NOS Hemispheric Sensor
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.
Technical Instruction
Measure. Monitor. Repeat.
For better insights, better decision-making and better process performance.
Key Features & Benefits
- 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
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
For 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.
More info
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.
| Common Specifications | |
|---|---|
| Measurement principle | Ultrasonic transit time method |
| Measurement frequency | NOS: 1 MHz, 200 kHz NOS0: 500 kHz, 200 kHz |
| Velocity range | ±25 m/s Minimum flow velocity: 0.01 m/s |
| Channel widths | 0.5 – 200 m (other channel widths upon request) |
| Accuracy | Flow velocity (vaverage) ±0.1% of measurement uncertainty value within the path |
| Protection | IP68 |
| Operating temperature | -40 °C to +50 °C |
| Storage temperature | -40 °C to +70 °C |
| Cable lengths | 10 / 20 / 30 / 40 / 50 / 60 / 70 / 80 / 90 / 100 m Extension option: sensors can be connected to extension modules; max. cable length between extension module and transmitter: 200 m |
| Medium-contacting materials | Stainless steel 1.4571, CFK (carbon), POM, PUR, underwater plug and socket made of Neoprene |
| Temperature measurement (sound velocity) | Measurement range: 0 °C to +60 °C Measurement error: ±1 K |
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