1、 Temperature and humidity: Avoid extreme environmental conditions affecting equipment performance

Environmental temperature: It is recommended to control it between 10 ℃ and 35 ℃.

Low temperature (<10 ℃) can cause power fluctuations when the heating plate starts, affecting the heating rate; Excessive ambient temperature (>35 ℃) can reduce heat dissipation efficiency and may cause internal components of the equipment (such as temperature control modules) to overheat and be damaged. Especially when used continuously for a long time, ventilation needs to be strengthened.

Relative humidity: should be ≤ 80% (without condensation).

Although graphite is resistant to high temperatures, the internal circuits and wiring terminals of equipment are sensitive to moisture, and excessive humidity can easily cause short circuits or corrosion of metal components. If used in high humidity environments (such as laboratory areas near sinks), a moisture-proof pad should be placed under the heating plate and the bottom of the equipment should be regularly blown with dry air.

2、 Cleanliness: prevent pollutants from damaging the surface of graphite

The core component of a graphite heating plate is the graphite tabletop, which has a porous structure that is prone to absorbing impurities and requires a clean environment

Non corrosive gas: Keep away from acid-base volatile sources (such as nitric acid, hydrochloric acid storage cabinets, sulfide experimental areas).

Corrosive gases can react with graphite (especially at high temperatures), causing pitting and cracking on the countertop, reducing thermal conductivity uniformity. If it needs to be used in a chemical laboratory, a local exhaust device (such as a fume hood) should be equipped to promptly remove volatile gases.

Reduce dust and particulate matter: Avoid direct use in dusty environments such as ore grinding areas and cement laboratories.

After dust falls into the gaps on the surface of graphite, it may carbonize and agglomerate at high temperatures, affecting the heating flatness. Wipe the countertop with a dust-free cloth before use, and cover it with a dust cover when not in use for a long time.

3、 Placement space: Reserve distance for operation and heat dissipation

Horizontal placement with even load-bearing capacity:

It should be placed on a flat and stable experimental platform (with a load-bearing capacity ≥ 1.5 times the weight of the equipment), avoiding tilting (tilting angle>5 ° may cause the heated sample to slip off). If there are grooves or protrusions on the countertop, they should be leveled before use to prevent the graphite board from cracking due to uneven stress.

Reserved heat dissipation space:

A space of ≥ 30cm should be reserved around the device (especially on the back and bottom) to ensure smooth ventilation of the heat dissipation holes. Do not stack debris (such as reagent bottles, beakers) above the heating plate to avoid blocking heat dissipation; Flammable materials (such as paper or plastic boxes) should not be placed below to prevent fires caused by high temperature baking.

4、 Power and Grounding: Ensuring Electrical Safety

Power matching:

An independent power supply with the same rated voltage and frequency as the equipment (such as 220V ± 10%, 50Hz) should be used to avoid sharing the same socket with high-power equipment (such as centrifuges and air compressors) and prevent temperature control failure caused by voltage fluctuations. The power supply circuit must meet the load requirements (wire diameter ≥ the standard corresponding to the rated current of the equipment, such as 10A equipment requiring ≥ 1.5mm ² copper wire).

Reliable grounding:

It is necessary to connect a protective grounding wire (PE wire). Although graphite is a conductor, if the metal casing of the equipment is charged due to leakage, grounding can avoid the risk of electric shock. Before each use, check if the grounding wire is loose, especially after moving the device, and reconfirm that the grounding is good.

Summary: Core Principles

The usage environment of graphite heating plates should revolve around "protecting the graphite table, stabilizing equipment operation, and ensuring operational safety", with a focus on controlling temperature, humidity, cleanliness, and power conditions. At the same time, local environments (such as ventilation and fire prevention measures) should be adjusted according to experimental types (such as chemical digestion and sample drying). Reasonable environmental settings can not only prolong equipment life (reduce failures caused by corrosion and overheating), but also ensure the stability and data accuracy of the heating process.