Panametrics AT868 Clamp On Flowmeter

  • Industry Leading Clamp On Flow Meter Cost Effective
  • Dual Channel Versions Available
  • Wide range of liquids, 13-7600mm diameter
  • IN STOCK. Next Day Delivery
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Please note that the AT868 single channel version has now been discontinued and replaced by the AT600. The dual channel version is still available.

The AT868 flow meter combines state of the art ultrasonic flow measurement capability with a low-cost transmitter package that can be installed right at the process measurement point. It's designed specifically for water and wastewater applications in full pipes.

The AT868 ultrasonic flowmeter is offered with wetted or dry clamp-on transducers for convenience. Wetted transducers offer accuracies better than 1%. The AT868 clamp on flowmeter has no moving parts and requires minimal maintenance. An onboard microprocessor used patented Correlation Transit TimeTM technology for long-term drift-free operation. Automatic adjustment to changing fluid properties and dynamically configured operating software simplify programming.

The AT868 can also be used in conjunction with Heat Meters to enable energy calculations.

Please contact our sales engineers for pricing for sales and installation.

Manufactured by: Panametrics
Model: Panametrics AT868 Clamp On Flowmeter

Services offered for this product

  • Sales
  • Rental
  • Installation
  • Calibration
  • Maintenance


Potable water
Discharge Water
Cooling and heating water
Other liquids


Operation and performance
Fluid types Acoustically conductive fluids, including most clean liquids, and many liquids with entrained solids or gas bubbles. Maximum void fraction depends on transducer, interrogation carrier frequency, path length and pipe configurations
Pipe sizes Clamp-on transducers: 12.7 mm to 7.6m (0.5 to 300 in.) and larger
Wetted transducers: 25.4 mm to 5 m (1 in to 200 in) and larger
Pipe-wall thickness Up to 76.2 mm (3 in)
Pipe materials All metals and most plastics. Consult RS Hydro for concrete, composite materials, and highly corroded or lined pipes.
Flow accuracy (velocity) 0.5% of reading (achievable with process calibration)
Typical clamp-on flow accuracy (velocity) Pipe ID >150 mm (6 in): ±1% to 2% of reading
Pipe ID <150 mm (6 in): ±2% to 5% of reading
Typical wetted flow accuracy (velocity) ±1% of reading
Accuracy depends on pipe size and installation and whether measurement is one-path or two path.
Repeatability ±0.1% to 0.3% of reading
Range (bidirectional) -12.2 to 12.2 m/s (-40 to 40 ft/s)
Rangeability (overall) 400:1
  Specifications assume a fully developed flow profile (typically 10 diameters upstream and 5 diameters downstream of straight pipe run) and flow velocity greater than 0.3 m/s (1 ft/s).
Measurement parameters Volumetric flow, totalized flow and flow velocity
Flow measurement Patented correlation transit-time mode
Enclosures Epoxy-coated aluminum weatherproof type 4X/IP66
Dimensions Standard: Weight 0.9 kg (2 lb), size (h x w x d) 184 mm x 150 mm x 89 mm (7.25 in x 5.9 in x 3.5 in)
Channels Two channels (for two pipes or two-path averaging)
Display 2-line x 16 character backlit LCD display, configurable to display up to four measurement parameters in sequence
Keypad Six-button internal keypad
Power supplies Standard: 85 to 265 VAC, 50/60 Hz
Optional: 12 to 28 VDC, ± 5%
Power consumption 20 W maximum
Operating tempe°rature -10°C to 55°C (14°F to 131°F)
Storage temperature -40°C to 70°C (-40°F to 158°F)
Standard inputs/outputs One 0/4 to 20 mA isolated output per channel, 600 Ω maximum load
One frequency/pulse rate/totalizer output per channel, optically isolated, 3A maximum, 100 VDC maximum, 1W maximum, from 0.1 to 10 kHz
Namur NE043 compliant
Digital interfaces Standard: RS232
Optional: RS485 (multiuser)
European compliance System complies with EMC Directive 89/336/EEC, 73/23/ EEC LVD (Installation Category II, Pollution Degree 2) and transducers comply with PED 97/23/EC for DN<25
Clamp-on ultrasonic flow transducers
Temperature ranges Standard: -40°C to 150°C (-40°F to 302°F)
Optional: -200°C to 400°C (-328°F to 752°F)
See specific transducer for exact temperature range.
Mountings Stainless steel chain or strap, welded or magnetic clamping fixtures
Area classifications Standard: general purpose
Optional: weatherproof type 4/IP65
Optional: submersible IP67/68
Additional options
PanaView™ PC-interface software The AquaTrans AT868 communicates with a PC through a serial interface and Windows® operating systems.
Consult the manual for details on sites, logs, and other operations with a PC.


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