The FlowCERT LITE open channel flow meter is a state of the art ultrasonic flow metering and control system which provides comprehensive flow monitoring with data logging (optional) and control functions for a complete range of flumes, weirs and channels.


  • Ideal for open channel flow measurement with flumes or weirs
  • Easy installation, simple menu-driven setup
  • Meets BS3680 open channel flow standard
  • Proven non-contacting ultrasonic technology
  • Large on-board memory gives 1 year log at 15min intervals (optional)
  • Modbus and Profibus options


Outside dimensions:
235 x 184 x 120mm (9.25 x 7.24 x 4.72in)
Nominal 1kg (2.2lbs)
Enclosure material/description:
Polycarbonate, flame resistant to UL94-V2
Cable entry detail:
10 cable entry knock outs, 5 x M20, 1 x M16 underside, 4 x PG11 (18mm/0.71in) at rear
Transducer cable extensions:
2-core screened
Maximum separation:
1000m (3,280ft) 
IP Rating (Wall):
Max. and min. temperature (electronics):
-20ºC to +50ºC (-4ºF to +122ºF)
Flammable atmosphere approval:
Safe area: compatible with approved dB transducers
CE Approval:
See EC Declaration of Conformity in the manual
UL Listed. UL Listed to Canadian safety standards. Certificate Number E257330.
0.1% of the measurement range (dB3 and external temperature compensation)
0.5mm (dB3 and external temperature compensation)
Max. range:
Dependent upon application and transducer (maximum 15m/49ft)
Min. range:
Dependent upon application and transducer
Rate response:
Fully adjustable
DATEM (Digital Adaptive Tracking of Echo Movement)
Analogue output:
Isolated (floating) output (to 150V) of 4-20mA or 0-20mA into 500Ω (user programmable and adjustable) 0.1% resolution
Digital output:
Full Duplex RS232
Volt free contacts:
5 form “C” (SPDT) rated at 5A at 115V AC
6 digits plus 12 character text, plus bargraph with direction indicators, remote communicator identifier and program/run/test mode indicators
On-board programming:
By integral keypad
PC programming:
Via RS232
Programming security:
Via passcode (user selectable and adjustable)
Programmed data integrity:
Via non-volatile RAM, plus backup
Power supply:
115V AC + 5%/ -10% 50/60Hz, 230V ac + 5%/-10% 50/60Hz, 22-28V DC
10W maximum power (typically 6W)