Sensor type, control action, output and supply voltage all matter when selecting a temperature controller. A practical checklist using Multispan models as examples.
Start with the sensor
Decide whether your process uses a thermocouple (J, K) or an RTD (PT-100). The Multispan TC 510, for example, accepts J, K, PT-100 and PT.1 inputs, covering most industrial ranges.
ON-OFF or PID control?
ON-OFF control is simple and fine for many heating and cooling jobs. PID control holds a tighter setpoint for processes that need precision — the TC 510 supports both.
Match the output to the load
Relay outputs suit contactors and heaters; SSR outputs suit fast, high-cycle switching. Check the current rating against your load.
Supply voltage and mounting
Confirm the auxiliary supply (for example 100 to 270 V AC universal) and the panel cut-out size before ordering, so the controller drops straight in.
Need help choosing?
As the authorized Multispan distributor, we will help you pick the right controller and a drop-in replacement if you are upgrading. Ask us for a recommendation.
