Chapter 2 Installation
2-6
AA-6800/6650 Instruction
The instrument components are positioned as shown in Figure 2.3.
In addition to this, the installation site for personal computer and printer is necessary.
(1) The installation site should be:
a. Sufficiently distant from devices that generate strong magnetic and electrical fields and high frequency
b. Sufficiently ventilated
c. Free from vibration
d. Free from excessive dust and moisture and should not be exposed to corrosive gases
e. The luminous intensity of installation site for this instrument should be below 1300 Lx in the case of
fluorescent lamp, below 800 Lx in the case of indirect outdoor daylight, and below 400 Lx in the case
of heat light source like incandescent lamp.
f. Ambient temperature range: 10 to 35 qC
Humidity: 45 to 80 % (but less than 70 % if temperature is over 30 qC)
g. Ground is available.
(2) The installation platform (table or counter top) must be capable of supporting the combined weights of the
components listed below and a personal computer system.
(3) Since gas and water pipes and cables are connected at the back of the AA main unit, there must be a
space of about 15 to 20 cm from the back of the AA main unit to a wall.
(4) There must be a space of about 15 to 20 cm between the personal computer and the AA main unit so that
the pressure and flow rate adjusting knobs on the left side of the AA main unit can be operated.
CAUTION
The AA-6800/6650 series are equipped with the safety system using an optical sensor. When installing the
instrument near a window, make sure that it is not exposed to strong outdoor daylight. Exposure to strong
outdoor daylight may interfere with normal operation of the extinguished flame safety system for monitoring
flame combustion (Flame Monitor). When using incandescent lamp or other heat light sources near the main
unit, select the installation site where the luminous intensity by the light source only is below 400 Lx. If not
available, don't allow the direct light from the light source to come into the combustion chamber.
NOTE
Absorbance varies 0.005Abs as the temperature changes 1 qC. When measuring many samples which
requires long time and may result in temperature change influence, execute AUTO ZERO during the
measurement if necessary. In the case of manual flame measurement (not using ASC), you can execute
AUTO ZERO at any time by clicking on the [AUTO ZERO] button on the left lower of the main window. In the
case of automatic flame measurement (using ASC), set AUTO ZERO in [Action] field on the MRT work
sheet. AUTO ZERO is executed during the nozzle rinsing. In the case of furnace measurement, setting is not
necessary because the instrument automatically execute AUTO ZERO just before measurement.
AA-6800/6650 100 kg
GFA-EX7 41 kg
ASC-6100 15 kg
2.2 Instrument Placement and Site Requirements
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