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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.
|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||+/- 2.0 mm or 0.2% of the measured range (whichever is greater)|
|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