HC-200NH

Field-Installation Ammonia Nitrogen Analyzer

The HC-200NH continuously measures ammonia nitrogen (NH₄-N) in real time using an ion electrode method—ideal for optimizing aeration control in biological reaction tanks. It includes self-diagnostic functions, high durability, and optional integration with a dissolved oxygen (DO) sensor for enhanced monitoring capabilities.

HC-200NH

Field-Installation Ammonia Nitrogen Analyzer

Why Choose HC-200NH

Self-Diagnostic Sensor Monitoring – Tracks electrode degradation for reliable continuous measurement.
Difficult-Condition Durability – Replaceable chip design, ultrasonic anti-fouling options, and a flat sensor surface for minimal fouling.
Integrated Potassium Compensation – Automatically corrects interference from potassium ions to maintain ammonia accuracy.
Optional Dual-Parameter Monitoring – Supports simultaneous measurement of dissolved oxygen for comprehensive water treatment insights.

Key Advantages of HC-200NH

Continuous Reliability

Sensor Deterioration Alerts

Avoids sudden measurement failure through ongoing health diagnostics of the electrode.

Maintenance Made Easy

Tool-Free Chip Replacement

Enables rapid serviceability with optional ultrasonic cleaning to reduce fouling.

Accurate Ammonia Reading

Potassium Ion Compensation

Automatically adjusts for potassium interference to ensure true NH₄-N values.

Flexibility with DO Option

Dual Parameter Mode

Adds dissolved oxygen measurement capacity via plug-and-play sensor integration.

Technical Specifications of HC-200NH

Ammonia nitrogen meter specifications

Combination sensor unit model	AM-2000
Sensor model	7691: Ammonium ion chip, 7692: Potassium ion chip for compensation, 7211: Reference chip
Measurement range	NH₄-N: 0~1000mg/L (display range: 0~2000mg/L) Temperature: 0~40°C (display range: -10~110°C)
Display resolution	NH₄-N: 0.01mg/L: 0.00~10.00mg/L　0.1mg/L: 0.0~100.0mg/L 1mg/L: 0~1000mg/L Temperature: 0.1°C
Repeatability	NH₄-N: Larger value between 3%±1 digit of measured value or 0.2mg/L±1 digit (with standard solution) Temperature: ±0.3°C
Potassium ion compensation	Compensation range: Potassium ion concentration is not more than 10 times the ammonium ion concentration and under 1000mg/L Compensation error: ±20% (measured value)
Additional function	Adjustment with manual analysis (1 point), calibration curve input function (primary expression)
Self-diagnostic function	Correction error, sensor diagnostic error, transmitter malfunction

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Optical dissolved oxygen meter (optional)

Combination sensor unit model	DO-2000
Sensor model	5700A: Sensor cap
Measurement range	Dissolved oxygen concentration: 0~20mg/L Display resolution 0.01mg/L Saturation degree: 0~200% Display resolution 0.1% Temperature: 0~50°C Display resolution 0.1°C
Self-diagnostic	Correction error, sensor diagnostic error, transmitter malfunction

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Transmitter common specifications

Transmission output	3 points DC4~20mA input-output insulation type Maximum load resistance 900Ω Select 3 items from below Output range 1: Ammonia nitrogen concentration: Configurable within measurement range. Output range 2: Dissolved oxygen concentration: Configurable within measurement range. Output range 3: Temperature reading of the ammonia nitrogen meter: Configurable within measurement range of -10~110°C. Output range 4: Temperature reading of the dissolved oxygen meter: Configurable within measurement range of -10〜110°C.
Operation temperature range	-20~55°C (Do not freeze)
Power	AC100~240V 50/60Hz Consumption power 28VA (max)
Structure	Outdoor installation type: Protection level IP65 Installation method: 50A pole or attached to wall Case: aluminum alloy Attachment bracket: Hood: SUS304
Weight	Unit: Approx. 3.5kg Hood, attachment bracket: Approx. 1kg
Compliance standard	CE Marking, FCC Rules

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Detector specifications (Ammonia nitrogen meter)

Sensor unit model	AM-2000
Sample condition	0~40°C, pH4.0~8.5 [Na⁺]: 0~1000 times of [NH₄-N]
Measurement depth	10m
Wetted material	SUS316, FKM, PVC
Weight	Approx. 2.7kg (including 10m cable)

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Detector specifications (Optical dissolved oxygen meter)

Sensor unit model	DO-2000
Measurement sample temperature	0~50°C
Measurement depth	10m
Wetted material	SUS316, NBR, PVC
Weight	Approx. 3.0kg (including 10m cable)

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*Sensor7691 and 7692 : Store in low temperature (1～30℃)