ATAGO MASTER Series User manual

ATAGO instruments are rigorously inspected to ensure each unit meets the highest standards of quality assurance.
PRECAUTIONS
(Be sure to read the following before use.)
Warning!
Caution
When using this instrument to measure
solutions which may be harmful to humans,
please handle all materials carefully, using
the proper gloves and mask. Please be
aware of any special handling instructions for
any harmful solution.
●Carefully read the instruction manual of this instrument to
ensure proper use and operating methods.
●When handling and carrying this instrument, avoid dropping
or subjecting to any strong shock or excessive force.
●If this instrument is used for any application other than its
intended purpose, ATAGO will not be held liable for any
damage caused by the use of or the measurement(s)
obtained by the operator.
●ATAGO is not liable for any loss and damage caused by
the measurement and use of this instrument.
●The prism is considered a consumable item and a charge
will be incurred for the replacement of this part.
●All instruments received for repair are subject to a possible
inspection fee. ATAGO does not warrant the problems
which are caused by user's fault even though the unit is
under warranty.
Thank you for your purchase of a quality ATAGO product.
光… Capture the Light, Measure the Future!
1. Names and functions of main parts
11. Specifications
Brix 0.2%
Brix 0.0 to 53.0% Brix 0.0 to 20.0%
Brix ±0.2% (at 20℃)
Brix ±0.1% (at 20℃)
IP65 Water Resistant (except eyepiece)
3.2×3.4×20.7cm, 110g
3.2×3.4×16.8cm, 90g
Brix 0.1%
Brix ±0.2% (10 to 30℃)
Brix ±0.1%
Measurement range
Minimum scale
Accuracy
Size and weight
International
Protection class
Repeatability
(Automatic Temperature Compensation)
MASTER-53Pα
(Cat.No.2971)MASTER-20Pα
(Cat.No.2991)
Brix 0.0 to 10.0%
3.2×3.4×20.3cm, 105g
Brix 0.1%
Brix ±0.2% (10 to 30℃)
Brix ±0.1%
MASTER-10Pα
(Cat.No.2981)
（MASTER-53Pαpictured above.）
cThe eyepiece and daylight
plate are user replaceable.
Please contact an ATAGO
distributor to place an order or
for any inquiries.
Eyepiece
Grip
Daylight plate
Prism
Sample Stage
Scale adjustment screw
Access now ⇒
In just - a - minute
From 1year to2years Free Extended Warranty
It requires only 1 minute! Simply by answering questions, warranty period is extended from 1 year to 2 years.
(The registration page can be accessed from ATAGO website.)
(Water Resistant ＆Automatic
Temperature Compensation)
MASTER SERIES REFRACTOMETER
INSTRUCTION
MANUAL
series
MASTER-20Pα(Cat.No. 2991, Brix 0.0 to 20.0%)
MASTER-10Pα(Cat.No. 2981, Brix 0.0 to 10.0%) MASTER-Pα(Cat.No. 2391, Brix 0.0 to 33.0%)
MASTER-53Pα(Cat.No. 2971, Brix 0.0 to 53.0%)
9. When moisture accumulates in the eyepiece
11. Specifications
IP65 Water Resistant (except eyepiece)
International
Protection class
Design Registration No.000379326-0001, 000379326-0002 (EU), ZL 2005 3 0116403.4,5 (China), D111526 (Taiwan), D554, 549 (U.S.A.)
1255763, 1255764, 1255765, 1255766, 1255767 (Japan)Patent Granted in countries around the world.
10. Repair and warranty
Have the serial number of your refractometer available when asking about repair.
7. Quick and Easy sampling
inside of eyepiece
outside of eyepiece
If the view of the scale and boundary line becomes obstructed by moisture
within the eyepiece, follow the instructions below for proper cleaning:
①While holding the eyepiece toward you, turn the eyepiece counter-clockwise
until it can be removed.
②Gently wipe the two areas indicated by the arrows in the figure with a
clean, dry cloth to remove any moisture.
③Replace the eyepiece and secure by turning in a clockwise direction.
※MASTER-Pαseries are water-resistant rated (JIS-C0920 5th grade jet proof type,
IEC specification 529, IP65), however the eyepiece section is not water-resistant.
Note: A brix value expressed as a percentage (％) is equivalent to that value expressed in degrees Brix (°Brix).
Place apporoximately 0.3mL of sample on the front end (Figure ①)or the rear end
(Figure ②) of the sample stage, and tilt the refractometer slightly in the proper
direction to allow the sample to move over the prism. The sample liquid will spread
evenly and the measurement value can then be read more quickly and easily. By
eliminating the steps of lifting and closing the daylight plate when applying a
sample, the operator can save much time when having to measure many samples
daily. (This measuring method requires the sample to be low in viscosity.)
8. Brix Scale
All refractometers are designed to measure the refractive index of a solution. The Brix scale is based on a sucrose
(sugar)and water solution. However, since most samples contain substances other than sugar - such as salts, minerals
and proteins - the Brix percentage represents the total concentration of all soluble solids in the sample. For certain
samples, such as cutting oils and other industrial fluids, a conversion chart from the Brix percentage to the sample's
total concentration may be necessary.
The MASTER-Pαseries are warranted for one year after the date of purchase against any manufacturer defect in materials or workmanship.
Prism and sample stage are excluded from the warranty. Any of the following events happening to the unit will void the warranty:
●Disassembled by anyone other than authorized service provider ●Immersed in liquid or dropped
●Misused, abused, or used/stored in improper ambient conditions
Service fees are applicable for repairs after the warranty period expires. Contact an authorized ATAGO Service Center or the
original seller for details.
①
②
1911K Printed in Japan
Headquarters: The Front Tower Shiba Koen
23rd Floor 2-6-3 Shiba-koen, Minato-ku
Tokyo 105-0011, Japan
TEL: [phone] FAX:[phone]
[e-mail] http://www.atago.net/
TEL: [phone]
[e-mail]
TEL: [phone]
[e-mail]
TEL: [phone]
[e-mail]
TEL: [phone]
[e-mail]
TEL: [phone]
[e-mail]
TEL: [phone]
[e-mail]
TEL: [phone]
[e-mail]
TEL: [phone]
[e-mail]
TEL: [phone]
[e-mail]
Brix 0.2%
MASTER-Pα
(Cat.No.2391)
Brix 0.0 to 53.0% Brix 0.0 to 33.0%
Brix ±0.2%
(at 20℃)
Brix ±0.1% (at 20℃)
Brix 0.2%Brix 0.1%
Brix ±0.2%
(10 to 30℃)
Brix ±0.1%
Measurement range
Minimum scale
Accuracy
Repeatability
(Automatic Temperature Compensation)
Size and weight 3.2×3.4×20.3cm, 105g
Brix 0.0 to 20.0%
Brix 0.1%
Brix ±0.2%
(10 to 30℃)
Brix ±0.1%
3.2×3.4×20.7cm, 110g
Brix 0.0 to 10.0%
Brix ±0.2%
(10 to 30℃)
Brix ±0.1%
3.2×3.4×20.3cm, 105g
3.2×3.4×16.8cm, 90g
MASTER-53Pα
(Cat.No.2971
MASTER-10Pα
(Cat.No.2981)MASTER-20Pα
(Cat.No.2991)
2971-E07
Eyepiece
Daylight plate
RE-2311-12M
RE-2315-61M
RE-2391-67M
Small volume
daylight plate
Part #Name

R
AUTOMATIC& W AT E RR E SIS TA NT
MANUAL
MANUAL
MANUAL
AUTOMATIC&
W
ATERRESISTANT
5. Verifying Calibration and Calibration Certification
2. Precautions 4. Automatic Temperature Compensation (ATC)
With each sample, the refractive index varies depending on the temperature. The position of the boundary
line, seen through the eyepiece, will deviate based on the temperature at the time of measurement.
With a non-ATC Hand-held Refractometer, manual calculation for temperature correction is needed. For
example, at 10℃intervals, a variation of 0.6 to 0.8% can be seen for a standard sugar solution at
10%.
The MASTER-Pαutilizes a built in Automatic Temperature Compensation feature so that the instrument's
internal scale will shift automatically when the ambient temperature changes. This feature eliminates
the need for temperature compensation charts. The refractometer and the sample should be at the
same ambient temperature to ensure that the ATC feature is working correctly.
To measure a heated or refrigerated sample, allow the sample to conform to the ambient temperature
before taking measurements. Waiting 1 to 2 minutes after putting the sample onto the prism will ensure
more accurate readings.
When the measurement value falls outside of the expected range, verify calibration according to section 6.
Calibration.
［1］Verifying Calibration
Periodic maintenance/service and calibration of your refractometer is recommended. The frequency at
which calibration is performed will depend on each company’s Standard Operating Procedures.
①Confirm that the prism is clean and free of scratches.
②Measure purified water or a sucrose solution. Check that
the boundary line is parallel to the memory lines.
③Verify that the measurement value is within ±0.2％of the
expected value of the purified water (0.0%) or sucrose
solution.
6. Calibration
If the measurement value is incorrect after verifying calibration
(section 5.)adjust the scale at an ambient temperature of 20℃.
Put purified water on the prism, then view the scale through the
eye piece. To adjust the scale during calibration, turn the scale
adjustment screw located on the underside as shown in the figure
to the right.
［2］Calibration Certification
Based on ISO quality management system, Calibration Certificates can be ordered for any ATAGO
refractometer. HACCP or GMP certification can also be provided at additional cost. Please contact an
ATAGO distributor for more information.
*Measure at an ambient temperature of 20℃.
1 2 3
4 5
××
3. Measurement
Close the daylight plate gently.
Put one or two drops of sample
on the prism. The sample must spread evenly
over the prism surface.
Air bubbles should be eliminated.
View the scale through the
eyepiece. To focus, turn eyepiece in
either direction until clear. Use the
number printed on the side of the
eyepiece as a reference for the
position of the eyepiece when it is in
focus.
Read the measurement value
where the boundary line intersects
the scale.
(MASTER-53Pαpictured above.)
Wipe the sample off with a wet tissue
or wash the prism with water.
After washing the prism, wipe off any
remaining water with a dry soft tissue.
6
*Hold the refractometer between your fingers.
Do not wrap your hand around the grip.
RE-110010
RE-110020
RE-110030
RE-110040
RE-110050
Part No. Part Name
Sucrose Solution 10.0％(g/100g)
Sucrose Solution 20.0％(g/100g)
Sucrose Solution 30.0％(g/100g)
Sucrose Solution 40.0％(g/100g)
Sucrose Solution 50.0％(g/100g)
The MASTER-H series is the heat-resistant model of the MASTER series. They are equipped with corrosion-resistant tempered
glass prism and designed to withstand high-temperature samples. The conventional H-50, H-80, and H-93 refractometers are
recommended for measuring jams during the cooking process.
*Although the unit is rated IP65 dust-tight and
resistant against water jets, it may be
damaged from moisture penetration if left wet
for extended periods of time.
*MASTER-53Pαscale uses 0.2% increments
on the left, and 0.5% increments on the right.
●Do not submerge the unit underwater for a
prolonged period of time.
● Do not submerge the unit in a hot liquid,
such as a soup simmering in a pot.
●When measuring a hot sample, the sample
should be allowed to cool down to room
temperature before being placed on the prism.
By following this procedure the integrity of
the prism will not deteriorate as quickly if
used to measure hot samples continually.
●Keep the unit away from any heat source,
such as a cook stove.
●Use water at ambient temperature (about
20℃) to clean the prism area after measur-
ing a high-temperature solution. Do not
use cold water (below 10℃).
●The refractometer is a precise and sensitive
optical instrument. Do not drop or subject to
strong shock or excessive force.
● Store the unit in its original storage case in a
dry, room temperature (0-40 ℃) environment
away from direct sunlight.
● When measuring a murky or dark solution,
the boundry line may be difficult to make
out or completely invisible. Hold the unit up
to stronger light, such as direct sunlight or
a light source for microscopes.
●The prism and daylight plate should be
completely clean for each measurement.
Oil-based solutions may leave a film-like
residue. Clean the prism and daylight plate
with alcohol or mild detergent diluted with
water.
10℃
10℃
0123456
R
MANUAL
A-４５８