II uses the same electrical contact principle as our
original Thermalarm. When the temperature reaches either
of the user-adjustable high or low limit hands, the
temperature indicating hand comes in contact with the
limit set hand and acts as a switch, closing an electrical
alarm circuit. These hands are gold plated to improve
their electrical conductivity and to reduce corrosion.
of the high and low limits is made by simply loosening
the locking nut located on the front of the Thermalarm,
turning the adjustment screw to the desired temperature,
then tightening the locking nut.
II is well-suited to applications requiring a narrow
high-low temperature range, or where recurring temperature
fluctuations of only a few degrees must be sensed.
range of the Thermalarm II is from 20°F to 110°F.
Other temperature ranges may be available. Please
contact us for more information.