Setra Blog

Converting mA to voltage is common in HVAC when working with pressure transducers. Terminology to keep in mind includes:

• 1 mA = 0.001 AMP (short for amperes)
• Amps are referred to asCURRENT
• Resistor values are inOHMS(Ω is the symbol for ohms)
• VOLTAGEis the result of passing amps through a resistor

Tank level can be measured in a variety of ways, and each method has its advantages and drawbacks. One of the most common methods for tank level measurements is the hydrostatic method. Hydrostatic pressure is a cost-effective way to measure tank level that doesn’t rely on the measurement being taken directly at the tank, unlike many other methods.

The hydrostatic method uses simple physics to measure tank level. The hydrostatic pressure of a liquid is equal to the height of the liquid above the location of the pressure measurement. The table below demonstrates how certain pressure ranges equal the accuracy of the height measurement.

I²C stands for an integer-integrated circuit. This is a commonly used communication protocol that is flexible enough to be used for a wide variety of applications. Specifically, I²C is a serial communication method with bi-directional two-wire communication. Anysensorsand secondary devices only communicate when asked to by the primary.

数据中心遍布世界各地，无论它们是专用的建筑物还是建筑物的一部分，每个中心都装有计算机服务器。仅在美国就有大约300万个数据中心。在这300万个数据中心中，大约有3000个是大型数据中心，而其余的是较小的企业服务器室。

Pressure transducers all have some degree of variation in output caused by changes in temperature. The best way tocompensatefor such variation is to employ components on the PCBA that respond to temperature. These components can be fixed in value, adjustable like a potentiometer, or feed into a digital circuit.

A variety of pressure sensor designs are available today. Two of the most common sensor types are MEMS and capacitive sensors.

For referring to variable capacitive sensing technologies, four specific terms are commonly used: pressure transmitters, transducers, sensors, and switches.Capacitanceis the detection and measurement of pressure by the change in voltage across a capacitor. The capacitance of sensing technology can be fixed or adjustable and varies dependent on the application.Capacitive sensing technologyis highly precise, boasting accuracies of up to ± 0.07% of full scale. This pressure sensing technology is used for applications where a high degree of accuracy is crucial, such as engine test stands and pressure decay leak detection.

当温度波动影响传感器效率时，采用热补偿的方法来补偿传感器的性能。用于精密测试和测量应用的传感器，如在发动机试验台，进行热补偿。Manytransducersused in other critical applications may be thermally compensated. Thermally compensating sensors is crucial as temperature can have a significant impact on performance if not accounted for. This step in manufacturing counteracts the effects from changes in temperature that can influence the accuracy of a transducer's output. Thermal influence the accuracy of a transducer's output. Thermal compensation helps reduce the impact of temperature changes on sensitive components.

当今世界的许多公司都在努力帮助支持呼吸机制造的迫切需求。对于这种应用，Setra的两个最小的压力传感器可以用于oem，我们的型号210和263。

In HVAC and refrigeration, pressure sensors monitor pressure changes to indicate when issues arise. Drops in pressure can alert technicians of needed maintenance or larger problems. Within the variety ofHVACapplications are also numerous available sensors for every environment. For example, industrial pressure sensors can be used to measure the pressure of fluorocarbon refrigerants, the pressure of chilled water in chiller systems, or the pressure of refrigerant in a refrigeration system.