Blog posts of '2018' 'September'

Steady pressure flow plays a vital role in many different manufacturing applications. When accuracy and stability are a must, we find it beneficial for manufacturers to look into using OEM Pressure Transmitters.

State-of-the-Art Technology
When choosing a compact OEM pressure transmitters, you can expect to see many benefits. In fact, the design of its parts feature proven sputtered thin film technology to optimize precision. You can also enjoy the Psibar CVD, capacitance, and MMS-type pressure sensors that come standard as process and level controls. Best of all, some offer dual pressure and temperature sensing options, if needed.

Durable Parts 
With durable materials, the pressure transmitters can handle high-volume use on the toughest jobs. From stainless steel wetted materials to piezoresistive ceramic sensors, there are so many great options when choosing the right transmitter for your application. Depending on your need and preference, here's a list of the OEM transducers we offer at Big Bear Instruments.

Vast Product Offering
If you aren’t sure whether or not these parts will work for your application, you’ll be happy to know that we offer a wide variety of different connectors, colors, styles, and cable options. You can discuss your options with one of our experts to determine which version best fits your use. The following are just a few of the ways in which you can customize the parts for your manufacturing facility:

• Red, black, white, and green wires
• 1-5 meters cables
• 0-1600 bar pressure range
• External threads and more
• Various pressure ports

Regardless of which parts you choose for your application's needs, we're here to make sure you get the best product for your application. Contact us today. We'd love to hear from you!

Although a virtually straightforward task, selecting an Isolator—specifically a 4-20mA Isolator— involves more than simply comparing the number of channels and the cost per point. Signal isolators receive 4-20mA process current inputs and provide an isolated 4-20mA output signal. On multi-channel units, each channel operates independently and is isolated from the others to prevent interaction between channels. Galvanic isolation eliminates ground loops, reduces, noise, and blocks transient signals.

We have outlined a few concepts to help you specify a 4-20mA Isolator:

• A two-wire system using output loop powered devices is a low cost approach. The I/O modules in this system use power from the output loop to operate and control the 4-10mA loop to the load. This is characterized as a sinking output because the module requires an external power source.
• Without a power source, a 4-10mA Isolator that powers the output loop is required. This type of Isolator is characterized as having a sourcing output. If the I/O module can take power from the input loop to operate and power the 4-10mA output loop to the load, a two-wire system using input loop powered devices is a low-cost approach. Otherwise, a four-wire device must be used.
• To determine if the I/O modules are correctly matched to an application, the voltage level to the external power source must be determined, along with the total input impedance of all loads, and whether other peripheral devices are connected to the input loops.

If you could use some help deciding which 4-20mA isolator is right for you,  contact us. We offer more than 100 modules that interface with a vast array of voltage, current, and strain measuring devices, and they are designed to integrate seamlessly into your existing process.