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Good, Working Cole-Parmer 500 PH / 500 pH/ORP/Temperature 1/4 DIN Controller
This listing is for a Good, Working Cole-Parmer 500 pH/ORP/Temperature Controller, designed in the standard 1/4 DIN panel-mount format.
The controller powers on, the display is clear, buttons respond properly, and all menu functions are accessible.
This is a great replacement controller for industrial, laboratory, water-treatment, or process-monitoring systems requiring accurate pH, ORP, and temperature control.
🔧 Condition
Good Working Condition
Tested: unit powers on normally
LCD display is bright and easy to read
Keypad responsive
Inputs & outputs functional (basic tests performed)
Normal cosmetic wear from previous use
📦 Included
Cole-Parmer 500 PH pH/ORP/Temp Controller (1/4 DIN)
Terminal blocks and rear connectors as shown in photos
(No probes included unless pictured)
🌟 Key Features
1/4-DIN panel-mounted multifunction controller
Monitors pH, ORP (mV), and Temperature
Automatic temperature compensation
On/Off control with multiple relays
Programmable ranges and alarms
Industrial-grade design for continuous monitoring
LCD display for real-time measurement and control values
5 × SPDT relays for flexible process integration
4–20 mA output for PLCs, data loggers, and process systems
📐 Technical Specifications
(Factory specs for the Cole-Parmer 500 series controller)
pH Measurement
• Range: 0 to 16 pH
• Resolution: 0.01 pH
• Accuracy: ±0.1% pH ± 1 LSD
ORP / mV Measurement
• Range: –2500 to +2500 mV
• Resolution: 1 mV
• Accuracy: ±2 mV
Temperature Measurement
• Range: –10°C to 120°C (14°F to 248°F)
• Resolution: 0.1°
• Accuracy: ±0.3°C
• Compensation: Automatic
Outputs & Control
• 5 × SPDT relays
• Analog Output: 4–20 mA
• Password protection
Power Requirements
• Voltage: 115 / 230 VAC
• Frequency: 50/60 Hz
Dimensions
• 1/4 DIN housing
• Width: 3.75 in (9.53 cm)
• Height: 3.75 in (9.53 cm)
• Depth: 5 13/16 in
🧪 Ideal For
Water & wastewater treatment
Environmental monitoring
Chemical processing
Industrial automation
Aquaculture & hydroponics
Laboratory pH/ORP/temperature control systems
🚚 Shipping
Ships within 1 business day
Professionally packaged for safe transit
Tracking included
Cole-Parmer 500 pH controller
1/4 DIN pH/ORP controller
Industrial pH controller
Water treatment controller
ORP process controller
Cole Parmer 500PH
