Optical turbidity sensor
The new Valeport Hyperion-T essentially consists of two sensors in one.
The first is a "classic" turbidity sensor, a nephelometer that uses a 90° beam angle for low turbidity levels (0 to 1000 NTU). The second, for high turbidity levels (1,000 to 6,000 NTU) uses an optical backscattering device (OBS) (beam angle of ~120°).
Intelligent sampling and the use of a 24-bit ADC eliminates the need for a gain switch at higher turbidity levels. The optical head is very compact - it is only 20mm in diameter and with a full ocean depth rating lends itself to OEM type solutions.
A compact and robust package that is ideal as a stand-alone sensor, for integration of ROVs and AUVs or used as part of a multi-sensor network and data logging system.
Offered as standard in a titanium housing with a nominal depth of 6,000m, the Hyperion turbidity instrument features a wide range isolated power supply (9-30V DC), data output up to 16Hz over RS232 and RS485 or Modbus.