Description
Chromalox 3204-71001
Technical Specifications Multi‑type sensor input including thermocouple and RTD; PID auto tuning function; multiple output types including relay and solid state drive; configurable alarm functions; front panel digital display and membrane keypad; universal AC or DC power supply options.
Functional Features Samples temperature measurements from field sensors and compares readings to programmed setpoints. Automatically calculates PID gain values through auto tuning routines for different thermal loads. Supports high and low temperature deviation alarms and sensor break detection. Provides adjustable ramp and soak profiles for batch thermal processes.
Application Scenarios Industrial ovens, heat treatment furnaces, plastic molding machines, packaging heat sealing equipment and environmental thermal test chambers.
Performance Parameters High temperature measurement accuracy; smooth PID modulation; fast detection of sensor open circuit faults; stable operation in high ambient temperature control cabinets.
Material Composition Front panel casing is flame retardant plastic; internal circuit board is FR‑4 PCB; input signal conditioning chips are industrial grade; rear terminal block is nickel plated copper with insulating thermoplastic base; display window is scratch resistant polycarbonate.
Structural Characteristics Standard DIN panel mount rectangular form factor; front face with digital display, status LEDs and function keys; rear section with screw terminal blocks for sensor wiring, power supply and control output loads; integrated mounting latches for panel installation.
Working Principle Temperature sensors convert thermal conditions into millivolt or resistance signals. The controller circuitry converts these analog signals into digital values. The microprocessor compares measured temperature to the setpoint and runs PID calculations to adjust output duty cycle. Alarm outputs activate when process temperature exceeds configured threshold values.
Installation Requirements Insert the controller into the panel cutout and secure using the rear mounting latches. Connect sensor, power and load wiring following the terminal diagram. Select the correct sensor type in the configuration menu and run auto tuning after installation.
Precautions for Use Route sensor cables separately from high power AC wiring. Do not exceed the rated switching capacity of relay outputs. Avoid installation in locations with condensing moisture or corrosive vapors.
