WIKA 9804439 Capsule Low Pressure Gauge, Liquid-Filled, Stainless Steel 316L Wetted Parts, 4" Dial, 5-0-5" WC Range, +/-1.5% Accuracy, 1/2" Male NPT Connection, Bottom Mount

The WIKA capsule low pressure gauge has stainless steel 316L wetted parts, which resist corrosion to chloride, and a circular dial that is enclosed in a corrosion-resistant stainless steel case. The gauge measures pressure up to 10 pounds per square inch (psi) or 200 inches of water (inH2O), and is accurate to + or - 1.5 percent of span over the entire range of the gauge. The male connection is mounted on the bottom of the gauge and comes with the choice of a 1/4" or 1/2" National Pipe Thread (NPT) rate. This gauge is suitable for outdoor use where low pressure measurements are needed.

Pressure gauges are instruments used to measure the pressure of a gas or liquid inside a vessel and, often, to help ensure the optimal amount of pressure for a given application. Pressure gauges can range from everyday instruments, such as those used to measure the air pressure in a car or bicycle tire, to highly accurate gauges used in mechanical and industrial processing. Most often, pressure gauges measure pressure relative to another reference. For instance, gauge pressure measures pressure relative to ambient air. An example of a pressure gauge measuring relative to ambient air is a tire pressure gauge or a blood pressure gauge. Differential pressure is the difference in pressure between two points, such as when measuring liquid flow along various points in a pipeline. An absolute pressure gauge measures pressure relative to a perfect vacuum, such as an atmospheric or barometric pressure gauge. All types of pressure gauges include either a male or a female mount to connect to the vessel where pressure is being measured, and display results on a dial with varying increments of measure across a given range.

WIKA Instrument Corporation is a global manufacturer of pressure and temperature measurement instruments, including pressure gauges, diaphragm seals, pressure transmitters, and thermometers, that meet International Organization for Standardization (ISO) standards for quality assurance. The company, founded in 1946, is headquartered in Lawrenceville, GA.