AION13 Modular Multi-Ion Sensor with Replaceable Electrodes
The AION13 Modular Digital Ion-Selective Sensor supports up to two ion-selective sensing channels with integrated pH and temperature measurement.
Available sensing elements include NH₄⁺, NO₃⁻, K⁺, Cl⁻ and F⁻. Depending on the configuration, the second ion channel can be used for simultaneous dual-ion measurement or interference compensation.
Key Specifications
- Up to two ion-selective sensing channels
- Integrated pH and temperature measurement
- Automatic pH and ion compensation
- Replaceable sensing elements
- Dual-ion configurations available
- Modbus RTU over RS485
Product Description
The AION13 uses a modular multi-channel sensor architecture that combines ion-selective measurement, pH measurement and temperature measurement in one digital probe. The sensor can accommodate up to two ion-selective sensing elements.
Simultaneous Multi-Ion Measurement
Two target ions can be monitored from the same sensor assembly.
For example:
NH₄⁺ + NO₃⁻
This configuration provides simultaneous ammonium and nitrate monitoring from one multi-parameter probe.
Secondary-Ion Compensation
The second ion-selective channel can also measure an interfering ion and provide that information to the internal compensation algorithm.
Confirmed compensation configurations include:
NH₄⁺ + K⁺
Potassium measurement is used as an input to compensation of the ammonium measurement.
NO₃⁻ + Cl⁻
Chloride measurement is used as an input to compensation of the nitrate measurement.
In addition, the integrated pH measurement participates in the automatic compensation algorithm.
This combination of multi-ion sensing, interference compensation, pH compensation and replaceable electrodes is the main engineering difference between the AION13 and the more compact AION11 and AION12 platforms.
Multi-Ion Measurement and Compensation
Ion-selective electrodes respond primarily to their target ions, but measurement can also be influenced by other ions and changes in sample chemistry.
The AION13 addresses this by combining multiple sensing signals within one digital sensor platform.
NH₄⁺ + K⁺ Compensation
NO₃⁻ + Cl⁻ Compensation
NH₄⁺ + NO₃⁻ Simultaneous Measurement
Automatic pH Compensation
Available Ion-Selective Elements
|
Ion |
Measurement Range |
Slope Magnitude |
Sensing Membrane |
|---|---|---|---|
|
NH₄⁺ |
0.1–2000 mg/L |
57 ± 2 mV/pNH₄ |
PVC membrane |
|
NO₃⁻ |
0.5–2000 mg/L |
57 ± 2 mV/pNO₃ |
PVC membrane |
|
K⁺ + pH + Temperature |
0.1–3000 mg/L |
57 ± 2 mV/pK |
PVC membrane |
|
Cl⁻ |
2.5–20000 mg/L |
57 ± 2 mV/pCl |
Single-crystal membrane |
|
F⁻ + pH + Temperature |
0.1–20 mg/L |
57 ± 2 mV/pF |
Single-crystal membrane |
Ammonium Reporting Units
When an NH₄⁺ sensing element is installed, the ammonium result can be configured as:
- mg/L NH₄⁺
- mg/L NH₄-N
The unit can be selected through the sensor settings to match different reporting conventions.
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 |
Signal Stability
- ±0.3 mV over 30 minutes
- ±1 mV over 24 hours
Technical Specifications
|
Parameter |
Specification |
|---|---|
|
Model |
AION13 |
|
Sensor architecture |
Modular multi-channel sensor |
|
Ion-selective channels |
Up to 2 |
|
Available ion elements |
NH₄⁺, NO₃⁻, K⁺, Cl⁻, F⁻ |
|
Simultaneous dual-ion measurement |
Supported according to configuration |
|
Secondary-ion compensation |
Supported according to configuration |
|
pH measurement |
Integrated |
|
Automatic pH compensation |
Yes |
|
Temperature measurement |
Integrated |
|
Sensing-element design |
Replaceable |
|
Slope magnitude |
57 ± 2 mV/pIon |
|
Power supply |
12–24 VDC |
|
Communication |
Modbus RTU over RS485 |
|
Diameter |
62 mm |
|
Overall length |
350 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
Up to Two Ion-Selective Channels
Interference Compensation with a Second Ion Sensor
NH₄⁺ + K⁺：K⁺ compensation for NH₄⁺ measurement
NO₃⁻ + Cl⁻：Cl⁻ compensation for NO₃⁻ measurement
Simultaneous Dual-Ion Measurement
Automatic pH Compensation
Ion + Ion + pH + Temperature
Depending on the selected configuration, one AION13 can provide primary ion measurement, secondary ion measurement or compensation input, pH and temperature from the same monitoring point.
Replaceable Sensing Elements
When a sensing element requires replacement, the serviceable design allows the sensing section to be replaced without automatically replacing the entire probe assembly.
Modbus RTU over RS485
IP68 / NEMA 6P Protection
AION11 vs AION12 vs AION13
|
Feature |
AION11 |
AION12 |
AION13 |
|---|---|---|---|
|
Ion-selective channels |
1 |
1 |
Up to 2 |
|
Simultaneous dual-ion measurement |
No |
No |
Yes |
|
Secondary-ion compensation |
No |
No |
Yes |
|
Temperature measurement |
Yes |
Yes |
Yes |
|
Integrated pH |
No |
Yes |
Yes |
|
Automatic pH compensation |
No |
Yes |
Yes |
|
Modbus RTU over RS485 |
Yes |
Yes |
Yes |
|
Built-in reference design |
Yes |
— |
— |
|
Replaceable sensing elements |
No |
No |
Yes |
|
Diameter |
40 mm |
44 mm |
62 mm |
|
Length |
238 mm |
276 mm |
350 mm |
|
Main material |
PP |
POM |
POM |
|
Protection |
IP68 / NEMA 6P |
IP68 / NEMA 6P |
IP68 / NEMA 6P |
|
Product positioning |
Compact single-ion monitoring |
Single-ion monitoring with pH compensation |
Multi-ion measurement and compensation with replaceable sensors |
Typical Applications
AION13 can be considered for continuous multi-parameter ion monitoring in applications such as:
- municipal wastewater treatment
- industrial wastewater treatment
- nutrient monitoring
- environmental water monitoring
- aquaculture
- process-water systems
- industrial water-treatment systems
- OEM water-quality analyzers
- remote online monitoring stations
Different applications may require different ion combinations.
FAQ
Ion-selective measurements can be affected by other ions in the sample. The AION13 can directly measure a relevant interfering ion and use that information in its compensation algorithm.
Yes. pH measurement is integrated into the sensor.
Yes. The integrated pH measurement participates in the automatic compensation algorithm.
Yes. Temperature measurement is integrated into the sensor assembly.
Yes. AION13 uses a modular replaceable sensing-element design.
Yes. The ammonium measurement can be configured to display either mg/L NH₄⁺ or mg/L NH₄-N.
Configure the AION13 for Your Water Quality Application
The AION13 can be configured for single-ion measurement, simultaneous dual-ion measurement or measurement with a secondary ion compensation channel.
Tell us what you need to measure and the conditions of your sample. ARTang will review the ion combination, concentration range and potential interference conditions and recommend the appropriate sensing configuration.
For faster selection, please include:
- Primary ion to be measured
- Secondary ion or compensation parameter, if required
- Expected concentration ranges
- Expected pH and temperature range
- Major interfering ions or chemicals, if known
- Process pressure and flow conditions
- Installation method
Factory Strength & Quality Assurance
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