The
sensor on the Isco 4250 uses patented Doppler technology to
directly measure average velocity in the flow stream. An integral
pressure transducer measures liquid depth to determine flow
area. The 4250 then calculates flow rate by multiplying the
area of the flow stream by its average velocity.
The 4250 gives you greater accuracy in applications where weirs
or flumes are not practical, or where submerged, full pipe,
surcharged and reverse flow conditions may occur. And you don’t
have to estimate the slope and roughness of the channel.
Easy Setup: The 4250’s Doppler system eliminates
the problems associated with electromagnetic probes. Isco’s
new Doppler system continuously profiles the flow stream. This
saves you time by eliminating profiling and calibration required
by electromagnetic systems.
Maintenance-free: The streamlined 4250 sensor sheds debris
and with-stands corrosive flow stream chemicals. And, unlike
electromagnetic probes, the sealed Isco sensor resists fouling
by oil and grease, so you’re not bothered with frequent
cleanings. You can count on the Isco 4250 for long-term, dependable
operation. |
The 4250
Area Velocity Flow Meter is ideal for sites where submerged,
full pipe, surcharged or reverse flows may occur.
 |
| Isco
offers both Standard and Low Profile Area Velocity Sensors to
meet your specific needs. The Standard Sensor (left) is more
suitable for use in larger pipes and in turbid flows with high
concentrations of suspended solids and entrained air, and may
be less susceptible to silting. |
The
Low Profile Sensor senses velocity in flows typically down to
1" (25mm) in depth, while its streamlined design minimizes
flow stream obstruction. In addition, encapsulation in epoxy
provides improved chemical compatibility. |
