Liquid expansion thermostats
Liquid expansion thermostats, with bulb and capillary in copper or stainless steel, are intended to ensure the safety and regulation of heating or cooling systems.
Comprising 1, 2 or 3 contacts, they can be supplied bare or in an IP30 to IP55 plastic or aluminum protective case.
Bare liquid expansion thermostats and IP55 aluminum enclosure
Rod thermostats
Maximum breaking capacity: 20 A at 400 V tri. Several temperature ranges adjustable by button are available from -30°C mini to 550°C maxi.
Rod models with fixing connection, models with positive safety or equipped with 2 bulbs in order to ensure at the same time the functions of regulation and safety and limiters with preset threshold complete the COALA range.
Electromechanical thermostats:
Electro-mechanical thermostats use the metallic expansion of the cartridge to actuate an electric bimetallic strip. The set point (bimetallic voltage) is externally adjustable by micrometric screw.
COALA electro-mechanical thermostats are intended to control the temperature of solids by insertion into a bore, gases and liquids by insertion into a thermowell up to 315°C, 20 bar. They are also commonly used in the field of fire safety.
ATEX liquid expansion thermostat
Electro-mechanical thermostats
The 1/2″ or 5/8″ diameter 304 stainless steel cartridge can be equipped with an NPT threaded connection or a flange allowing easy mounting on the wall of a duct or an enclosure.
COALA electro-mechanical thermostats, with NO or NC output contact, are available with output by wires, with IP65 plug-in connector, or in an IP65 aluminum or stainless steel protection box with 1 or 2 cable glands.
Sondes et thermocouples :
COALA manufactures according to a standard or tailor-made range, PT100 platinum probe technology temperature sensors and thermocouples (K, J, S, etc.).
The temperature probes are available in different diameters (metric or gas) and lengths, in different materials (stainless steel, inconel), in flexible or rigid sheath, by cable outlet or under aluminum or stainless steel cover, and can be equipped with fixing devices (fixed or sliding threaded connection, flange, etc.).
As an option, measurement converters (single or double), for 4-20 mA analog signal output, are mounted in the probe heads.
PT100 probes and thermocouples
Thermostats électro-mécaniques
Models of COALA thermostats and temperature sensors are also ATEX certified according to directive 2014/34/EU, for installation in an explosive atmosphere (risk zones 1 and 2), for a temperature class T5 and T6 with protection mode ” d” and “de” for thermostats, “d” and “ia” for temperature sensors.