Operating manual
Analogue refractometer
KERN ORA 90 BE
ORA 1 RE
KERN & Sohn GmbH
Ziegelei 1
D-72336 Balingen
E-Mail: info@kern-sohn.com
Contents
1
Technical data .................................................................................................1
2
Description .....................................................................................................2
3
General information .......................................................................................3
3.1 Intended use ...................................................................................................3
3.2 Intended use ...................................................................................................3
4
Basic safety information ................................................................................4
4.1 Follow the instructions in the operating manual ..........................................4
4.2 Warranty ..................................................................................................... 4-5
5
Supplied items ................................................................................................5
6
Before the first use .........................................................................................6
7
Use/measurement .........................................................................................7
7.1 Additional advice ............................................................................................8
7.2 Measuring procedure ................................................................................. 8-9
8
Cleaning and maintenance .......................................................................... 10
9
Storage ......................................................................................................... 10
10 Service ......................................................................................................... 11
11 Disposal ....................................................................................................... 11
12 Additional information................................................................................. 12
13 Brix to refractive index ( nD ) conversion table .......................................12-13
14 Annex ........................................................................................................... 14
1. technische Daten
Measuring range
Models
and Scales
KeRn
Brix: 0-42%
1 Technical data
oRA 90Be
Brix: 42-71%
Models
KERN
Brix: 71-90%
ORA
9 0BE
RI: 1,333-
oRA 1Re
ORA
1 RE
1,5200 nD
Example scale on the ORA 90 BE
Example scale on
ORA 90 BE
Gerätebeschreibung
1
2. Description
Gerätebeschreibung
3
2
1
3
1. Prismenabdeckung
2. Prismenfläche
2
3. Messbereich Verstellrad
4. Dispersions – Einstellring
5. Optische Röhre
3
6. Okular mit Einstellring des Diopters
1. Prismenabdeckung
2. Prismenfläche
3. Messbereich Verstellrad
8
4. Dispersions – Einstellring
5. Optische Röhre
6. Okular mit Einstellring des Diopters
7
8
7. Aufbewahrungsbox
KERN & Sohn GmbH
Ziegelei 1
D-72336 Balingen
E-Mail: info@kern-sohn.com
Betriebsanleitung
Analoges Refraktometer
KERN
ORA 90 BE Analog Expert
Analogue Expert 3x Brix scale
3-fach Skala Brix
KERN
ORA 1 RE
3-fach Skala nD
Analogue Expert 3x nD scale
Version 1.0
12/2014
Tel: +49- [ 0 ] 7433-9933-0
Fax: +49- [ 0 ] 7433-9933-149
Internet: www.kern-sohn.com
ORA_90BE_1RE-BA-d-1410
Scale gradua-
Dimensions
tions Accuracy
Product
0,2 % Brix
0,2 % Brix
200x40x40mm
Measuring
Scale
g radua-‐
Dimensions
Net weight
Product
range
tions
0,2 % Brix
and
Accuracy
Scales
Brix:
0 -‐42%
0.2
%
B rix
200x40x40mm
0.600kg
Brix:
4 2-‐71%
0.2
%
B rix
Brix:
7 1-‐90%
0,005 nD
0.2
%
B rix
200x40x40mm
nD:
1 .333-‐
0.005
n D
200x40x40mm
0.600kg
1.5200
4
5
ORA_90BE-BA-e-1510
1. Prism cover
6
2. Prism surface
4
3. Adjusting wheel measuring range
4. Dispersion adjusting ring
5
5. Optical tubes
6. Eyepiece with diopter
6
adjustment ring
9
7. Storage box
8. Pipette
9. Refractometer
10.
Tools
11.
Cleaning cloth
10
9
11
3. General information
GB
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
Tel: +49-[0]7433- 9933-0
Fax: +49-[0]7433-9933-149
Internet: www.kern-sohn.com
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.
Analog Expert
3.2 Warranty
The warranty shall be void in the event of:
4. Basic safety information
4.1 Follow the instructions in the operating manual
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 immetdiately.
▸ Thoroughly clean the refractometer after 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 re-
fractometer, as this could cause serious eye injuries
Net weight
▸ The rubber eyeshade may cause irritation when in prolonged contact with the
skin. If this happens, consult your doctor.
0,600kg
▸ Do not touch the lenses with your fingers.
0,600kg
5. supplied items
After 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.
1
6. Before the first use
Remove the protective film ( if present ) from the prism surface [ 2 ] and move the
measuring range adjusting wheel [ 3 ] to position 1.
2
▸ 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
▸ 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.
▸ Refractometer
▸ Storage box
▸ Pipette
▸ Tools
▸ Cleaning cloth
3
4
5
6
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