The Chromalox 4040 series refers to a line of 1/4 DIN temperature and process controllers designed for industrial automation and precision thermal management. Here's a detailed breakdown of the 4040-RRA110 model, one of the most commonly referenced units:

The Chromalox 4040-RRA110 is part of the 40 Series temperature and process controllers, built to handle complex industrial needs with precision and adaptability.

• Display: Dual 4-digit LED
• Input: Universal (thermocouple, RTD, voltage, current)
• Output: Relay (expandable up to 3 outputs)
• Mounting: 1/4 DIN panel
• Features:
  • Ramping setpoint
  • Adjustable hysteresis
  • Valve motor drive positioning
  • Heater break alarm
  • Remote and dual setpoint options
  • Modbus communications
  • Auto/manual tuning
  • Optional 24 VDC transmitter power supply
  • UL, cUL, CE & CSA certified