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POA flow velocity sensors are suitable for continuous measurement of slight to heavily polluted media.
The pipe-shaped sensors are designed for installation in pipes from the outside using a nozzle. Combined with transmitter types such as NivuFlow 750 and an external level measurement the result is a complete flow measurement system.
General | |
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Measurement principle | Ultrasonic Cross Correlation with digital pattern detection (flow velocity) Ultrasonic transit time (level measurement) |
Sensor types | v-sensor with T-compensation v-sensor with T-compensation and h measurement (water-ultrasound) |
Ex-Approval | II 2 G Ex ib T4 Gb (ATEX) Ex ib IIB T4 Gb (IECEX) |
Operating temperature | -20 °C to +50 °C -20 °C to +40 °C if using the sensors in Ex Zone 1 |
Storage temperature | -30 °C to +70 °C |
Operating pressure | max. 4 bar |
Cable lengths | 10/15/20/30/50/100 m pre-configured, can be extended upon request |
Cable types | LiYC11Y 2 x 1.5 + 1 x 2 x 0.34 |
Outside cable diameter | 8,4 mm ±0,25 mm |
Sensor connection | Cable end pre-configured for connection to NFP and OCM CF Cable end with plug for connection to PCM 4 and PCM Pro |
Medium-contacting materials | Polyurethane, stainless steel 1.4571, PPO GF30, PTFE Optional: sensor resistant to chemicals made of PEEK, sleeve made of Hastelloy C-276; cable with FEP coating |
Flow velocity measurement | |
Measurement range | -100 cm/s to +600 cm/s |
Number of scan layers | max. 16 |
Measurement uncertainty | for 0.05≤|V|≤0.5 m/s: E_v=0.5/|V| [%] |
Zero point drift | absolutely stable zero point |
Beam angle | ±5 degrees |
Level measurement water-ultrasonic sensor | |
Measurement range | 0.05 to 200 cm |
Zero point drift | Absolutely stable zero point |
Measurement uncertainty | for 0.05≤|V|≤0.5 m/s: E_v=0.5/|V| [%] for |V|>0,5 m/s: E_v=1 % |
Temperature measurement | |
Measurement range | -20 °C to +60 °C |
Measurement uncertainty | ±0.5 K |
Specifications subject to change.
Technical instructions for correlation sensors and external electronic box
Installation instruction for save installation
EC type examination certificate sensor type POA incl. supplement
Ultraschall-Aktivsensoren POA / OCL / CS2