McVan ANALITE NEP390 Series In-Situ Turbidity Sensors

The ANALITE 390 series of microprocessor based turbidity probes are designed for monitoring and process applications where turbidity levels of up to 1,000NTU may be encountered. Available ranges are 40NTU, 100NTU, 400NTU and 1,000NTU, which can be set by the user. Currently there are four probes available in the ANALITE 390 series, namely the NEP390, NEP391, NEP395 and NEP396. Specifically the NEP390 and NEP391 probes are designed for applications where bio-fouling will not be a problem such as short monitoring deployment or placement in fast and cold running water. The NEP395 and NEP396 probes however, with their integral wiper assembly, are designed where bio-fouling or sedimentation build-up is likely. Wiping can be initiated automatically (periodically), via a direct RS232 command or manually as required.

The ANALITE 390 series probes may be operated at depths of up to 100 meters (approx. 330 feet).

All ANALITE 390 series probes use 90° optics and employs infrared light in accordance with ISO7027. All probes use a unique modulation technique that ensures almost total rejection of fluctuating ambient light conditions.

The probes may be calibrated at any time or have later firmware uploaded by the user via the RS232 interface.

Two cable connection systems are available. The standard version employs a marine grade connector to terminate the cable to the probe, whereas the G version has the cable permenantly connected to the probe via a waterproof gland.

The applications that the ANALITE 390 series probes are so extensive and too numerous to list but generally they include:

1. Monitoring of streams and rivers.
2. Monitoring of water storage bodies including stratification studies.
3. Intermediate and final effluent treatment monitoring.
4. Hydrological run off studies.
5. Ground and bore water analysis.
6. Drinking water filtration efficiency.
7. Industrial process monitoring.
8. Sludge and dredge monitoring.

Which model is best used is dependent on the application, the measuring environment, the logging equipment and the monitoring period (deployment times) required.