A11PR Smart pH/ORP Online Controller, engineered for demanding industrial environments, delivers ±0.01pH precision monitoring at its core. Featuring dual PT1000/NTC10K temperature compensation with automatic adaptation, it ensures stable, drift-free data 24/7. Its three flexible relays support seven alarm modes, allowing customizable thresholds and hysteresis values to effortlessly achieve precise control requirements such as chemical dosing interlocking and risk alerts.
★★★★★
Features
Specifications
| Measuring range | pH (0–14 pH, 0.0–14.0 pH, 0.00–14.00 pH) ORP (-1999 to +1999 mV) |
| Accuracy | ±0.01 pH; ±1 mV |
| Resolution | 0.01 pH; 1 mV |
| Stability | ≤ 0.02 pH/24 hours; ≤ 3 mV/24 hours |
| Temperature Compensation | 0–100 °C Manual / Automatic (PT1000/NTC10K) |
| Signal Output | 4–20mA isolated protection output, independently corresponding to pH/ORP or temperature, with a load capacity up to 500Ω |
| Alarm Output | Three sets of high/low point alarms (3A/250 V AC) with freely assignable relay contacts |
| Power Supply | AC220V or DC24V |
| Power Consumption | ≤ 7W |
| Environmental Conditions | Temperature: 0–60 °C; Humidity ≤ 85% RH |
| Overall Dimensions | 96 × 96 × 128 mm (Height × Width × Depth) |
| Opening Size | 92 × 92 mm (height × width) |
Core Functionality: The devil is in the details.
Intelligent User Interface—Intuitive Information, Efficient Operation
- The main interface clearly displays pH/ORP/temperature and current output values, with relay status lights providing real-time alerts for alarm conditions;
- Press the “Enter” key to view system parameters; use the “Right Key” to instantly retrieve alarm records—no need to navigate through multiple layers for critical information;
- Backlight supports 30-second/60-second/always-on modes, ensuring clear readings even in bright light.
Professional Calibration System—Precision in One Step
- Supports two-point/three-point calibration with automatic standard solution recognition; stable mV value prompts during calibration prevent operational errors;
- Displays “Preheat for 30 minutes” prior to calibration to ensure measurement accuracy; calibration data is automatically stored for traceability;
- ORP calibration supports manual input of standard solution values to accommodate varying standard solution requirements.
Flexible Output Control—Adapting to All Scenario Needs
| Output Type | Core Competitive Advantages | Suitable Scenarios |
|---|---|---|
| 3 sets of relays | 7 operating modes, adjustable hysteresis, 3A/220V AC contacts | Dosing control and alarm light interlocking |
| 4-20mA current | Isolated output, maximum load 500Ω, supports measurement value/temperature value output | PLC system integration and remote data transmission |
| RS485 Communication | Modbus RTU protocol, adjustable baud rate, supports data read/write | Centralized Monitoring Platform Implementation |
Applicable Scenarios: Water Quality Monitoring Solutions for All Industries
Municipal Wastewater Treatment
pH/ORP monitoring in biochemical tanks, with integrated chemical dosing systems ensuring compliance
Chemical/Pharmaceutical
Corrosive medium monitoring for precise reaction process control
Electronics/Semiconductor
High-precision ultrapure water monitoring meeting stringent production requirements
Food/Drinking Water
Production water safety monitoring compliant with GB 5749 standards
Also suitable for power generation, swimming pools, aquaculture, and other applications, supporting customized parameter settings
Composition of Online pH/ORP Controllers
Core Components: Taking the A11PR as an example, it operates through the coordinated function of four major modules:
- Sensing and Acquisition (pH/ORP electrode + dual temperature-compensated sensor), converting water quality signals into electrical signals;
- Signal Processing (high-precision chip + isolation circuit), amplifying, filtering, and resisting interference;
- Intelligent Control (embedded processor), executing compensation calculations and parameter storage;
- Output Feedback (3 sets of relays + communication interface), enabling interlock control and remote data transmission. Output Feedback (3 sets of relays + communication interfaces) enables linked control and remote data transmission.
Technical Support
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Choose A11PR, unlock a new level of intelligent water quality control.
From the highly disruptive environments of chemical plants to the extreme precision demands of ultrapure water in electronics factories, the A11PR achieves three core breakthroughs—“high-precision upgrades, intelligent experience, and full-scenario adaptability”—to perfectly resolve the performance bottlenecks of basic controllers. With ±0.01pH measurement accuracy, dual-temperature compensation auto-adaptation, and three flexible relay alarms, it ensures both precise and hassle-free data monitoring in complex operating conditions. Features like Chinese-English language switching and direct Modbus communication with LIMS systems balance operational convenience with compliance requirements. IP65 protection and isolated output design further ensure 24/7 stable operation in industrial environments.
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