Reichert AR6 Series, Руководство пользователя

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9
9.0 WATER BATH
ATTACHMENT
There may be testing applications that
require that the prism assembly
temperature be maintained above or below
ambient temperature. Commercial water
circulators with heating, cooling or
combined capabilities are generally
available from instrument supply dealers.
Check with your Reichert customer service
representative for a suggested list of
suppliers.
If a water bath attachment is used, care
should be taken to avoid exposing the
prism assembly to thermal shock. The
ambient prism temperature should be
raised and lowered by gradually increasing
or decreasing the temperature of the
circulating water. The REICHERT AR600’s
automatic temperature compensation
feature is designed to provide precise
measurements in the 10
4 -45 4 C
temperature range (Channel 1).
Connections between the instrument and
the circulator should be 1/4" (.635cm)
flexible tubing. Observe the operating
instructions of the water bath manufacturer.
10.0 CARE AND CLEANING
The REICHERT AR6 is a precision optical
instrument designed for years of trouble-
free operation. The interior components are
protected from dust, spills and other
damage. The stainless steel refractive
prism assembly is sealed with corrosion-
resistant epoxy.
The use of strong solvents such as
N, N-Dimethylformamide or N, N-Nimethylacetamide,
cresols, phenols and other tar acids should be avoided.
Tetrahydrofuran or some lacquer thinners and their
components can also deteriorate the prism seal over a
long period of time, or when applied at
elevated temperatures.
All non-optical components can be cleaned with soap and
water or methanol. Avoid using all other harsh solvents or
acetone-based products when cleaning.
10.1 Care of Prism Surface
The prism surface should be cleaned immediately after
use. The sample should be wiped off with a dry tissue,
followed by a thorough cleaning with soap and water or
methanol and then distilled water.
The sapphire prism is very hard and has excel-lent
scratch and staining resistance. Strong acids or bases,
however, should not be measured with this instrument,
nor used as cleaning agents.
Warm water is recommended for removing
sugar residues and methanol for oil based
samples, followed by a water cleaning.
Use only diluted neutral detergents to clean
the prism. Do not use any metal or sharp
pointed objects to clean or pry loose the
prism seal or residue on the sample well.
11.0 LAMP REPLACEMENT
WARNING: Unplug the instrument power
cord before attempting to replace the
illuminator lamp.
Remove the old lamp and replace it with
Catalog No. 13105040. The contacts of the
bulb must be cleaned with a soft emery
cloth before replace-ment Be sure that no
fingerprints are left on the surface of the
replacement bulb
12.0 RS232C
The REICHERT AR6 refractometer includes
a serial communications port accessible
from the rear panel. The port has a DB 9-
pin female connector. Output data is
comma delimited in standard ASCII code
and consists of the channel number (e.g.:
CH1), the channel identifier (e.g.: Brix for
channel 1), the mode (e.g.: % Solids-TC20
for a percent solids scale temperature
compensated to 20 degrees centigrade),
the actual reading (e.g.:10.62) and the
actual measured sample temperature (e.g.:
22.6
2 C). This port will support custom
channel programming using standard
communication Software. Do not use a
“Null Modem” cable.
Communications settings are: 8 Data Bits,
No Parity, 1 Stop Bit Flow Control Xon/Xoff,
Baud Rate settings are described in
section 5.2.
The AR6 is capable of being controlled from
a computer through the serial port interface
by using any standard communications
program such as «Terminal» or
«Hyperterminal». Reading output through
the serial port may be formatted to retrieve
virtually any data, in any order desired. To
format the serial string output, type the
letters «help sf’. Brief instructions will
appear. To set the serial format, type the
letters «sf’ followed by the letters for the
output options desired. The default setting
is GFA. Numerous additional commands
are available through the serial port. Ask a
Reichert representative for a complete list
of commands.
13.0 PRINTER OUTPUT
The REICHERT AR6 refractometer is
compatible with an external printer. The
parameters included in the parallel port
data output string correspond to the serial
port data output string. To select
parameters for output, set the serial port
output format as in Section 12.0. The output
is available at the DB-25P type connector
located on the rear panel of the REICHERT
AR6 (Figure 1).
Communication is by a 7-bit, parallel bus
inter-face with synchronous operation.
Contact your Reichert customer service
representative for more information about
connecting a printer to your REICHERT AR6
refractometer.