Explanation of technical parameters and terminology for box type muffle furnace
Reachable temperature: refers to the maximum temperature that the device can reach
Working temperature: refers to the temperature range that can work continuously and stably
Temperature control accuracy: refers to the degree of error in temperature control by the temperature controller. For example, the temperature control accuracy is ± 1 ℃ (also understood as the minimum value displayed by the temperature control instrument). Our company’s temperature control instrument has a temperature control accuracy of<1000 ± 0.1 ℃; ≥1000±1℃
Temperature uniformity: The degree of temperature uniformity within the working area of a box furnace in a thermally stable state at the test temperature. The maximum difference (positive or negative) obtained by subtracting the set temperature (i.e. the avoidance measured at the monitoring point) from the true temperature measured at multiple designated temperature measurement points (usually nine temperature measurement points) inside the furnace.
Furnace temperature stability: The degree of stability of the temperature at the control point of the box furnace during the thermal stability state at the test temperature. For example, when the insulation is set to 800 degrees, the actual temperature fluctuates between 800-801 degrees, and the stability can be considered as+-1 degree.
Heating rate: how many minutes it takes to reach a certain temperature. For example, the instrument setting takes 60 minutes to rise from 0 degrees to 900 degrees, which can be understood as 15 degrees per minute. We generally recommend that the heating rate not be too fast, as it may affect the service life of the heating element.
Furnace volume: The working area has a large volume, and the box furnace is deep, wide, and high.
Heating element: The selection of heating elements varies depending on the temperature. Generally, alloy resistance wires are used for 1200 ℃, silicon carbon rods are used for 1400 ℃, and silicon molybdenum rods are used for temperatures above 1400 ℃.
Temperature sensor: refers to a sensor that can sense temperature and convert it into a usable output signal. We commonly use K-type, S-type, and B-type. K-type is a nickel chromium alloy thermocouple with a measurement range of 0-1300 ℃. The S-type is a single platinum rhodium thermocouple with a measurement range of 0-1500 ℃. Type B is a dual platinum rhodium thermocouple with a measurement range of 0-1800 ℃
Furnace insulation material: Our company uses high-purity alumina polycrystalline fiber material, namely ceramic fiber. The model used varies depending on the temperature.
Temperature control instrument: The control method is to adjust the temperature with a temperature control meter, and our instrument uses PID control.
Instrument display and setting method: commonly used is LED digital display, with physical button settings. Touch screen instrument panel, LCD touch screen display and settings can also be optionally selected.
Overtemperature protection: refers to the alarm and power outage when the temperature inside the furnace exceeds the set protection temperature. For example, our instrument is set to a deviation alarm of 100 degrees. For example, if the program sets the temperature to 800 degrees, but the actual measured temperature is 900 degrees, an alarm will sound and heating will stop.
Power off when opening the door: After opening the furnace door, the power supply of the heating module is automatically cut off to stop heating.
