A19 Series Utility Thermostats for Farm,
Industrial and Commercial Use
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 temperature increase 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 immersion applications. 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.
• 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.
A built-in high cutout stop is an integral part of these controls and may be
adjusted quickly and easily in the field.
Replaces Part Numbers: A19ADC-11