ADFM Velocity Profiling
ADFM Velocity Profiling

ADFM Velocity Profiling
ADFM Velocity Profiling
ADFM Velocity Profiling
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

ADFM Velocity Profiling
Automatic Velocity Profiling
Unmatched Accuracy
Hot Tap Installation
Wastewater / Dirty Water Applications

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
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)
NEMA 6P (IP 68) for canister; NEMA 4X for box
Canister - 28.5x10 in. (724 x 254 mm); Box - 17.5x14.8x6.7 in (445x375x170 mm)
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
NEMA 6P (IP 68), tested at submersion to 20 feet of depth for 48 hours
Static Pressure
50 psi Nominal
1.375 in (35 mm) diameter with standard stem length of 24 in (610 mm); fits 2 in (50 mm) standard tap
(including 50 ft cable)
15 lbs (6.8 kg)