Drexel manufactures India's most trusted BOD, COD, and pH Analyzers — delivering real-time effluent quality data, automated CPCB data transmission, and continuous compliance monitoring for industrial and municipal wastewater plants across Delhi and India.
A BOD, COD, and pH Online Analyzer is a continuous, automated instrument that measures key pollution indicators in industrial effluent or sewage treatment plant (STP) discharge — without manual sampling or laboratory delays.
Drexel's DX4P-W / DX4P-WP series uses dual-beam UV-visible spectrophotometry and glass electrode technology to deliver accurate, real-time readings every few seconds, transmitting data directly to CPCB/SPCB servers as mandated by Indian environmental regulations.
The DX4P series monitors a comprehensive panel of water-quality parameters — all in real time, from a single compact analyzer panel.
Biochemical Oxygen Demand — measures organic pollution load via UV spectroscopy
0–2,000 mg/LChemical Oxygen Demand — detects total oxidisable organic matter in effluent
0–5,000 mg/LReal-time acidity/alkalinity monitoring via glass electrode method
0–14 pHTotal Suspended Solids — continuous turbidimetric measurement in wastewater
0–10,000 mg/LDissolved Oxygen — fluorescence-based measurement for aeration control
0–20 mg/LElectrode-based conductivity and total dissolved solids monitoring
0–200 mS/cmContinuous effluent temperature logging for process and compliance records
0–60 °CColorimetric detection of phosphate species for nutrient-load monitoring
0–50 mg/LBoth probe-type (DX4P-WP) and extractive-type (DX4P-W) BOD COD pH Analyzers share the same high-precision measurement core with field-proven reliability.
| Parameter / Feature | Specification | Notes |
|---|---|---|
| BOD / COD / TSS Principle | UV-Visible Spectroscopy (Dual Beam) | Non-reagent, maintenance-friendly |
| pH Measurement Principle | Glass Electrode Method | High-precision, temperature compensated |
| DO Measurement Principle | Fluorescence | Membrane-free, longer sensor life |
| Chlorine Principle | Ion Selective Permeation Membrane | Residual & free chlorine |
| Phosphate Principle | Colorimetric | Ortho & total phosphate |
| Response Time | < 10 seconds | Real-time process feedback |
| Accuracy / Linearity | ± 5% FS | Per ISO 15839 |
| Repeatability | < ± 5% | — |
| Operating Temperature | 0 °C to 46 °C | Ambient: 0–60 °C |
| Analog Output | 4–20 mA | Per parameter, isolated |
| Digital Output | RS-485 Modbus RTU | CPCB/SPCB server-ready |
| Display / HMI | 15" built-in (optional 7" touch screen) | Auto-start on power-on |
| Power Supply / UPS | 230 V AC / Online UPS < 3 kVA | UPS in customer scope |
| Cabinet / IP Rating | SS316 IP65 wall-mount or rack | Outdoor-ready option available |
| Data Storage | Up to 2 years on remote server | Cloud & local backup |
| Certifications | TÜV, CE, ISO 9001, ISO 14001 | CPCB/SPCB approved |
Over 1,000 successful installations, certified quality standards, and dedicated local support make Drexel the preferred effluent monitoring partner for industries across Delhi and NCR.
Automated data push to Central Pollution Control Board servers — ensures zero compliance penalties and seamless audit readiness.
Periodic automatic cleaning cycle and DM/RO water calibration drastically reduce sensor fouling and manual maintenance downtime.
ISO 9001:2015, ISO 14001:2015, and TÜV-CE certified manufacturing ensures measurement accuracy you can trust under regulatory scrutiny.
Standard 4–20 mA and RS-485 Modbus RTU outputs integrate seamlessly with any existing SCADA, DCS, or PLC system without additional hardware.
Dedicated service engineers in Delhi provide fast on-site installation, commissioning, and AMC support for all BOD COD pH Analyzer systems.
Start with BOD/COD/pH and add NH₄, turbidity, chlorine, or flow meters — the modular DX4P platform grows with your monitoring needs.
Our online water quality monitoring solutions serve a wide spectrum of industrial and municipal sectors requiring continuous effluent parameter tracking and regulatory compliance.
Pharmaceutical & API Manufacturing
Textile & Dyeing Units
Chemical & Petrochemical Plants
Food & Beverage Processing
Municipal STP — Smart Cities
River & Lake Quality Monitoring
Aquaculture & Fish Farming
Electronic & Semiconductor Plants
Drinking Water Treatment Plants
Fill in the form and our Delhi-based technical team will respond within 24 hours with a tailored proposal, pricing, and free consultation.
Whether you are setting up a new ETP/STP plant or upgrading an existing monitoring system, our experts will help you select the right BOD, COD, and pH Analyzer configuration for your industry and CPCB compliance requirements.
