APT11 Panel-Mount pH Transmitter and Controller with 4–20 mA Output
The ARTang APT11 is a compact panel-mount pH transmitter and controller designed for continuous pH monitoring in water treatment, wastewater treatment, neutralization processes, chemical dosing and general industrial liquid-analysis systems.
The APT11 provides a 4–20 mA analog output for remote signal transmission. High- and low-limit relay outputs can be used for alarms, interlocks or basic on/off control. It supports manual temperature compensation and can be paired with pH electrodes without an integrated temperature element.
- pH measurement range: 0–14 pH
- Specified controller accuracy: ±0.1 pH
- Manual pH temperature compensation
- 4–20 mA analog output
- High- and low-limit relay outputs
- Housing dimensions: 48 × 96 × 100 mm (H × W × D)
- Required panel cutout: 45 × 92 mm (H × W)
Product Description
The APT11 is intended for applications that require a local pH display, a standard analog measurement signal and two limit-based control functions. It can be installed in compact control panels, water-treatment skids, dosing systems and OEM equipment where panel space is limited.
The APT11 uses manual rather than automatic temperature compensation. This simplifies the electrode arrangement when the process temperature is stable or when the actual temperature can be entered during operation, but it is less suitable for rapidly changing temperature conditions.
Technical Specifications
|
Parameter |
Specification |
|---|---|
|
Product model |
APT11 |
|
Product type |
Panel-mount pH transmitter and controller |
|
pH measurement range |
0–14 pH |
|
Controller accuracy |
±0.1 pH |
|
Temperature compensation |
Manual |
|
Measured-medium temperature |
0–100°C, subject to electrode and process compatibility |
|
Compatible electrode |
pH electrode without an integrated temperature-compensation element |
|
Calibration |
Three-point calibration: pH 4.00, 6.86 and 9.18 |
|
Analog output |
4–20 mA |
|
Control outputs |
High-limit and low-limit relay outputs |
|
Power supply |
110 VAC ±10% or 220 VAC ±10%, 50/60 Hz; confirm ordered version |
|
Housing dimensions |
48 × 96 × 100 mm (H × W × D) |
|
Required panel cutout |
45 × 92 mm (H × W) |
|
Mounting method |
Panel mount / recessed installation |
Key Features
0–14 pH Measurement Range
±0.1 pH Controller Accuracy
Manual Temperature Compensation
4–20 mA Analog Output
High- and Low-Limit Relay Functions
Three-Point pH Calibration
Compact 48 × 96 mm Panel Format
110 VAC or 220 VAC Supply Options
Typical Applications
Water and Wastewater Treatment
- Municipal water-treatment systems
- Municipal and industrial wastewater treatment
- Neutralization tanks
- Effluent pH monitoring
- Water-reuse systems
- Packaged water-treatment equipment
Acid and Alkali Dosing
- Acid dosing
- Alkali dosing
- Neutralization control
- pH adjustment skids
- Batch-treatment tanks
- Chemical-treatment equipment
Industrial Process Water
- Cooling-water treatment
- Circulating-water systems
- Industrial rinse water
- Process-water monitoring
- Water-treatment chemical control
- Industrial utility water
OEM Equipment and Compact Control Panels
- Chemical-dosing skids
- Water-quality monitoring panels
- Packaged wastewater-treatment systems
- Filtration and pretreatment equipment
- Neutralization equipment
- OEM pH monitoring and control systems
FAQ
No automatic temperature compensation is specified. The controller uses manual compensation and is paired with a pH electrode without an integrated temperature element.
The supplied three-point calibration values are pH 4.00, 6.86 and 9.18. Support for other buffer sets should be confirmed from the final operating instructions.
Only when the pump input and relay electrical ratings are compatible and the complete control system includes suitable interlocks. Use an interposing relay or contactor when the external load exceeds the APT11 contact rating.
The stated measured-medium range is 0–100°C. The pH electrode, holder, seals, cable and process chemistry must also be suitable for the actual temperature, while the controller itself must remain within its 0–50°C ambient range.
Prepare a 45 × 92 mm opening, stated as height × width. The housing measures 48 × 96 × 100 mm, so sufficient rear depth and wiring clearance are also required.
The controller and electrode should be treated as separately selected components unless the quotation explicitly states that a complete set is supplied.
The APT16 requires a 92 × 92 mm panel opening.
Its external dimensions are 96 × 96 × 46 mm. Reserve adequate rear space for analog, relay, pulse and RS485 wiring.
Request a Quote and pH Measurement Review
Need the APT11 controller only or a complete pH measurement and control system? Send ARTang the measured liquid, pH range, process temperature, electrode requirements, installation method, required 4–20 mA scaling, high/low control functions, AC supply voltage and connected equipment information.
ARTang will help confirm the controller version, pH electrode, panel installation, power supply and signal interface before quotation.
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.
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warehouse
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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.
