{"id":3019,"date":"2025-06-16T00:29:11","date_gmt":"2025-06-16T00:29:11","guid":{"rendered":"https:\/\/altal.md\/?post_type=product&#038;p=3019"},"modified":"2026-07-01T22:46:28","modified_gmt":"2026-07-01T19:46:28","slug":"pressure-sensor-45-bar","status":"publish","type":"product","link":"https:\/\/altal.md\/en\/senzor-de-presiune-45-bar\/","title":{"rendered":"Pressure sensor 45 bar"},"content":{"rendered":"<hr \/>\n<h2>Pressure sensor 45 bar<\/h2>\n<h3>characteristics, use and recommendations<\/h3>\n<p>Refrigerant pressure sensor 45 bar WNK85x45 \u2014 is a high-precision device designed for measuring pressure in systems using various types of refrigerants. This sensor is equipped with piezoresistive technology and provides an output signal of 0\u20265 V, which makes it a versatile solution for <a href=\"https:\/\/altal.md\/en\/heat-pump-altal\/\" target=\"_blank\" rel=\"noopener\">heat pumps<\/a>, air conditioning systems and refrigeration installations.<\/p>\n<hr \/>\n<h4><strong>Pressure sensor 45 bar. Technical specifications<\/strong><\/h4>\n<ul>\n<li><strong>Measurement range<\/strong>: 0\u202645.5 bar<\/li>\n<li><strong>Output signal<\/strong>: logometric, 0,5\u20264,5 V<\/li>\n<li><strong>Feeding<\/strong>: 4.5\u20265.5 V DC<\/li>\n<li><strong>Operating temperature<\/strong>: -40\u2026135 \u00b0C<\/li>\n<li><strong>Protection class<\/strong>: IP65<\/li>\n<li><strong>Connection<\/strong>: 7\/16-20UNF<\/li>\n<li><strong>Size<\/strong>: 21\u00d748,1 mm<\/li>\n<\/ul>\n<hr \/>\n<h4><strong>Pressure sensor 45 bar. Advantages<\/strong><\/h4>\n<ol>\n<li><strong>Compatibility with latest generation refrigerants<\/strong> Suitable for use with R12, R22, R134A, R404A, R407C, R410A, R448A, R449A, R452A, R502, R507, R513A, R744, HFO 1234ze, R290, R32. Exceptions: not compatible with R717 (ammonia) and glycol.<\/li>\n<li><strong>Resistance to external influences<\/strong> The sensor demonstrates superior resistance to EMI interference and maintains signal stability even under difficult operating conditions.<\/li>\n<li><strong>Ease of installation<\/strong> The device can be mounted directly on the refrigerant pipe without the need for capillary tubes.<\/li>\n<li><strong>Durability<\/strong> The brass housing and robust construction ensure a long service life even under heavy loads.<\/li>\n<\/ol>\n<hr \/>\n<h4><strong>Application areas<\/strong><\/h4>\n<p>Pressure sensor 45 bar is used in the following systems:<\/p>\n<ul>\n<li>Air conditioning systems.<\/li>\n<li>Refrigeration installations.<\/li>\n<li>Heat pumps for heating, cooling and domestic hot water.<\/li>\n<li>Industrial refrigeration systems (except those using ammonia).<\/li>\n<\/ul>\n<hr \/>\n<h4><strong>Recommendations for connection and use<\/strong><\/h4>\n<ul>\n<li><strong>Assembly<\/strong> Use standard 7\/16-20UNF connector for installation. Ensure system tightness to avoid refrigerant loss.<\/li>\n<li><strong>Log in<\/strong> Power is supplied to the sensor via the 0.5\u20264.5 V analog output. For correct operation, use a DC power supply with parameters of 4.5\u20265.5 V.<\/li>\n<li><strong>Maintenance<\/strong>\n<ol>\n<li>Periodically check connections for corrosion or leaks.<\/li>\n<li>Clean the sensor surface to avoid reducing the accuracy of measurements.<\/li>\n<li>Do not use the sensor with incompatible refrigerants, such as ammonia (R717) or glycol solutions.<\/li>\n<\/ol>\n<\/li>\n<\/ul>\n<hr \/>\n<h4><strong>Why choose a 45 bar pressure sensor?<\/strong><\/h4>\n<ol>\n<li><strong>High measurement accuracy<\/strong>: Technology <a href=\"https:\/\/en.wikipedia.org\/wiki\/Piezoresistive_effect\" target=\"_blank\" rel=\"noopener\">piezoresistive<\/a> guarantees accurate and reliable results.<\/li>\n<li><strong>Wide operating temperature range<\/strong>: from -40\u00b0C to +135\u00b0C, allowing use in various climatic conditions.<\/li>\n<li><strong>Affordable price<\/strong>: this sensor is an economical choice for heating and cooling systems.<\/li>\n<\/ol>\n<hr \/>\n<h4><strong>Conclusion<\/strong><\/h4>\n<p>Pressure sensor 45 bar WNK85x45 \u2014 is a reliable, economical and universal device for systems using most modern refrigerants. High accuracy, resistance to interference and ease of installation make it an ideal choice for a wide range of applications. Order Pressure sensor 45 bar from the ALTAL online store. We offer competitive prices, quality guarantee and fast delivery. \ud83d\udca1 <strong>Expert tip:<\/strong> Periodically check the sensor&#039;s operation and perform preventive maintenance to extend the life of the equipment and avoid unforeseen failures.<\/p>\n<table style=\"height: 216px; width: 51.2789%;\" border=\"1\" width=\"43.143%\">\n<tbody>\n<tr style=\"height: 36px;\">\n<td style=\"width: 20.7197%; height: 36px; text-align: center;\" width=\"125\">Model<\/td>\n<td style=\"width: 40.4216%; height: 36px; text-align: center;\" colspan=\"3\" width=\"182\"><strong><span style=\"color: #0000ff;\">Pressure sensor 45 bar WNK85x45<\/span><\/strong><\/td>\n<\/tr>\n<tr style=\"height: 36px;\">\n<td style=\"width: 20.7197%; height: 36px;\">Pressure (PSI)<\/td>\n<td style=\"width: 12.5192%; height: 36px; text-align: center;\">-14.5 la 653<\/td>\n<td style=\"width: 14.2644%; height: 36px; text-align: center;\">PSI<\/td>\n<td style=\"width: 13.638%; height: 36px; text-align: center;\">0,5 \u2013 4,5V<\/td>\n<\/tr>\n<tr style=\"height: 36px;\">\n<td style=\"width: 20.7197%; height: 36px;\">Pressure (bar)<\/td>\n<td style=\"width: 12.5192%; height: 36px; text-align: center;\">-1 the 45<\/td>\n<td style=\"width: 14.2644%; height: 36px; text-align: center;\">Bar<\/td>\n<td style=\"width: 13.638%; height: 36px; text-align: center;\">0,5 \u2013 4,5V<\/td>\n<\/tr>\n<tr style=\"height: 36px;\">\n<td style=\"width: 20.7197%; height: 36px;\">Pressure (kPa)<\/td>\n<td style=\"width: 12.5192%; height: 36px; text-align: center;\">-1000 to 4500<\/td>\n<td style=\"width: 14.2644%; height: 36px; text-align: center;\">kPa<\/td>\n<td style=\"width: 13.638%; height: 36px; text-align: center;\">0,5 \u2013 4,5V<\/td>\n<\/tr>\n<tr style=\"height: 36px;\">\n<td style=\"width: 20.7197%; height: 36px;\">Excessive pressure (bar)<\/td>\n<td style=\"width: 26.7836%; height: 36px; text-align: center;\" colspan=\"2\"><span class=\"base\"><span class=\"mord\"><span class=\"mord mathnormal\">P<\/span><span class=\"msupsub\"><span class=\"vlist-t vlist-t2\"><span class=\"vlist-r\"><span class=\"vlist\"><span class=\"sizing reset-size6 size3 mtight\"><span class=\"mord mtight\"><span class=\"mord text mtight\"><span class=\"mord cyrillic_fallback mtight\">rooms<\/span><\/span><\/span><\/span><\/span><span class=\"vlist-s\">\u200b<\/span><\/span><\/span><\/span><\/span><span class=\"mrel\">=<\/span><\/span><span class=\"base\"><span class=\"mord\"><span class=\"mord mathnormal\">P<\/span><span class=\"msupsub\"><span class=\"vlist-t vlist-t2\"><span class=\"vlist-r\"><span class=\"vlist\"><span class=\"sizing reset-size6 size3 mtight\"><span class=\"mord mtight\"><span class=\"mord text mtight\"><span class=\"mord cyrillic_fallback mtight\">fact<\/span><\/span><\/span><\/span><\/span><span class=\"vlist-s\">\u200b<\/span><\/span><\/span><\/span><\/span><span class=\"mbin\">\u2212<\/span><\/span><span class=\"base\"><span class=\"mord\"><span class=\"mord mathnormal\">P<\/span><span class=\"msupsub\"><span class=\"vlist-t vlist-t2\"><span class=\"vlist-r\"><span class=\"vlist\"><span class=\"sizing reset-size6 size3 mtight\"><span class=\"mord mtight\"><span class=\"mord text mtight\"><span class=\"mord cyrillic_fallback mtight\">atm<\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/td>\n<td style=\"width: 13.638%; height: 36px; text-align: center;\">Bar<\/td>\n<\/tr>\n<tr style=\"height: 36px;\">\n<td style=\"width: 20.7197%; height: 36px;\">Swirl pressure (bar)<\/td>\n<td style=\"height: 36px; width: 26.7836%; text-align: center;\" colspan=\"2\">110<\/td>\n<td style=\"width: 13.638%; height: 36px; text-align: center;\">Bar<\/td>\n<\/tr>\n<tr>\n<td style=\"width: 20.7197%; height: 36px;\">Mechanical connection<\/td>\n<td style=\"width: 40.4216%; text-align: center;\" colspan=\"3\">7\/16-20UNF<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>&nbsp;<\/p>\n<h2 data-section-id=\"juforp\" data-start=\"0\" data-end=\"44\">FAQ \u2014 Pressure sensor 45 bar WNK85x45<\/h2>\n<h3 data-section-id=\"1dz3qpu\" data-start=\"46\" data-end=\"124\">1. For what types of systems is the 45 bar pressure sensor used?<\/h3>\n<p data-start=\"125\" data-end=\"358\">The WNK85x45 sensor is used in HVAC systems, refrigeration systems, heat pumps, air conditioning equipment and industrial cooling applications. It is suitable for monitoring pressure in refrigerant circuits.<\/p>\n<hr data-start=\"360\" data-end=\"363\" \/>\n<h3 data-section-id=\"1i1jl7w\" data-start=\"365\" data-end=\"413\">2. What refrigerants is it compatible with?<\/h3>\n<p data-start=\"414\" data-end=\"595\">The device is compatible with most modern refrigerants, including:<br \/>\nR22, R32, R134A, R404A, R407C, R410A, R448A, R449A, R452A, R507, R513A, R744, HFO1234ze and R290.<\/p>\n<p data-start=\"597\" data-end=\"619\">Not compatible with:<\/p>\n<ul data-start=\"620\" data-end=\"664\">\n<li data-section-id=\"9tln58\" data-start=\"620\" data-end=\"636\">R717 (amoniac)<\/li>\n<li data-section-id=\"16bpjtu\" data-start=\"637\" data-end=\"664\">glycol-based fluids<\/li>\n<\/ul>\n<hr data-start=\"666\" data-end=\"669\" \/>\n<h3 data-section-id=\"5y6ddz\" data-start=\"671\" data-end=\"720\">3. What type of output signal does the sensor provide?<\/h3>\n<p data-start=\"721\" data-end=\"861\">The sensor uses a 0.5\u20264.5 V logarithmic analog signal, compatible with many HVAC controllers, electronic boards and automation systems.<\/p>\n<hr data-start=\"863\" data-end=\"866\" \/>\n<h3 data-section-id=\"1c9vs0m\" data-start=\"868\" data-end=\"915\">4. What supply voltage is required?<\/h3>\n<p data-start=\"916\" data-end=\"992\">A DC power supply between 4.5 and 5.5 V is required for proper operation.<\/p>\n<hr data-start=\"994\" data-end=\"997\" \/>\n<h3 data-section-id=\"1oal82w\" data-start=\"999\" data-end=\"1054\">5. What is the maximum range of measured pressure?<\/h3>\n<p data-start=\"1055\" data-end=\"1186\">The WNK85x45 model can measure pressures between 0 and 45.5 bar, making it suitable for modern refrigeration systems and heat pumps.<\/p>\n<hr data-start=\"1188\" data-end=\"1191\" \/>\n<h3 data-section-id=\"8m5fin\" data-start=\"1193\" data-end=\"1237\">6. Can it be mounted directly on the installation?<\/h3>\n<p data-start=\"1238\" data-end=\"1387\">Yes. The sensor mounts directly to the refrigerant pipe via the standard 7\/16-20UNF connection, without the use of additional capillary tubes.<\/p>\n<p data-start=\"1238\" data-end=\"1387\"><a href=\"https:\/\/altal.md\/en\/pressure-sensor-35-bar\/\" target=\"_blank\" rel=\"noopener\">Recommended similar product<\/a><\/p>\n<h3>Compatible component<\/h3>\n<ul>\n<li style=\"list-style-type: none;\">\n<ul>\n<li><a href=\"https:\/\/altal.md\/en\/schrader-valve-with-60-mm-tube-sae-1-4\/\" target=\"_blank\" rel=\"noopener\">Schrader cu tub 60 mm SAE 1\/4\u201dSupapa expansiune termostatic Castel 2210\/4E<\/a><\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<hr \/>","protected":false},"excerpt":{"rendered":"<h2><span style=\"color: #800080;\">Model: WNK85x45<\/span><\/h2>\n<ul>\n<li><strong>Measurement range<\/strong>: 0\u202645.5 bar<\/li>\n<li><strong>Output signal<\/strong>: logometric, 0,5\u20264,5 V<\/li>\n<li><strong>Feeding<\/strong>: 4.5\u20265.5 V DC<\/li>\n<li><strong>Operating temperature<\/strong>: -40\u2026135 \u00b0C<\/li>\n<li><strong>Connection<\/strong>: 7\/16-20UNF<\/li>\n<li><strong>Size<\/strong>: 21\u00d748,1 mm<\/li>\n<\/ul>\n<hr \/>\n<p>&nbsp;<\/p>","protected":false},"featured_media":2315,"comment_status":"open","ping_status":"closed","template":"","meta":{"_kad_post_transparent":"default","_kad_post_title":"","_kad_post_layout":"default","_kad_post_sidebar_id":"","_kad_post_content_style":"default","_kad_post_vertical_padding":"default","_kad_post_feature":"","_kad_post_feature_position":"","_kad_post_header":false,"_kad_post_footer":false},"product_brand":[198],"product_cat":[280,183],"product_tag":[190,439],"class_list":["post-3019","product","type-product","status-publish","has-post-thumbnail","product_brand-altal","product_cat-piese-pentru-pompe-de-caldura","product_cat-catalog","product_tag-pompa-de-caldura","product_tag-sensor-presiune","product_shipping_class-greutate-mica","first","instock","featured","taxable","shipping-taxable","purchasable","product-type-simple","entry","content-bg","loop-entry"],"_links":{"self":[{"href":"https:\/\/altal.md\/en\/wp-json\/wp\/v2\/product\/3019","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/altal.md\/en\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/altal.md\/en\/wp-json\/wp\/v2\/types\/product"}],"replies":[{"embeddable":true,"href":"https:\/\/altal.md\/en\/wp-json\/wp\/v2\/comments?post=3019"}],"version-history":[{"count":1,"href":"https:\/\/altal.md\/en\/wp-json\/wp\/v2\/product\/3019\/revisions"}],"predecessor-version":[{"id":12024,"href":"https:\/\/altal.md\/en\/wp-json\/wp\/v2\/product\/3019\/revisions\/12024"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/altal.md\/en\/wp-json\/wp\/v2\/media\/2315"}],"wp:attachment":[{"href":"https:\/\/altal.md\/en\/wp-json\/wp\/v2\/media?parent=3019"}],"wp:term":[{"taxonomy":"product_brand","embeddable":true,"href":"https:\/\/altal.md\/en\/wp-json\/wp\/v2\/product_brand?post=3019"},{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/altal.md\/en\/wp-json\/wp\/v2\/product_cat?post=3019"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/altal.md\/en\/wp-json\/wp\/v2\/product_tag?post=3019"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}