ORCA Sonar System
Overview
3
Benets
• Improved efficiency and control of the thickener process
• Fully automated plant systems with reliable interface level monitoring
• Advanced warning of process upset or hydraulic in-balance
• Reduced maintenance with automatic cleaning mechanism warranty (no blades to replace)
• Reduced site operational costs significantly with improved process & extraction control
• Improved health and safety on site (no manual dips required).
Principle of Operation
The ORCA Sonar Series transducer emits a high powered low frequency sonar pulse, which is reflected
from the interface density selected. The reflected signal is processed using specially developed software
algorithms that eliminate unwanted densities and stratified layers, allowing measurement of Bed or RAS
levels. It can be calibrated to measure lighter densities such as the hindered / free settling layer & floc or one
of the outputs could be used for a “Clarity” output, similar to a basic turbidity transmitter measuring solids in
suspension. The unit can include two outputs to measure two different interfaces simultaneously.
Function
The ORCA Series Sonar, sludge blanket and interface controller, consists of a microprocessor based
transmitter, with easy menu driven programming via keypad, PC or 3G modem. The ORCA controller works
together with appropriate sonar transducer and transducer cleaning mechanism.
Features
• Dual independent analogue outputs to track two
different interfaces, or clarity simultaneously, with
the one sonar sensor
• Easy to use pre-set calibrations to track specic
density interfaces, eg: oc / uff layer, Bed
• Industrial scum cleaning mechanisms that do not
require maintenance
• Control room graphics of tanks and interfaces via
GosHawk II
• Wide range of communications: Modbus, HART,
Foundation Fieldbus, DeviceNet, Probus DP and
Probus PA
• 3G remote support capability for calibration,
commissioning or technical back-up
• 3 programmable relays.
