{"id":2257,"date":"2021-07-29T01:48:10","date_gmt":"2021-07-29T01:48:10","guid":{"rendered":"https:\/\/ancor.biz\/?post_type=product&#038;p=2257"},"modified":"2025-08-18T12:01:41","modified_gmt":"2025-08-18T04:01:41","slug":"dwyer-series-478a-digital-manometer","status":"publish","type":"product","link":"https:\/\/ancor.biz\/index.php\/product\/dwyer-series-478a-digital-manometer\/","title":{"rendered":"DWYER Series 478A Digital Manometer"},"content":{"rendered":"<h1>Series 478A Digital Manometer, Dual Pressure Measurement, Electronic Zeroing, \u00b11.5% Accuracy<\/h1>\n<p>&nbsp;<\/p>\n<p><a href=\"https:\/\/ancor.biz\/index.php\/product-category\/brand\/dwyer-instruments-brand\/\">DWYER<\/a> Series 478A Digital Manometer\u00a0can be used to measure positive, negative, or differential pressures. DWYER Series <a href=\"https:\/\/intl.dwyer-inst.com\/Product\/Pressure\/Manometers\/Digital\/Series476A-478A?Query=478A\">478A<\/a> Digital Manometer for both units are constructed of an extruded aluminum case for exceptional durability.<\/p>\n<p>&nbsp;<\/p>\n<section id=\"features\" class=\"ui-tabs-panel ui-widget-content ui-corner-bottom\" role=\"tabpanel\" aria-labelledby=\"ui-id-4\" aria-expanded=\"true\" aria-hidden=\"false\">\n<h2 class=\"tab-heading\">Features<\/h2>\n<ul>\n<li>One button auto-zero function<\/li>\n<li>Auto power off function to conserve battery life<\/li>\n<li>Rugged extruded aluminum housing<\/li>\n<li>Instant selection of up to nine English\/metric units<\/li>\n<li>\u00b10.5% FS accuracy<\/li>\n<\/ul>\n<\/section>\n<p>&nbsp;<\/p>\n<h2>Differential Pressure<\/h2>\n<table class=\"product-table\">\n<tbody>\n<tr>\n<th class=\"model-number\" nowrap=\"nowrap\" width=\"\">Model<\/th>\n<th class=\"description\" width=\"\">Description<\/th>\n<\/tr>\n<tr>\n<td class=\"model-number\" nowrap=\"nowrap\" width=\"\">478A-0<\/td>\n<td class=\"description\" width=\"\">Digital differential manometer, range -4 to 4&#8243; w.c.<\/td>\n<\/tr>\n<tr>\n<td class=\"model-number\" nowrap=\"nowrap\" width=\"\">478A-1<\/td>\n<td class=\"description\" width=\"\">Digital differential manometer, range -60 to 60&#8243; w.c.<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h1><\/h1>\n<h2 class=\"tab-heading\">Model Chart<\/h2>\n<table border=\"1\" width=\"96%\">\n<tbody>\n<tr valign=\"middle\">\n<td valign=\"middle\" nowrap=\"nowrap\"><strong>EXAMPLE<\/strong><\/td>\n<td nowrap=\"nowrap\"><strong>478A<\/strong><\/td>\n<td nowrap=\"nowrap\"><strong>0<\/strong><\/td>\n<td><strong>NIST<\/strong><\/td>\n<td><strong>Series 478A-0-NIST Differential Pressure Digital Manometer, range -4.00 to 4.00&#8243; w.c.., with NIST certificate of calibration.<\/strong><\/td>\n<\/tr>\n<tr valign=\"middle\">\n<td valign=\"middle\" nowrap=\"nowrap\"><strong>SERIES<\/strong><\/td>\n<td nowrap=\"nowrap\">478A<\/td>\n<td nowrap=\"nowrap\"><\/td>\n<td nowrap=\"nowrap\"><\/td>\n<td nowrap=\"nowrap\">Differetnial Pressure Digital Manometer<\/td>\n<\/tr>\n<tr valign=\"top\">\n<td valign=\"middle\" nowrap=\"nowrap\"><strong>RANGE<\/strong><\/td>\n<td nowrap=\"nowrap\"><\/td>\n<td nowrap=\"nowrap\">0<br \/>\n1<\/td>\n<td nowrap=\"nowrap\"><\/td>\n<td nowrap=\"nowrap\">-4.00 to 4.00&#8243; w.c.<br \/>\n-60.0 to 60.0&#8243; w.c.<\/td>\n<\/tr>\n<tr valign=\"middle\">\n<td valign=\"middle\" nowrap=\"nowrap\"><strong>OPTIONS<\/strong><\/td>\n<td nowrap=\"nowrap\"><\/td>\n<td nowrap=\"nowrap\"><\/td>\n<td nowrap=\"nowrap\">NIST<\/td>\n<td nowrap=\"nowrap\">NIST Certificate of Calibration<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>&nbsp;<\/p>\n<section id=\"specs\" class=\"ui-tabs-panel ui-widget-content ui-corner-bottom\" role=\"tabpanel\" aria-labelledby=\"ui-id-3\" aria-expanded=\"true\" aria-hidden=\"false\">\n<h2 class=\"tab-heading\">Specifications<\/h2>\n<ul>\n<li>Service: Air and compatible gases.<\/li>\n<li>Wetted Materials: Consult factory.<\/li>\n<\/ul>\n<ul class=\"list-specs lined\">\n<li class=\"title\">Accuracy: \u00b11.5% FS @ 72\u00b0F (22.2\u00b0C). Includes linearity and repeatability.<\/li>\n<li class=\"title\">Pressure Hysteresis: \u00b10.1% of FS.<\/li>\n<li class=\"title\">Pressure Limits: 5 psig (.34 bar).<\/li>\n<li class=\"title\">Temperature Limits: 0 to 140\u00b0F (-17.8 to 60\u00b0C).<\/li>\n<li class=\"title\">Compensated Temperature Limits: 32 to 104\u00b0F (0 to 40\u00b0C).<\/li>\n<li class=\"title\">Thermal Effect: 0.05% F.S.\/\u00b0F.<\/li>\n<li class=\"title\">Display: 4 digit LCD (.425&#8243;H x .234&#8243;W digits).<\/li>\n<li class=\"title\">Power Requirements: 9 V alkaline battery, installed non-functional, user replaceable.<\/li>\n<li class=\"title\">Process Connections: Barbed connection for use with 3\/16&#8243; or 1\/4&#8243; I.D. tubing.<\/li>\n<li class=\"title\">Weight: 10.8 oz (306 g).<\/li>\n<li class=\"title\">Agency Approvals: CE.<\/li>\n<\/ul>\n<\/section>\n<p>&nbsp;<\/p>\n<h2 class=\"tab-heading\">Accessories<\/h2>\n<ul>\n<li>A-201: Rubber latex tubing has less tendency to kink in storage and occupies less space, thus is best for portable work. 3\/16&#8243; ID, 9&#8242; length.<\/li>\n<li>A-47X-BOOT: Rubber boot for manometers (manometer not included).<\/li>\n<li>A-402A: Carrying case for most manometers; tough, gray nylon pouch, double zippered with belt loop<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Series 478A Digital Manometer, Dual Pressure Measurement, Electronic Zeroing, \u00b11.5% Accuracy &nbsp; DWYER Series 478A Digital Manometer\u00a0can be used to measure positive, negative, or differential pressures. DWYER Series 478A Digital Manometer for both units are constructed of an extruded aluminum case for exceptional durability. &nbsp; Features One button auto-zero function Auto power off function to &#8230; <a title=\"DWYER Series 478A Digital Manometer\" class=\"read-more\" href=\"https:\/\/ancor.biz\/index.php\/product\/dwyer-series-478a-digital-manometer\/\" aria-label=\"More on DWYER Series 478A Digital Manometer\">Read more<\/a><\/p>\n","protected":false},"featured_media":2258,"template":"","meta":{"_monsterinsights_skip_tracking":false,"_monsterinsights_sitenote_active":false,"_monsterinsights_sitenote_note":"","_monsterinsights_sitenote_category":0,"spay_email":""},"class_list":["post-2257","product","type-product","status-publish","has-post-thumbnail","hentry","product_cat-brand","product_cat-dwyer-instruments-dwyer-omega","product_cat-dwyer-instruments-brand","product_cat-dwyer-omega","product_cat-manometer-dwyer-instruments-brand","product_cat-manometer-dwyer-instruments-dwyer-omega","product_cat-manometer","product_cat-dwyer-instruments","product_cat-digital-manometer","product_tag-478a","product_tag-478a-digital-manometer","product_tag-478a-0","product_tag-478a-1","product_tag-dwyer-478a","product_tag-dwyer-series-478a-digital-manometer","sales-flash-overlay","woocommerce-text-align-center","woocommerce-image-align-center","do-quantity-buttons"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v23.3 - 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