Water quality analyzers, flow meters and online monitoring systems
Senvolt Instruments measures what matters in sewage, effluent and process water: pH, DO, TDS, ORP and chlorine controllers, electromagnetic and ultrasonic flow meters, level transmitters, ozonators and CPCB-connected effluent monitoring.
- 4–20 mA + RS485 Modbus RTU on every controller
- DN10–DN2800 electromagnetic flow meters
- CPCB / SPCB online data connectivity
Product ranges
Nine ranges from our 2025 catalog, each with full specifications and model numbers.
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I
Water Quality Controllers & Analyzers
Online pH, ORP, DO, conductivity/TDS and residual chlorine controllers with 4–20 mA, RS485 Modbus and relay alarms.
10 products
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II
Electromagnetic Flow Meters
DN10 to DN2800 magnetic flow meters for STP, ETP, slurry, milk and sanitary process lines.
3 products
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III
Turbine Flow Meters
Stainless steel liquid and gas turbine flow meters, 4 mm to 200 mm, flanged or threaded.
2 products
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IV
Ultrasonic Flow Meters
Transit-time ultrasonic flow meters for pipes from 25 mm to 6000 mm – clamp-on, insertion or inline.
1 product
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V
Level Transmitters
Ultrasonic, 80 GHz radar and hydrostatic submersible level transmitters for tanks, sumps and wells.
3 products
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VI
Ozonators
Industrial ozone generators from 10 to 400 g/h for water treatment and air disinfection.
2 products
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VII
Online Monitoring Systems
CPCB/SPCB-connectable continuous monitoring analyzers for ETP and STP – COD, BOD, TSS, pH, TDS, DO and more.
1 product
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VIII
Digital Water Quality Sensors
RS485 digital sensors for COD/BOD, TSS, pH, EC/TDS, DO, oil in water and 10+ other parameters.
8 products
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Pressure TransmittersIX Pressure Transmitters Vacuum pressure transmitters for MBR suction lines and general-purpose pressure transmitters. 2 products
Online effluent monitoring that reports to CPCB and SPCB
A factory-built analyzer cabinet with digital RS485 sensors for COD, BOD, TOC, TSS, pH, TDS and DO. Its on-board 4G gateway sends data to the Pollution Control Board servers and the Senvolt cloud dashboard at the same time, with no PC on site.
- COD
- BOD
- TOC
- TSS
- pH
- TDS
- DO
- Ammonium
- Turbidity
- Nitrates
- Nitrites
- Chlorine
- ORP
- Ozone
Where our instruments work
Commercial STPs
Apartments, hotels, hospitals and IT parks. Flow, DO-based aeration control, chlorine and outlet monitoring.
Industrial ETPs
pH and ORP dosing control, PTFE-lined flow meters for corrosive effluent, and CPCB online monitoring.
Pharma water
Resistivity up to 18.25 MΩ·cm for purified water, sanitary flow meters and ozone sanitisation.
Dairy and beverage
Hygienic magnetic flow meters for milk and juice that withstand CIP/SIP cleaning.
Built for the plant floor
Talks to your PLC
Controllers give 4–20 mA and RS485 Modbus RTU together, with three relays to run dosing pumps and blowers directly.
Matched to the medium
Rubber, PTFE, FEP or PU linings and 316L, Hastelloy, titanium, tantalum or platinum electrodes, chosen for what is in your pipe.
Sealed for wet areas
IP65 controllers, IP67 ultrasonic and IP68 radar and submersible level transmitters for sumps, pits and outdoor tanks.
Tell us what you need to measure
Share the parameter, medium, pipe size and the output your PLC or monitoring system expects. We will reply with the right model and a quotation.