Precision High-Low failsafes and Safety Options

 

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The Model PFS-2 Precision failsafe is a convenient, digital switch adjustable unit designed for easy and rapid setting of both high and low limits. Standard temperature range is -99°C to +199°C, with high temp model having a range of -99°C to +299°C.

This is the perfect unit for environments where the limits are changed often or where supervisory personnel need to be able to visually check settings.

When the high or low limit set with the failsafe is exceeded, the main heating and cooling power relay is disengaged by the failsafe and the controller is notified of the event.

The Model PFS-1 Precision failsafe is a simple screwdriver adjustable unit designed for applications where the failsafe setting does not get adjusted often.  Standard temperature range is -100°C to +200°C.   Other ranges available.

This is the perfect unit for production environments where settings are long term and operator access to the failsafe is not desired.

When the high or low limit set with the failsafe is exceeded, the main heating and cooling power relay is disengaged by the failsafe and the controller is notified of the event.

 

 

 

Piezo Alarm - Piezo alarm with PFS-2.  The Piezo alarm provides an audible confirmation that a failsafe condition exist. Redundant Valves - Redundant coolant shut-off valves wired to a failsafe provides a backup cutoff for the coolant flow in the event that the primary valve is stuck open.
 
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