Home Smart Industrial Ammonium Nitrogen Sensor NH4485
Ammonium Nitrogen Sensor
NH4485
Ammonium Nitrogen Sensor NH4485

Smart IoT Monitoring
RS-485 & Wi-Fi interfaces. No app or meter required. QR Code access and OTA updates.

Accurate Ammonia Measurement
Temperature and K⁺ interference compensation, with NH3 calculation based on NH4-N, temperature, and pH.

All-in-One IP68 Design
Built-in IoT and sensor, corrosion-resistant and fully submersible.

Smart Calibration
Web-based three-point calibration with stored settings and the latest three calibration records.

AI Smart Maintenance
Smart electrode diagnostics, optional auto-cleaning, status alerts, and last-reading hold.

–Application areas– Aquaculture, Seawater, Wastewater, Groundwater, Rivers, Plant Nutrient Solutions.
Feature of Product
Network Interface RS-485 and Wi-Fi web dual interface, no need to install extra apps, supports monitoring and operation via phone or computer Smart Calibration Supports on-site and remote calibration, simplifying operation Waterproof Design IP68 waterproof rating, can be directly submerged in rivers, wastewater, or seawater for measurement Automatic Cleaning Optional auto-cleaning function extends maintenance intervals
Optional Code & Specifications
NH4485 Code 1 Code 2 Code 3
Code 1 Function Code 2 Connector Code 3 Cable / Hose Length
N No Auto-Cleaning C Quick plug 3N 3 m + bare wire
3C 3m + quick plug
10N 10 m + bare wire
10C 10 m + quick plug
A24 Auto-Cleaning
(Including
DC24V air pump, nozzle)
F Cable Head 20N 20 m + bare wire
20C 20 m + quick plug
x N x m + bare wire
x C x m + quick plug
Code 1 Function
N No Auto-Cleaning
A24 Auto-Cleaning
(Including DC24V air pump, nozzle)
Code 2 Sensing End Connector Code 3 Line/Air Duct Length
C Quick plug 3N 3 m + bare wire
3C 3m + quick plug
10N 10 m + bare wire
10C 10 m + quick plug
F Cable Head 20N 20 m + bare wire
20C 20 m + quick plug
x N x m + bare wire
x C x m + quick plug
NH4 Specification Temperature Specification
Measuring
Range

0~10000 mg/L (custom)

Slope 70~130%
Temperature
Principle
NTC30K
Measuring
Rang
-10~120°C (ATC)
Accuracy ±5% reading ±0.5mg/L Accuracy ±0.2°C
Resolution 0.01mg/L Resolution 0.1°C
Reproducibility ±3% reading ±0.5 mg/L Reproducibility 0.1°C
Operating
Temperature
5~50°C Other Specification
Response Time T90 ≤120 S Link above 3/4" NPT
Link below M42
Communication

RS-485 Modbus RTU

Wi-Fi web page, no app needed

QR code opens the web page

(192.168.1.80)
Housing
Material
PP,acid and alkali resistance/ food grade/zero dissolution
Electrode
Material
PVC
Dimension Ø50 x L213.9mm
Weight ≤340g
Certificate

CE (EU)

FCC (US)
Power Auto-Cleaning : 24VDC (Optional) 
No Auto-Cleaning : DC9~36V
Power
Consumption
Auto-Cleaning : 6.8W
No Auto-Cleaning : 0.8W
International
Protection
Marking
IP68
Technical
Principle

Complies with Taiwan EPA NIEA W447.20C; graphite electrodes measure impedance to calculate salinity.

Data Res.

16-bit (0.001% F.S)

Surge Prot. 8000VDC
Protection

Polarity, overload, shorts

Installation Submersion, tee or insertion
NH4 Specification
Measuring Range 0~1000mg/L
(or customize higher concentration)
Slope reading : 70~130%
Accuracy ±5% reading ±0.5mg/L
Resolution 0.01mg/L
Reproducibility ±3% reading ±0.5 mg/L
Operating Temperature 5~50°C
Reproducibility T90 ≤120 S
Communication

RS-485 Modbus RTU

Wi-Fi web page, no app needed

QR code opens the web page

(192.168.1.80)
Certificate

CE (EU)

FCC (US)
Temperature Specification
Temperature Principle NTC30K
Measuring Rang -10~120°C (ATC)
Accuracy ±0.2°C
Resolution 0.1°C
Reproducibility 0.1°C
Other Specification
Link above 3/4" NPT
Link below M42
Housing Material PP,acid and alkali resistance/ food grade/zero dissolution
Electrode Material PVC
Dimension Ø50 x L213.9mm
Weight ≤340g
Power Auto-Cleaning : DC12or24V (Optional)
No Auto-Cleaning : DC9~36V
Power Consumption Auto-Cleaning : 6.8W
No Auto-Cleaning : 0.8W
International Protection Marking IP68
Technical
Principle Complies with Taiwan EPA NIEA W447.20C; graphite electrodes measure impedance to calculate salinity.
Data Res.

16-bit (0.001% F.S)

Protection

Polarity, overload, shorts

Surge Prot. 8000VDC
Installation Submersion, tee or insertion
PRODUCT VIDEO
PATENT / CERTIFICATION / AWARD
pH485-CE
pH485-FCC
R.O.C Patent No.M618722
China Patent No.15550036
IAIA國際創新 發明聯盟總會-金牌
MTE發明獎-金牌
ACHIEVEMENT
煒*環科-迪化汙水處理廠 煒*環科-迪化汙水處理廠 神*科技-龜山/石門水資源回收中心 神*科技-龜山/石門水資源回收中心 四*農業高科技股份有限公司 四*農業高科技股份有限公司 工*院-朴子汙水廠 工*院-朴子汙水廠
Tainan Headquarters/Factory No.33, Ln. 428, Sec. 3, Wenhua Rd., Rende Dist., Tainan City 717, Taiwan (R.O.C.)
+886-6-311-0008 +886-6-311-0522
[email protected]
Taichung Branch No. 1, Ln. 169, Sec. 3, Hanxi W. Rd., Beitun Dist., Taichung City 406, Taiwan (R.O.C.)
+886-4-243-75189
[email protected]
Taipei Branch 8F., No.122, Sec. 1, Sanmin Rd., Banqiao Dist., New Taipei City 220, Taiwan (R.O.C.)
+886-2-2737-2518 +886-2-2737-2628
[email protected]