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H18 pH Controller
● Ultra-strong anti-interference capability—data remains intact even during power loss
● Manual/automatic temperature compensation, online verification of test data
● Backlit, extra-large dot-matrix LCD
● Multiple output signals available
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Product Description
Product Overview Product overview
A pH controller is an intelligent instrument designed to measure the acidity or alkalinity of water by detecting hydrogen ion concentration via a pH electrode. It utilizes a combination of a glass pH electrode and a reference electrode to create a complete electrochemical cell. By measuring the potential difference across this cell, the device accurately calculates the pH value of the liquid medium. This tool enables rapid and precise pH monitoring in various applications, including water quality, environmental analysis, and food processing. It is widely used in industries such as power generation, chemical manufacturing, biopharmaceuticals, semiconductors, and for online pH/ORP monitoring in ultrapure water systems.
Performance metrics TECHNICAL PARAMETERS
| pH | Measurement range | -2.00 to 16.00 pH |
| Resolution | 0.01PH | |
| Measurement accuracy | ±0.01 pH | |
| Input impedance | ≥1012 Ω | |
| ORP | Measurement range | -2000 to 2000 mV |
| Resolution | 1mV | |
| Measurement accuracy | ±1 mV | |
| Temperature Compensation | Compensation Scope | -10.0°C to 130°C |
| Resolution | 0.1℃ | |
| Measurement accuracy | ±0.2°C | |
| Temperature input | PT1000/NTC10K | |
| Temperature Compensation Mode | Manual/Automatic | |
| Current output | PH/ORP Signal Output | 4-20mA (adjustable) |
| Current Accuracy | ±0.05mA | |
| Output load | ≤500Ω | |
| Relay | Load capacity | 5A 250VAC / 5A 30VDC |
| Data Communication | RS485 | Supports MODBUS-RTU |
| Other | Working power | 100–260 VAC (optional) |
| Operating temperature | 0–70°C | |
| Protection Level | IP65 (panel), with a cooling grille inside the enclosure. | |
| Installation method | Dial installation | |
| External dimensions | (H×W×D) 144 × 144 × 120 mm | |
| Hole size | 138 x 138 mm | |
| Weight | 0.85kg |
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Tianjin Ling Yu Technology Co., Ltd.
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