Precision Sensors. Engineered in Germany.
Every Kuntze sensor is designed, manufactured, and quality-tested at our production facilities in Hartha, Germany — a state-of-the-art facility purpose-built for sensor manufacturing and continuously modernized since 2013. From raw materials to final calibration, each sensor passes through rigorous in-house quality control before it ever reaches your system.
This is what “Made in Germany” means at Kuntze: not just a label, but a commitment to engineering precision, material quality, and long-term reliability that has defined the company across three generations of family ownership.
Built Where It Matters
Kuntze Instruments was founded in 1945 and has been manufacturing water quality sensors ever since. Our headquarters remain in Meerbusch, Germany, near Düsseldorf — the birthplace of Kuntze engineering. In 2013, we established a dedicated sensor production facility in Hartha, Germany, purpose-built for the precision demands of electrochemical sensor manufacturing. That facility was massively expanded and modernized in 2018 to meet growing global demand without compromising the craftsmanship that defines our products.
Every sensor in the ZIRKON® ONE lineup is produced, calibrated, and tested at this facility before shipment. No outsourcing. No shortcuts. Every unit is traceable to the hands and processes that built it.
Founded in 1945
Three generations of family ownership and sensor engineering expertise.
Hartha, Germany
Dedicated sensor manufacturing facility, expanded and modernized in 2018.
100% In-House QA
Every sensor designed, produced, and tested at Kuntze facilities. No exceptions.
KUNTZE Digital Smart Sensors
The ZIRKON® ONE sensor lineup represents the next generation of Kuntze sensor technology — engineered specifically for the NEON® ONE platform. These aren’t passive measurement devices. They are intelligent data nodes that identify themselves, store their own calibration history, and communicate directly with the system for true plug-and-play operation.
What makes them smart
- Automatic sensor identification — each sensor is recognized and configured instantly by the NEON® ONE platform
- Onboard calibration memory — calibration data lives on the sensor itself, not just in the controller
- Hot-swappable design — pre-calibrated sensors can be swapped in seconds without system downtime
- Environmental exposure tracking — sensors log exposure to extreme conditions for diagnostics and longevity planning
- Universal NEON® ONE compatibility — seamlessly fits the modular platform architecture across all applications
Conventional sensors simply measure. KUNTZE Digital Smart Sensors manage themselves — reducing operational complexity, minimizing downtime, and delivering a new level of confidence in your water quality data.
The ZIRKON® ONE Sensor Lineup
Each sensor in the ZIRKON® ONE family is engineered for a specific measurement role — but all share the same intelligent architecture, snap-in connector, and NEON® ONE integration. Whether you need disinfection monitoring, pH control, ORP tracking, or flow measurement, there is a purpose-built ZIRKON® ONE sensor for your application.
ZIRKON® ONE DIS — Disinfection Sensor
Multi-parameter disinfection monitoring in a single, maintenance-free sensor.
- Measures free chlorine, activated bromine, chlorine dioxide, and ozone
- Compatible with ASR® automatic self-cleaning system
- No membranes or reagents required
- 8-pole Snap-In connector for fast, blind installation
- Smart onboard memory for calibration and diagnostic tracking
ZIRKON® ONE Biocides — Total Chlorine & Bromine Sensor
Reliable total chlorine and bromine monitoring for disinfection and industrial water systems.
- Measures total chlorine and bromine concentrations (0–20 ppm)
- Short start-up time — operational in under 15 minutes
- No membrane replacement required
- Integrated diagnostics and calibration memory
- Suitable for food & beverage, industrial water, and pool applications
ZIRKON® ONE pH Universal — pH Sensor
High-accuracy pH measurement engineered for broad compatibility across water applications.
- Universal application across disinfection, industrial, food & beverage, and pool systems
- Advanced Zirkon junction and AH-glass membrane for lasting accuracy
- Onboard memory stores calibration data and usage diagnostics
- Quick-connect, tool-free 8-pole Snap-In installation
- Designed for seamless NEON® ONE platform integration
ZIRKON® ONE ORP Universal — Redox Potential Sensor
Precise oxidation-reduction potential monitoring for water treatment and industrial applications.
- Measurement range: −1500 to +1500 mV
- Robust corrosion-resistant materials for demanding environments
- Integrated memory for calibration and sensor identification
- Low maintenance with long service life
- 8-pole Snap-In connector for fast installation
ZIRKON® ONE —Sulfite Measurement Sensor
Precision sulfite monitoring for industrial water and process control applications.
- High-precision measurement within ±1 ppm tolerance
- No membranes or reagent refills required
- Onboard chip stores calibration and diagnostic data
- Snap-in 8-pole connector for fast, reliable setup
- Compatible with ASR® automatic self-cleaning system
ZIRKON® ONE FT — Flow & Temperature Sensor
Reliable flow detection and temperature measurement to ensure optimal sensor performance.
- Designed for use with STABIFLOW® ONE flow cells
- Temperature measurement range: −5 to +70 °C
- Shatter-resistant PVC shaft with integrated reed switch
- Maintenance-free design with integrated diagnostics memory
- 8-pole Snap-In connector for one-hand installation
Shared Across the Entire Lineup
Every ZIRKON® ONE sensor — regardless of measurement parameter — is built on the same intelligent platform foundation:
8-pole Snap-In Connector
Fast, secure installation — even in blind or confined spaces.
Onboard Smart Memory
Calibration data and sensor ID stored on the sensor itself.
No Membranes or Reagents
Maintenance-free operation that reduces lifetime cost and upkeep.
NEON® ONE Platform Integration
Every sensor is purpose-built for the modular NEON® ONE architecture.
Hot-Swappable
Pre-calibrated replacement sensors can be swapped without system downtime.
Made in Germany
Designed, produced, and quality-tested at Kuntze facilities in Hartha, Germany.
Find the Right Sensor for Your Application
Not sure which sensor fits your process? Our team is ready to help you match the right ZIRKON® ONE sensor to your specific water treatment application, flow conditions, and monitoring requirements.
Browse individual product pages for full technical specifications and ordering information, or contact Kuntze USA to speak with an application specialist.
