Desun Uniwill DS510 pH Sensor, 0-14pH, RS485 Output, MODBUS

The DS510 uses a standard RS485 interface communicating via the MODBUS RTU protocol. It typically requires a 2-wire connection (A and B data lines) plus power (6-12V DC and GND). You must connect it to an RS485-to-USB converter or a PLC's RS485 port and configure your software with the correct MODBUS register addresses for pH and temperature data.

Calibration is performed using standard pH buffer solutions (e.g., pH 4.01, 7.00, 10.01) via MODBUS commands sent to the sensor's calibration registers. The flat-front industrial electrode design allows for easy cleaning; periodic rinsing with distilled water and gentle cleaning with a soft brush is recommended to prevent biofilm or scaling buildup for long-term accuracy.

The sensor includes a 5-meter integrated cable. For RS485 networks, you can extend the total bus length up to 1200 meters reliably by using proper shielded twisted-pair cable and terminating the bus with 120-ohm resistors at both ends. Ensure the power supply voltage remains within 6-12V DC over the extended cable run to account for voltage drop.

Yes, its SS316 stainless steel and POM plastic housing provides excellent corrosion resistance against many chemicals, including mild acids, alkalis, and seawater. However, for prolonged exposure to highly concentrated acids or specific aggressive chemicals, verifying material compatibility against the SS316 and POM chemical resistance charts is advised.