When to Use Heavy vs. Light Duty Pressure Transducers

Pressure transducers vary in designPressure transducers come in all shapes and sizes, and some are simply tougher than others. For example, our PT-400 is built for harsher applications than our PT-L1, and therefore costs a little more. So to avoid making the mistake of either spending too much on something you don’t need, or spending too little on something that doesn’t work, be sure to select the right sensor for the right job.

So when is it appropriate to use heavy duty pressure transducers vs. their light duty counterparts? Below is a basic list of factors to look for in your application that will help you make this decision:

Pressure Range

The higher the pressure range the more durable the sensor you will need. Typically, once you are experiencing pressure spikes exceeding 5,000 PSI you will be better off using heavy duty pressure transducers.

Proper Pressure Sensors Diaphragm Handling and Care

Avoid touching a pressure sensor's diaphragmPressure sensor diaphragms come in a variety of sizes and materials. And they’re attached to a variety of sensing elements and technologies. These variables all affect how sensitive a pressure transducer is to damage to the diaphragm.

It is somewhat common for piezoresistive pressure sensors to be mishandled and damaged. That is because the sensor diaphragm is quite thin, and is the most vulnerable part of the sensor. It must remain free of dents, scratches, punctures, and any other damage to work as designed and as expected.

What’s the difference between temperature range specifications on a pressure sensor?

There are three temperature specification ranges on a pressure transducer...There are three different temperature ranges that you should understand when selecting a pressure transmitter:

Temperature Compensation Range

Operational Temperature Range

Storage Temperature Range

Each explains how the sensor will perform under different temperatures.

Pressure Transducers & Water Hammer

Water hammer can flex a transducer diaphragm too muchWater utilities have to be cautious with a phenomenon known as water hammer. This happens when a fluid (or gas) is stopped or redirected suddenly, such as when a pump turns off without first ramping down. Like a train wreck, the fluid in motion crashes against the pipe or valve and sends shockwaves back through the system.

An everyday example of water hammer often wakes people up at night. When a household appliance automatically shuts off water, you will often hear pipes banging or shuttering. This is a direct result of water hammer. It may seem innocent enough at home, but in industrial settings it can get out of hand.

6 Common Variables Affecting Pressure Sensors

There are multiple variables to consider when choosing a pressure sensorDealing with different variables, whether physical or environmental, is a normal part of any pressure instrumentation application.

Decisions must be made regarding protection from outside environmental elements such as water, dust, extreme heat or cold. Questions must be answered concerning applications such as corrosive environments, areas of excessive vibration, as well as hazardous locations.

Though the list of different variables can be long and lengthy,...

Application Challenge: Dealing with Temperature Changes

Temperature swings can affect pressure transducer accuracyPressure sensors and digital pressure gauges are often subject to large fluctuations in temperature which can lead to decreased accuracy. In applications where maintaining high standards of accuracy is a must, this effect can lead to major issues.

Choosing the Right Pressure Sensor

Elden Tolman, an APG engineer, explains that there is virtually nothing that can be done to correct this problem in the field. Your best defense is to choose the right sensor. Therefore, your...

Pressure Sensor Fittings: Straight Thread vs Tapered

High pressure process connectionWhen choosing a thread style to mount your pressure transducer or digital pressure gauge, the choices fall between tapered thread (e.g., NPT or BSP) or straight thread (e.g., UNF or SAE).

Tapered

Tapered threads form a seal by themselves. When tightening the threads to the proper torque, the threads tighten against each other and form a seal.  Often, Teflon® tape or liquid paste...

Level Measurement with Pressure Transducers: Sealed Tanks

Pressure transducers have always been popular for level measurement in tanks. They are typically low-cost compared to alternatives, and this is a powerful driver even when competing with more purpose-built technology. In addition, installation is usually quite easy. However, some tanks are more difficult than others.

Sealed tanks tend to be a bit more difficult than most. If you want to use a pressure transmitter, you’ll need to install two. Let’s get into the details:

A sealed tank behaves differently as it is filled. Because the air in the tank is trapped, it is compressed as liquid fills the cavity. In fact, both the air and the liquid become compressed as they are forced to share space.

When to use Pressure Sensors for Level Measurement

The PT-500 submersible level sensor is a hydrostatic pressure transducer

Your Guide to Level Measurement with Pressure Sensors

Inexpensive, simple, easy, effective, and stable are words not often used correctly in the same breath. However, when it comes to measuring liquid levels with pressure sensors, we can say all of that with confidence.

Pressure transducers measure level by detecting the pressure exerted by a certain volume of liquid at the bottom of the tank or well. This is then converted to a level based on a few factors including: tank type and size, and the specific gravity of the liquid.