Chapter 2 Installation
2-8
AA-6800/6650 Instruction
2.3.1 Power Requirements
The following table gives the power requirements for each of the components (The power requirement for a
personal computer system is not shown in the table).
Table 2.3 Power Requirements
• When the power voltage of AA-6800/6650 changes 5 %, absorbance changes approx. 0.005 Abs.
2.3.2 Water Supply Requirements
Use of the GFA (special accessory) requires piped water for cooling the graphite furnace. The following
requirements must be satisfied:
(1) A water outlet and return water drain must be located within 7 m of the instrument.
(2) Water pressure of 0.07 MPa is necessary. If the water pressure decreases below 0.05 MPa, a safety
device will activate to stop the operation. The upper limit of water pressure is about 0.1 MPa. If the water
pressure in your arrangement is too high, prepare the pressure reducing valve (special accessory,
Regulator ASSY P/N 206-86147-91) additionally.
(3) Water consumption under these conditions is approximately 1 L/min.
2.3.3 Gas Requirements
(1) Gas Specifications
Be sure that gases are supplied for flame analysis according to the specifications given in Table 2.4.
Table 2.4 Gas Specifications
AA-6800/6650
Voltage 100, 120, 220,
230, 240 V
Allowable voltage range Within r 10 % (Free from sudden voltage change)
Power capacity 600 VA
Source frequency 50/60 Hz
Connections Grounded outlet
Supply pressure Max. consumption Purity
Air 0.35 MPa 24 L/min Free from oil, moisture and dust
Nitrous oxide 0.35 15 Purity t 98 %, moisture d 1 %
Argon 0.35 24 Purity t 99 %
Acetylene 0.09 4.9 (Air-C
2
H
2
flame) Purity t 98 %
9.9 (N
2
O-C
2
H
2
flame)
Hydrogen 0.09 30 Purity t 99 %
WARNING
Use only gases in Table 2.4 for flame analyses.
Do not use oxygen gas.
2.3 Equipment Requirements