Whether it is a hydraulic pressure measurement control circuit that provides feedback for the pump pressure of the HVAC system, or the pressure of the coolant flow, the heavy-duty sensor can output a high-level signal. Currently, design engineers are faced with the huge challenge of designing more complex control systems. These systems rely on providing more feedback signals than previous systems. Therefore, design engineers must consider components that meet the requirements of high accuracy, lower overall cost, and ease of implementation. Current control systems mostly use pressure switches to control. This type of switch opens and closes around a set point, and its output is usually reviewed at the end of the day. This type of system is mainly used for monitoring. Compared with the above-mentioned control system, the system using the pressure sensor can measure the pressure spike in time and accurately, so as to issue a warning before the danger occurs or the control system fails. The sensor can be connected to the computer to measure the actual pressure, so that the user can accurately monitor and control the system. Pressure data is generally used to dynamically measure system performance, monitor usage status, and ensure system energy efficiency. A system using sensors can provide more and more effective data points.
In short, a heavy-duty pressure sensor is a pressure measuring device with a housing, a metal pressure interface and a high-level signal output. Many sensors are equipped with round metal or plastic housings with a cylindrical appearance, with a pressure port at one end and a cable or connector at the other end. This type of heavy-duty pressure sensor is often used in extreme temperature and electromagnetic interference environments. Customers in the industrial and transportation sectors use pressure sensors in their control systems to measure and monitor the pressure of fluids such as coolants or lubricants. At the same time, it can also detect pressure spike feedback in time, find problems such as system blockage, and find solutions immediately.
Control systems are becoming smarter and more complex, and sensor technology must also keep pace with development to meet application requirements. Gone are the sensor eras that required signal conditioning and calibration. When the sensor is designed, implemented, and applied, you no longer need to worry about the function of the sensor. In view of the fact that the sensor is a very important pressure measurement device, and there are many types of sensors on the market and the quality is uneven, you must choose carefully.
Overview of possible solutions
Before making a sensor purchase list, it is important to review various application scenarios. Need to consider what are the alternatives, and how to meet the requirements and specifications of their own design. As mentioned earlier, in the past few decades, the control and monitoring system has undergone tremendous changes mainly due to the increase in design complexity. These changes include manual systems becoming electronic technology-based control systems, multiple components becoming highly integrated products, and more attention to cost issues. There are multiple solutions for overloaded applications. What are the overloaded environments? Here are only some specific examples, such as environments with a large temperature range (such as -40 °C to 125 °C [-40 °F to 257 °F]), including refrigerants, engine oils, brake fluids, hydraulic oils, etc. Harsh media and environments where compressed air is used. Although the above temperature ranges and harsh environments may not be the most extreme environments, they represent most of the transportation and industrial environment applications.
Heavy-duty pressure sensors can be used in the following areas:
It is used in HVAC/refrigeration and air conditioning applications to monitor system performance and control compressor inlet and outlet pressures, roof chillers, refrigeration rooms, refrigerant recovery systems, and compressor oil pressure.
Used for air compressors to monitor compressor performance and efficiency, including monitoring compressor inlet and outlet pressure, filter pressure drop, cooling water inlet and outlet pressure, and compressor oil pressure.
For transportation applications, it maintains heavy-duty equipment by monitoring the pressure, hydraulic power, flow and liquid level of key systems such as pneumatics, light-load hydraulics, brake pressure, oil pressure, transmissions, and truck/trailer air brakes performance.
There are many types of sensors on the market and the quality varies, so it is necessary to carefully study alternative products. Specifically, the product should be analyzed in terms of reliability, calibration, zero compensation, sensitivity, and total error range.
Selection criteria
As with most electronic products, sensor selection criteria reflect important design challenges. The system design requires stable sensors to ensure that the system can work normally at any time and place. The consistency of the system is also important. A sensor taken out of the packaging box must be interchangeable with any other sensor in the box, and the product performance must be the same as the predetermined performance. The third criterion to consider is cost, which is a ubiquitous challenge. Due to the increasing intelligence and accuracy of electronic equipment, the old components in the solution have to be updated. The cost depends not only on a single sensor, but on the entire cost of product replacement. What products does the sensor replace? Do you need to perform pre-calibration or full compensation before replacement?
When selecting sensors for industrial or transportation applications, consider the following factors:
Configurability
When using each type of sensor, should you consider whether the device is a standardized or customized product? Custom options include connectors, pressure ports, reference pressure type, range, and output form. Whether it is a stock product or a configuration product, can the selected product easily meet the precise design requirements and can be supplied quickly? When you design a product, can you get samples quickly so that the time to market for the product is not delayed or affected?