| 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 |