Shengda supplies steel water melting handheld thermometer W330 with a one-year warranty

Working principle

Shengda manufacturer's digital steel melting thermometer W330 comes with a one-year warranty This instrument uses thermocouples as the temperature sensing components. The thermoelectric potential generated during thermocouple temperature measurement is amplified by the pre amplification device of the instrument, converted into a digital quantity by the A/D converter, and then sent to the microcomputer for data processing, implementing automatic compensation of ambient temperature, zero self calibration, automatic display and maintenance of furnace temperature stability value.

Shengda supplies steel water melting handheld thermometer W330 with a one-year warrantyWhen the handheld melting thermometer completes the temperature measurement, it displays the measured temperature value and maintains it for any time. At the same time, the buzzer sounds synchronously to prompt the lifting of the test gun.

purpose

The W330 portable smelting thermometer is a high-precision instrument developed for the rapid measurement of molten metal temperature in industries such as smelting and casting.

This instrument is based on a high-performance single-chip microcomputer, uses high-precision measurement sensor devices, and adopts various intelligent processing technologies to ensure long-term stable operation of the instrument. Improved the anti-interference ability of the instrument.

This instrument, when paired with suitable thermocouples, can perform precise and rapid temperature measurement in various situations

calibration
Shengda supplies steel water melting handheld thermometer W330 with a one-year warranty This instrument should undergo necessary calibration after one year of use.

Calibration method: Subtract the potential value corresponding to the ambient temperature from the thermoelectric potential value provided by the thermocouple (data shown in Table 1) (data shown in Table 2; "B" type instrument does not require ambient temperature compensation), and input the difference into this instrument using a 0.05 level standard DC potentiometer. Observe and display the data. Adjust potentiometer R16 (resistance mark 201) at the position shown in the figure on the right. The steps are as follows: input the upper limit value of the range, observe the display result. If it exceeds the error range, adjust potentiometer R16 to bring the displayed temperature number into the normal range; Enter the lower limit value of the measuring range again, observe the display result, adjust the R16 potentiometer, and repeat this process multiple times until the error returns to within the allowable range of the portable thermometer circuit board before sealing the machine for use.