Maintenance and Servicing of the Three-Rotor System

　　As the weather grows colder and ambient temperatures rise, phenomena like freezing, solidification, and crystallization may occur. Meanwhile, the seismic pressure gauge, operating in excessively low environmental temperatures, has moved outside its normal working temperature range—directly compromising the accuracy of the three-rotor display. So, let’s now explore how to properly maintain and care for the three-rotor system.

　　The three-rotor measurement pipelines have been treated for frost protection. The primary objects requiring thermal insulation are transmitters installed inside instrument insulation boxes, externally mounted float-type level transmitters, and other types of level-changing units, as well as sensing and measurement lines for instruments such as pressure, differential pressure, and flow meters—especially those installed in open-air environments. Such incidents are prevented through proper equipment selection or other appropriate measures.

　　Three-rotor maintenance and servicing:

　　I. Selection Criteria

　　Select instruments equipped with insulation devices. For differential pressure transmitters, specify the insulation and freeze-protection requirements based on the instrument’s intended application and the anticipated installation location, then submit these details to the manufacturer for processing.

　　In the north, the temperature difference between day and night is extreme—some areas experience nighttime temperatures as low as -20°C or lower. After careful selection of solutions, however, the cost-effectiveness turns out to be quite high, making it an impractical choice. On the other hand, opting for insulation, heat exchange systems, and regular maintenance practices (such as inspections and anti-pollution measures) remains a viable and effective solution for preventing freezing.

　　2. Insulation Measures

　　Insulate with thermal insulation materials. Specifically, wrap both the parts of the instrument that are prone to freezing and those less likely to freeze with insulation material. As winter approaches, make sure to inspect regularly, drain contaminants frequently, and prevent damage to the insulation packaging.

　　3. Heat Protection

　　1. Steam Heat Protection

　　In other words, use steam for heating and insulation. Before delivering insulated steam during winter, make sure the steam insulation lines are clear and free of blockages. Ideally, steam should flow continuously for 24 hours—just don’t let it get too hot. Additionally, you can adjust the amount of insulated steam supplied based on outdoor temperature changes, preventing issues like condensate vaporizing inside the transmitter’s pressure tubing due to excessive heat, which could disrupt transmitter operation, or condensate freezing in the tubing at excessively low temperatures, potentially impairing transmitter performance as well.

　　2. Thermal Insulation and Protection Box Measures

　　a. The insulated box equipped with electric heating tubes consists of three main components: the box body, the heater, and the instrument bracket. Its structural design is identical to that of a protective box, but it features an internal electric heating system. The electric heating unit includes heating tubes and a temperature controller. A power socket is installed on the side of the box; once connected to the power supply, the interior heats up to the desired temperature. At that point, the temperature controller keeps the system energized, allowing further heating until the target temperature is reached. This cyclical operation ensures that the temperature inside the box remains stable within a specific range.

　　b. Add an extra layer of insulation cotton to the critical instrument box, and seal the inlet and outlet of the insulated box with rubber—this will effectively keep the instrument system warm and prevent freezing.

　　c. The steam pipe thermal insulation box and the trace heating pipes feature an S-shaped structure made of metal tubing. The upper and lower sections of the box are joined to the trace heating pipes using welded plate-type connectors, while the trace heating pipes themselves are installed vertically inside the box. Steam circulates through the pipe cavities to achieve efficient heating.

　　The above is an introduction to the maintenance and upkeep of the three-rotor system. If you'd like to learn more, feel free to reach out to us anytime! Our company boasts years of experience and looks forward to having you join us.