Cole-Parmer 500 pH/ORP

Cole-Parmer 500 pH/ORP/Temperature 1/4-DIN Controller

Description
The Cole-Parmer 500 pH/ORP/Temperature Controller is a high-performance 1/4-DIN instrument designed for accurate monitoring and control of pH, oxidation-reduction potential (ORP), and temperature in industrial and laboratory processes. It combines precise measurement, flexible control outputs, and secure system features in a compact, panel-mountable enclosure. The controller is well suited for demanding applications that require reliability, accuracy, and remote communication capability.

Key Feature 

• Measures pH, ORP (mV), and temperature in a single controller

• Isolated and reversible 4–20 mA output for proportional control

• Five programmable SPDT relays (four assignable to pH/ORP, one to temperature) for on/off control

• Backlit graphic LCD displaying measurement values, temperature, electrode condition, relay status, and output current

• Automatic buffer recognition supporting US and NIST pH buffers

• Automatic temperature compensation (ATC) with selectable sensor types:

  • 10K NTC

  • 3K Ω Balco

  • 1000 Ω Platinum RTD

• RS-485 communication for remote monitoring and control of multiple units

• Password protection to prevent unauthorized access

• Calibration data stored in memory for immediate use after power cycling