Omika provide a variety of temperature gauges to cater to a range of industrial applications.

Bimetallic Dial Temperature gauge

The bimetallic element consists of two welded together, metal tapes. The tapes having different coefficients of thermal expansion. It converts the media’s temperature into mechanical displacement using a bimetallic strip. The coiled measuring element is fixed at the end of the stem; the other side being connected to the pointer axle.

Bi-metal dial thermometers are used for temperatures from – 50°C up to +500 C.

Accuracy is ± 1,6% of full scale deflection.

Working principle:

Bimetal thermometers work on the principle that different metals expand at different rates as they are heated. By using two strips of different metals in a thermometer, the movement of the strips correlates to temperature and can be indicated along a scale.

Gas filled dial thermometer

This type of  temperature gauge having the capillary and the Bourdon tube which are joined together into one unit. The instrument is filled with inert gas. If the temperature changes, the internal pressure will also change. The pointer is moved by the action of the pressure via a measuring tube.

Gas-filled dial thermometers are used for temperatures from -80°C up to +600°C.

Accuracy is ± 1% of full scale deflection.

Working Principle:

The measuring principle is based on the volumetric temperature expansion of the gas filling in the measuring element. The measuring element is firmly connected by a capillary tube with a measuring spring. The spring transfers the expansion of the gas filling by a movement on a dial.