High Quality Stainless Steel Case Bimetal Thermometer for
Industrial
Bimetallic thermometer is a kind of suitable for measuring the
temperature field testing instrument, can bimetallic thermometer
used to directly measure the liquefaction, the temperature of the
gas. Compared with glass mercury thermometer has no pump, reading
clear, durable and other advantages.
The temperature measurement of the bimetal thermometer is realized
through the temperature sensing of the helical spring bimetal sheet
made of bimetal inside the system. Its bimetal material is composed
of two indivisible metal pieces, because the thermal expansion
coefficient of the two metal pieces is different and therefore in
the case of temperature changes will occur in different degrees of
stretching deformation. This stretching deformation is
approximately proportional to temperature. One end of the sheet
metal is fixed and the other end is fixed as a whole with the
indicating shaft, thus driving the indicating shaft to rotate and
indicating the corresponding temperature value on the dial when the
sheet metal stretches and deforms.
The bimetal thermometer with electric contact is equipped with
electric contact group, adjusting device and outlet box. When the
temperature changes, the pointer (moving contact) and the pre-set
temperature fixed contact (upper or lower limit) contact or
disconnect the moment, so that the control line relay or contactor
action, thus achieving automatic temperature or alarm function.
Specifications of bimetal thermometer:
Dial size: 2.5"/63mm, 3"/80mm, 4"/100mm, 5"/125mm, 6"/150mm
Case and bezel: 304stainless steel, bayonet bezel or roll ring sealed
Window: Polycarbonate or glass
Pointer and face: Aluminum
Sensing bulb and connection: 304stainless steel
Connection way: Lower mount, center back mount and every angle mount
Bulb size: 6. 3mm diameter, could make according to customer's request
Range: -40-650
Industrial bimetal thermometer adopts a multilayer metal sheet as
temperature-sensing element to control the pointer. The multilayer
metal sheet is formed by two (or more) metal sheets that are
laminated together. The element works on the principle that two
different metal expand in different amounts when temperature
changes. For example, there are two winded and ring-shaped metal
sheets. One metal sheet expands with heat and drives the pointer to
rotate, and then the instrument shows the temperature number
corresponding to thermoelectric potential.
Bimetal thermometer is widely used in petroleum and chemical
industry and other fields. And it is available in corrosive medium
and conditions.
