Portable Area Velocity Flow Meter with 1 Submersible Area Velocity Sensor

• Low-profile probe reduces maintenance and is detachable/interchangeable for ultimate flexibility.
• Easy installation with a small, 4½ in. diameter and no velocity calibration required.
  NEMA 6P sealed to withstand submergence and prolonged surcharge conditions.
• Advanced, ultrasonic on-MHz Doppler technology avoids signal dropouts and ensures, without the need for on-site calibration, high levels of accuracy in low-flow, full-pipe, or reversed-flow conditions.
• A higher level of accuracy, since the 910 Portable Area Velocity Flow Meter automatically corrects the effects of temperature on level measurement.
• Patented `Drawdown Correction´ feature corrects the effects of velocity on accurate level measurement.

Ideal for:

• Short Term Flow Studies
• Sanitary Sewer Evaluation Studies

Specification Sheet | Manual

Portable Area Velocity Flow Meter, Two Sensor Capability

• 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 for:

• Short Term Flow Studies
• Sanitary Sewer Evaluation Studies
• CSO Studies and Monitoring
• NPDES Stormwater Compliance

Specification Sheet | Manual

Long-Term Portable Area Velocity Flow Meter, Three Sensor Capability

• Multi-point and/or redundant monitoring with a single meter.
• Up to three level and velocity sensors.
• Low power draw creates an extended year-long battery life.
• Optional rainfall logging feature records and characterizes rain events, a true innovation in water monitoring.
• Optional internal modem automates data retrieval, paging and reporting.
• Optional sampler pacing capabilities, ideal for CSO and Storm-water.
• NEMA 6P sealed to withstand submergence and prolonged surcharge conditions.
• 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 930 automatically corrects the effects of temperature on level measurement.
• Patented drawdown correction feature corrects the effects of velocity on accurate level measurement.
  Multiple sensors for redundancy, averaging and multiple pipe monitoring.

Ideal for:

• Long-Term Flow Monitoring
• Sanitary Sewer Evaluation Studies
• CSO Studies and Monitoring
• NPDES Storm-water Compliance
• Permanent Collection System Monitoring

Specification Sheet | Manual

Intrinsically Safe Portable Area Velocity Flow Meter

With quick installation and minimum maintenance, the Sigma 911 Portable Area Velocity Flow Meters ideal for short-term flow studies in hazardous or potentially hazardous environments. American Sigma´s advanced Doppler technology is accurate, even in low-flow, full-pipe, and reversed-flow conditions. There is no need for profiling to establish accurate average velocity. The Sigma 911 accuracy is further enhanced by a proprietary technology that corrects for the effects of temperature and velocity on level measurement.

• CSA-NRTL/C certified for operation in Class 1, Division 1, Groups C & D hazardous locations, DEMKO listed.
• Low profile, non-fouling probe reduces your need for maintenance and is detachable/interchangeable for ultimate flexibility.
• Easy installation with a slender 6.5" in. diameter and no profiling required.
  NEMA 6P sealed to withstand submergence and prolonged surcharge conditions.
• Advanced, ultrasonic one-MHz Doppler technology avoids signal dropouts and ensures, without the need for on-site calibration, high levels of accuracy in low-flow, full-pipe, or reversed-flow conditions.
• A higher level of accuracy, since the Sigma 911 Portable Area Velocity Flow Meter automatically corrects the effects of temperature on level measurement.
• Patented `Drawdown Correction´ feature corrects the effects of velocity on accurate level measurement.

Ideal for:

• Short Term Flow Studies in Hazardous or Potentially Hazardous Areas
• Sanitary Sewer Evaluation Studies
• CSO Studies and Monitoring

Specification Sheet | Manual

Area Velocity Flow Meter, Intrinsically Safe

The American Sigma 940 Intrinsically-Safe Flow Meter supports dual sensors, interfaces with samplers, has a long battery life, and offers increased data storage and optional modem capability.

The American Sigma 940 Flow Meter is the safest investment for your sewer and your budget. With the 940, remote monitoring becomes a way of life. Its rugged design, low-profile probes and long battery life significantly reduce site visits. Choose up to two area velocity sensors, or one area velocity and one level backup. Whether you're experiencing redundancy in a single pipe or level and velocity in separate pipes, you´ll profit from new performance levels in a single meter.

Industry standard MODBUS ASCII protocol has been incorporated into the American Sigma 940 Flow Meter. The implementation of the MODBUS protocol will allow your MMI, SCADA or DCS system to directly communicate with the 940 Flow Meter without the use (or additional cost) of a PLC. Now you can have real-time, read-only access to all available data channels in the 940 Flow Meter.

• CSA-NRTL/C DEMKO listed and certified for operation in Class I, Division I, Groups C & D hazardous locations.
• Multiple sensors for redundancy, averaging and multiple pipe monitoring.
• Telephone and pager alarms for quick notification of system changes.
• Low power draw, with a long, one-year battery life.
• NEMA 6P sealed to withstand submergence and prolonged surcharge conditions.
• Sampler pacing capabilities, to document the extent of overflow problems.
• 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 940 automatically corrects the effects of temperature on level measurement.
• Patented Drawdown Correction feature corrects the effects of velocity on accurate level measurement.

Ideal for:

• Long Term Flow Monitoring in Hazardous or Potentially Hazardous Areas
• Sanitary Sewer Evaluation Studies
• CSO Studies and Monitoring 

Specification Sheet | Manual

The American Sigma  950 and 950 AV Series Flow and Water Quality Meter provide portable and/or permanent single-channel monitoring plus water quality testing, process control interface, and a digital display. The American Sigma 950 and 950 AV Optiflow models offer maximum flexibility for multiple applications. Up to three different level sensor technologies and velocity are available in one meter.

For applications requiring more than flow, the 950 optionally monitors rainfall, pH, temperature, ORP, dissolved oxygen and/or conductivity. In addition, the 950 has analog inputs for datalogging from other instruments, for example, total suspended solids monitors. You can also control samplers, pumps, or other equipment based on flow or selected parameter(s) exceeding high/low set points with relay outputs.

Meters in the American Sigma 950 Series are versatile to meet your needs - customize your meter to specific site conditions easily. The large LCD graphics display lets you quickly see the information you need quickly, on-site, in your choice of 10 languages, and without the inconvenience of outdated paper charts; you´ll no longer need to replace pens, paper, or service mechanical recorders.

Industry standard SCADA MODBUS ASCII protocol is included in the American Sigma 950 Flow Meter Series. 4-20 mA outputs are also available: this allows flexible  integration with a SCADA system. You can have real-time, read-only access to all available data channels in the 950 Flow Meter.

Ideal for:

• Long Term or Permanent Flow Studies
• Sanitary Sewer Evaluation Studies
• CSO Studies and Monitoring
• NPDES Stormwater Compliance
• Industrial Compliance Monitoring
• Applications involving frequent moving of meter to different site conditions

Models available:

SIGMA 950 Submerged Pressure Flow Meter

SIGMA 950 Bubbler Flow Meter

SIGMA 950 Optiflo Flow Meter

Specification Sheet | Manual (email us to get it)