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RC861P Online pH/ORP Meter 1. The RC861P online pH/ORP meter boasts strong environmental adaptability, a clear display, simple operation, and excellent measurement capabilities, which give it high cost-performance; it can accurately measure the pH/ORP value and temperature of solutions. It can be widely used for the continuous monitoring of pH/ORP values in solutions from industries such as thermal power, chemical fertilizers, metallurgy, environmental protection, pharmaceuticals, biochemistry, food, and tap water. 2. Display method of technical parameters: LED (digital tube) display, offering high brightness for clear and intuitive viewing over long distances. Measurement range: 0〜14.0 pH, -1999〜+1999 mV, -5〜110°C. Resolution: 0.01 pH, 0.1 mV, 0.1°C. Accuracy: ±0.01 pH, ±0.5 mV, ±0.3°C. Input impedance: > 1X1012 Ω. Temperature compensation range: automatic –5〜110°C, manual –5〜110°C. Current output: adjustable via software from 0〜10 mA (when the load is < 1.5 KΩ) or 4〜20 mA (when the load is higher). Weight and dimensions: 0.7 Kg, 96X96X130 mm. Opening size: 92X92 mm. Instrument installation options: through-hole, wall-mounted, or rack-mounted. Electrode installation options: flow-through, submersible, flange-type, pipe-type, or side-wall type. Standard configuration: one secondary meter and one electrode. 3. Key features: Dual-row digital display showing temperature, pH value, and mV value separately. Microcomputerization: By using high-performance CPU chips, high-precision AD conversion technology, and SMT mounting technology, it enables multi-parameter measurement, temperature compensation, and instrument self-checking, offering high precision and good repeatability. High reliability: single-board design, touch buttons, no switch knobs. 2 Conversion at 5°C: Temperature compensation for the Nernst electrode slope, for pure water and ammonia-added ultra-pure water at 25 °C. Input impedance: > 1 012 Q. Automatic conversion of standard solution temperature: A temperature curve for the standard solution is pre-stored, and the pH value of the standard solution at the set temperature is automatically calculated during calibration. Automatic alarm function: Alarm signals are output in an isolated manner; the upper and lower alarm limits can be set arbitrarily, and alarms can be canceled with a delay. Automatic detection of incorrect calibration: If the user uses the standard buffer incorrectly during calibration, the instrument will give an automatic alert. Network functions: Isolated current output and RS485 communication interface; the upper and lower limits of the PH value corresponding to the output current can be set arbitrarily. Industrial control watchdog: Ensures that the instrument does not freeze. Ordering guide: 1. Are the electrodes dual-composite or triple-composite? ； Please refer to Section 2 of this manual, “RCP8 Series Online Analysis Sensors (Electrodes)”: 2. The length of the electrode cable – 5m is the standard length unless otherwise specified; 3. If the cable length exceeds 20m, a PHRT-2 impedance converter manufactured by our company should be used ； 4. Installation method of electrodes and secondary meters.