Howden's stall probe system keeps your fans free from operating in stall for extended periods and can avoid fan failure
Howden has listened to customers’ concerns about the calibration of the stall probes and has developed a stall probe calibration procedure. The calibration procedure ensures reliable operation of the stall probe and makes sure you are alerted in case of the fan stalling.
Axial fans running in stall can lead to catastrophic equipment failure, causing severe damage to equipment and endangering personnel.
Fans running in stall for a prolonged period of time can experience blade rupture with the result of costly replacement of major fan components as well as considerable downtime.
The Howden stall probe instantly detects the formation of a stall cell in an axial fan. Incorrect calibration or plugging (refer "Technical Bulletin 6: Howden Purge Air System") can result in the probes not detecting or warning of stall, leading to catastrophic failure because no warning is given, and the fan continues to operate in the stall region.
The stall probe detects whether a fan is running in stall or not, and correct inspection and calibration are required for optimum operation of the stall probe.