PH water quality sensor DISE-900

nitrate leveltemperatureammonia

Product Overview
Ion selection sensors can achieve flexible selection of one or two ionic select electrodes, while default, the pH and temperature electrodes are default, and 4 parameters can be monitored simultaneously. The optional parameters of the ion selective electrode include: ammonium ion (NH4+), nitrate ion (NO3-), potassium ion (K+), chloride ion (CL-), fluorine ion (F-). Different parameter combination can also realize the effect of mutual compensation, making the measurement data more accurate. This product is widely used in surface water, groundwater, industrial process and sewage treatment of ammonia nitrogen, nitrate plasma online monitoring.

Introduction
It is a flexible multi-parameter sensor that supports selection of 1 or 2 ion-selective electrodes (ISEs), paired with standard pH and temperature electrodes for simultaneous monitoring of up to 4 parameters. Optional ISE parameters include Ammonia Nitrogen (NH₄⁺), Nitrate (NO₃⁻-N), Potassium (K⁺), Chloride (Cl⁻), and Fluoride (F⁻). Different parameter combinations enable mutual compensation, ensuring higher measurement accuracy.

Key Features

• Flexible ISE configuration: Select 1 or 2 from 5 optional ions (NH₄⁺, NO₃⁻-N, K⁺, Cl⁻, F⁻) to meet diverse customer needs.
• Digital sensor design with strong anti-interference capability and long transmission distance.
• Standard digital signal output: Enables integration and networking with other devices without an additional transmitter.
• On-site easy installation with plug-and-play functionality.
• Built-in protection: Power polarity reversal protection; RS485 A/B terminal power connection protection.
• Equipped with time display, data storage, and historical data review functions; optional wireless data transmission module.

Applications

• Ideal for monitoring ammonia nitrogen and other ions in sewage treatment plants (nitrification processes, aeration tanks), industrial processes, and river water.

Specifications
Specifications
Details
Measurement Range
ammonia nitrogen (NH4N): 0.1~3000 mg/L
nitrate nitrogen (NO3N): 0.5~3000 mg/L
potassium ion (K+): 0.5~5000 mg/L
chloride ion (CL-): 3~3500 mg/L
fluorine ion (F-): 0.5~10000 mg/L
Temperature: 0-40℃
pH: 5-10
Resolution
Ion parameters: 0.01 mg/L
Temperature: 0.1℃
pH: 0.01
Measurement Accuracy
NH4N: ±5 % of the measured value or ± 0.2 mg/L, max. criterion.
Ion parameters: ±10% of the measured value or ±0.2 mg/L, max. criterion.
Temperature: ±0.5℃
pH: ±0.1 pH
Repeatability
±5% or 0.2mg/L, max. criterion.
Power Supply
9-36VDC
Communication Protocol
MODBUS RS485
Storage Temperature
0 to 50℃ (not freeze)
Operating Temperature
0 to 40℃ (not freeze)
Weight
<1KG
Level of Protection
IP68/NEMA6P
Cable Length
Standard: 10 m, the maximum can be extended 100m

Technical Characteristics / Specifications

• Model: DISE-900
• Measurement Range: NH4N: 0.1~3000 mg/L; NO3N: 0.5~3000 mg/L; K+: 0.5~5000 mg/L; Cl-: 3~3500 mg/L; F-: 0.5~10000 mg/L
• Temperature Range: 0-40℃
• pH Range: 5-10
• Resolution: Ion parameters 0.01 mg/L; Temperature 0.1℃; pH 0.01
• Accuracy: NH4N ±5% or ±0.2 mg/L; Ion parameters ±10% or ±0.2 mg/L; Temperature ±0.5℃; pH ±0.1
• Repeatability: ±5% or 0.2mg/L
• Power Supply: 9-36VDC
• Communication: MODBUS RS485
• Storage Temp: 0-50℃ (not freeze)
• Operating Temp: 0-40℃ (not freeze)
• Weight: <1KG
• Protection: IP68/NEMA6P
• Cable: Standard 10m, max 100m