Combined Sewer Overflow (CSO)

Level measurement in the stormwater overflow chamber

Application

Large Combined Sewer Overflows (CSO’s) protect the wastewater treatment plant from a capacity overload during heavy rain. The precipitation is temporarily stored and then delivered to the treatment plant at a reduced rate. If the stormwater basin cannot hold the accumulating quantities of water, part of it will be discharged. Due to legal requirements, such operational events and discharged water quantities have to be measured and documented.

Recommended Products

VEGAPULS WL 61

Non-contact level measurement provides basis for documentation of impounding and discharging events

Non-contact, maintenance-free measurement
Small dead band allows measurement up to the ceiling
High accuracy allows measurement of discharge volume with one sensor
Reliable full signal even if sensor is inundated

Measuring range - Distance

15 m

Process temperature

-40 ... 80 °C

Process pressure

-1 ... 2 bar

VEGAMET 391

Signal conditioning and display instrument for level and discharge volume

Display and storage of the impounded volume
Calculation of the discharge volume
Data transmission over Ethernet or analogue 4 ... 20 mA

Protection rating

IP 20/IP 65

Input

1 x 4 … 20 mA/HART sensor input

with transmitter power supply

Output

1 x 0/4 … 20 mA current output

up to 6 x operating relay

1 x fail safe relay

1 x Ethernet or 1 x RS232

Hydrostatic level measurement as an alternative: VEGAWELL 52

Hydrostatic level measurement for continuous monitoring of impounding and discharging events

High accuracy and operational reliability
Long-term stability thanks to ceramic measuring cell
Very simple setup and commissioning

Measuring range - Pressure

0 ... 60 bar

Process temperature

-20 ... 80 °C

Process pressure

-

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