The “direct drive” concept couples the bourdon tube directly to the shaft-pointer, thereby streamlining the design and reducing the number of moving parts from approximately 12 down to one. 30 years of industrial application have proven that this design is vastly superior to the “C shaped” bourdon tube and movement system incorporated in other pressure gauges...specially for vibration and pulsation!!
In many severe service applications, the “C shaped” pressure gauge cases are filled with silicone to dampen and lubricate their movements and increase service life. Besides adding cost to the gauge, the liquid fill causes other problems....dial discoloration and added maintenance difficulties.
The Series-24 “direct drive” gauges come with a dampening gel in the bearing. This “shaft dampening” approach isolates the pointer from vibration and pulsation, thereby eliminating the requirement for liquid filling of the pressure gauge case.
In most instances, a standard 3D Pressure Gauge | Accu-Drive can directly replace an “old fashioned” liquid filled gauge. When compared to a liquid filled gauge, the Pressure Gauge | Accu-Drive have been shown to last as much as ten times longer in applications with extreme vibration and pulsation.
The net effect of these benefits is a dramatic lowering of your cost of ownership!! Additionally, because of a lack of gears and wear points, the Accu-Drive series of gauges maintain their rated accuracy over the entire life of the gauge without the need for costly periodic recalibration.
All Pressure Gauge | Accu-Drive - Series-24 utilize the finest materials of construction. Gauge case materials can be either Valox or powder coated Aluminum and the bourdon tube is constructed of Inconel X- 750, a highly elastic material with excellent corrosion resistance. The wetted parts are of 316 SS. The balance of the gauge hardware is designed to minimize corrosion associated with challenging field environments.
The extremely robust bourdon tube system offers outstanding overpressure protection of 150% of full scale on pressure ranges from vacuum to 10,000 PSI. Various case styles are available with measurement accuracies ranging from 0.5% midscale for a Process gauge to 0.25% full scale for a Test gauge. Dial sizes of 2.5", 4.5" and 6" are available.
The combination of lower cost of ownership, long service life, “no maintenance” direct drive technology, robust design platform and a wide array of pressure ranges makes the Series-24 Accu-Drive “direct drive difference” pressure gauges from 3D Instruments the ideal choice for your demanding pressure monitoring or test and calibration applications.