Xylem CellOx 325 Dissolved oxygen sensor - Manual (Page 15)

CellOx 325 Technical data
31
Pin assignment
Measurement
conditions
Measuring ranges at 20 °C 0 ... 50 mg/l O
2
0 ... 600 % O
2
saturation
0 ... 1250 mbar O
2
partial pressure
Temperature range 0 ... 50 °C
Max. allowed overpressure 6·10
5
Pa (6 bar)
Depth of immersion min. 6 cm
max. 20 m (depending on the cable length)
Operating position any
Approach flow > 3 cm/s at 10 % measurement accuracy
10 cm/s at 5 % measurement accuracy
18 cm/s at 1 % measurement accuracy
Characteristic data
on delivery
Zero signal < 0.1 % of the saturation value
Response time at 20 °C t
90
(90 % of the final value display) < 10 s
t
95
(95 % of the final value display) < 16 s
t
99
(99 % of the final value display) < 60 s
Oxygen own consumption
at 20 °C 0.008
µ
g·h
-1
(mg/l)
-1
Drift approx. 3 % per month in the operating con-
dition
Working life min. 6 months with one electrolyte fill