Our range of dial thermometers encompasses dial thermometers, dial remote-reading thermometers, and bimetallic dial thermometers. Our dial thermometers and dial remote-reading thermometers work according to the thermal expansion principle. Our bimetallic dial thermometers work according to the bimetallic helix principle. All of our thermometers comply with the DIN EN 13190 Class 1 standard.

Gas pressure dial thermometers
Type 341 and 347 as well as type 6312 to 1373 dial thermometers operate on the expansion principle. The non-toxic gas (primarily nitrogen) in the measuring system expands with rising temperature. This causes an increase in pressure, which deforms the bourdon tube. This deformation is converted into pointer rotation by mechanical components and an instrument mechanism. The resulting pointer deflection is proportional to the temperature change. Dial thermometer types 341 and 347 are the tried and tested industrial solution for in situ, local temperature measurement of fluids and gases in the industrial sector. They are ideal for installation in pipelines, containers, machines and plants, have a long service life and do not require any external power. Diesel engine thermometer types 6312 to 1372 are the ideal solution for local temperature measurement of fluids and gases on large diesel engines, e.g. for marine propulsion or in the diesel electric power generation area. Depending on the display range, they are useful for measuring exhaust gas, cooling water, lubricating oil and charge air temperatures. All models of our dial thermometers conform to EN 13190 Class 1.

Remote reading gas pressure dial thermometers
Our remote reading versions also operate on the gas expansion principle. The technical information regarding local reading dial thermometers is therefore basically applicable to them as well. Dial thermometerstypes 313, 323, 333 and 334 are the tried and tested industrial solution for in situ, local temperature measurement of fluids and gases in the industrial sector. They are ideal for installation in pipelines, containers, machines and plants, have a long service life and do not require any external power. All models of our remote reading dial thermometers conform to EN 13190 Class 1.

Bi-metal dial thermometers
Our local reading industrial thermometers operate on the bi-metal coil principle. The bi-metal coil is enclosed in a stainless steel immersion tube and exposed to the temperature of the measured medium. The coil twist varies with rising or falling temperature. This twist acts directly on the pointer via an axle. The resulting pointer deflection is therefore proportional to the change in temperature. All models of SIKA bi-metal dial thermometers type 6xx are conform to EN 13190 Class 1.