The Differential Pressure Gauge (Series S2000) is a low cost mechanical gauge with aluminum housing for monitoring positive, negative, or differential pressure. Additional Details : The Series S2000 differential pressure gauges are low cost, diaphragm operated, mechanical differential pressure gauges that may be used in all applications where the Dwyer® Magnehelic® brand gages may be used. The Sensocon® Series S2000 differential pressure gauge can be used in applications for measuring positive, negative, or differential pressure with an accuracy of 2%. Standard applications include monitoring filter status, duct static pressure, room pressure, fan or blower pressure, paint booths, dust collectors, and cabinet purging along with many others.