Flo-Dar - hydreka

Integrated measuring systems
for the whole water cycle
Non-contact radar flowmeter
Flo-Dar
Standalone or mains power
supply
Precise flow measurement
without contact with the
fluid
Velocity measurement
using radar technology
ATEX version available
Applications
The Flo-Dar area/velocity radar flow meter offers a revolutionary approach to monitoring flow in open channel
systems. It is equipped with two sensors. A radar source measures the surface flow velocity and the associated
ultrasound probe measures the water level.
Flo-Dar is used for the following applications:
o Industrial:
- Monitoring and compliance of rain water,
- Operational waste,
- Factory inlets,
- Factory outlets,
- Non-contact cooling water.
o
Design offices and communities:
- Sewer sanitary evaluation studies,
- Collector systems,
- Capacity studies,
- Combined sewer overflows,
- Inflow and infiltration studies,
- Invoicing/property transfer,
- Factory inlets and outlets.
Measurement Principle
Velocity measurement
The water surface velocity is measured by radar technology. A radar beam is
sent from the sensor to the water surface at the middle of the pipe. A portion of
the signal is reflected at a slightly different frequency. The frequency difference,
called the Doppler frequency, is directly proportional to the flow velocity.
Proprietary algorithms are then used to calculate the mean velocity of the fluid.
Depth measurement
The water depth is measured with an ultrasound pulse echo sensor. An
electronic pulse is sent to the surface of the water, and a portion of the signal is
sent back to the sensor. The return travel time to and from the surface is used
to calculate the distance between the water surface and the sensor. The water
level is deduced according to the sensor installation height.
Flow calculation
The flow rate Q is calculated from the following formula: Q = S x Vm
- S: Water area obtained from the water level,
- Vm: Mean fluid velocity.
Advantages
Precise flow rate measurement
Flo-Dar gives the user precise fluid flow rate measurements over a
wide range of flow rates and for challenging flow condition
applications by measuring the surface velocity of the fluid.
Easy installation and maintenance
Because the sensor is mounted above the fluid flow, the sensor is
easy to install and remove. Moreover, Flo-Dar has ATEX
certification (available as an option), and can therefore be installed
in explosion-hazard areas.
Ideal solution for challenging flow conditions
Flo-Dar operates in most challenging conditions, including flows
with a high solids content, high temperatures, shallow and
corrosive flows, man-made channels, and high velocities up to 6
m/s.
Optional SVS surcharge velocity sensor
In case of surcharge, velocity measurement is handled by Flo-Dar's
optional SVS electromagnetic sensor. The flow sensor provides
constant monitoring with continuous measurement in dry or rainy
weather, with no need for periodic servicing or cleaning of the
sensor.
Technical specifications
Type
Precision
± 0.5%; ± 0.03 m/s
Optional SVS
surcharge
velocity
measurement
Type
Electromagnetic
Level
measurement
Power supply
Radar
Measurement range 0.23 to 6 m/s
Measurement range 0 to 4.8 m/s
Precision
4% of the reading
Type
Ultrasonic
Standard
0 to 1.5 m (dead band 0.1 m)
Extended (option)
0 to 6 m (dead band 0.43 m)
Precision
± 1% of the measurement
With Flo-Station
Mains, supplied by the Flo-Station
With FL900
On battery, supplied by the recorder
Operating temperature
-10 to 50°C
Storage temperature
-40 to 60°C
Protection rating
IP68
Dimensions
160.5 mm x 432.2 mm x 297 mm (standard model)
Weight
4.80 kg
Material
Polystyrene
Connections
9 ml standard, 305 ml maximum
Guarantee
24 months
ATEX option
Available, ask us
Power supply
Outputs
Flo-Station
One contact output proportional to the flow rate or for an alarm
Analogue
4 * 4-20 mA: Flow rate, level, velocity, and surcharge level
Communication
RS232 / USB
Software
Flo-Ware
Material
ABS
Weight
2.3 kg
Dimensions
258 mm x 237 mm x 95 mm
LCD screen (optional)
Flow rate, level, velocity and/or total flow rate
Operating
temperature
FL900
Mains, 12 Vdc
Digital
Without LCD screen
-20 to 50°C
With LCD screen
-10 to 50°C
Guarantee
24 months
Power supply
Battery, 8 to 18 Vdc
Battery life
6 months for 1 measurement/15 minutes
Inputs
1, 2 or 4 (customer choice)
Memory
325,000 data points
Communication
RS232 / USB
Software
FSdata desktop
Material
Weight
ABS
Without batteries
4.5 kg
With batteries
8.2 kg
Dimensions
254 mm x 220 mm x 400 mm
Operating temperature
-18 to 60°C
Protection rating
IP68
Guarantee
24 months
Products available for sales and rental. Please contact us for more information.
Head office:
34, route de Saint Romain
69450 Saint Cyr au Mont d’Or
France
Limonest site:
1, chemin des Vergers – Bât 2A
69760 Limonest
France
Tél. +33 (0)4 72 53 11 53 - Fax +33 (0)4 78 83 44 37 - E-mail : hydreka@hydreka.fr
Flo-Dar V.2 – EN - 05/15 – Hydreka reserves the right to modify product technical characteristics without notice.
Flo-Dar
Velocity
measurement
(standard)