Online effluent quality monitoring system
Model SYZE-OCEMS-8P, made in India
A multi-parameter optical analyser, a pH electrode assembly, an electromagnetic flow meter and a sealed data logger panel. The panel reads every instrument over Modbus RTU, shows the readings on site, stores them in its own memory and uploads them continuously to the pollution control board portals and to our monitoring server.
All eight parameters are supplied as standard, not four with the rest chargeable.
- COD
- BOD
- TSS
- pH
- TOC
- Turbidity
- Temperature
- Flow
At the outfall
Parameters measured
Ranges can be set to the consented limits for your outfall.
| Parameter | Range | Measurement principle |
|---|---|---|
| COD | 0–1000 mg/L | UV–visible absorption spectroscopy (probe) |
| BOD | 0–1000 mg/L | Derived from the UV–Vis spectrum; BOD:COD correlation set at commissioning against your laboratory results |
| TSS | 0–1000 mg/L | UV–visible absorption / optical scatter (probe) |
| pH | 0–14 | Glass electrode with automatic temperature compensation |
| TOC | 0–1000 mg/L | UV–visible absorption spectroscopy (probe) |
| Turbidity | 0–1000 NTU | Light scatter, 90° detection (probe) |
| Temperature | 0–50 °C | PT100 RTD, integral to the probe |
| Flow | As per site | Electromagnetic flow meter on the outfall line |
Paired with the OCEMS data logger
The analyser measures; the data logger records and reports. The probe, the pH electrode and the flow meter each connect to their own RS485 port on the SYZE OCEMS Data Logger, which reads them over Modbus RTU, stores every reading and uploads continuously to the board portals and to the SYZE platform.
Both are supplied and commissioned together as one system, with one party responsible for both.
What this system does differently
- A failed instrument is visible, not hidden
- If an analyser stops responding the panel says so and records a zero. It never carries on showing the last good reading - the common failure in this class of equipment, and the reason a plant can run for weeks believing it is monitored.
- An outage costs no data
- If the internet link fails, readings continue to be taken and stored, then upload in order when the link returns.
- Each board's own format and cadence
- CPCB receives a fifteen-minute average aligned to the quarter hour as ODAMS requires; the State Board receives readings at its own cadence. Neither the panel nor your staff has to know the difference.
- Append-only records
- Submission logs and alarms are written once and not edited afterwards. A record that can be adjusted is worth little when a board disputes receipt.
- One probe, six parameters
- COD, BOD, TSS, TOC, turbidity and temperature come from one multi-parameter optical probe. pH and flow are separate instruments on their own ports.
- Correctable without a site visit
- Settings, calibration values, alarm limits and software can be checked and corrected remotely, so most faults are cleared the day they are reported.
Data transfer and reporting
- Three independent destinations
- CPCB, the State Board and any third-party destination are configured separately. A station, data logger or single parameter can be switched on or off for one board without affecting the others.
- Every push recorded
- Each submission is logged with its time, destination, the exact data sent and the reply received. When a board says data was not received, the record supports or refutes it.
- Automatic retry
- A failed submission is retried at increasing intervals, so a portal being down for an hour does not cost the hour. Readings past the boards' seven-day acceptance rule are retired rather than left blocking newer ones.
Site requirements at your end
What we ask the plant to have ready before installation.
- Power socket, 230 V AC, 5 A, near the installation point, with earthing
- A 1 kVA online UPS for uninterrupted operation during supply failure
- Internet by LAN cable (RJ-45) from the router, or a mobile SIM with reliable coverage
- Installation within 5–7 m of the outlet sampling point; beyond that, a 30–40 litre storage tank with a recirculation pump below the system
- Weatherproof wall space about 3 ft wide × 5 ft high, near the outfall
- Mechanical, electrical and helper manpower during installation
- Consent order, outfall details and station particulars for registration on the board portals
Frequently asked questions
What is the difference between a pH sensor and a multi-parameter probe?
A pH sensor measures one value with a glass electrode. The multi-parameter optical probe measures COD, BOD, TSS, TOC, turbidity and temperature together by UV–visible absorption and light scatter, with no reagents. Both are used: the probe for the six optical parameters, a separate electrode for pH.
Are the readings accepted by CPCB and the State Board?
Yes. The system is registered and configured on the board portals as part of the installation, and commissioning is complete only when live data has been seen on both portals.
How is BOD measured continuously when the laboratory test takes five days?
BOD is derived from the UV–visible spectrum using a BOD:COD correlation set at commissioning against your own laboratory results for that outfall, which is how continuous BOD is reported in practice.
What happens if an instrument or the internet fails?
A silent instrument is recorded as zero and flagged rather than repeating its last value. A broken internet link does not stop logging - readings are stored on the panel and uploaded in order when the connection returns.
See it working
We will demonstrate a working unit at your convenience and at no obligation, with our engineers available to answer technical questions directly.