Over the years, pressure transducers have established themselves as a practical, precise, and dependable method for measuring fluid pressure across various applications, ranging from HVAC/R compressors and variable speed pumps to industrial pipelines, among others. Unlike in the past, today’s market offers a plethora of pressure sensor models equipped with advanced features like improved heat dissipation, reduced creep and hysteresis effects, and more, designed to operate efficiently even in the harshest environments where exposure to corrosive media is common. With so many options available, selecting the right pressure transmitter for your specific application and installation location can be challenging. Although there are no strict guidelines to follow when choosing pressure transmitters, there are certain parameters that can guide you toward making an informed decision.
This post, divided into two parts, aims to provide insights into the key factors you should consider when selecting pressure transmitters for your applications. Getting the correct pressure transducer is vital to meeting your operational needs. Several factors, such as long-term stability, insensitivity to vibration, adaptability, repeatability, custom calibration availability, and energy efficiency, must be thoroughly evaluated before selecting a model. Beyond these, there are additional considerations that can help you make a more informed purchase.
Firstly, when purchasing pressure transmitters, it is essential to understand the pressure range your device will handle. Key questions to ask include:
- What is the pressure range the transducer will measure?
- What is the maximum pressure the transducer will encounter?
- What is the potential for overpressure in the system?
- What is the proof pressure?
- What is the burst pressure?
Additionally, the construction of the pressure transmitter plays a crucial role in ensuring reliability and performance in demanding conditions. These devices are often subjected to corrosive media and harsh environments. Therefore, it is important to choose sensors constructed from durable materials capable of withstanding corrosion and other atmospheric challenges. Opting for sensors with all-welded designs and IP-rated enclosures is generally recommended.
Another critical aspect is media and material compatibility. During their service life, pressure sensors may interact with various types of media, so it's essential to verify the compatibility of the selected model. Ensure that the model you choose can handle substances like motor oil, brake fluid, refrigerants, hydraulic fluids, seawater, wastewater, tap water, oxygen, compressed air, and nitrogen for extended periods. Additionally, confirm that the sensor components, including the diaphragm, fittings, and welds, are made from materials that can resist aggressive media such as ammonia, ionized water, saltwater, hydrogen, acids, and jet fuel.
When selecting a pressure transmitter, it’s also important to consider the operating environment. These devices are installed under varying environmental conditions. Ensure that the chosen model is designed to withstand factors such as extreme temperatures and humidity levels. If your application involves severe environmental conditions, discuss your ingress protection requirements with the manufacturer. Similarly, shock and vibration protection should be considered when selecting transmitters for applications in vehicles like locomotives or fire trucks.
Other factors to keep in mind include checking the electrical and mechanical connections before choosing a pressure transducer. For highly corrosive environments, opt for models with pressure fittings made from stainless steel. Additionally, evaluate the sensing technology and circuit design, measurement limits, repeatability, system accuracy, regulatory considerations, power consumption, possibilities for modification or customization, and handling and installation procedures.
Accurate pressure measurement is vital in nearly all industrial automation and process environments. By considering the aforementioned points, you can ensure that your choice of pressure transmitter helps achieve the desired precision. Avoid selecting an inappropriate transmitter that could negatively impact your equipment or lead to inaccurate readings. To make an informed decision, compare the available models at the supplier’s facility and engage in discussions with the supplier to identify the best option for your needs.
Partnering with trusted suppliers is always advisable since they maintain extensive inventories of various models and offer only reputable brands. This post concludes by introducing Transmitter Shop, which holds the world’s largest inventory of ready-to-ship transmitters and accessories. With years of experience, this company collaborates with its clients to provide the optimal model after fully understanding their application requirements.
Related Product Table of Pressure Transmitters
| Model List | Measurement Type | Brand | Process Connection Type | RFQ |
| 3051T | Gauge and Absolute Pressure | Rosemount | Inline Pressure Transmitter | |
| 3051C | Gauge, Differential and Absolute Pressure | Rosemount | Coplanar Pressure Transmitter | |
| 3051S | Gauge, Differential and Absolute Pressure | Rosemount | Coplanar Pressure Transmitter | |
| 3051ST | Gauge and Absolute Pressure | Rosemount | Inline Pressure Transmitter | |
| 2088 | Gauge and Absolute Pressure | Rosemount | Inline Pressure Transmitter | |
| 2051T | Gauge and Absolute Pressure | Rosemount | Inline Pressure Transmitter |
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