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.
■ Sensor deterioration diagnostic during measurement *2
■ Optical DO sensor connectable (optional)
■ Sample adjustment function
■ 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.
■ Replaceable chip without the need for tools
■ Combination with new-type ultrasonic cleaner improves antifouling property (optional)
■ Flat sensor surface (prevents bubble and stain accumulation) *2
■ No measurement reagent necessary
Enables continuous cleaning without damaging sensor, and long term adhesion prevention of stain.
■ The ion sensor enables long term stable measurement
■ New ion chip internal solution enables stable measurement (Japan patent No. 5144829)
■ 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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