Online Ammonia Nitrogen Monitoring System

Monitoring Ammonia in aeration tanks helps improve wastewater treatment processes while saving energy.

Introducing the HORIBA Ammonia nitrogen meter HC-200NH that has been designed for robust, reliable, and high-accuracy performance, for continuous measurement of ammonia nitrogen in water treatment facilities

By developing a special sensor internal structure, HORIBA has achieved a prolonged sensor life. In addition, the frequency of regular sensor cleaning can be greatly reduced by using burst-type ultrasonic cleaners.

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Industry Challenge	HORIBA Solution
Accuracy at Low Concentrations Monitoring ammonia levels around 1 ppm has historically been difficult for ISE sensors, forcing many facilities to rely on expensive, high-maintenance wet-chemistry analyzers.	Analyzer-Level Precision HORIBA’s proprietary internal solution allows the HC-200NH to achieve 1 ppm accuracy comparable to analyzer-type systems—ideal for ABAC applications & optimized blower efficiency.
Sensor Chip Lifespan Standard ISE sensor chips often require replacement every 2–3 months, increasing costs & maintenance frequency.	Extended Sensor Longevity HORIBA sensor chips offer a standard 6-month lifespan, with some field applications exceeding 8 months depending on sample conditions.
Maintenance Reduction Biofouling & scale buildup typically require frequent manual cleaning, leading to increased labor & downtime.	Intelligent Self-Cleaning HORIBA’s proprietary Burst-Oscillation Ultrasonic Cleaning technology prevents fouling & scale buildup—significantly extending intervals between manual maintenance.

Discover the HC-200NH Key Features

Continuous trending measurement available
Patented ion chip internal solution enables stable and prolonged measurement
Measurement range 0–1000 ppm (N-NH4), repeatability ±3%
Require minimum user input for maintenance
Easy sensor tip replacement on the field without specific tools
Precise measurement method, Ion-Selective Electrode (ISE)
The sample adjustment function reduces the need for calibrations.
Optional Dissolved Oxygen (DO) Channel
Auto diagnostic function and preventive maintenance alarm

Ammonia Nitrogen Sensor AM-2000

Watch HC-200NH Calibration Demo ▶ Watch HC-200NH Sensor Assembly Demo ▶

Demo Result with Sewerage Tokyo Metropolitan Gov. :

Explore the benefits of the Ammonia Monitoring Solution in Wastewater Facilities through the following case studies:

Chlorine Usage before Microfiltration ↗ Trend Values in SBR Process ↗

High-Efficiency Aeration in Bio Water ↗ NH₃-N Sensor: Aqua Nereda Application ↗

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HORIBA Process & Environmental

For over 75 years, HORIBA has been providing a wide range of Gas, Air, and Water Analysis Technologies to meet Environmental Regulations around the world