Xylem FDO 925 User Manual
Page 15
FDO
®
925
Technical data
31
ba75898s01
04/2010
Measurement
conditions
Measuring ranges at 20 °C
(68 °F)
0 ... 20 mg/l D.O.
0 ... 200 % D.O
.
saturation
0 ... 400 mbar D.O. partial pressure
Temperature range
0 ... 50 °C (32 ... 122 °F)
Max. admissible overpres-
sure
2.5 x 10
5
Pa (2.5 bar)
Immersion depth
min. 6 cm
max. 25 m (depending on the cable length)
Operating position
any
Approach flow
not required
Storage conditions
Recommended storing
method
in the check and storage vessel,
FDO
®
Check
Storage temperature
0 ... 50 °C (32 ... 122 °F)
Characteristic data
on delivery
Zero signal
< 0.1 % of the saturation value
Response time at 20 °C
(68 °F) in stirred solution
t
90
(90% of the final value display after) < 30s
t
95
(95% of the final value display after) < 45s
t
99
(99% of the final value display after) < 60s
Response time of tempera-
ture measurement
t
99
(99% of the final value display after) < 60s
Precision of temperature
measurement
± 0.2 K
Working life of the sensor
cap
Min. 1 year with authorized use