Water and Wastewater


​accQpulse Deep Water Sensor

​accQpulse Shallow Water Sensor

​Dimensions8 x 3.6 x 1.5 in (203 x 91 x 38 mm)
10.5 x 2.3 x 0.6 in (267 x 57 x 16 mm)
​Flow Accuracy
​​2.0% of reading​​2.0% of reading
​Maximum Velocity
​± 20 ft/s (± 6 m/s) at depths less than 30 in (0.8 m)
± 7 ft/s (± 2.2 m/s) at depths from 30 in (0.8 m) to 33 ft (10 m)
​± 30 ft/s (± 9 m/s) at depths less than 30 in (0.8 m)
± 10 ft/s (± 3 m/s) at depths from 30 in (0.8 m) to 48 in (1.2 m)
​Velocity Bin Size
​1 to 4 in (25 to 100 mm)
​0.4 in (10 mm)
​Vertical Profiling Range
​6 inches to 16 ft (150 mm to 4.9 m)
​3 to 40 in (75 mm to 1 m)

​For a full list of product specifications, see the datasheet.



When you purchase instruments from Teledyne ISCO, you not only receive innovative, high quality products, you also receive excellent customer service and product support. Your initial purchase is only the beginning of Teledyne ISCO's ongoing commitment to their customers.

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Software and Firmware Updates


Flow Monitoring Product Guide BrochureBrochure
Teledyne ISCO Water & Wastewater Product GuideBrochure
accQpulse Velocity Profiler DatasheetDatasheet
accQmin Installation GuideInstruction Sheet
accQpulse Installation Instruction SheetInstruction Sheet
accQmin Velocity Profiling System User ManualUser Manual
accQpulse User ManualUser Manual


​accQpulse™ Velocity Profiler

Accurate flow measurement in shallow and deep water applications

The accQpulse™ Velocity Profiler brings unparalleled measurement precision and accuracy to flow rate measurement in many sizes of pipes and open channels. Its unique ability to measure velocity at multiple points makes it suitable for most applications including sites with non-uniform, rapidly changing, near zero, or reverse flow conditions. These applications include: wastewater collection systems, billing, combined sewer systems and outfalls, wastewater treatment facilities, irrigation canals, industrial discharges, and stormwater conveyance and outfalls.

With sensor options for both shallow and deep water, the accQpulse Velocity Profiler is the only flexible pulse-Doppler flow meter available. The shallow water sensor is used to measure flow in depths up to 48 inches (1.2m). The deep water sensor is used to measure flow in depths up to 16 feet (4.9m)

Standard Features

  • Pulse Doppler velocity profiling technology
  • Tri-redundant velocity sensors and depth sensor combined in a single housing
  • Data quality verification information (signal strength and correlation)
  • Chemically resistant polyurethane encapsulated sensor withstands abuse, resists oil and grease fouling, and eliminates the need for frequent cleaning
  • Rugged, submersible enclosure meets IP 68 protection rating


  • Wastewater collection systems
  • Combined sewer systems and outfalls
  • Wastewater treatment facilities
  • Irrigation canals and channels
  • Industrial process and discharges
  • Stormwater conveyance and outfalls

Options and Accessories

  • Secondary pressure sensor for redundant level measurement
  • Flow conditioning platform for shallow water sensor
  • Sensor fairing for deep water channels where sediment or debris are present
  • acccQcom digital/analog interface module for 4-20 mA, RS-232/422, MODBUS, and Ethernet interface
  • Remote cell phone communications