S423 C OPT Optical DO Sensor
Optical luminescence dissolved oxygen sensor
- Optical luminescence
- No membrane, no moving parts
- AISI 316 or PVC body
- Interchangeable sensor cap
Aeration control
Optical Dissolved Oxygen Analyzers for ETP & STP
Chemitec optical DO sensors & transmitters — supplied across India by Parshvi Technology
Run aeration blowers only as hard as the biology needs — membrane-free optical DO measurement for effluent and sewage treatment.
- Optical — no membrane or electrolyte to replace
- Stable readings, far less calibration
- Analogue output trims blower speed
- Stainless steel or PVC sensor body
Products
Chemitec DO range
Pick a model to get its price and datasheet — or tell us your plant and we'll recommend a setup.
Series 30 DO Transmitter
Single-parameter controller with display and alarms
- Graphic display & alarms
- Analogue output for blower control
- Panel or IP65 wall mount
Brands we represent
Our Brands & Partners
Genuine products from 17 global manufacturers, supported in India by Parshvi Technology.
Auburn
Beck
Calex
Chemitec
Econox
Exner
Filsa
HAUBER-Elektronik
Halstrup-Walcher
Höntzsch
KxS
Kuntze
Pixsys
Produal
Seli
Shinko
Trumen
Selection guide
How to choose
Sensing principle
→ Optical (S423 C OPT)
No membrane replacement or calibration drift in biological tanks
Body material
→ AISI 316 or PVC
Stainless for abrasive mixed liquor, PVC for standard basins
Blower control
→ Series 30 transmitter
Display, alarms and analogue output to hold the DO set point
Beyond ETP
→ Same sensor
Fish farming, aquaculture and surface-water monitoring
Why Parshvi
Process Measurement & Automation Since 2011
2011
Since 2011
17
Global brands
India & Asia
Serving India & Asia
Fast
Quote turnaround
Expert
Application engineering
Full
Warranty & official documentation support
Explore more
Other products we supply
Vibration Sensors
HAUBER-Elektronik
View products →
pH & ORP Electrodes
Kuntze · Chemitec
View products →
IR Temperature Sensors & Pyrometers
Calex
View products →
Chlorine Analyzers
Chemitec
View products →
Turbidity Sensors
Chemitec · Exner
View products →
Air Differential Pressure
Produal · Beck · Halstrup-Walcher
View products →
Air Velocity & Flow
Produal
View products →
Process Refractometers
KxS
View products →
Black Liquor Concentration Meter
KxS
View products →
Head-Mount Temperature Transmitter
Pixsys
View products →
Cell Growth & Biomass Sensors
Exner
View products →
HMI & PLC
Pixsys
View products →View all products
Need something else? We supply 17 global brands — ask our engineer.
FAQ
Dissolved oxygen FAQs
Not sure which model fits?
Tell us about your plant and tanks — we'll recommend the right DO setup.