Sigma Model 920 Portable System
Sigma Model 920 Area Velocity Flow Meter
The Sigma 920 Area Velocity Flow Meter can be used in portable or permanent applications and is available with up to two independent level/velocity channels. You can measure level and velocity in two channels or velocity in one and level in another. And, with Hach Sigma´s pager communication, you can be alerted to overflows, bypasses, or a change in the flow pattern. Choose from submerged pressure transducer/velocity sensor or American Sigma In-Pipe Ultrasonic Depth Sensor combined with a "wafer-thin" velocity sensor that provides greater accuracy in shallow flows.
System Benefits Include:
- Multiple sensors for redundancy, averaging and multiple pipe monitoring.
- Easy installation with fast setup and no velocity calibration required.
- Sampler pacing capabilities, ideal for CSO and storm water.
- Optional rainfall logging feature records and characterizes rain events, a true innovation in water monitoring.
- NEMA 6P sealed to withstand submergence and prolonged surcharge conditions.
- Low power draw creates an extended 90-day battery life.
- Advanced, ultrasonic one-MHz Doppler technology avoids signal dropouts and ensures high levels of accuracy in low-flow, full-pipe, or reversed-flow conditions, without the need for on-site calibration.
- A higher level of accuracy, since the Sigma 920 automatically corrects the effects of temperature on level measurement.
- Patented "Drawdown Correction" feature corrects the effects of velocity on accurate level measurement.
Ideal Applications include:
- Short Term Flow Studies
- Sanitary Sewer Evaluation Studies
- CSO Studies and Monitoring
- NPDES Stormwater Compliance
Sigma Model 920 Data Sheet
Sensors
Submerged Area/Velocity
Ultrasonic Downlooking
In-Pipe Ultrasonic
Wafer Velocity Flow
Compatible Software
Rentals Available
