Model No.:
LW107D-NHN(RS485)Use:
Measure NHN of waterPower Supply:
Battery or External DCLoRaWAN Mode:
OTAA Class A/CCertificates:
CE,ROHS,FCC,ISO and 11 patents certificationsCustomized Support:
OEM, ODMWarranty:
1 YearNH3 Water Quality Sensor RS485 Auto Temperature Compensation
The ZW‑NHN‑PRA integrated online ammonia nitrogen sensor is designed for reliable and high‑performance water quality monitoring. Built with a sophisticated PVC membrane‑based ammonium ion‑selective electrode, it provides precise detection of ammonium ion concentration in water. Equipped with automatic temperature compensation, the sensor delivers consistently fast, straightforward, accurate and economical testing results for various water applications.
This sensor adopts RS‑485 bus communication and Modbus/RTU protocol, allowing seamless connection to PLC, DCS, industrial computers, general controllers, paperless recorders, touch screens and other mainstream third‑party equipment.
It adopts a patented ammonium ion probe design, in which the internal reference solution permeates slowly through the microporous salt bridge under stable pressure above 100 KPa (1 Bar). This unique reference structure greatly improves measurement stability and provides a significantly longer service life compared with conventional industrial electrodes.
Water Quality NHN Sensor Specification:
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Model |
ZW-NHN-PR |
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Case Material |
ABS、PVC、POM |
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Measurement Principle |
Ion Selective Electrode Method |
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Range and resolution |
0～10.00 mg/L |
0.01 mg/L,0.1℃ |
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0～100.00 mg/L |
0.01 mg/L,0.1℃ |
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0～1000.0 mg/L |
0.1 mg/L,0.1℃ |
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Accuracy |
0～10.00 mg/L |
±10% of reading or ±1 mg/L, whichever is greater, ±0.5℃ |
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0～100.00 mg/L |
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0～1000.0 mg/L |
±10% of reading ±0.5℃ |
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Response time (T90) |
＜60s |
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Minimum detection limit |
0.09(0-10mg/L and 0-100mg/L) |
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0.9（0-1000mg/L） |
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Calibration method |
Two-point calibration |
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Cleaning method |
/ |
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Temperature compensation |
Automatic temperature compensation (Pt1000) |
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Output method |
RS-485 (Modbus RTU) |
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Storage temperature |
-5～65℃ |
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Working conditions |
0～40℃, <0.1 MPa, 4～10 pH |
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Installation method |
Submersible installation, 3/4 NPT |
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Power consumption |
0.2W@12V |
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Power supply |
12～24V DC |
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Protection level |
IP68 |
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Cable length |
5 meters, other lengths can be customized |
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Packaging:
Single gross weight: 0.800 KG
Single package size: 32x14x9 cm
Product Description:
Application:
Ammonia nitrogen sensors are widely used in the fields of sewage treatment, aquaculture, and environmental monitoring to detect real-time ammonia nitrogen content in water bodies, providing key data support for water quality management and pollution control.
Certifications：
We are a leading manufacturer and exporter of ammonia nitrogen (NHN) sensors in China with over 10 years of industry experience. All our NHN sensor products are CE and RoHS certified.
Production Process:
Why choose us:
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Tel : +86 18146178586
Whatsapp : +86 18146178586
Email : qui@zonewu.com
Add : 1501-3, Building F03, Phase III, Software Park, Jimei District, Xiamen City, Fujian Province, China
