Field-installation Type Ammonia Nitrogen Meter(Four-Wire Transmission)
HC-200NH is an ammonia nitrogen(NH4-N) meter using ion electrode method which is designed for aeration control in wastewater treatment.
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â– Sensor deterioration diagnostic during measurement *2
â– Optical DO sensor connectable (optional)
â– Sample adjustment function
â– Automatic potassium ion concentration compensation
Deterioration diagnostic function during continuous measurement. This function reduces the risk of sudden loss of measurement and provides more reliable measurement.
â– Replaceable chip without the need for tools
â– Combination with new-type ultrasonic cleaner improves antifouling property (optional)
â– Flat sensor surface (prevents bubble and stain accumulation) *2
â– No measurement reagent necessary
Enables continuous cleaning without damaging sensor, and long term adhesion prevention of stain.
â– The ion sensor enables long term stable measurement
â– New ion chip internal solution enables stable measurement (Japan patent No. 5144829)
â– New structure of reference chip achieves stability measurement *1
Data from joint research with Bureau of Sewerage Tokyo Metropolitan Government
Evaluation Term: 6 months, Application: Aeration tank in Tokyo, Optional: Ultrasonic cleaner
Maintenance: Once a month (Wash sensor with water and sample adjustment),
Result: Stable measurement for 6 months without sensor replacement
*1: patent applied
*2: patent applied with Bureau of Sewerage Tokyo Metropolitan Government.
Model | HC-200NH |
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Combination sensor unit model | AM-2000 |
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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 |
Combination sensor unit model | DO-2000 |
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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 |
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. |
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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 |
Sensor unit model | AM-2000 |
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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) |
Sensor unit model | DO-2000 |
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Measurement sample temperature | 0~50°C |
Measurement depth | 10m |
Wetted material | SUS316, NBR, PVC |
Weight | Approx. 3.0kg (including 10m cable) |
*Sensor7691 and 7692 : Store in low temperature (1~30℃)
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