A19 Series Utility Thermostats
These temperature controls are designed to cover a broad range of uses for
heating and general purpose requirements.
Controls have SPST contacts which open on tem peratureincrease or they may
be supplied in single-pole, double-throw contact action. Various control
ranges are available to cover working temperatures from -30 to 550° F (-34
to 288° C). Closed tank fittings and bulb wells are available for
These controls are designed for open low and open high applications.
Where critical or high value products are to be maintained within a
specific temperature differential, a single control should not be applied
to function as both an open low and open high control. In these
applications, a separate backup control with alarm contacts should be
wired to indicate when the back-up control operates.
Replaces Part Number: A19AUC-1
• Dependability -- precision snap-acting dusttight contacts.
• Dependability -- low volume, responsive liquid filled sensing elements.
• Wide choice of temperature control functions with a minimum number of
• Precision “repeat” accuracy which is unaffected by barometric pressure
and cross ambient problems.
• Special close differential models available.
The Series A19 is a small, compact control with adjustable or fixed
differential. Controls supplied with adjustable differential have an
internal scale plate indicating increments of differential. The controls
are supplied with adjusting lever at minimum differential stamped on the
control. To adjust move the lever to the differential
required. Models are available with or without external range adjustment
and visible scale. External range adjustment may be by screwdriver slot or
range adjusting knob