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PT-DN85 Online Ammonia Nitrogen Sensor – Real-Time NH4-N Monitoring, Reagent-Free, Self-Cleaning, MODBUS/RS485, IP68
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PT-DN85 Online Ammonia Nitrogen Sensor – Real-Time NH4-N Monitoring, Reagent-Free, Self-Cleaning, MODBUS/RS485, IP68

Measurement Range: 0–100 mg/L NH4-N, Accuracy: ±10% or ±0.5 mg/L, Resolution: 0.01 mg/L
pH Range: 0–10, Accuracy: ±0.1 pH, Resolution: 0.01
Automatic compensation: pH, temperature, optional potassium ion
Housing Material: POM, compact, corrosion-resistant; Protection Class: IP68, Maximum depth: 10 m
Self-cleaning brush for low maintenance and long-term reliability
Digital Output: RS-485, MODBUS protocol, strong anti-interference signal
Power Supply: 12VDC±20%, Current <100 mA (<200 mA during cleaning), Cable Length: 10 m (customizable)
 
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  • PT-DN85

  • TOP

Ammonia nitrogen sensor, no reagents, green and non-polluting, can be online real-time monitoring. Ammonium ion, pH and reference electrode, pH and temperature can be compensated (optional addition: potassium ion, automatically on the potassium ion in the water body). Can be installed directly into the type, compared with the traditional ammonia nitrogen analyser is more economical and environmentally friendly, convenient and quick. The sensor has a self-cleaning brush, which can prevent foreign matter from adhering, making the maintenance cycle longer, with excellent reliability. RS485 output, support Modbus, easy to integrate.


Product Features


- POM housing

The overall housing is made of POM, which is compact, lightweight, strong and corrosion-resistant.

- Economic and environmental protection

No reagents, no pollution, economic and environmental protection.

- Automatic cleaning

With self-cleaning brush to prevent microorganisms from attaching, low maintenance.

- Automatic compensation

Automatically compensates for potassium ion (optional), pH and temperature of the water body.

- Strong anti-interference ability

MODBUS-RTU communication, the signal is strong anti-interference ability, transmission distance is farther.

- Watchdog function

Watchdog function ensures that the instrument will not crash during use.


Item

Detailed parameters

Measuring range

0-100mg/L NH4-N

Measurement accuracy

±10% of measured value or ±0.5mg/L, whichever is greater

Resolution

0.01mg/L

pH range

0-10

pH Accuracy

±0.1pH

pH resolution

0.01

Protection class

IP68

Maximum depth

Underwater 10m

Temperature range

0~50°C

Sensor Interface

Support RS-485, MODBUS protocol

Assembly

Input

Power supply

12VDC±20%,1A

Rated Power

DC 9~24V, current<100mA (<200mA when turning brush)

Probe Cable Length

10m (default), customisable

Calibration Method

One-point or two-point calibration

Enclosure Material

POM



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