Flow Sensors
NOS Hemispheric and Ballhead Sensor
Part No. NOS-VX0BFor measurement places with various geometries
For connection to NivuFlow 650 transmitters. High accurate flow measurement based on the transit time method for open channels and waters, mainly process water channels and natural water bodies.
![[Translate to English:] NOS Halbkugelsensor für Durchflussmessung in sauberen bis leicht verschmutzten Medien mit Montageblech](/fileadmin/_processed_/8/4/csm_NOS-hemi-sensor_2cc545ef5d.png "[Translate to English:] NOS Halbkugelsensor für Durchflussmessung in sauberen bis leicht verschmutzten Medien mit Montageblech")
![[Translate to English:] Kugelkopfsensor für Durchflussmessung nach dem Laufzeitdifferenzprinzip](/fileadmin/_processed_/8/c/csm_Kugelkopfsensor_c1dbefd7af.jpg "[Translate to English:] Kugelkopfsensor für Durchflussmessung")
![[Translate to English:]](/fileadmin/user_upload/Produkte/Durchflussmessung/Teilfuellung/NOS-Halbkugelsensoren/NOS0.jpg "[Translate to English:]")
![[Translate to English:] NOS Halbkugelsensor für Durchflussmessung in sauberen bis leicht verschmutzten Medien mit Montageblech](/fileadmin/_processed_/8/4/csm_NOS-hemi-sensor_106018fdbf.png "[Translate to English:] NOS Halbkugelsensor für Durchflussmessung in sauberen bis leicht verschmutzten Medien mit Montageblech")
![[Translate to English:] Kugelkopfsensor für Durchflussmessung nach dem Laufzeitdifferenzprinzip](/fileadmin/_processed_/8/c/csm_Kugelkopfsensor_884b6103e3.jpg "[Translate to English:] Kugelkopfsensor für Durchflussmessung")
![[Translate to English:]](/fileadmin/_processed_/2/d/csm_NOS0_b3f63f7b05.jpg "[Translate to English:]")
- <link https: www.nivus.com en service-download know-how laufzeitdifferenz external-link-new-window>Ultrasonic transit time sensor for connection to NivuFlow 650
- Hydrometry with highest measurement accuracy
- Measurement in clear to slightly polluted water
- For 8-path measurements according to IEC 60041 (ASME PTC 18)
- Measurement in open channels and surface water bodies
- Resistant sensor material for use in various media
- Up to 100 m of cable length between sensor and transmitter or adapter box
NOS hemispheric and ballhead sensors are part of a fixed measurement system for continuous flow measurement and storage of the recorded measurement data. They can be used for clean to slightly polluted media in part filled and full flumes as well as channels featuring various geometries and dimensions.
Typical NOS hemispheric and ballhead sensor applications
- Fixed measurement of surface water bodies such as rivers, channels and similar
- Irrigation systems
- Inlets and outlets conducting cooling water or circulation systems
- WWTP outlets
- Investigation of infiltration/extraneous water or leakage
- Industrial flow measurements
- and many more
| Common | |
|---|---|
| Connection | |
| Aerial connection | |
| Protection | |
| Protocol | |
| Ex-Approval | |
| Storage temperature | |
| Data transmission | |
| Operating temperature | |
| Display | |
| Humidity | |
| Storage temperature | |
| Storage temperature | |
| Operating temperature | |
| Operating temperature | |
| Power supply | |
| Weight | |
| Enclosure | |
| Enclosure | |
| Power supply | |
| Data transmission | |
| Data memory | |
| Storage cycle | |
| Outputs | |
| Inputs | |
| Operation | |
| Max. humidity | |
| Measurement principle | |
| Measurement principle | Ultrasonic transit time method |
| Measurement uncertainty | flow velocity (v average) ± 0.1 % of measurement uncertainty value within the path Offset velocity < ± 5 mm/s |
| Measurement frequency | 1 MHz, 200 kHz, and or 500 kHz |
| Protection | IP68 |
| Operating temperature | -20 °C to +50 °C |
| Storage temperature | -30 °C to + 70 °C |
| Operating pressure | max. 1 bar |
| Cable lengths | 10/15/20/30/50/100 m pre-configured, with underwater plug to facilitate Installation Extension option: Sensors can be connected to Extension modules NFE, cable length between NFE and Transmitter max. 200 m |
| Weight (sensor head) | approx. 1000 g |
| Medium-contacting materials | Hemisphere sensor: stainless steel 1.4571, CFK (Carbon), POM, PUR, underwater plug and socket made of Neoprene |
Specifications subject to change.
Technical Description "Transit Time Sensors Rev. 05"
