ADFM Velocity Profiling Insertion Flowmeter (Discontinued)

  • Automatic Velocity Profiling
  • Unmatched Accuracy
  • Hot Tap Installation No downtime - ideal for medium to large pipes
  • Wastewater/Dirty Water Applications
Product Options



The ADFM Hot Tap Insertion Flow Meter is a variant of the standard ADFM open channel flow system, combining a unique sensor suitable of insertion into full, operating pipes and ADFM pulse Doppler profiling technology. It can provide accurate flow rate measurement in full and pressurised pipes with diameters of 18" (460mm) or greater, and is ideal for the difficult hydraulic conditions found in applications such as force mains, process lines and siphons.

The ADFM Hot Tap Insertion meter is constructed of robust materials which provide years of worry free operation. Installation is quick and straight-forward via an industry standard 2" tap through the wall of the pipe. This also provides easy access to the sensor for maintenance and inspection.

The Hot Tap's velocity profiling technology measures flow rate with an accuracy of +/-2% of rate, even in difficult installations such as near bends or pumps etc. The sensor uses standard ADFM electronics for data collection, processing and storage. If you are already familiar with the standard ADFM system, operating the Hot Tap system will be easy and intuitive, with all standard ADFM software, interface and communication equipment available for the ADFM Hot Tap.

Standard Features

  • ADFM pulse doppler profiling technology
  • Data quality verification information
  • 4x redundant sensors in one housing
  • Real-time data output
  • Rugged construction
  • Never requires in-situ calibration

Manufactured by: Teledyne ISCO
Model: ADFM Velocity Profiling Insertion Flowmeter (Discontinued)

Services offered for this product

  • Sales
  • Rental
  • Installation
  • Calibration
  • Maintenance


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


ADFM Hot Tap Measurement Performance - Flow Rate
Flow Accuracy 1-2% of reading
ADFM Hot Tap Measurement Performance - Velocity
Velocity Range ±30.0 ft/s (± 9 m/s)
Velocity Bin Size 2 to 12 inches (50 to 300 mm) user selectable
Vertical Profiling Range 9 to 108 in (230 mm to 2.7m) nominal, for particle concentrations of 50-1000 ppm
Pipe Sizes 18 to 108 inches (460 mm to 2.7 m)
Velocity Accuracy 0.5% of reading ± 0.01 ft/s (3.0 mm/s)
ADFM Hot Tap Acoustic Frequency
Frequency 1.23 MHz
Physical - ADFM Hot Tap Electronics Unit
Electronic Unit Configurations Cylindrical canister or wall-mount box
Operating Temperature -15 to 125°F (-26 to 52°C)
Storage Temperature (-65) to 160°F (-54 to 71°C)
Packaging NEMA 6P (IP 68) for canister; NEMA 4X for box
Dimensions Canister - 28.5x10 in. (724 x 254 mm); Box - 17.5x14.8x6.7 in (445x375x170 mm)
Weight Canister Housing 36 lbs (16 kg); Box Housing 24 lbs (11 kg)
Physical - Hot Tap Insertion Sensor
Operating Temperature 23 to 95°F (-5 to 35°C)
Housing Material Plastic transducer assembly on corrosion resistant stainless steel stem
Enclosure NEMA 6P (IP 68), tested at submersion to 20 feet of depth for 48 hours
Static Pressure 50 psi Nominal
Dimensions 1.375 in (35 mm) diameter with standard stem length of 24 in (610 mm); fits 2 in (50 mm) standard tap
Weight (including 50 ft cable) 15 lbs (6.8 kg)
Physical - Hot Tap Sensor Signal Cable
Operating Temperature -40 to 125°F (-40 to 52°C)
Physical Polyethylene jacket
Length 50 ft (15 m) std. Optional 100 ft length (30 m) available.
Minimum Bend Radius 6 in (150 mm)
Outer Diameter 0.5 in (13 mm) nominal
ADFM Hot Tap Data Types
Q, V, D Discharge, average velocity, depth
Velocity Velocity profile data (relative to acoustic beam directions) per beam and bin
Echo Intensity Echo intensity data (relative backscatter intensity) per beam and bin
Data Quality Profile data quality indicators (Correlation magnitude, % - Good) per beam and bin
Temperature Transducer temperature output range 20 to 125°F (-7 to 52°C)
Sound Speed One output for speed of sound data
Leader Output of general leader information (time, data, record number, etc.) Col five
Data Storage and I/O
Data Storage Capacity 32 MB std. (300,000 measurements); up to 440 MB optional
Data I/O Interface RS-232 standard. Multiple industry-standard analog and digital protocols optionally available.
Data Transfer Rate Configurable to 57,600 bps
Internal Battery Voltage 24 VDC nominal
Internal Battery Capacity 26 Ah at 75°F (24°C) Alkaline. Battery life 22 weeks at 15 minute sampling interval
External DC 12 - 36 VDC; 10 VDC absolute minimum; 36 VDC absolute maximum
Compatible Software WinADFM Software for Windows 98, 2000, NT, XP


Related products