APS12 High-Temperature Pure Water pH Electrode for Boiler Water and Power Plants
The ARTang APS12 is designed for online pH measurement in low-conductivity pure water and high-temperature water systems.
It features an HL low-resistance glass membrane and is optimized for stable response in clean low-conductivity water down to 1 μS/cm.
The electrode operates within a temperature range of 0–130°C and is available in multiple insertion lengths, temperature elements and connector options for flexible system integration.
- Measurement range: 0~14 pH
- Temperature range: 0~130°C
- Minimum medium conductivity: 1 μS/cm
- Operating pressure: 0~3 bar
- Maximum pressure limit: 6 bar
- Multiple temperature element and connector options
Product Description
The APS12 is designed for pH measurement in low-conductivity pure water systems such as boiler water, power plant water chemistry, hot demineralized water, and other high-temperature clean water processes where stable and accurate readings are required. It supports a minimum medium conductivity of 1 μS/cm.
It uses an HL low-resistance glass membrane, a multi-pore ceramic junction, and a double-junction reference system to ensure stable signal response. High-temperature-resistant materials and GFT polymer gel electrolyte support operation from 0–130°C, with PG13.5 mounting and configurable sensor options.
This electrode is suitable for power generation, industrial boiler systems, and OEM water analysis equipment requiring reliable pH monitoring in hot, low-ionic-strength environments.
It features a cylindrical, acid- and alkali-resistant glass membrane approximately 0.2~0.4 mm thick, providing a large sensing area and improved mechanical impact resistance compared with conventional spherical glass bulbs. The integrated Ag/AgCl/KCl reference system uses pressure-resistant GFT polymer gel electrolyte, while the double-junction design helps protect the reference system from process contamination and reduces the risk of reference poisoning in wastewater and chemically complex media.
With stable measurement performance, chemical and pressure resistance, and flexible installation dimensions, the APS11 is suitable for a wide range of industrial water treatment and process control applications.
Technical Specifications
|
Parameter |
Specification |
|---|---|
|
Product model |
APS12 |
|
Measurement range |
0~14 pH |
|
Temperature range |
0~130°C |
|
Operating pressure |
0~3 bar |
|
Maximum pressure limit |
6 bar; not specified as a continuous operating pressure |
|
Minimum medium conductivity |
1 μS/cm |
|
Factory slope |
>95% of theoretical Nernst slope |
|
Zero point |
pH 7.00 ±0.25 |
|
Process connection |
PG13.5 |
|
Protection rating |
IP68 for applicable correctly sealed configurations |
|
Insertion length |
120, 150, 225, 325 or 425 mm |
|
Temperature element |
NTC 10K, NTC 2.252K, NTC 22K, Pt100 or Pt1000 |
|
Electrical connector |
S8, S8M, S7, VP, K8S or K2 |
|
Cable length |
Customizable up to 60 m |
Key Features and Engineering Benefits
Minimum conductivity of 1 μS/cm
Supports pH measurement in pure water and other low-conductivity aqueous media.
HL low-resistance glass membrane
Reduces membrane impedance and provides a faster, more stable pH response.
High-temperature GFT polymer gel
Maintains stable reference performance under elevated process temperatures.
Operating temperature up to 130°C
Suitable for hot pure-water and boiler-water applications within the specified operating limits.
Multiple temperature element options
Compatible with different industrial pH transmitters and controllers for flexible integration.
Standard PG13.5 connection
Ensures easy installation in standard holders, flow cells, and analytical assemblies.
Multiple insertion lengths and connector types
Simplifies OEM integration and allows direct replacement of existing electrodes.
Typical Applications
Power Generation & Boiler Water Systems
- Boiler feedwater and condensate monitoring
- Steam-water cycle sampling points
- Water treatment and chemical dosing systems
High-Temperature Pure Water Systems
- Hot demineralized water lines
- Industrial pure-water circulation systems
- High-temperature utility water processes
OEM and Industrial Monitoring Systems
- Steam and water analysis systems (SWAS)
- Water quality monitoring panels
- OEM pH measurement skids
- Replacement of existing PG13.5 pH electrodes
Which ARTang pH Electrode Should You Select?
Choose the APS12 when the primary application requirement is low-conductivity pure water combined with elevated process temperature.
For other applications:
- For municipal water, wastewater and general industrial processes, consider the APS11 Industrial Glass pH Electrode.
- For fermentation, food and beverage processes involving repeated 121°C sterilization cycles, consider the APS15 High-Temperature pH Electrode.
- For plastic-body protection in wastewater and immersion applications, consider the APS21 Plastic-Body pH Electrode.
Contact ARTang with your process conditions if you are uncertain which electrode is suitable.
FAQ
Performance below 1 μS/cm is not covered by the published APS12 specification.
For 18.2 MΩ·cm ultrapure water or other applications below 1 μS/cm, contact ARTang for technical review before selection.
The specified temperature range extends to 130°C, but 130°C should be treated as the upper temperature limit rather than an unconditional continuous rating for every application.
Actual suitability depends on operating duration, pressure, process chemistry, temperature cycling, holder design, connector and cable configuration.
The normal specified operating pressure is 0–3 bar. The 6 bar value is the maximum pressure limit and should not be presented as the recommended continuous operating pressure.
Pressure capability must be reviewed together with process temperature and installation conditions.
Keep the glass membrane and ceramic junction hydrated using the recommended pH electrode storage solution.
Do not store the electrode dry or in deionized water. Dehydration can increase membrane resistance, slow response and shorten sensor service life.
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.
