Temperature can be measured with a variety of methods. Glass thermometers, resistance temperature devices (RTDs), bimetal instruments, gas expansion (gas-actuated) thermometers and infrared radiation, to name a few. Each offers a unique set of advantages for specific applications. Another extremely common temperature measurement device is the thermocouple. Its simple design makes it remarkably versatile, reliable and cost-effective. But how does a thermocouple work? This article will describe the function of thermocouples, the different types and their material composition.

Liquefied gases, such as nitrogen, oxygen and helium, are used in many cryogenic applications. To measure pressure in these situations, your pressure instruments must be able to stand up to very low temperatures. So, how can you effectively measure process pressure when your pressure gauge is not rated for such a low cryogenic temperature? In this article, I will discuss cryogenic applications, and the different mounting options and accessories available that can help protect your pressure instruments from the effects of very low temperatures.

If your application can experience overpressure, your pressure gauge needs to withstand those negative effects. Pressure line spikes and “water hammer” may introduce pressure beyond the operating range of the instrument and cause damage. How can you protect your pressure gauge from the impacts of overpressure? This article will discuss some of the options available for overpressure protection to keep your application running, even in harsh environments.

Protect your pressure gauge from the effects of overpressure with Ashcroft’s new option XRA for the 1209 pressure gauge. This 4 ½-in. stainless steel, solid front pressure gauge now offers option XRA to accommodate up to 417% overpressure without damaging the gauge. In applications where pressure spikes, surges and water hammer are a possibility, option XRA reduces the need for an external pressure limiting valve while extending gauge capacity. The 1209 is also available with optional liquid fill or the patented PLUS!™ Performance option to dampen shock, vibration and pulsation. This review will look at the new option for this pressure gauge and how it can provide reliable pressure measurements for your high-pressure application.

Applications at ammonia plants can be corrosive and damaging to your equipment. The pressure instruments you use must be able to stand up to the harsh environment of ammonia applications, or you may face equipment damage, operator injury or downtime for your process. So, what pressure gauges and accessories are the best choices for use in ammonia plant applications? This article will discuss some of the factors you should consider when selecting pressure instrumentation for ammonia to help you find the best solution for your process.

If your application is impacted by a wide temperature range or harsh vibration, you need temperature-measuring equipment that can withstand the extreme environment. You must also be able to read the temperature safely away from dangerous conditions. Otherwise, you may risk equipment damage, which can lead to downtime for your business. So, what temperature instrument is best for these situations? This article will discuss gas-actuated thermometers, when to use them and the advantages they can offer your application.