{"id":15646,"date":"2022-11-21T12:52:24","date_gmt":"2022-11-21T17:52:24","guid":{"rendered":"https:\/\/blog-stage.wika.cloudpowered.services\/us\/\/?p=15646"},"modified":"2023-04-25T10:13:25","modified_gmt":"2023-04-25T15:13:25","slug":"what-is-a-diaphragm-pressure-gauge-and-how-does-it-work","status":"publish","type":"post","link":"https:\/\/blog-stage.wika.cloudpowered.services\/us\/knowhow\/what-is-a-diaphragm-pressure-gauge-and-how-does-it-work\/","title":{"rendered":"What Is a Diaphragm Pressure Gauge, and How Does It Work?"},"content":{"rendered":"

The <\/strong>flexible membrane in a diaphragm pressure gauge, a specialized industrial gauge, gives it several advantages over standard Bourdon tube gauges and capsule pressure gauges.<\/strong><\/p>\n

A diaphragm pressure gauge, sold under the Sealgauge\u2122 brand at WIKA and also known as a Shaeffer gauge in the industry, uses a sensitive yet robust diaphragm as the measuring element. The main characteristic of a diaphragm gauge is that it does not require a transmitting liquid (system fill) to transfer the pressure displacement into a pointer rotation. A push rod connects the diaphragm with the movement mechanism.<\/p>\n

Comparing Diaphragm Gauges and Bourdon Tube Gauges<\/h2>\n

Diaphragm pressure gauges are easily distinguishable from Bourdon tube gauges<\/a>. The latter houses the Bourdon tube inside the case, while the diaphragm gauge contains the diaphragm sandwiched between the upper and lower housing (flange) horizontally outside of the case. The size of the flange depends on the pressure range. Ranges \u2264100″WC (250 mbar) require a larger diaphragm (nominal size 160 mm, or 6″) while ranges >100″WC (250 mbar) use a smaller diaphragm (nominal size 100 mm, or 4″). \u00a0\u00a0<\/span><\/p>\n

Diaphragm Gauges vs. Diaphragm Seals<\/h2>\n

Do not confuse a diaphragm gauge with a diaphragm seal<\/a>. The diaphragm seal is just a component and requires a Bourdon tube gauge to indicate the pressure, while a diaphragm gauge is a pressure indicator that uses a diaphragm as the sensing element.<\/p>\n

In industrial applications, the diaphragm has grooved concentric circles, creating a larger surface area for optimized pressure measuring and service life.<\/p>\n

\u2022 \u00a0The upper housing of the diaphragm seal is connected to the case.
\n<\/span>\u2022 \u00a0There are no threaded or welded connection.<\/span><\/p>\n

\n

\"\"<\/a>

Diaphragm gauge upper housing<\/p><\/div>\n \n

\"\"<\/a>

Diaphragm seal instrument connection (threaded)<\/p><\/div>\n \n

\"\"<\/a>

Diaphragm seal with welded instrument connection<\/p><\/div>\n <\/p>\n

 <\/p>\n

 <\/p>\n

 <\/p>\n

 <\/p>\n

 <\/p>\n

 <\/p>\n

 <\/p>\n

 <\/p>\n

 <\/p>\n

 <\/p>\n

 <\/p>\n

 <\/p>\n

 <\/p>\n

The unique characteristics of a diaphragm pressure gauge makes it a unique problem solver in the process industry.<\/span><\/p>\n

\u00a0<\/span><\/p>\n

[contact-form-7 id=”14552″ title=”Blog Contact Form”]<\/span><\/p>\n","protected":false},"excerpt":{"rendered":"

The flexible membrane in a diaphragm pressure gauge, a specialized industrial gauge, gives it several advantages over standard Bourdon tube gauges and capsule pressure gauges. A diaphragm pressure gauge, sold under the Sealgauge\u2122 brand at WIKA and also known as a Shaeffer gauge in the industry, uses a sensitive yet robust diaphragm as the measuring […]<\/p>\n","protected":false},"author":301,"featured_media":15648,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[5,220],"tags":[1110,1109,687],"class_list":["post-15646","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-knowhow","category-pressure-products","tag-low-pressure","tag-overpressure","tag-pressure-measurement"],"acf":[],"yoast_head":"\nWhat Is a Diaphragm Pressure Gauge? - WIKA blog<\/title>\n<meta name=\"description\" content=\"This industrial pressure gauge is ideal for measuring low pressures, in processes with high overpressure, and for challenging media.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/blog-stage.wika.cloudpowered.services\/us\/knowhow\/what-is-a-diaphragm-pressure-gauge-and-how-does-it-work\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"What Is a Diaphragm Pressure Gauge? 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