4.
BLOCK DIAGRAM
4.1 Operational Principle ............................................................4-1
4.1.1 Operational Principle of Mechanical Block .................................4-1
4.1.2 Data Processing .........................................................................4-2
4.2 Block Wiring Diagram ...........................................................4-5
4.1 Operational Principle
4.1.1 Operational Principle of Mechanical Block
Model 7080 consists of analytical unit and control unit. Fig. 4-1 shows a detailed configuration of the 7080
system.
Vials with samples are set on the sample disk, and reagents are set on the reagent disk. Requests for
measurement tests for each sample, along with input on analytical conditions, are performed from the control
unit.
The analyzer requires up to 15 minutes in reaction from the addition of first reagent until the last photometric
point. After reagents 1, 2, 3 and 4 are added, each reagent and sample are stirred automatically by the stirring
rods: Absorbance is measured 49 times for up to 15 minutes at approximately 20-second intervals. When
measurement is complete, the reaction liquid is aspirated by the vacuum mechanism and rinsed with detergent
and deionized water, making possible subsequent analysis. The reaction time for each test can be freely
selected from 3, 4, 5, 10 or 15 minutes, along with the combination of reagents (reagents 1, 2, 3 and 4). The
detailed analysis is automatically performed using the following procedure. It takes 10 seconds for one cycle,
and absorbance of reaction liquid in each reaction cell is measured once per two cycles:
(1) Measurement of water blank
The rinse mechanism discharges deionized water into the reaction cell, and the absorbance of the reaction cell
with water is measured four times. This measurement value is then used as a reference for the absorbance of
reaction cell. The water in reaction cell is vacuum aspirated after water blank measurement.
(2) Sampling
The sample disk rotates and brings the sample cell to be measured to the specified position. The sampling
mechanism moves the sampling probe over the sample cell, and lowers it. The sampling probe has a liquid
level detector: When it touches the surface of sample, it will stop. The volume of sample specified by the control
unit is aspirated. The sampling probe moves to the reaction disk, descends until its tip touches the bottom of
reaction cell, and then discharges sample.
After sample is discharged, the inside and outside of probe are rinsed with deionized water.
(3) Discharging of reagent
When the reaction cell with sample discharged stops at the reagent 1 discharging position, the reagent pipetting
mechanism aspirates the required reagent from the reagent disk, moves directly above the reaction cell, and
then discharges the reagent in specified volume from the control unit.
After approx. 1.3 minutes, the reaction cell moves to the reagent 2 discharge position and stops; after approx. 5
minutes, it moves to the reagent 3 discharge position and stops; after approx. 10 minutes, to the reagent 4
discharge position and stops. The specified volume of reagent is discharged each time, in the same way as for
reagent 1: Unnecessary reagents are not discharged.
(4) Stirring
After reagents 1, 2, 3, and 4 are discharged, the stirring rod descends into the reaction cell and rotates: The
serum and reagent are stirred. If no reagent is discharged, stirring is not performed. After stirring, the stirring
rod is rinsed with deionized water.
4-1
(5) Rinsing
The reaction liquid (serum + reagent) whose measurement is complete is aspirated by the vacuum mechanism,
and detergent is discharged into the reaction cell. The detergent is then aspirated: In subsequent steps,
discharge and aspiration of deionized water are repeated three times. Finally, aspiration is performed twice by
the vacuum mechanism, for subsequent analysis.
(6) Photometric measurement
Every reaction cell crosses the optical axis of photometer once every 20 seconds: Absorbance is measured at
this time.
(7) Data output
The absorbance is converted to concentration by the data processing unit and then output to a printer: The data
is also transferred to host computer on-line, and stored on floppy disk.
4.1.2 Data Processing
As shown in Fig. 4-2, model 7080 basically performs measurement as follows: It measures the absorbance of
up to 49 points at approx. 20-second intervals, for up to 15 minutes, until the final measurement point, after
water blank measurement and addition of reagent 1. The device subtracts the water blank value from the
absorbance value and then processes the data. Water blank is divided into stop cell blank and passed cell
blank, either of which can be used, according to the analytical method.
4-2
4-3
Fig. 4-1 System Configuration of Model 7080
Initial operation (reset)
Water blank measured
All photometry tests
Reaction cell rinsed
Reaction cell rinsed
Sample sampled
Start switch ON
Water aspired
R1 added
R2 added
R3 added
R4 added
Auto stop
complete
Stirring
Stirring
Stirring
Stirring
4 times
Cell correction
3-min reaction (10 photometric points/cell)
for each test
4-min reaction (13 photometric points/cell)
5-min reaction (15 photometric points/cell)
4-4
10-min reaction (31 photometric
points/cell)
15-min reaction
(49 photometric points/cell)
15 min Approx.
.
1.5 min
Printed as soon as data of each sample is collected
Fig. 4-2 Basic Form of Measurement
4.2 Block Wiring Diagram
<Analytical Unit> <Contoroll Unit>
Mechanical Unit
Printer
Cooling Unit FAN4･5
AC Power Unit REL-7 REL-6 CRT
TB2 RY708E Board
TR2 C
CRT
16V
Personal
Printer
0V
Switch
Computer
REL-13
PRT sig.
PRT
B
100V
5V
0V 0V
REL-4
Rocket Port
PCI
PFD MODEM
Switching
Module
(Option)
SW2 Circuit
REL-11 REL-10 REL-5 REL-9 REL-2 REL-3
Window KEY MOU
(20A)
Heater1･2 Keyboard Mouse
LED2
Board RSDIST3
FAN1･2･3 Board
SSR PUMP x 4
(20A)
(6A)
NF1
NF2
ﾐﾆｸﾘｱ
Mini-clear
SSR Therm
Degasser Unit SW
Bercode
SENSOR
Reader
230V
115V
100V
Heater Unit Therm-
0V
ISE
istor
DC Power Unit
(2kVA)
TR1
(+24V,+12V,
Photometer
+5V,±15V)
LAMP
230V
220V
200V
115V
100V
0V
AC Line Out
TEMP AMP
LOG AMP
ISE AMP
(20A)
BCR708
EXT.
Board
Board
Board
Board
REL-8 REL-12 REL-1
SW1
Board
S.AB
ＳＡ
ＳＡ
ＳＡ
Stepping Motor
DIST-O1 Board
TB1
Solenoid Valve
SENSOR
DIST-O2 Board
IOCONT-H Board
Mother Board
Stepping Motor Board
Solenoid Valve
DIST-ICE Board SENSOR
CD-IOM Board
MHSBC Board
L
100V N ADC-SIF2 Board
AC Floppy Disk
G Power Cable Drive
Driver circuit Unit
4-5
