Xylem Oxi 1970i PORTABLE DISSOLVED OXYGEN METERS - Manual (Page 23)

Oxi 1970i Operation
23 ba75691e01 01/2007
4.3.1 Calibrating with the air calibration vessel
Proceed as follows to calibrate the instrument:
Note
The sponge in the air calibration vessel must be moist (not wet). Follow
the instructions in the OxiCal
®
-SL or DurOx 325 operating manual.
1 Connect the D. O. sensor to the measuring instrument.
2 Keep an air calibration vessel ready for use.
3 Put the D. O. sensor into the air calibration vessel.
4 Press the key repeatedly until O
2
CAL appears.
5 Press the key. AutoRead is active, AR flashes.
6 As soon as a stable value is achieved, AR stops flashing. Cal-
ibration is finished; the sensor symbol indicates the relative
slope determined and the sensor evaluation (see page 22).
REL1
S
AR
Year Ident
No. Day.Month
Tref25 Tref20
LoBat Lin nLF
mg/ l
ARng
Sal
pH
1
TEC
Auto Store
8
Time Baud Sal cm 1/
K / %
RCL
REL2
pH / mV
m cm S/
%
C
1 7 6
A L
°
C
TP
O
Oxi Cal
REL1
Year Ident
No. Day.Month
Tref25 Tref20
LoBat Lin nLF
mg/ l
ARng
Sal
pH
1
TEC
Auto Store
8
Time Baud Sal cm 1/
K / %
RCL
REL2
pH / mV
m cm S/
%
0
1 7 6
8 8
°
C
TP
O
S
AR Oxi Cal