pH meter, pH controller Model MDA-PH Measure range pH: 0-14 pH, ±0.02pH ORP: -1000 ~1000mV, ±1mV Measuring medium Liquid Input Resistance ≥1012Ω Temp compensation Manual/ Auto te.
Product Introduction
The pH measurement system operates through a sophisticated yet reliable electrochemical process. It consists of a rugged pH electrode (sensor) and an intelligent transmitter (controller/display).
The pH electrode generates a millivolt-level electrical signal that is directly proportional to the hydrogen ion activity in the solution. This signal is exceptionally weak and susceptible to interference. The transmitter performs two critical functions: first, it amplifies this weak analog signal; second, it converts it into a stable digital value. This value is then calculated against the internal calibration curve (typically set at pH 4.0, 7.0, and 10.0 buffer solutions) to provide an accurate, temperature-compensated pH reading on the clear display. The two-wire or four-wire loop-powered design also allows for seamless integration into modern process control systems.
Product Advantages
Application Field
1.Wastewater Treatment
- Critical for monitoring and controlling the neutralization process in effluent treatment. Our pH meters ensure wastewater meets strict environmental discharge standards by precisely dosing acids or alkalis. The electrodes feature robust, clog-resistant designs for harsh conditions containing heavy metals and suspended solids.
2.Pharmaceuticals & Biotechnology
- In processes from fermentation to purification, pH accuracy is non-negotiable for cell viability, yield, and drug efficacy. Our high-precision, sterilisable pH systems ensure strict adherence to cGMP guidelines, providing data integrity for critical bioprocesses.
3.Food & Beverage Processing
- Essential for quality and safety in products like dairy, juices, beer, and bottled water. Our sanitary pH sensors with FDA-compliant materials and CIP (Clean-in-Place) capability ensure hygienic measurement, perfect taste consistency, and prevent microbial growth.
4.Chemical Production
- From reaction vessel monitoring to final product quality control, pH is a vital parameter. Our systems, with specialized corrosion-resistant electrodes (e.g., PTFE diaphragm, Halar body), provide dependable measurements in aggressive acids, bases, and solvents, ensuring process consistency and product purity.
Technical Parameter
| Model | MDA-PH |
| Measure range | pH: 0-14 pH, ±0.02pH |
| Measuring medium | Liquid |
| Input Resistance | ≥1012Ω |
| Temp compensation | Manual/ Auto temperature compensation |
| Temperature Range | -10~130℃， NTC10K or PT1000 |
| Communication | RS485, Modbus-RTU |
| Signal output | 4-20mA, maximum loop 750Ω, 0.2%FS |
| Power supply | 220V±10%,24V±20%,50Hz/60Hz |
| Relay output | 250V, 3A |
