Effluent flow measurement
Flow turns concentrations into loads, and every OCEMS station reports it
Flow turns concentrations into loads: the same COD means twice the pollution at twice the flow, and every OCEMS station reports it. In the SYZE-OCEMS-8P it comes from an electromagnetic flow meter on the outfall line, or from a Parshall flume with an ultrasonic level probe where the outfall is an open channel.
- SYZE-OCEMS-8P
- One of 8 parameters as standard
- CPCB
- HSPCB
- PPCB
At a glance
Supplied as part of the SYZE-OCEMS-8P, with all eight parameters as standard.
- Parameter
- Flow and daily volume
- Range
- Sized to the site
- Method
- Electromagnetic (full pipe) or Parshall flume with ultrasonic probe (open channel)
- Instrument
- The flow meter of the SYZE-OCEMS-8P, on its own RS485 port
- Reagents
- None
- Output
- RS485 Modbus to the SYZE data logger
- Reported to
- CPCB, HSPCB, PPCB and PHED
Getting flow right
- Full pipe
- An electromagnetic meter where the outfall pipe always runs full.
- Open channel
- A Parshall flume with a non-contact ultrasonic probe where it does not.
- Inlet, outlet and bypass
- Many PHED tenders ask for flow on the inlet and the outlet; bypass lines are measured too.
- Volumes in the reports
- Daily and monthly volumes in the dashboard's reports.
Questions
A pipe meter or a flume?
It depends on the outfall: a pipe that runs full takes an electromagnetic meter, an open channel a flume.
Can an existing flow meter be used?
Often yes, if it gives its readings over Modbus; we check it on site.
The analyser and the other parameters
- Online water quality analyser (8 parameters)Our main product: eight parameters as standard, made in India
- COD analyserChemical oxygen demand measured continuously at the outlet, without reagents
- BOD analyserContinuous BOD at the outlet, when the laboratory test takes three days
- TSS analyserTotal suspended solids measured continuously, by optical absorption and scatter
- pH analyserpH at the outlet on its own port, with automatic temperature compensation
- TOC analyserTotal organic carbon from the same UV–visible spectrum, as standard
- Turbidity analyserHow clear the effluent is, measured continuously as scattered light
- TemperatureA PT100 sensor built into the optical probe
Further reading
See it working
Send us the outfall's pipe size or channel width and we will propose the flow measurement.