Fourtech Temperature Controller Manual Info

Press the key to select the digit you wish to change. The target digit will begin flashing.

This mode mimics a traditional thermostat. The output is fully ON until the PV reaches the SV, and then switches fully OFF.

Switches between PID (Auto-tuned control) or oNNoF (On/Off control). Proportional Band

Red upper display. Shows the current actual temperature. fourtech temperature controller manual

The is your most powerful tool for precision thermal management. While finding the exact PDF for a 15-year-old PXR model can be challenging, the logical structure of these controllers—from the PXR to the PCD series—remains remarkably consistent.

What (Thermocouple or Pt100) are you connecting?

This is almost always caused by a reversed thermocouple. Swap the wires on the back input terminals. Temperature Drifts Away from SV Press the key to select the digit you wish to change

is a versatile tool for precision thermal management. Often used as a descriptive term for multi-stage or four-channel digital controllers, these devices are essential for maintaining stable environments in industries ranging from pharmaceuticals to food storage.

Output pulse speed. Set to 20 for mechanical relays; 2 for SSRs. 4. Tuning the Control Loop

A digital temperature controller is an instrument that takes an input from a temperature sensor (like NTC) and controls a heating or cooling element to maintain a set temperature. The output is fully ON until the PV

Changing INP to the wrong sensor type will give you wildly incorrect temperature readings. Always cross-check with your manual.

Apply power to the Fourtech controller. The PV window will show the ambient room temperature.

Verify that your control mode matches your hardware. If you are using a Solid State Relay (SSR), ensure the Ctrl parameter is set to PID and the output type matches your physical unit. Run the Auto-Tuning cycle again if your physical environment changes significantly.