Description Specifications Literature Description Direct Readout, No Barometric Adjustments Because applied pressure is referenced against an evacuated element, WIKA gauges read out true absolute pressure directly. No corrections or adjustments required. High Accuracy and Compact Size Accuracy is 0.1% of full scale; dial diameter is only 6". This combination of high accuracy and compact size makes for smaller and more efficient test stands. Excellent Readability The pointer covers full scale in two revolutions, permitting a scale 30" long. This is more than twice as long as same size single-revolution gauges. It permits up to 1,000 scale graduations with a minimum of 1/32" of white space between them. This and a knife-edge pointer allow readings to better than 0.03% of full scale. Calibration is Traceable to National Institute of Standards and Technology (NIST) A computer-assisted plotter marks calibration points and the graduations between them on each dial. This produces a scale which precisely matches the characteristics of its own mechanism and pressure element. Instruments supplied are certified traceable to NIST. Performs Better than the Rated Accuracy Excellent readability, custom dial calibration, and individual assembly and adjustment of each mechanism add up to an accuracy of 0.1% full scale. This figure is the minimum performance, which can be expected. After rigorous testing, any WIKA gauge which fails to perform better than the rated accuracy is rejected. Rugged Design The case is heavy cast aluminum. The case is heavy cast aluminum. Ranges of 100 psia and above have extra strong tempered glass windows and a blowout plug in the back of the case. Overpressuring these gauges up to 10% above full scale will not damage the mechanism nor affect accuracy. State of California Proposition 65 WARNINGCancer and Reproductive Harm - www.P65Warnings.ca.gov. Product Specifications Dial Size 6" Accuracy 0.1% of full scale Repeatability 0.03% of full scale Standard Ranges and Ordering Numbers Pressure Range Graduation Ordering Number 0-15.5 psia 0.02 psia 61B-1A-0015 0-25 psia 0.05 psia 61B-1A-0025 0-35 psia 0.05 psia 61B-1A-0035 0-50 psia 0.1 psia 61B-1A-0050 0-100 psia 0.2 psia 61B-1A-0100 0-150 psia 0.2 psia 61B-1A-0150 0-200 psia 0.5 psia 61B-1A-0200 0-300 psia 0.5 psia 61B-1A-0300 0-500 psia 1.0 psia 61B-1A-0500 0-800 mm Hg 1.0 mm 61B-1D-0800 0-31.5" Hg 0.05" 61B-1B-0031 0-50" Hg 0.1" 61B-1B-0050 0-70" Hg 0.1" 61B-1B-0070 0-100" Hg 0.2" 61B-1B-0100 Literature & Docs Accessories