Kern ORA 4RR Manual

Kern Måling ORA 4RR

Læs gratis den danske manual til Kern ORA 4RR (2 sider) i kategorien Måling. Denne vejledning er vurderet som hjælpsom af 3 personer og har en gennemsnitlig bedømmelse på 4.5 stjerner ud af 2 anmeldelser. Har du et spørgsmål om Kern ORA 4RR, eller vil du spørge andre brugere om produktet?

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Side 1/2
1
2
1. Technical data
Models
KERN
Measuring range
and Scales
Scale gradua-
tions Accuracy
Product
Net weight
ORA 4 RR
RI: 1,440-1,5
20 nD 0,001 nD 137x40x40mm 0,135kg
Operating manual
Analogue refractometer
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
2. Description
1. Prism cover
2. Prism surface
3. Adjustment screw
4. Eyepiece with rubber eyeshade
5. Diopter adjustment ring
6. Optical tubes with rubber grip
Version 1. /201 1 05 6
Example scale on
ORA 4 RR
2
4
5
3
6
1
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.......................................................................................................... 12
11 Disposal ........................................................................................................ 12
12 Additional information 12 ................................................................................
13 Annex ...................................................................................................... 13-14
KERN ORA 4 RR Analogue nD
(research special
liquids)
GB
7. Storage box
8. Pipette
9. Refractometer
10.
Contact liquid
(Clove oil)
11. Adjustment tool
12. Cleaning cloth
5
3
4
3. General information
3.1 Intended use
The refractometer is a measuring instrument for determining the refractive index of
transparent substances in the liquid or 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
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.
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.
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.
▸ Refractometer
▸ Storage box
▸ Pipette
▸ Adjustment tool
▸ Cleaning cloth
▸
Calibration block + Contact Clove oil liquid ( )
!
Avoid bringing the supplied contact liquid (clove oil) into contact with the prism
cover [1]. Even the smallest amounts of clove oil will damage the material of the
cover and lead to its opacification.
Therefore, pay big attention to this aspect while carrying out the adjustment of the refractometer
described below.
If still there is accidentally contact between clove oil and the prism cover, it would not affect
subsequent measurement operations even when high opacification occurs.
Important!
7
14
9
10
12
11
13
% 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
!
7.1 Zero point calibration
▸ Hold up the refractometer against a sufficiently bright light source and look through
the eyepiece
[
5
]
, holding the rubber eyeshade
[
4
]
closely against your eye/glasses.
▸ Rotate the eyepiece
[
5
]
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.
▸ For refractometers without automatic temperature compensation (ATC): Convert
the measured value to take account of the deviation in room and sample tempera-
ture from +20 °C. (See the table at the end of this manual, point 13.)
▸ Repeat step 4 (cleaning).
Important!
The ambient/room temperature and the sample temperature influ-
ence 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 13.
7.2 Additional advice
It is important that the samples being measured are representative samples. For
samples that evaporate easily, measurements should be carried out quickly. 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 concent-
ration. 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 care-
fully clean the prism and prism cover using a cloth moistened with
water or if necessary alcohol, and dry both parts using a so, dry and
lint-free cloth. Avoid rubbing the prism
[
2
]
.
9
8. Cleaning and maintenanceg
Clean the refractometer using a so, lint-free cloth moistened 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,
rubber, metal, glass etc. Hard objects can quickly damage the relatively so
prism glass, resulting in measurement errors.
The refractometer is maintenance-free.
Cleaning should be carried out immediately before and aer each use of the
refractometer to maximise its life and optimise measurement results.
9. Storage
Store the refractometer in a dry, non-corrosive environment.
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 technici-
ans authorised by KERN.
11. Disposal
The packaging consists of environmentally friendly materials which can be dispo-
sed 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. We reserve the right to
make changes to reflect technical advancements, decorations not included.
Avoid exposing the refractometer to direct sunlight!
Never bring the refractometer into contact with solvents.
13. Annex
Table 1: Internati-
onal Temperature
Correction Table
for °Brix (% sugar
gradient)
Correct the result by
the following values
(refractometer must
be correctly
calibrated at 20 °C).
!
▸ Moisten the polished surface of the calibration block with the contact fluid. Now put the
block with the moistened surface downward onto the prism surface [2].
▸ Close the prism cover [1]. The amount of fluid should be sufficient to moisten most of the
block surface. There should not be any air bubbles between the measuring prism [2] and
calibration block.
▸ Wait about 30 seconds to allow the temperatures of the 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 value on the scale which is also visible measured
through the eyepiece
[
4
]
.
▸ Use the supplied adjustment tool
[
11
]
to turn the adjustment screw
[
3
]
behind
the prism surface
[
2
]
(
under the rubber cap
)
, and adjust the scale so that the
measuring device is optimally set up by moving the boundary line upwards or downwards.
Calibration value : 1,4875 nD Refractive Index ( ) (See the calibration line in the scale)

Produkt Specifikationer

Mærke: Kern
Kategori: Måling
Model: ORA 4RR

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