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1.0 INTRODUCTION.................................................................. 3
2.0 UNPACKING........................................................................ 3
3.0 POWER REQUIREMENTS.................................................. 3
4.0 SET UP.................................................................................. 3
4.1 Equipment Installation........................................................ 3
5.0 CONTROLS............................................................................ 3
5.1 Variable Conditions in Taking Readings.......................... 4
5.2 Calibrating With Distilled Water ...................................... 4
6.0 OPERATING INSTRUCTIONS .......................................... 4
7.0 LEICA ABBE MARK II PLUS REFRACTOMETER............ 5
7.1 Computer Interface............................................................ 5
7.2 Setting the Baud Rate ...................................................... 5
7.3 Printer Interface ................................................................ 5
7.4 Custom Programming........................................................ 5
8.0 REFRACTOMETER USE, TECHNIQUES AND
REFRACTION PRINCIPLES................................................ 6
8.1 High Index/High Dispersion Samples ............................ 6
9.0 CALIBRATION WITH TEST GLASS.................................. 6
10.0 ILLUMINATOR BULB REPLACEMENT ..............................7
10.1 Fuses .................................................................................... 8
11.0 CARE AND CLEANING ........................................................8
12.0 SERVICING ............................................................................8
13.0 SPECIFICATIONS..................................................................8
13.1 The following specifications refer only to the
LEICA ABBE MARK II PLUS Refractometer.................... 9
Explanattion of Warning Symbols
1.0 INTRODUCTION
NNOOTTEE::
Please read these instructions carefully before attempting
to use the instrument.
This Instruction Manual is designed specifically for the LEICA
ABBE MARK II Refractometer and describes proper set up, use
and routine maintenance of the instrument.
SSeeccttiioonnss 77..00 -- 77..44 aarree
aapppplliiccaabbllee oonnllyy ttoo tthhee LLEEIICCAA AABBBBEE MMAARRKK IIII PPlluuss RReeffrraaccttoommeetteerr..
The LEICA ABBE MARK II Refractometer is a durable bench-top
instrument. It provides efficient, reliable and repeatable readings
in three modes:
• % Solids (
O
Brix)
• % Solids (
O
Brix) temperature compensated or (BX-TC) and
• Refractive index (n
D
)
The LEICA ABBE MARK II Plus Refractometer can accommodate
a custom program on the % Solids (
O
Brix) scale. This can be ac-
complished with pre-programming or retrofitting at the factory.
2.0 UNPACKING
The LEICA ABBE MARK II Refractometer has been carefully pack-
aged for shipping. Before setting aside the packing materials,
check the box(es) to assure that all items ordered have been
received. Among the accessories in the refractometer box will be:
• a refractive index test glass (Catalog No. 10451)
• a 1/16" ( No. 4) Allen wrench (Catalog No. X30600)
• a bottle of 1- Bromonaphthaline for measuring solids
(Catalog No. 10452)
• a dust cover (Catalog No. 10450-140)
Check the instrument and model number against the original
order before discarding any packing materials. The original
packing materials may be saved for future storage or transporta-
tion of the refractometer.
3.0 POWER REQUIREMENTS
Models 13104800/13104940 115~ +/-10%, 50/60 Hz
Models 13104810/13104950 230~ +/-10%, 50/60 Hz
• Input power 25P max
• Indoor use only
• Altitude up to 2000m
• Temperature range 5
O
C to 40
O
C
• Pollution degree 2
• Installation category 2
• Max relative humidity 80% for temperatures up to 31
O
C
decreasing linearly to 50% relative humidity at 40
O
C.
4.0 SET UP
The LEICA ABBE MARK II Refractometer is easy to use.
Very little training is needed to set up and operate the instrument
to obtain temperature and refractive index measurements.
4.1 Equipment Installation
The LEICA ABBE MARK II Retractometer must be used on a hard,
stable and level surface such as a laboratory table or work
bench.
5.0 CONTROLS
THE LEICA ABBE MARK II Refractometer controls are identified
in Figure 1.
NNOOTTEE::
The mode selector switch no longer functions as the
on/off switch. The ON/OFF switch is located on the lower left
front cover of the instrument above the Leica logo.
PPoowweerr SSwwiittcchh::
The Power Switch is located in the lower right corner of the front
panel (Figure 1). | = on 0 = off
English
Leica ABBE MARK II Refractometer
Instruction Manual
Contents
5X20 250mA T/250V (Type 10480/10494)
CAUTIONN:
Risk of electric shock
CAUTIONN:
(Refer to accompanying documents)
!
CAAUTION:
As a safety precaution, the power cord
has been grounded to the instrument base. Never use a
2-prong adapter between the power cord and the power
source; it will render the grounding feature ineffective.
CAAUTION:
Use of this equipment other than in the man-
ner specified in this manual may result in reduction of
safety protection.
!
3