product overview

A bimetallic thermometer combines two metals with different coefficients of linear expansion, with one end fixed. When the temperature changes, the thermal expansion of the two metals is different, which drives the pointer to deflect to indicate the temperature. This is called a bimetallic thermometer.

The temperature measurement range is -80~500C, which is suitable for temperature measurement in industries with low precision requirements. Bimetallic sheets, as a temperature sensing element, can also be used for automatic temperature control.

Working principle

A pointer is installed on the free end axis. When the temperature changes, the free end of the temperature sensing device rotates accordingly, driving the pointer on the thin shaft to produce an angle change, indicating the corresponding temperature on the dial.

Product Features

① The accuracy level of the instrument can reach up to 1.0 level, and the material is made of anti-corrosion materials. Its temperature resistance can be as high as 500 ℃ and as low as -50 ℃.

② Good anti-corrosion and waterproof performance.

③ The welding of the protective tube adopts fully automatic argon gas protective tube, with a firm weld and minimal intergranular corrosion.

④ The scale plate is an aluminum printing plate with a clear and aesthetically pleasing surface.

⑤ The pointer can be fine tuned. In addition, the length of the probe of the bimetallic thermometer can be customized according to customer needs. The thermometer has the characteristics of waterproof, corrosion-resistant, vibration resistant, intuitive, easy to read, mercury free, sturdy and durable in terms of design principles and structure.

Technical Parameter

Implement industry standard JB/T8803-2015

The nominal size of the dial is 100mm and 150mm respectively

Accuracy level:

Bimetallic thermometer: Class 1.0, Class 1.5

Armored thermistor (Pt100): Class B ± (0.3 ± 0.005t)

Armored thermocouple (K, E type): Level 1 ± 1.5 ℃ or ± 0.004 | t|

Level 2 ± 2.5 ℃ or ± 0.0075 | t|

Temperature converter: ± 0.1% (range)

Protection level: IP65

Angle adjustment error (adjustable angle type, adjustable angle of 90 °) The angle adjustment error shall not exceed 1.0% of its range

Return difference: not greater than the absolute value of the basic price limit

Repeatability: The range of Jia County shall not exceed 1/2 of the absolute value of the basic error limit

Environmental temperature: -20~60 ℃

Relative humidity:<85%

Dial division table: 1 ℃, 2 ℃, 5 ℃, 10 ℃

Note 1: When the probe is of diameter 6, and when the probe is of diameter 8mm or above,

The range is 0-50 ℃ (or 0-60 ℃), L ≥ 120mm； The range is 0-50 ℃ (or 0-60 ℃), L ≥ 100mm;

The range is 0-80 ℃, L ≥ 100mm; The range is 0-80 ℃, L ≥ 80mm;

For other ranges and outer diameters, ensure that L ≥ 75mm.

In addition to the above, supply is agreed upon when the thickness is less than 75mm or L is greater than 2000mm

Note 2: When selecting threaded installation for explosion-proof bimetallic thermometers, the thread requirement is ≥ M27 (to ensure strength)

Note 3: When selecting threads for integrated bimetallic, M27 * 2 is preferred

Note 4: When the probe material is Ti, a core pulling product structure must be selected.