The new JUMO exTHERM-AT surface-mounted thermostat draws on a long tradition of explosion-protected, surface-mounted thermostats from JUMO. It features three impressive qualities: Robustness, reliability, and flexibility. Robust – with an approved operating temperature as low as -55 °C. Reliable – proven by 250,000 tested switching cycles (temperature monitor). Flexible – thanks to a wide range of options for equipment and combinations.
The JUMO exTHERM-AT can be used in all areas with a potentially
explosive atmosphere in which temperature controlling and monitoring are
required. This especially applies to the surrounding area of pipe
tracing systems, where the primary concern is monitoring the maximum
pipe temperature, and to distillation plants, where thermal processes
are controlled.
The explosion-protected JUMO exTHERM-AT can
also be used in the production of food and pharmaceutical products. It
is especially well suited to these last two application areas because it
is also available with a stainless steel case.
The device’s
ATEX approval applies to zones 1 and 2 (potentially explosive gas
atmosphere) or to zones 21 and 22 (potentially explosive dust
atmosphere). Zone separation between zones 0 and 1 is possible with
special thermowells. They make it possible to use the JUMO exTHERM-AT
(indirectly) in this area as well. The thermowells are available as
accessories in different insertion lengths.
As standard
procedure, the pressure-resistant thermostat developed by JUMO is
mounted in an IP65 case made of polyester, which is customary in the
industry. It is also available in an aluminum or stainless steel case
which fully meets the requirements of the industry.
The JUMO
exTHERM-AT offers users great flexibility. Whether it is used as a
single or double thermostat, a thermostat that has a rigid shaft with
the sleeve permanently connected to the device, or in the version with a
capillary up to 5,000 mm in length the wide range of design options
meets all expectations.
The internal pressure-resistant
enclosure and the installation in an IP65 case reflect the robust design
of the JUMO exTHERM-AT. Because of these features the instrument is
approved for ambient temperatures as low as -55 °C. That makes the
thermostat suitable for use in the coldest regions on the planet. The
maximum approved ambient temperatures when in use are +40 °C in
temperature class T6 and +70 °C in temperature class T4. The device
allows a switching capacity of 25 A at 230 V.
Tested with
250,000 switching cycles (TW), the new JUMO exTHERM-AT offers many years
of reliable service. The high-quality materials used in the thermostat
allows it to withstand all load capacities over the course of the
product lifecycle.