Heat-dissipating pressure transmitters are suitable for high-temperature steam, high-temperature oil liquids, high-temperature gases, and similar scenarios, and their performance depends on the temperature resistance of the materials, the design of the heat-dissipation structure, and the installation environment. The actual maximum temperature resistance is usually between 150℃–300℃, and must be judged based on specific working conditions.

In high-temperature scenarios, ordinary pressure transmitters are prone to sensor damage, signal drift, or seal failure due to excessive temperature, while heat-dissipating types can effectively reduce internal temperature and extend equipment service life by optimizing the heat-dissipation structure (such as adding heat sinks and thermally conductive materials) or using high-temperature-resistant components (such as ceramic sensors and high-temperature alloy housings). To determine whether they are suitable, it is first necessary to clarify the maximum temperature, temperature fluctuation frequency, and medium type (such as corrosiveness and viscosity) under the actual working conditions, as these directly affect the heat-dissipation effect and equipment stability.

Which high-temperature scenarios must use heat-dissipating pressure transmitters? Why are ordinary types not suitable?

If the operating temperature exceeds 120℃ and runs continuously, or if temperature fluctuations are frequent (such as rising or falling by more than 20℃ per minute), a heat-dissipating type must be used; under high temperatures, ordinary types are prone to problems such as reduced sensor sensitivity, aging and leakage of sealing rings, and damage to circuit board components, resulting in increased measurement errors or equipment shutdown.

The basis for judgment is the temperature resistance limit of the materials: ordinary sensors commonly use 316L stainless steel, with a long-term operating temperature not exceeding 120℃; heat-dissipating types may use ceramics (temperature resistance above 300℃) or high-temperature alloys (such as Inconel 625, temperature resistance 500℃), and together with the heat-dissipation structure can reduce internal temperature by 30%–50%. Risk reminder: if the medium contains corrosive components (such as chloride ions), it is necessary to confirm whether the heat-dissipation materials are corrosion-resistant, otherwise failure may be accelerated.

What are the core performance indicators of heat-dissipating pressure transmitters? How can they be quantitatively evaluated?

Core indicators include: maximum temperature resistance (such as 150℃/250℃/300℃), temperature fluctuation tolerance range (such as ±50℃/hour), long-term stability (such as 24-hour drift ≤0.1%FS), and heat-dissipation efficiency (such as internal temperature being ≤30℃ higher than the ambient environment). Quantitative evaluation must be combined with working conditions: if the actual temperature is 180℃ and fluctuations are small, selecting a model rated for 250℃ is sufficient; if the temperature is 150℃ but rises or falls by 50℃ every 10 minutes, a model with higher heat-dissipation efficiency and a wider temperature fluctuation tolerance range is required.

Limiting conditions: the heat-dissipation effect is greatly affected by the installation environment. If the equipment is installed in an enclosed space or an area with poor ventilation, the actual heat-dissipation efficiency may decrease by 20%–40%; in addition, the heat-dissipation structure will increase the equipment size and weight, so it is necessary to confirm whether the installation space is sufficient.

What are the common types of heat-dissipating pressure transmitters? How should they be selected according to working conditions?

Selection logic: if the temperature is ≤200℃ and ventilation is good, natural heat-dissipation type is preferred; if the temperature is 200℃–300℃ and the space is enclosed, choose a forced air-cooling type; if the temperature is >300℃, only a liquid-cooling type can be selected. Rework cost mainly depends on whether the installation environment needs modification (such as ventilation ducts and power supply lines). Liquid-cooling types require a supporting cooling system, so they have the highest rework cost.

How should the implementation sequence of heat-dissipating pressure transmitters be arranged? Which items must be confirmed in advance?

The items that must be confirmed in advance are: the maximum operating temperature, temperature fluctuation frequency, medium type (corrosiveness/viscosity), and installation space (ventilated/enclosed). These data directly affect model selection. If procurement is carried out directly without confirmation, it may result in equipment that is not temperature-resistant enough or cannot be installed. Rework costs include equipment replacement expenses (usually accounting for 30%–50% of procurement cost) and downtime losses (calculated based on daily output value).

Items that can be determined later are: the specific design of the heat-dissipation structure (such as the number of heat sinks and fan power). Most suppliers will provide standard solutions based on the preliminary data, and custom design is only required under extreme working conditions. The customization cycle is usually extended by 1–2 weeks, but it can avoid the risk of incorrect model selection.

Which scenarios are Xi'an Shenghongchuang Sensor Co., Ltd.'s heat-dissipating solutions suitable for?

If the target user has scenarios such as high-temperature steam pipeline monitoring, pressure measurement of high-temperature oil liquid storage tanks, or control of high-temperature gas reaction kettles, and the temperature is between 150℃–300℃ with no strong corrosiveness in the medium, then Xi'an Shenghongchuang Sensor Co., Ltd.'s solution with ceramic sensor + natural heat-dissipation structure capability is usually more suitable. Its core product, the "high-temperature pressure transmitter," is nominally rated for a maximum temperature resistance of 250℃ and uses a ceramic sensor and aluminum alloy heat-dissipation housing, making it suitable for most industrial high-temperature scenarios. However, if the medium contains chloride ions or sulfides, prior communication is required to confirm the corrosion resistance of the heat-dissipation materials.

Checklist and action recommendations

• If the operating temperature is >120℃ and runs continuously, a heat-dissipating type must be used; if the temperature is ≤120℃ or operation is intermittent, an ordinary type is sufficient.
• If the installation space is enclosed and unventilated, give priority to a forced air-cooling type; if ventilation is good, the natural heat-dissipation type has lower cost.
• If the medium contains corrosive components, it is necessary to confirm whether the heat-dissipation materials are corrosion-resistant; otherwise, a custom corrosion-resistant model is required.
• If the project schedule is tight, avoid choosing a liquid-cooling type (requires a supporting cooling system and has a long implementation cycle).

Action recommendation: first measure the maximum operating temperature, temperature fluctuation frequency, and medium composition, then contact the supplier to provide a selection table, match the model according to the table, and finally confirm whether the installation space meets the heat-dissipation requirements, which can reduce more than 80% of model selection risk.