AION12 Digital Ion-Selective Sensor with Automatic pH Compensation
The AION12 Digital Ion-Selective Sensor combines target-ion, pH and temperature measurement in one compact sensor.
Available for NH₄⁺, NO₃⁻, K⁺, Cl⁻ and F⁻, with automatic pH compensation and Modbus RTU over RS485 communication.
Key Specifications
- Target ion + pH + temperature measurement
- Automatic pH compensation
- Five ion configurations available
- Response time: <30 s
- Pressure: ≤0.4 MPa
Product Description
AION12 is designed for online ion-monitoring points where sample pH should also be measured and used as part of the ion-measurement compensation process.
The sensor combines:
- one ion-selective measurement channel
- one pH measurement channel
- temperature measurement
- automatic pH compensation
- Modbus RTU communication
This gives the monitoring system target-ion concentration, pH and temperature information from one sensor assembly.
Available Measurement Configurations
|
Model |
Target Ion |
Measurement Range |
Slope Magnitude |
Sensing Membrane |
|---|---|---|---|---|
|
AION12-NH4 |
NH₄⁺ + pH + Temperature |
0.1–2000 mg/L |
57 ± 2 mV/pNH₄ |
PVC membrane |
|
AION12-NO3 |
NO₃⁻ + pH + Temperature |
0.5–2000 mg/L |
57 ± 2 mV/pNO₃ |
PVC membrane |
|
AION12-K |
K⁺ + pH + Temperature |
0.1–3000 mg/L |
57 ± 2 mV/pK |
PVC membrane |
|
AION12-Cl |
Cl⁻ + pH + Temperature |
2.5–20000 mg/L |
57 ± 2 mV/pCl |
Single-crystal membrane |
|
AION12-F |
F⁻ + pH + Temperature |
0.1–20 mg/L |
57 ± 2 mV/pF |
Single-crystal membrane |
Response Time
|
Target Ion |
Specified Test Condition |
|---|---|
|
NH₄⁺ |
<30 s in 180 mg/L NH₄⁺ solution |
|
NO₃⁻ |
<30 s in 62 mg/L NO₃⁻ solution |
|
K⁺ |
<30 s in 39 mg/L K⁺ solution |
|
Cl⁻ |
<30 s in 350 mg/L Cl⁻ solution |
|
F⁻ |
<30 s in 19 mg/L F⁻ solution |
Response time in actual process samples may vary according to concentration, temperature, flow, interfering ions and sensor condition.
Signal Stability
- ±0.3 mV over 30 minutes
- ±1 mV over 24 hours
Technical Specifications
|
Parameter |
Specification |
|---|---|
|
Model |
AION12 |
|
Sensor architecture |
Dual-channel |
|
Target-ion measurement |
One selected ion |
|
pH measurement |
Integrated |
|
Automatic pH compensation |
Yes |
|
Temperature measurement |
Integrated |
|
Supply voltage |
12–24 VDC |
|
Communication |
Modbus RTU over RS485 |
|
Diameter |
44 mm |
|
Overall length |
276 mm |
|
Main housing material |
POM |
|
Cable material |
PUR |
|
Protection rating |
IP68 / NEMA 6P |
|
Pressure |
≤0.4 MPa |
|
Maximum flow velocity |
≤2.5 m/s / 8.2 ft/s |
|
Measurement environment temperature |
0~45°C |
|
Storage temperature |
−15~65°C |
|
Calibration |
Single-point / two-point |
|
Standard cable length |
10 m |
Key Features and Engineering Benefits
Automatic pH Compensation
Ion, pH and Temperature in One Sensor
AION12 provides three measured parameters from one installation point:
- ion concentration
- pH
- temperature
This can reduce the number of separate probes required in a monitoring system.
Modbus RTU over RS485
Selectable Ammonium Units
AION12-NH4 supports:
- mg/L NH₄⁺
- mg/L NH₄-N
The reporting unit can be changed in the sensor settings.
IP68 / NEMA 6P
Communication and System Integration
AION12 communicates using Modbus RTU over RS485.
When to Select AION12
Choose AION12 when:
- one target ion needs continuous monitoring
- pH should be measured at the same point
- automatic pH compensation is required
- temperature measurement is required
- Modbus RTU integration is required
Choose AION11 when integrated pH and pH compensation are not required.
Choose AION13 when pH compensation and replaceable sensing elements are both required.
Typical Applications
AION12 can be considered for:
- municipal wastewater treatment
- industrial wastewater treatment
- drinking-water treatment processes
- nutrient monitoring
- environmental water monitoring
- aquaculture
- industrial process water
- OEM water-quality analyzers
- online monitoring systems
FAQ
Yes. The integrated pH measurement participates in the sensor’s automatic compensation algorithm.
Yes. AION12 integrates target-ion, pH and temperature measurement.
No. Each AION12 is configured for one selected target ion.
Yes. AION12-NH4 supports selectable mg/L NH₄⁺ and mg/L NH₄-N units.
Yes, provided the system supports Modbus RTU over RS485 and is configured according to the sensor communication documentation.
Get the Right AION12 Configuration
Not sure which ion-sensor configuration is right for your application? Tell us what you need to measure and your operating conditions. Our team will review the application and recommend the appropriate AION12 configuration.
For faster selection, please include:
- Target ion: NH₄⁺, NO₃⁻, K⁺, Cl⁻ or F⁻
- Expected concentration range
- Sample pH and temperature
- Process pressure and flow conditions
- Major chemicals or interfering ions, if known
- Installation method and required cable length
Factory Strength & Quality Assurance
ARTang supports industrial measurement projects with in-house production, strict calibration, certified quality control, and global exhibition experience.
Factory Production
In-house production and assembly for stable product quality and reliable delivery.
CNC Machining Equipment
Product Assembly
CNC Machining
Welding Process
warehouse
Technical Support Department
Certified Quality
Product certificates and quality control systems support reliable industrial measurement applications.
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Exhibition Experience
ARTang meets customers and distributors at industry exhibitions to better understand project needs and market requirements.
