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Liquid Filled Gauges Model 656 Open Front Stainless Steel Pressure Gauges DESCRIPTION SPECIFICATIONS The 656 Series are suitable for corrosive environments in chemical, petrochemical, refining, power, marine, and food and pharmaceutical processing applications. Liquid filled pressure gauges provide users with a number Model 656 with front flange of advantages in certain measurement applications. They are ideally suited for uses on equipment where excessive vibration and pulsation are encountered, such as pumps, compressors, machine tools, etc. The liquid fill minimizes the effect of these severe environments, Model 656 protects the gauge internals, and provides continuous lubrication on the mechanism, all adding up to extended service life. Liquid filling also provides greater protection of the gauge internals from corrosive atmospheres. AMETEK liquid filled gauges can be used with a variety of fill fluids including glycerin, mineral oil, and silicone oil. These gauges are available in 63 and 100mm sizes. ACCURACY Model 6562 (63mm): +1.6% of full scale (Grade B) Model 6566 (100mm): +1.0% of full scale (Grade 1A) PRESSURE RANGE 63mm: 30 inch Hg to 0 psi through 0 to 10,000 psi (0 to 6000 psi on the LBM model) 100mm: 30 inch Hg to 0 psi through 0 to 23,000 psi WORKING PRESSURE Steady: 50% of full scale Over Range Protection: 125% of full scale WORKING TEMPERATURE Ambient: -40°F to 140°F (-40°C to 60°C) Fluid: -4°F to 176°F (-20°C to 80°C) FILLING LIQUID: Glycerin, silicone, mineral oil BOURDON TUBE: 316L stainless steel Model 6562 (63mm): Less than or equal to 800 psi: C type Bourdon tube Greater than or equal to 1000 psi: Helical type Bourdon tube Model 6566 (100mm): Less than or equal to 1000 psi: C type Bourdon tube Greater than or equal to 1500 psi: Helical type Bourdon tube CASE PRESSURE RELIEF Top: Rubber disc for 63mm Back: Rubber disc for 100mm CASE AND BEZEL RING: 304 stainless steel; bayonet type MOVEMENT: 304 stainless steel WINDOW 63mm: Polycarbonate (laminated shatter-resistant glass window optional) 100mm: Laminated shatter-resistant glass window DIAL: White aluminum with black lettering* POINTER: 63mm aluminum alloy, black painted; adjustable pointer on 100mm, aluminum black PROCESS CONNECTION: 316L stainless steel - 63mm - 1/4– 18 NPT standard; 100mm: LM 1/4–18 NPT or 1/2–14 NPT standard; LBM - 1/4–18 NPT standard * ingle scale psi dials are standard, but dials can be changed out at the factory S for kPa/psi. SOLFRUNT 656 Series Liquid Fillable Pressure Gauges WARNING: Fill fluids can combine with strong oxidizing agents, including (but not limited to) chlorine, nitric acid, and hydrogen peroxide and result in an explosion which can cause property damage and personal injury. If gauges are to be used in such service, consult factory for other alternatives. In order to correctly use these gauges, it is recommended that users of pressure gauges become familiar with American National Standard ASME B40.100-2005 entitled “Pressure Gauges and Gauge Attachments.” This specification is available from the American Society of Mechanical Engineers, United Engineering Center, 345 East 47th Street, New York, NY 10017 ALL ORDERS CAN BE SENT TO: On-line fax: 215-323-9450 or e-mail to usg.sales@ametek.com © 2008, by AMETEK, Inc. All rights reserved. Printed in the U.S.A. 908PDF (160166) Sales/Technical Support: 215-257-6531 900 Clymer Avenue Sellersville, PA 18960 U.S.A. Customer Service: 727-536-7831 8600 Somerset Drive Largo, FL 33773 U.S.A. Specifications are subject to change without notice. Visit our Web site for the most up-to-date information.

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Liquid Filled Gauges Model 656 Open Front Stainless Steel Pressure Gauges FILL PLUG D BLOW OUT DISC (100 mm only) PRESSURE RANGES Low Mount psi** øA 30 in. Hg-0 30 in. Hg-0-15 E 30 in. Hg-0-30 30 in. Hg-0-60 30 in. Hg-0-100 F 30 in. Hg-0-150 INCHES (MM) 0-15 0-30 E D 0-60 0-100 CenterBack Mount 63 mm Only 0-160 0-200 0-300 0-400 øA øB 0-600 0-800 0-1000 E 15º 0-1500 D R 1.8 (63 mm) R 2.5 (100 mm) 0-2000 0-3000 3-120º LowerBack Mount Front Flange 0-6000 0-10,000 0-14,500 0-23,000* * Not available in 63mm * M * etric and dual scale dials are available. Please call Customer Service at...

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Liquid Filled Gauges Model 656 Open Front Stainless Steel Pressure Gauges SPEC NUMBER SELECTION CHART - 63mm Model 656 STEM MOUNTING 1/4-18 NPT (63mm) Model Number 6562 Low Mount Bourdon Tube 316L Stainless Steel 316L Stainless Steel Connection 316L Stainless Steel 316L Stainless Steel Range* 6562 Center-Back Mount Spec No. Spec No. 0-30” Hg VAC 256000 256024 30”-0-15 psi 256001 256025 30”-0-30 psi 256002 256026 30”-0-60 psi 256003 256027 30”-0-100 psi 256004 256028 30”-0-150 psi 256005 256029 0-15 psi 256007 256031 0-30 psi 256008 256032 0-60 psi 256009 256033 0-100 psi 256010 256034 0-160...

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Liquid Filled Gauges Model 656 Open Front Stainless Steel Pressure Gauges SPEC NUMBER SELECTION CHART - 63mm Model 656 FRONT FLANGE PANEL MOUNTING 1/4-18 NPT U-CLAMP PANEL MOUNTING 1/4-18 NPT Model Number 6562 Low Back Mount 6562 Low Back Mount Bourdon Tube 316L Stainless Steel 316L Stainless Steel Connection 316L Stainless Steel 316L Stainless Steel (63mm) Range* Spec No. Spec No. 0 - 30” Hg VAC 256048 256072 30” - 0 - 15 psi 256049 256073 30” - 0 - 30 psi 256050 256074 30” - 0 - 60 psi 256051 256075 30” - 0 - 100 psi 256052 256076 30” - 0 - 150 psi 256053 256077 0 - 15 psi 256055 256079 0...

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Liquid Filled Gauges Model 656 Open Front Stainless Steel Pressure Gauges SPEC NUMBER SELECTION CHART - 100mm Model 656 STEM MOUNTING Low Mount (100mm) FRONT FLANGE PANEL MOUNTING Low Back Mount Model Number 6566 Low Mount, 1/4-18 NPT 6566 Low Mount, 1/2-14 NPT 6566 Lower-Back Mount, 1/4-18 NPT Bourdon Tube 316L Stainless Steel 316L Stainless Steel 316L Stainless Steel Connection 316L Stainless Steel 316L Stainless Steel 316L Stainless Steel Spec No. Spec No. Spec No. 0-30” Hg VAC 356000 356025 356050 30”- 0-15 psi 356001 356026 356051 Range* 30”- 0-30 psi 356002 356027 356052 30”- 0-60 psi...

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