🎛️ Category
Temperature & Process Controllers
PID and limit controllers, process controllers, and SCR power controllers for precise heat and process control.
Anderson-Bolds supplies temperature and process controllers from Watlow, Fenwal, and Novus — PID process controllers, FM-approved limit controllers, and SCR power controllers. We can pair a controller with the matching Watlow heater and sensor so the loop is sized and tuned together.
Watlow
Watlow PM PLUS 1/8 DIN FM-Approved Limit Controller
SKU: WATLOW-PM8-LIMIT
In stock — ships today
$318.00
Fenwal
Fenwal Series 05 Thermoswitch Adjustable Temperature Control
SKU: FENWAL-05-31
In stock — ships today
$88.00
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Brands in Temperature & Process Controllers
Temperature & Process Controllers — questions buyers ask
Do I need a separate limit controller?
For most heating systems, yes — a redundant high-limit controller with its own sensor protects against runaway if the primary control loop fails, and it's often required by code or insurers.