General Specifications |
Measuring principle |
Optical measurement based on photoluminescence. |
Temperature sensor |
Integrated NTC 30 (30 kΩ at 25 °C / 77 °F) |
Weights |
107 g |
Materials |
Shaft |
POM |
Connection head |
POM |
Sensor cap |
PVC, silicone and PMMA |
Sensor head |
POM, PV and PMMA |
Sensor head - sensor cap contacts |
Brass, gold-plated |
Thermistor housing |
VA steel 1.4571 |
Protective hood |
VA steel 1.4571 |
Seals |
FPM (Viton) |
Connection Cable |
Lengths |
FDO 4410W: 1,5 / 3 m |
Diameter |
4.3 mm |
Smallest allowed bend radius |
Fixed installation: 20 mm
Flexible use: 60 mm |
Plug type |
Socket, 4 pins |
IDS plug (FDO 4410W) |
Connection type |
4-pole, watertight plug connection with lock, reverse polarity protected |
Materials |
Synthetic materials: Glass fiber reinforced Noryl, TPU, TPC-ET, POM, PEEK, PBT O-ring: FPM
Contacts gold-plated |
Pressure resistance |
Sensor with connection cable |
IP 68 (1 x 106 Pa or 10 bar) |
Cable plug (FDO 4410) |
IP 67 (when plugged in) |
The FDO 4410(W) meets the requirements according to article 3(3) of the 97/23/EC directive ("Pressure equipment directive"). |
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 overpressure |
1 x 106 Pa (10 bar) |
Immersion depth |
min. 6 cm
max. 100 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 |
Accuracy of D.O. measurement
at 20 °C (68 °F) in airsaturated water |
± 1.5 % |
Zero signal |
≤ 0.02 mg/l O2
≤ 0.2 % O2 saturation
≤ 0.4 mbar O2 partial pressure |
Response time at 20 °C (68 °F) in stirred solution |
t90 (90 % of the final value display after) < 30 s
t95 (95 % of the final value display after) < 45 s
t99 (99 % of the final value display after) < 60 s |
Response time of temperature measurement |
t99 (99 % of the final value display after) < 60 s |
Precision of temperature measurement |
± 0.2 K |
Working life of the sensor cap |
Min. 1 year with authorized use |