Yokogawa DO202 2-Wire Dissolved Oxygen Analyzer User Manual
Page 68
IM 12J05C01-01E
Appendix 2-3
3/3
QIS 12J05C01-01E
Table 4
Reference (nA)
Data Display (nA)
2 2
±0.02
6 6
±0.04
12 12
±0.07
Press the [ENT] key. The message display will show “POLAR.2.” Change the current of the DC
generator 2 and check the data display. The value on the data display must be within the range
shown in Table 5.
Table 5
Reference (nA)
Data Display (nA)
20 20
±0.1
60 60
±0.3
100 100
±0.5
Press the [ENT] key. The message display will show “POLAR.3.” Change the current of the DC
generator 2and check the data display. The value on the data display must be within the range
shown in Table 6.
Table 6
Reference (nA)
Data Display (nA)
200 200
±1
600 600
±3
1000
1000
±5
Press the [ENT] key until the message display shows “READY.” Press the [ENT] key again to
finish the tests.
Figure 1 Testing Circuit and Test Equipment
Shorting bar
+
-
G 11 12 16
15
13
18
14
17
DO202G
SUPPLY TEMP
GALV SENS
POL SENS
+
-
+
SH
SW1
24 V DC
+
-
-
DC
Ammeter
+
300 :
DC Source
Decade
Resistance
Box
-
+
DC
Generator 1
-
+
DC
Generator 2