3D Test/Process Gauges

Literature

The Series 25 Accu-Drive pressure gauges incorporate the 3D Instruments signature "Direct Drive Difference" Inconel helical bourdon tube system. The "Direct Drive Technology" concept couples the bourdon tube directly to the shaft-pointer, thereby streamlining the design and reducing the number of moving parts from approximately twelve down to one!! Thirty years of industrial application have proven that this design is vastly superior to the C-bourdon tube/movement system incorporated in the traditional pressure gauges...specially for vibration and pulsation!!  Very long life span with a 6 year warranty.  Wide ranges of application and measurement.  

Advantages of Direct Drive Technology
Thirty years of industrial application have proven that our Direct Drive design is vastly superior to the C-bourdon tube/movement system incorporated in traditional pressure gauges, especially for applications that experience high vibration and/or pulsation.

Liquid-Free Cases for Improved Performance
In many severe service applications, C-bourdon pressure gauges are filled with silicone to both dampen needle movement as well as lubricate their metal movements to extend service life. Besides adding additional cost to the price of the pressure gauge, this filler liquid causes other operational difficulties such as dial discoloration and a potential shift of calibration.

Series 25 pressure gauges’ “direct drive difference” technology applies silicone dampener directly to the bourdon tube. This “coil dampening” approach isolates the pointer from vibration and pulsation, thereby eliminating the need for a liquid-filled gauge case.

The Right Pressure Gauge for Any Application
Series 25 Accu-Drive gauges can accommodate pressure ranges from vacuum to 20,000 psi (varies by model). All Series 25 pressure gauges are overpressure protected to 150% of full scale.

Various case styles are available, with measurement accuracies ranging from 0.5% “Process” gauge models to 0.25% full scale “Test” gauges.

Reduced Maintenance & Longer Working Life
In most instances, a standard 3D Accu-Drive pressure gauge can directly replace an “old fashioned” liquid-filled gauge, providing reliable performance without the maintenance headaches cited above.

When compared to liquid-filled gauges, Accu-Drive gauges have been shown to last as much as ten times longer in applications with extreme pulsation and vibration. The net effect of these benefits, coupled with a six-year product warranty, is a dramatic reduction in your cost of ownership.

And, with no gears or wear points, our Accu-Drive gauges maintain their rated accuracy over the entire life of the gauge, without the need for costly periodic recalibration.

Manufactured from Premium Quality Materials
Series 25 Accu-Drive pressure gauges utilize the finest materials of construction. Gauge cases can be either ABS or 300 Series stainless steel. Bourdon tubes are constructed of Inconel, a highly elastic material with excellent corrosion resistance. All other wetted parts are 316 stainless steel.