Our line of pressure sensors and digital pressure gauges are perfectly suited for use in line pressure, hydraulic pressure, display applications, calibration, testing and laboratory work. Many of our pressure transducers are also used for level measurements in tanks. Organizations like the US Navy, Air Force, contractors, and manufacturers everywhere use our pressure sensors and gauges.
One contractor that builds precision lift hydraulic equipment uses our pressure sensors and displays to control a particularly sensitive operation. They specialize in controlling large lifts of very sensitive and highly valuable loads for precise placement.
Hospital maintenance technicians use our PG5 digital pressure gauge to calibrate infusion pumps, a life saving function. Hospitals all over North America trust APG and our PG5 to keep their equipment calibrated.
With accuracy up to 0.1%, NIST certification, and over 20 years in the industry, APG is a reliable source for high quality instrumentation.
Take a moment to browse through our line of pressure sensors, gauges and transducers. Specific examples of uses can be found on our application notes page.
Pressure 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:
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The Peak Hold function on a digital pressure gauge, such as the PG7, allows the gauge to continue displaying the “peak” or maximum pressure reading from the time the gauge was powered or since the peak hold function was reset.
This is very useful function in detecting the stresses, burst or destruction pressures during Quality testing of product components and materials in such industries as aerospace and automotive.
When the Peak-Hold feature of the PG7 digital pressure gauge is enabled, a small box containing the words PEAK HOLD will be displayed in the upper left corner of the display.
Enabling the Peak-Hold feature of the PG7 digital pressure gauge requires the following steps.
Step 1...
When hammering on a wing union fitting, it is not uncommon for there to be a “slight miscalculation” in the swing. When this unfortunate event takes place, fate ensures that some expensive equipment is nearby waiting to take the blow. All too often the stray hammer smashes into the connector on a hammer union pressure transducer, which causes breaks in the wiring and leads to an inoperable pressure sensor.
Over the past few years we have been approached by some of our customers asking for a solution to this problem.
Quite often, we have run into the assumption that by opting for a potted-in cable instead of a connector, you will reduce the chances of broken contacts from a poorly judged hammer swing. This...
Over the last few years, our hammer union pressure transducers have proven themselves in the field - making believers out of some of the worlds top oil well service companies. This video explains how we developed such a popular oilfield pressure sensor. Enjoy!
Video Transcript
Narrator: A few years ago, we noticed that some of our customers in the Oil...
When the displayed full scale pressure reading on your gauge does not match exactly the actual full scale line pressure, you need a PG7 digital pressure gauge from APG. The variance can be detrimental to the any machinery or processes that use pressurized tanks and lines.
Instead of sending the gauge out for calibration (ugh!), PG7 digital pressure gauges have a function that allows the user to adjust the factory full scale pressure back to an accurate full scale reading.
This reading can be adjusted +/- 5%. So, if your full scale range is 1000 psi, you can adjust the reading up or down 50 psi. Once the PG7 can no longer stay within 5% of the true reading, then you'll need to send it back in for calibration...
When selecting pressure transducers for your application, you will need to decide what pressure type your sensor will have. You must choose wisely as this will have a direct effect on the accuracy and durability of your sensor.
First, let’s do a quick review of the pressure types available for pressure transducers.
Gage Pressure
This type is used most often. When manufactured, the sensor’s reference point is set to ambient pressure. This way, it is unaffected by barometric changes because it is vented.
Vacuum Pressure
Just like gage pressure, vacuum...
Pressure transducers are put into odd places that are often hard to reach. So when you simply want a pressure measurement on a display, the best approach is to connect directly to a digital display. Rather than buying a separate display and messing around with wiring, you can purchase your pressure transducers and displays together – literally.
When pressure transmitters are tethered directly to a display, the connection is handled in the factory. You can choose between a hard-wired solution and a connector. This still gives you the flexibility to choose the length and routing of your cable, but speeds up installation.
One of the main benefits to a tethered pressure transducer and display is the cost...
One way to measure pounds of force, such as in a hydraulic press system, is to use a digital pressure gauge with a custom multiplier feature. So before you get started, make sure you have a gauge that is equipped with this feature.
Let’s say you are using a metal stamping machine and you want to measure the pounds of force being exerted by a ram with a diameter of 5 inches. The gauge you have tapped into the hydraulic lines has a range of 1000 psi.
Calculate the Surface Area
The first step to determine the multiplier is to calculate the area of the ram. The formula for this is area equals pi by the radius squared (A = πr²). So we multiply π by 6.25 inches (radius of 2.5...
To quote Larry Bachus, the pump guy, “Every day there are mechanics and operators standing next to pumps without gauges. The operator has absolutely no idea if the pump is healthy or sick. Before long, the pump becomes a high maintenance item.” Why is it that so many pumps go without proper monitoring?
Why Pumps Need Pressure Gauges
A set of digital pressure gauges will tell if a pump is healthy or sick. How? The gauges will show you the pressure differential between the suction nozzle and the discharge. That differential should match the PSI for which the pump was designed.
For example, if the pump was designed for 80 ft. of head, it should be outputting 34.6 PSI (80 ft./2.31=34.6 PSI) above the suction pressure. So if the digital gauge at the suction nozzle reads...
At the beginning of this year we introduced to you the Tank Cloud MND (short for Modbus Network Display). To review, this display unit connects to a Modbus network to provide local tank level readings. You can program it as a sniffer – displaying readings by “eavesdropping on the conversation” between the slave units and the master – or you can use it as the master and poll the slaves sensors on the Tank Cloud network.
Today we would like to tell you a little more about the MND as a master.
Using the MND as a master is ideal for situations where you do not require remote monitoring and no other master is present, such as a PLC. Unlike the LOE ultrasonic sensor or the RST module, the MND is for local display applications only and cannot transmit a signal over the Internet.
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