Explanations for queries related to sensors and instrumentation used for measuring pressure with an absolute zero vacuum reference.
Why is it called "absolute" pressure?
It refers to the fact that the reference is fixed at the lowest possible pressure, a perfect vacuum, so that the pressure reading is always compared to an unconditional and static reference.
How do you convert a gauge pressure to an absolute one?
If you know the local ambient air pressure, the absolute pressure can be determined by adding it to the gauge pressure, i.e. P (abs) = P (atm) + P (gauge).
What are Flush Diaphragms and where are they used?
There are certain media which cannot be used with conventional pressure sensors due to it being either too viscous or requiring a high level of cleanliness.
In some test and research applications a sensor that changes the volume or shape of the vessel / pipe will lead to additional measurement uncertainties.
In some test and research applications a sensor that changes the volume or shape of the vessel / pipe will lead to additional measurement uncertainties.
Differential Pressure Sensor Frequently Asked Questions
A list of queries and explanations relating to the selection of specification parameters for differential pressure transducers and transmitters.
What is the Maximum Line Pressure?
This is the highest pressure that can be applied to both pressure connectors at the same time. If a differential pressure exists between two pressure connections, the total pressure on the high/positive side would be considered for the purposes of assessing line pressure. The line pressure is an indicator of the mechanical integrity of all materials, welds and seals used in the construction of the transmitter.
What is the Maximum Line Pressure?
This is the highest pressure that can be applied to both pressure connectors at the same time. If a differential pressure exists between two pressure connections, the total pressure on the high/positive side would be considered for the purposes of assessing line pressure. The line pressure is an indicator of the mechanical integrity of all materials, welds and seals used in the construction of the transmitter.
Measuring the Pressure of Hot Media
Installing pressure sensors close to high temperatures can lead to significant measurement errors and irreparable damage to the sensing elements and electronics.
The cheapest and simplest approach to protect a pressure sensor is to isolate it from the heat source. This can be done by extending the process connection with a short length of pipe and mounting the pressure sensor on the end instead.
The cheapest and simplest approach to protect a pressure sensor is to isolate it from the heat source. This can be done by extending the process connection with a short length of pipe and mounting the pressure sensor on the end instead.
Advantages of Stainless Steel Pressure Sensors
There are many types of materials used for constructing pressure sensors in a variety of applications, but those made from stainless steel are considered the most reliable and durable.
High Tensile strength
In hydraulic applications where pressure overloads are commonplace a stainless steel pressure sensor can withstand a high number of pressure cycles without fatigue damage.
High Tensile strength
In hydraulic applications where pressure overloads are commonplace a stainless steel pressure sensor can withstand a high number of pressure cycles without fatigue damage.
Are all IP68 Water Resistant Protection Ratings the same
It is often assumed that devices with an IP68 rating are suitable for immersing underwater for an indefinite period and any depth.
Not all devices that are IP68 are intended to be continuously submerged, some only require a temporary rating to protect from occasional submersion.
Not all devices that are IP68 are intended to be continuously submerged, some only require a temporary rating to protect from occasional submersion.
Subscribe to:
Posts (Atom)