HVAC Capillary Pressure Gauge Manufacturers

Effect of ambient temperature on the accuracy of HVAC capillary pressure gauge and countermeasures

In the field of HVAC (heating, ventilation and air conditioning), capillary pressure gauges are important measuring tools, and their accuracy is affected by many factors, among which the change of ambient temperature is particularly significant.
Effect of ambient temperature on the accuracy of pressure gauges
Material thermal expansion and contraction phenomenon
As the core sensing element of the pressure gauge, the capillary tube undergoes the physical phenomenon of thermal expansion and contraction when the temperature changes. This change causes a slight change in the length and inner diameter of the capillary tube, which directly affects the accuracy of pressure measurement. This effect is particularly obvious under extreme temperature conditions, which may lead to a significant increase in measurement errors.
Changes in the performance of elastic elements
The elastic modulus and stiffness of the elastic elements inside the pressure gauge, such as the Bourdon tube and the diaphragm box, change with temperature. This performance fluctuation makes the deformation of the elastic element show different characteristics under the same pressure, which in turn affects the reading stability and accuracy of the pressure gauge.
Changes in the clearance of movement components
Temperature changes can also cause changes in the clearance between the movement components of the pressure gauge. This change may increase or decrease the friction resistance between the movement components, which in turn affects the accuracy and stability of the movement conversion mechanism. The accuracy of the movement is crucial to the overall performance of the pressure gauge, so the impact of temperature on it must be considered in the design.
Jiaerling's Countermeasures
In order to improve the measurement accuracy of the capillary pressure gauge at different ambient temperatures, Jiaerling has taken a series of innovative countermeasures.
Selecting high-quality materials
Jiaerling is committed to selecting materials with excellent thermal stability and corrosion resistance to manufacture capillaries and elastic elements. These materials can maintain stable physical properties over a wide temperature range, thereby significantly reducing the impact of temperature changes on the accuracy of the pressure gauge.
Using temperature compensation technology
In order to further improve the measurement accuracy of the pressure gauge, Jiaerling incorporates advanced temperature compensation technology into the design. By integrating a temperature sensor inside the pressure gauge, the changes in ambient temperature are monitored in real time, and the pressure measurement value is dynamically corrected using advanced algorithms, thereby effectively compensating for errors caused by temperature changes.
Optimize the movement structure design
Jiaerling has carried out in-depth optimization design of the movement structure, using precise mechanical structure and advanced processing technology to ensure that the clearance between the movement components can remain stable when the temperature changes. In addition, by optimizing the gear ratio and reducing friction resistance, the accuracy and stability of the movement conversion mechanism are further improved.

What are the maintenance measures for HVAC capillary pressure gauge?

In industrial applications, capillary pressure gauges are important tools for ensuring production safety and monitoring the environment. In order to ensure its long-term stable performance, users must perform regular maintenance and maintenance.
Regular calibration and verification
The accuracy of capillary pressure gauges will be affected by time and environmental changes, which may cause reading deviations. Therefore, regular calibration and verification are key steps to ensure its accuracy. According to industry standards and Jiaerling's product characteristics, users are recommended to calibrate every six months to one year. For those pressure gauges that play an important role in production safety and environmental monitoring, the verification cycle should be appropriately shortened, and it is recommended to be performed every three months.
Keep clean and dry
Capillary pressure gauges are susceptible to dust, oil and other pollutants during use, which not only affects its appearance, but may also cause wear of internal movement components, thereby affecting measurement accuracy. Therefore, users should regularly clean the casing of the pressure gauge with a soft cloth to remove surface pollutants. At the same time, the storage environment should be kept dry and ventilated to avoid moisture and high temperature from causing adverse effects on the equipment. Appropriate environmental conditions will help extend the service life of the pressure gauge.
Check and replace the seal ring regularly
The integrity of the seal ring is crucial to the accuracy and reliability of the capillary pressure gauge. Aging, deformation or damage of the seal ring may cause pressure leakage, thereby affecting the measurement results. Therefore, it is recommended that users check the status of the seal ring regularly, and if aging, deformation or damage is found, it should be replaced in time. Jiaerling provides original seal ring replacement service to ensure that the user's pressure gauge always has good sealing performance to ensure the accuracy of measurement.
Avoid excessive pressure and shock
Capillary pressure gauges are designed with a specific pressure range and impact resistance. However, long-term exposure to pressure beyond the design range or impact may cause damage to internal parts, thereby affecting measurement accuracy. Therefore, users should avoid subjecting the pressure gauge to excessive pressure or external impact during use. In case of abnormal conditions, stop using it immediately and contact Jiaerling for professional maintenance in time to ensure the safety and reliability of the equipment.
Establish maintenance records
In order to ensure the long-term stable operation of the capillary pressure gauge, it is recommended that users establish detailed maintenance records. These records should include the date, content and results of each maintenance. Through systematic records, users can not only discover potential problems in time and take corresponding measures, but also provide important references for subsequent maintenance.