0.40 0.40 0.40 0.40 0.39 0.39 0.39 0.38 0.37
26.0 0.42 0.43 0.44 0.45 0.46 0.46 0.47 0.47 0.48 0.48 0.48 0.48 0.48 0.47 0.47 0.46 0.46 0.46
27.0 0.50 0.51 0.52 0.53 0.54 0.55 0.55 0.56 0.56 0.56 0.56 0.56 0.56 0.55 0.55 0.54 0.53 0.52
28.0 0.58 0.59 0.60 0.61 0.62 0.63 0.64 0.64 0.64 0.65 0.65 0.64 0.64 0.64 0.63 0.62 0.61 0.60
29.0 0.66 0.67 0.68 0.69 0.70 0.71 0.72 0.73 0.73 0.73 0.73 0.73 0.72 0.72 0.71 0.70 0.69 0.68
30.0 0.74 0.75 0.77 0.78 0.79 0.80 0.81 0.81 0.81 0.82 0.81 0.81 0.81 0.80 0.79 0.78 0.77 0.75