{"id":30597,"date":"2026-01-07T06:50:15","date_gmt":"2026-01-07T06:50:15","guid":{"rendered":"https:\/\/instrava.com\/?p=30597"},"modified":"2026-01-22T07:31:59","modified_gmt":"2026-01-22T07:31:59","slug":"differential-pressure-transmitters-selection-applications-and-industrial-guide","status":"publish","type":"post","link":"https:\/\/instrava.com\/fr\/differential-pressure-transmitters-selection-applications-and-industrial-guide\/","title":{"rendered":"Transmetteurs de pression diff\u00e9rentielle : S\u00e9lection, applications et guide industriel"},"content":{"rendered":"<div data-elementor-type=\"wp-post\" data-elementor-id=\"30597\" class=\"elementor elementor-30597\" data-elementor-post-type=\"post\">\n\t\t\t\t\r\n\t\t<div class=\"default no-position show_shadow rs-sticky-default elementor-element elementor-element-19558a46 e-flex e-con-boxed e-con e-parent\" data-id=\"19558a46\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\r\n\t\t\t\t<div class=\"elementor-element elementor-element-421c2100 elementor-widget elementor-widget-text-editor\" data-id=\"421c2100\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<h2 data-start=\"224\" data-end=\"746\">Differential Pressure Transmitters | Selection Guide &amp; Industrial Applications<\/h2>\r\n<p data-start=\"224\" data-end=\"746\">Differential pressure (DP) transmitters are essential instruments in modern industrial processes, providing precise measurement of pressure differences across systems. They play a critical role in applications such as flow measurement, level monitoring in pressurized tanks, and process control in oil &amp; gas, chemical, and water treatment industries. This guide provides an in-depth look at differential pressure transmitters, their types, working principles, key selection criteria, and practical industrial applications.<\/p>\r\n\r\n\r\n<hr data-start=\"748\" data-end=\"751\" \/>\r\n\r\n<h2 data-start=\"753\" data-end=\"800\">What Is a Differential Pressure Transmitter?<\/h2>\r\n<p data-start=\"802\" data-end=\"1216\"><a href=\"https:\/\/instrava.com\/product\/differential-pressure-transmitter\/\"><strong>A differential pressure transmitter<\/strong><\/a> measures the difference between two pressure points and converts it into a standardized electrical output, such as 4\u201320 mA or digital communication protocols like HART or Modbus. Unlike a standard pressure transmitter that measures absolute or gauge pressure at a single point, a DP transmitter can provide critical information about flow, level, and process conditions.<\/p>\r\n<p data-start=\"1218\" data-end=\"1235\"><strong data-start=\"1218\" data-end=\"1235\">Caract\u00e9ristiques principales :<\/strong><\/p>\r\n\r\n<ul data-start=\"1237\" data-end=\"1426\">\r\n \t<li data-start=\"1237\" data-end=\"1293\">\r\n<p data-start=\"1239\" data-end=\"1293\">Measures pressure difference (\u0394P) between two points<\/p>\r\n<\/li>\r\n \t<li data-start=\"1294\" data-end=\"1362\">\r\n<p data-start=\"1296\" data-end=\"1362\">Outputs standardized signal for integration with control systems<\/p>\r\n<\/li>\r\n \t<li data-start=\"1363\" data-end=\"1426\">\r\n<p data-start=\"1365\" data-end=\"1426\">Supports hazardous area certification for industrial safety<\/p>\r\n<\/li>\r\n<\/ul>\r\n<p data-start=\"1428\" data-end=\"1602\">Differential pressure transmitters are widely used where accurate process monitoring and control are required, making them indispensable in automated industrial environments.<\/p>\r\n\r\n\r\n<hr data-start=\"1604\" data-end=\"1607\" \/>\r\n\r\n<h2 data-start=\"1609\" data-end=\"1655\">How Differential Pressure Transmitters Work<\/h2>\r\n<p data-start=\"1657\" data-end=\"1708\">A DP transmitter consists of three main components:<\/p>\r\n\r\n<ol data-start=\"1710\" data-end=\"2193\">\r\n \t<li data-start=\"1710\" data-end=\"1878\">\r\n<p data-start=\"1713\" data-end=\"1878\"><strong data-start=\"1713\" data-end=\"1732\">\u00c9l\u00e9ment de d\u00e9tection<\/strong><br data-start=\"1732\" data-end=\"1735\" \/>Detects pressure on high- and low-pressure ports. Common sensor types include strain gauges, capacitive sensors, and piezoresistive sensors.<\/p>\r\n<\/li>\r\n \t<li data-start=\"1880\" data-end=\"2038\">\r\n<p data-start=\"1883\" data-end=\"2038\"><strong data-start=\"1883\" data-end=\"1906\">Signal Conditioning<\/strong><br data-start=\"1906\" data-end=\"1909\" \/>The transmitter electronics amplify, linearize, and compensate for temperature changes, ensuring accurate and stable readings.<\/p>\r\n<\/li>\r\n \t<li data-start=\"2040\" data-end=\"2193\">\r\n<p data-start=\"2043\" data-end=\"2193\"><strong data-start=\"2043\" data-end=\"2060\">Output Module<\/strong><br data-start=\"2060\" data-end=\"2063\" \/>Converts the conditioned signal to standard industrial outputs (4\u201320 mA, HART, Modbus) suitable for PLC, DCS, or SCADA systems.<\/p>\r\n<\/li>\r\n<\/ol>\r\n<p data-start=\"2195\" data-end=\"2235\"><strong data-start=\"2195\" data-end=\"2235\">Typical DP Measurement Applications:<\/strong><\/p>\r\n\r\n<ul data-start=\"2237\" data-end=\"2434\">\r\n \t<li data-start=\"2237\" data-end=\"2310\">\r\n<p data-start=\"2239\" data-end=\"2310\">Flow measurement using orifice plates, venturi tubes, or flow nozzles<\/p>\r\n<\/li>\r\n \t<li data-start=\"2311\" data-end=\"2360\">\r\n<p data-start=\"2313\" data-end=\"2360\">Liquid level measurement in pressurized tanks<\/p>\r\n<\/li>\r\n \t<li data-start=\"2361\" data-end=\"2434\">\r\n<p data-start=\"2363\" data-end=\"2434\">Filter monitoring to detect clogging or differential pressure changes<\/p>\r\n<\/li>\r\n<\/ul>\r\n\r\n<hr data-start=\"2436\" data-end=\"2439\" \/>\r\n\r\n<h2 data-start=\"2441\" data-end=\"2487\">Types of Differential Pressure Transmitters<\/h2>\r\n<p data-start=\"2489\" data-end=\"2586\">Differential pressure transmitters come in multiple types depending on features and applications:<\/p>\r\n\r\n<div class=\"TyagGW_tableContainer\">\r\n<div class=\"group TyagGW_tableWrapper flex w-fit flex-col-reverse\" tabindex=\"-1\">\r\n<div class=\"table-responsive\"><table class=\"w-fit min-w-(--thread-content-width)\" data-start=\"2588\" data-end=\"3157\">\r\n<thead data-start=\"2588\" data-end=\"2652\">\r\n<tr data-start=\"2588\" data-end=\"2652\">\r\n<th data-start=\"2588\" data-end=\"2595\" data-col-size=\"md\">Type<\/th>\r\n<th data-start=\"2595\" data-end=\"2606\" data-col-size=\"sm\">Pr\u00e9cision<\/th>\r\n<th data-start=\"2606\" data-end=\"2615\" data-col-size=\"sm\">Sortie<\/th>\r\n<th data-start=\"2615\" data-end=\"2638\" data-col-size=\"md\">Applications typiques<\/th>\r\n<th data-start=\"2638\" data-end=\"2652\" data-col-size=\"md\">Avantages<\/th>\r\n<\/tr>\r\n<\/thead>\r\n<tbody data-start=\"2715\" data-end=\"3157\">\r\n<tr data-start=\"2715\" data-end=\"2850\">\r\n<td data-start=\"2715\" data-end=\"2741\" data-col-size=\"md\">Standard DP Transmitter<\/td>\r\n<td data-col-size=\"sm\" data-start=\"2741\" data-end=\"2754\">\u00b10.1\u20130.25%<\/td>\r\n<td data-col-size=\"sm\" data-start=\"2754\" data-end=\"2764\">4-20 mA<\/td>\r\n<td data-col-size=\"md\" data-start=\"2764\" data-end=\"2806\">Flow measurement, basic process control<\/td>\r\n<td data-col-size=\"md\" data-start=\"2806\" data-end=\"2850\">Cost-effective, reliable for general use<\/td>\r\n<\/tr>\r\n<tr data-start=\"2851\" data-end=\"2982\">\r\n<td data-start=\"2851\" data-end=\"2874\" data-col-size=\"md\">Smart DP Transmitter<\/td>\r\n<td data-col-size=\"sm\" data-start=\"2874\" data-end=\"2887\">\u00b10.05\u20130.1%<\/td>\r\n<td data-col-size=\"sm\" data-start=\"2887\" data-end=\"2903\">HART \/ Modbus<\/td>\r\n<td data-col-size=\"md\" data-start=\"2903\" data-end=\"2936\">Flow, level, filter monitoring<\/td>\r\n<td data-col-size=\"md\" data-start=\"2936\" data-end=\"2982\">Advanced diagnostics, remote configuration<\/td>\r\n<\/tr>\r\n<tr data-start=\"2983\" data-end=\"3157\">\r\n<td data-start=\"2983\" data-end=\"3027\" data-col-size=\"md\">High-Range \/ High-Accuracy DP Transmitter<\/td>\r\n<td data-col-size=\"sm\" data-start=\"3027\" data-end=\"3042\">\u00b10.025\u20130.05%<\/td>\r\n<td data-col-size=\"sm\" data-start=\"3042\" data-end=\"3063\">4\u201320 mA or digital<\/td>\r\n<td data-col-size=\"md\" data-start=\"3063\" data-end=\"3109\">Critical process control, chemical reactors<\/td>\r\n<td data-col-size=\"md\" data-start=\"3109\" data-end=\"3157\">High precision, stable in harsh environments<\/td>\r\n<\/tr>\r\n<\/tbody>\r\n<\/table><\/div>\r\n<\/div>\r\n<\/div>\r\n\r\n<hr data-start=\"3159\" data-end=\"3162\" \/>\r\n\r\n<h2 data-start=\"3164\" data-end=\"3217\">Applications of Differential Pressure Transmitters<\/h2>\r\n<p data-start=\"3219\" data-end=\"3293\">DP transmitters are versatile and essential for many industrial processes:<\/p>\r\n\r\n<h3 data-start=\"3295\" data-end=\"3315\">Mesure du d\u00e9bit<\/h3>\r\n<p data-start=\"3317\" data-end=\"3547\">Differential pressure transmitters calculate flow using the <strong data-start=\"3377\" data-end=\"3439\">pressure drop across an orifice plate, venturi, or turbine<\/strong>. This method is widely used in oil &amp; gas pipelines, water distribution systems, and chemical process lines.<\/p>\r\n\r\n<h3 data-start=\"3549\" data-end=\"3591\">Level Measurement in Pressurized Tanks<\/h3>\r\n<p data-start=\"3593\" data-end=\"3778\">By measuring the <strong data-start=\"3610\" data-end=\"3661\">difference between the bottom and top of a tank<\/strong>, DP transmitters can provide continuous level measurement, particularly in <strong data-start=\"3737\" data-end=\"3777\">LPG, LNG, and chemical storage tanks<\/strong>.<\/p>\r\n\r\n<h3 data-start=\"3780\" data-end=\"3801\">Filter Monitoring<\/h3>\r\n<p data-start=\"3803\" data-end=\"3977\">DP transmitters monitor the pressure drop across filters to detect clogging or maintenance needs, ensuring uninterrupted operation in <strong data-start=\"3937\" data-end=\"3976\">water treatment and chemical plants<\/strong>.<\/p>\r\n\r\n<h3 data-start=\"3979\" data-end=\"4025\">Typical DP Transmitter Applications<\/h3>\r\n<div class=\"TyagGW_tableContainer\">\r\n<div class=\"group TyagGW_tableWrapper flex w-fit flex-col-reverse\" tabindex=\"-1\">\r\n<div class=\"table-responsive\"><table class=\"w-fit min-w-(--thread-content-width)\" data-start=\"4027\" data-end=\"4424\">\r\n<thead data-start=\"4027\" data-end=\"4074\">\r\n<tr data-start=\"4027\" data-end=\"4074\">\r\n<th data-start=\"4027\" data-end=\"4038\" data-col-size=\"sm\">L'industrie<\/th>\r\n<th data-start=\"4038\" data-end=\"4052\" data-col-size=\"sm\">Application<\/th>\r\n<th data-start=\"4052\" data-end=\"4074\" data-col-size=\"sm\">Measurement Target<\/th>\r\n<\/tr>\r\n<\/thead>\r\n<tbody data-start=\"4119\" data-end=\"4424\">\r\n<tr data-start=\"4119\" data-end=\"4184\">\r\n<td data-start=\"4119\" data-end=\"4131\" data-col-size=\"sm\">P\u00e9trole et gaz<\/td>\r\n<td data-col-size=\"sm\" data-start=\"4131\" data-end=\"4156\">Pipelines &amp; separators<\/td>\r\n<td data-col-size=\"sm\" data-start=\"4156\" data-end=\"4184\">Flow rate, pressure drop<\/td>\r\n<\/tr>\r\n<tr data-start=\"4185\" data-end=\"4264\">\r\n<td data-start=\"4185\" data-end=\"4207\" data-col-size=\"sm\">Traitement chimique<\/td>\r\n<td data-col-size=\"sm\" data-start=\"4207\" data-end=\"4234\">Reactors &amp; process lines<\/td>\r\n<td data-col-size=\"sm\" data-start=\"4234\" data-end=\"4264\">Flow, level, filter health<\/td>\r\n<\/tr>\r\n<tr data-start=\"4265\" data-end=\"4355\">\r\n<td data-start=\"4265\" data-end=\"4286\" data-col-size=\"sm\">Eau et eaux us\u00e9es<\/td>\r\n<td data-col-size=\"sm\" data-start=\"4286\" data-end=\"4314\">Pump stations, filtration<\/td>\r\n<td data-col-size=\"sm\" data-start=\"4314\" data-end=\"4355\">System efficiency, maintenance alerts<\/td>\r\n<\/tr>\r\n<tr data-start=\"4356\" data-end=\"4424\">\r\n<td data-start=\"4356\" data-end=\"4375\" data-col-size=\"sm\">Production d'\u00e9lectricit\u00e9<\/td>\r\n<td data-col-size=\"sm\" data-start=\"4375\" data-end=\"4398\">Steam and fuel lines<\/td>\r\n<td data-col-size=\"sm\" data-start=\"4398\" data-end=\"4424\">Flow, pressure control<\/td>\r\n<\/tr>\r\n<\/tbody>\r\n<\/table><\/div>\r\n<\/div>\r\n<\/div>\r\n\r\n<hr data-start=\"4426\" data-end=\"4429\" \/>\r\n\r\n<h2 data-start=\"4431\" data-end=\"4476\">Key Selection Criteria for DP Transmitters<\/h2>\r\n<p data-start=\"4478\" data-end=\"4578\">Selecting the right differential pressure transmitter requires evaluating several technical factors:<\/p>\r\n\r\n<ol data-start=\"4580\" data-end=\"5267\">\r\n \t<li data-start=\"4580\" data-end=\"4715\">\r\n<p data-start=\"4583\" data-end=\"4715\"><strong data-start=\"4583\" data-end=\"4630\">Process Pressure Range &amp; Overpressure Limit<\/strong><br data-start=\"4630\" data-end=\"4633\" \/>Ensure the transmitter covers normal operating pressure with margin for spikes.<\/p>\r\n<\/li>\r\n \t<li data-start=\"4717\" data-end=\"4823\">\r\n<p data-start=\"4720\" data-end=\"4823\"><strong data-start=\"4720\" data-end=\"4743\">Media Compatibility<\/strong><br data-start=\"4743\" data-end=\"4746\" \/>Wetted materials must resist corrosion or abrasion from the process fluid.<\/p>\r\n<\/li>\r\n \t<li data-start=\"4825\" data-end=\"4972\">\r\n<p data-start=\"4828\" data-end=\"4972\"><strong data-start=\"4828\" data-end=\"4856\">Conditions environnementales<\/strong><br data-start=\"4856\" data-end=\"4859\" \/>Temperature extremes, vibration, humidity, and hazardous areas dictate housing and certification requirements.<\/p>\r\n<\/li>\r\n \t<li data-start=\"4974\" data-end=\"5129\">\r\n<p data-start=\"4977\" data-end=\"5129\"><strong data-start=\"4977\" data-end=\"5008\">Signal Output &amp; Integration<\/strong><br data-start=\"5008\" data-end=\"5011\" \/>Confirm compatibility with PLCs, DCS, or SCADA; choose 4\u201320 mA for analog systems or HART\/Modbus for smart devices.<\/p>\r\n<\/li>\r\n \t<li data-start=\"5131\" data-end=\"5267\">\r\n<p data-start=\"5134\" data-end=\"5267\"><strong data-start=\"5134\" data-end=\"5158\">Accuracy &amp; Stability<\/strong><br data-start=\"5158\" data-end=\"5161\" \/>Critical for precise flow and level measurement; consider long-term drift and temperature compensation.<\/p>\r\n<\/li>\r\n<\/ol>\r\n<h3 data-start=\"5269\" data-end=\"5314\">DP Transmitter Selection Checklist<\/h3>\r\n<div class=\"TyagGW_tableContainer\">\r\n<div class=\"group TyagGW_tableWrapper flex w-fit flex-col-reverse\" tabindex=\"-1\">\r\n<div class=\"table-responsive\"><table class=\"w-fit min-w-(--thread-content-width)\" data-start=\"5316\" data-end=\"5670\">\r\n<thead data-start=\"5316\" data-end=\"5342\">\r\n<tr data-start=\"5316\" data-end=\"5342\">\r\n<th data-start=\"5316\" data-end=\"5325\" data-col-size=\"sm\">Facteur<\/th>\r\n<th data-start=\"5325\" data-end=\"5342\" data-col-size=\"sm\">Consid\u00e9ration<\/th>\r\n<\/tr>\r\n<\/thead>\r\n<tbody data-start=\"5370\" data-end=\"5670\">\r\n<tr data-start=\"5370\" data-end=\"5426\">\r\n<td data-start=\"5370\" data-end=\"5387\" data-col-size=\"sm\">Pressure range<\/td>\r\n<td data-start=\"5387\" data-end=\"5426\" data-col-size=\"sm\">Normal and maximum process pressure<\/td>\r\n<\/tr>\r\n<tr data-start=\"5427\" data-end=\"5472\">\r\n<td data-start=\"5427\" data-end=\"5438\" data-col-size=\"sm\">Pr\u00e9cision<\/td>\r\n<td data-col-size=\"sm\" data-start=\"5438\" data-end=\"5472\">Required measurement precision<\/td>\r\n<\/tr>\r\n<tr data-start=\"5473\" data-end=\"5525\">\r\n<td data-start=\"5473\" data-end=\"5481\" data-col-size=\"sm\">Media<\/td>\r\n<td data-col-size=\"sm\" data-start=\"5481\" data-end=\"5525\">Chemical compatibility, corrosive fluids<\/td>\r\n<\/tr>\r\n<tr data-start=\"5526\" data-end=\"5582\">\r\n<td data-start=\"5526\" data-end=\"5540\" data-col-size=\"sm\">Environnement<\/td>\r\n<td data-col-size=\"sm\" data-start=\"5540\" data-end=\"5582\">Temperature, vibration, hazardous area<\/td>\r\n<\/tr>\r\n<tr data-start=\"5583\" data-end=\"5617\">\r\n<td data-start=\"5583\" data-end=\"5592\" data-col-size=\"sm\">Sortie<\/td>\r\n<td data-col-size=\"sm\" data-start=\"5592\" data-end=\"5617\">4\u201320 mA, HART, Modbus<\/td>\r\n<\/tr>\r\n<tr data-start=\"5618\" data-end=\"5670\">\r\n<td data-start=\"5618\" data-end=\"5632\" data-col-size=\"sm\">Maintenance<\/td>\r\n<td data-col-size=\"sm\" data-start=\"5632\" data-end=\"5670\">Calibration frequency, diagnostics<\/td>\r\n<\/tr>\r\n<\/tbody>\r\n<\/table><\/div>\r\n<\/div>\r\n<\/div>\r\n\r\n<hr data-start=\"5672\" data-end=\"5675\" \/>\r\n\r\n<h2 data-start=\"5677\" data-end=\"5744\">Differential Pressure Transmitters vs Other Pressure Instruments<\/h2>\r\n<div class=\"TyagGW_tableContainer\">\r\n<div class=\"group TyagGW_tableWrapper flex w-fit flex-col-reverse\" tabindex=\"-1\">\r\n<div class=\"table-responsive\"><table class=\"w-fit min-w-(--thread-content-width)\" data-start=\"5746\" data-end=\"6228\">\r\n<thead data-start=\"5746\" data-end=\"5801\">\r\n<tr data-start=\"5746\" data-end=\"5801\">\r\n<th data-start=\"5746\" data-end=\"5759\" data-col-size=\"sm\">Instrument<\/th>\r\n<th data-start=\"5759\" data-end=\"5773\" data-col-size=\"sm\">Measurement<\/th>\r\n<th data-start=\"5773\" data-end=\"5787\" data-col-size=\"sm\">Utilisation typique<\/th>\r\n<th data-start=\"5787\" data-end=\"5801\" data-col-size=\"sm\">Avantages<\/th>\r\n<\/tr>\r\n<\/thead>\r\n<tbody data-start=\"5856\" data-end=\"6228\">\r\n<tr data-start=\"5856\" data-end=\"5991\">\r\n<td data-start=\"5856\" data-end=\"5892\" data-col-size=\"sm\">Transmetteur de pression diff\u00e9rentielle<\/td>\r\n<td data-start=\"5892\" data-end=\"5916\" data-col-size=\"sm\">\u0394P between two points<\/td>\r\n<td data-col-size=\"sm\" data-start=\"5916\" data-end=\"5949\">Flow, level, filter monitoring<\/td>\r\n<td data-col-size=\"sm\" data-start=\"5949\" data-end=\"5991\">High accuracy, suitable for automation<\/td>\r\n<\/tr>\r\n<tr data-start=\"5992\" data-end=\"6120\">\r\n<td data-start=\"5992\" data-end=\"6024\" data-col-size=\"sm\">Standard Pressure Transmitter<\/td>\r\n<td data-start=\"6024\" data-end=\"6056\" data-col-size=\"sm\">Single point (gauge\/absolute)<\/td>\r\n<td data-start=\"6056\" data-end=\"6093\" data-col-size=\"sm\">Tank pressure, pipeline monitoring<\/td>\r\n<td data-col-size=\"sm\" data-start=\"6093\" data-end=\"6120\">Simpler, cost-effective<\/td>\r\n<\/tr>\r\n<tr data-start=\"6121\" data-end=\"6228\">\r\n<td data-start=\"6121\" data-end=\"6139\" data-col-size=\"sm\">Pressure Sensor<\/td>\r\n<td data-start=\"6139\" data-end=\"6167\" data-col-size=\"sm\">Voltage\/resistance signal<\/td>\r\n<td data-col-size=\"sm\" data-start=\"6167\" data-end=\"6202\">Lab, test, low-scale measurement<\/td>\r\n<td data-col-size=\"sm\" data-start=\"6202\" data-end=\"6228\">Low cost, simple setup<\/td>\r\n<\/tr>\r\n<\/tbody>\r\n<\/table><\/div>\r\n<\/div>\r\n<\/div>\r\n<p data-start=\"6230\" data-end=\"6375\"><strong data-start=\"6230\" data-end=\"6242\">Aper\u00e7u :<\/strong> For industrial automation, DP transmitters are preferred due to standardized outputs, diagnostics, and integration capabilities.<\/p>\r\n\r\n\r\n<hr data-start=\"6377\" data-end=\"6380\" \/>\r\n\r\n<h2 data-start=\"6382\" data-end=\"6418\">Conseils d'installation et d'entretien<\/h2>\r\n<ul data-start=\"6420\" data-end=\"6786\">\r\n \t<li data-start=\"6420\" data-end=\"6496\">\r\n<p data-start=\"6422\" data-end=\"6496\"><strong data-start=\"6422\" data-end=\"6435\">Mounting:<\/strong> Install at locations that minimize vibration and pulsation<\/p>\r\n<\/li>\r\n \t<li data-start=\"6497\" data-end=\"6590\">\r\n<p data-start=\"6499\" data-end=\"6590\"><strong data-start=\"6499\" data-end=\"6517\">Impulse Lines:<\/strong> Keep short, clean, and correctly oriented for differential measurement<\/p>\r\n<\/li>\r\n \t<li data-start=\"6591\" data-end=\"6694\">\r\n<p data-start=\"6593\" data-end=\"6694\"><strong data-start=\"6593\" data-end=\"6609\">Calibration:<\/strong> Periodically check zero\/span; smart DP transmitters often provide self-diagnostics<\/p>\r\n<\/li>\r\n \t<li data-start=\"6695\" data-end=\"6786\">\r\n<p data-start=\"6697\" data-end=\"6786\"><strong data-start=\"6697\" data-end=\"6717\">Hazardous Areas:<\/strong> Use ATEX or IECEx certified transmitters in flammable environments<\/p>\r\n<\/li>\r\n<\/ul>\r\n\r\n<hr data-start=\"6788\" data-end=\"6791\" \/>\r\n\r\n<h2 data-start=\"6793\" data-end=\"6822\">Questions fr\u00e9quemment pos\u00e9es<\/h2>\r\n<h3 data-start=\"6824\" data-end=\"6874\">What is a differential pressure transmitter?<\/h3>\r\n<p data-start=\"6875\" data-end=\"7008\">A device that measures the pressure difference between two points and outputs a standardized signal for industrial control systems.<\/p>\r\n\r\n<h3 data-start=\"7010\" data-end=\"7064\">How is DP transmitter used for flow measurement?<\/h3>\r\n<p data-start=\"7065\" data-end=\"7197\">By measuring the pressure drop across an orifice plate, venturi, or turbine, flow rate can be calculated using standard equations.<\/p>\r\n\r\n<h3 data-start=\"7199\" data-end=\"7246\">Can DP transmitters measure liquid level?<\/h3>\r\n<p data-start=\"7247\" data-end=\"7336\">Yes, by using the pressure difference between the bottom and top of a pressurized tank.<\/p>\r\n\r\n<h3 data-start=\"7338\" data-end=\"7394\">What industries benefit most from DP transmitters?<\/h3>\r\n<p data-start=\"7395\" data-end=\"7491\">Oil &amp; gas, chemical processing, water &amp; wastewater treatment, and power generation facilities.<\/p>\r\n\r\n<h3 data-start=\"7493\" data-end=\"7540\">How do I select the right DP transmitter?<\/h3>\r\n<p data-start=\"7541\" data-end=\"7676\">Consider process pressure, media compatibility, environmental conditions, output signal, accuracy, and hazardous area certifications.<\/p>\r\n\r\n\r\n<hr data-start=\"7678\" data-end=\"7681\" \/>\r\n\r\n<h2 data-start=\"7683\" data-end=\"7696\">Conclusion<\/h2>\r\n<p data-start=\"7698\" data-end=\"8143\">Differential pressure transmitters are critical instruments for industrial process measurement, providing accurate data for flow, level, and filter monitoring. Selecting the right DP transmitter involves understanding process conditions, installation requirements, and signal integration. Proper selection and maintenance ensure safe, efficient, and automated operation across industries such as oil &amp; gas, chemical, and water treatment.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>","protected":false},"excerpt":{"rendered":"<p>Differential Pressure Transmitters | Selection Guide &amp; Industrial Applications Differential pressure (DP) transmitters are essential instruments in modern industrial processes, providing precise measurement of pressure differences across systems. They play a critical role in applications such as flow measurement, level monitoring in pressurized tanks, and process control in oil &amp; gas, chemical, and water treatment&#8230;<\/p>","protected":false},"author":1,"featured_media":30598,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[297],"tags":[332,363,353,361,364,371,362,365,358,373,349,367,366,372,369,370,368],"class_list":["post-30597","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-transmitter","tag-atex","tag-differential-pressure-measurement","tag-differential-pressure-transmitter","tag-differential-pressure-transmitters","tag-dp-level-measurement","tag-dp-transmitter-installation-guide","tag-dp-transmitter-selection","tag-flow-measurement-instruments","tag-iecex","tag-industrial-flow-and-level-measurement","tag-industrial-pressure-transmitter","tag-oil-and-gas-instrumentation","tag-pressure-measurement-in-chemical-plants","tag-pressure-transmitter-comparison","tag-process-automation-instrumentation","tag-smart","tag-water-treatment-pressure-monitoring"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.5 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>differential pressure transmitters - Instrava<\/title>\n<meta name=\"description\" content=\"Learn about differential pressure transmitters: working principles, types, selection criteria, and applications in oil &amp; gas, chemical, and water treatment industries.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/instrava.com\/fr\/differential-pressure-transmitters-selection-applications-and-industrial-guide\/\" \/>\n<meta property=\"og:locale\" content=\"fr_FR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"differential pressure transmitters - Instrava\" \/>\n<meta property=\"og:description\" content=\"Learn about differential pressure transmitters: working principles, types, selection criteria, and applications in oil &amp; gas, chemical, and water treatment industries.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/instrava.com\/fr\/differential-pressure-transmitters-selection-applications-and-industrial-guide\/\" \/>\n<meta property=\"og:site_name\" content=\"Instrava\" \/>\n<meta property=\"article:published_time\" content=\"2026-01-07T06:50:15+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2026-01-22T07:31:59+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/instrava.com\/wp-content\/uploads\/2026\/01\/differential-pressure-transmitters-oil-application.webp\" \/>\n\t<meta property=\"og:image:width\" content=\"1200\" \/>\n\t<meta property=\"og:image:height\" content=\"650\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/webp\" \/>\n<meta name=\"author\" content=\"Instrava\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"\u00c9crit par\" \/>\n\t<meta name=\"twitter:data1\" content=\"Instrava\" \/>\n\t<meta name=\"twitter:label2\" content=\"Dur\u00e9e de lecture estim\u00e9e\" \/>\n\t<meta name=\"twitter:data2\" content=\"5 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\\\/\\\/instrava.com\\\/differential-pressure-transmitters-selection-applications-and-industrial-guide\\\/#article\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/instrava.com\\\/differential-pressure-transmitters-selection-applications-and-industrial-guide\\\/\"},\"author\":{\"name\":\"Instrava\",\"@id\":\"https:\\\/\\\/instrava.com\\\/#\\\/schema\\\/person\\\/5a2cb70825977eb9d0591b5629aa11a6\"},\"headline\":\"Differential Pressure Transmitters: Selection, Applications, and Industrial Guide\",\"datePublished\":\"2026-01-07T06:50:15+00:00\",\"dateModified\":\"2026-01-22T07:31:59+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\\\/\\\/instrava.com\\\/differential-pressure-transmitters-selection-applications-and-industrial-guide\\\/\"},\"wordCount\":938,\"publisher\":{\"@id\":\"https:\\\/\\\/instrava.com\\\/#organization\"},\"image\":{\"@id\":\"https:\\\/\\\/instrava.com\\\/differential-pressure-transmitters-selection-applications-and-industrial-guide\\\/#primaryimage\"},\"thumbnailUrl\":\"https:\\\/\\\/instrava.com\\\/wp-content\\\/uploads\\\/2026\\\/01\\\/differential-pressure-transmitters-oil-application.webp\",\"keywords\":[\"ATEX\",\"differential pressure measurement\",\"differential pressure transmitter\",\"differential pressure transmitters\",\"DP level measurement\",\"DP transmitter installation guide\",\"DP transmitter selection\",\"flow measurement instruments\",\"IECEx\",\"industrial flow and level measurement\",\"industrial pressure transmitter\",\"oil and gas instrumentation\",\"pressure measurement in chemical plants\",\"pressure transmitter comparison\",\"process automation instrumentation\",\"smart\",\"water treatment pressure monitoring\"],\"articleSection\":[\"Transmitter\"],\"inLanguage\":\"fr-FR\"},{\"@type\":\"WebPage\",\"@id\":\"https:\\\/\\\/instrava.com\\\/differential-pressure-transmitters-selection-applications-and-industrial-guide\\\/\",\"url\":\"https:\\\/\\\/instrava.com\\\/differential-pressure-transmitters-selection-applications-and-industrial-guide\\\/\",\"name\":\"differential pressure transmitters - Instrava\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/instrava.com\\\/#website\"},\"primaryImageOfPage\":{\"@id\":\"https:\\\/\\\/instrava.com\\\/differential-pressure-transmitters-selection-applications-and-industrial-guide\\\/#primaryimage\"},\"image\":{\"@id\":\"https:\\\/\\\/instrava.com\\\/differential-pressure-transmitters-selection-applications-and-industrial-guide\\\/#primaryimage\"},\"thumbnailUrl\":\"https:\\\/\\\/instrava.com\\\/wp-content\\\/uploads\\\/2026\\\/01\\\/differential-pressure-transmitters-oil-application.webp\",\"datePublished\":\"2026-01-07T06:50:15+00:00\",\"dateModified\":\"2026-01-22T07:31:59+00:00\",\"description\":\"Learn about differential pressure transmitters: working principles, types, selection criteria, and applications in oil & gas, chemical, and water treatment industries.\",\"breadcrumb\":{\"@id\":\"https:\\\/\\\/instrava.com\\\/differential-pressure-transmitters-selection-applications-and-industrial-guide\\\/#breadcrumb\"},\"inLanguage\":\"fr-FR\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\\\/\\\/instrava.com\\\/differential-pressure-transmitters-selection-applications-and-industrial-guide\\\/\"]}]},{\"@type\":\"ImageObject\",\"inLanguage\":\"fr-FR\",\"@id\":\"https:\\\/\\\/instrava.com\\\/differential-pressure-transmitters-selection-applications-and-industrial-guide\\\/#primaryimage\",\"url\":\"https:\\\/\\\/instrava.com\\\/wp-content\\\/uploads\\\/2026\\\/01\\\/differential-pressure-transmitters-oil-application.webp\",\"contentUrl\":\"https:\\\/\\\/instrava.com\\\/wp-content\\\/uploads\\\/2026\\\/01\\\/differential-pressure-transmitters-oil-application.webp\",\"width\":1200,\"height\":650,\"caption\":\"This image shows differential pressure transmitters used in the oil industry, designed to monitor pressure changes in oil and gas pipelines, ensuring the accuracy of flow measurements.\"},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\\\/\\\/instrava.com\\\/differential-pressure-transmitters-selection-applications-and-industrial-guide\\\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Home\",\"item\":\"https:\\\/\\\/instrava.com\\\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"Transmitter\",\"item\":\"https:\\\/\\\/instrava.com\\\/category\\\/transmitter\\\/\"},{\"@type\":\"ListItem\",\"position\":3,\"name\":\"Differential Pressure Transmitters: Selection, Applications, and Industrial Guide\"}]},{\"@type\":\"WebSite\",\"@id\":\"https:\\\/\\\/instrava.com\\\/#website\",\"url\":\"https:\\\/\\\/instrava.com\\\/\",\"name\":\"instrava.com\",\"description\":\"\",\"publisher\":{\"@id\":\"https:\\\/\\\/instrava.com\\\/#organization\"},\"potentialAction\":[{\"@type\":\"SearchAction\",\"target\":{\"@type\":\"EntryPoint\",\"urlTemplate\":\"https:\\\/\\\/instrava.com\\\/?s={search_term_string}\"},\"query-input\":{\"@type\":\"PropertyValueSpecification\",\"valueRequired\":true,\"valueName\":\"search_term_string\"}}],\"inLanguage\":\"fr-FR\"},{\"@type\":\"Organization\",\"@id\":\"https:\\\/\\\/instrava.com\\\/#organization\",\"name\":\"instrava.com\",\"url\":\"https:\\\/\\\/instrava.com\\\/\",\"logo\":{\"@type\":\"ImageObject\",\"inLanguage\":\"fr-FR\",\"@id\":\"https:\\\/\\\/instrava.com\\\/#\\\/schema\\\/logo\\\/image\\\/\",\"url\":\"https:\\\/\\\/instrava.com\\\/wp-content\\\/uploads\\\/2024\\\/03\\\/in-strava-Instruments-and-meters.png\",\"contentUrl\":\"https:\\\/\\\/instrava.com\\\/wp-content\\\/uploads\\\/2024\\\/03\\\/in-strava-Instruments-and-meters.png\",\"width\":288,\"height\":59,\"caption\":\"instrava.com\"},\"image\":{\"@id\":\"https:\\\/\\\/instrava.com\\\/#\\\/schema\\\/logo\\\/image\\\/\"}},{\"@type\":\"Person\",\"@id\":\"https:\\\/\\\/instrava.com\\\/#\\\/schema\\\/person\\\/5a2cb70825977eb9d0591b5629aa11a6\",\"name\":\"Instrava\",\"sameAs\":[\"https:\\\/\\\/instrava.com\"],\"url\":\"https:\\\/\\\/instrava.com\\\/fr\\\/author\\\/matrinpolergmail-com\\\/\"}]}<\/script>\n<!-- \/ Yoast SEO plugin. -->","yoast_head_json":{"title":"differential pressure transmitters - Instrava","description":"Learn about differential pressure transmitters: working principles, types, selection criteria, and applications in oil & gas, chemical, and water treatment industries.","robots":{"index":"index","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"canonical":"https:\/\/instrava.com\/fr\/differential-pressure-transmitters-selection-applications-and-industrial-guide\/","og_locale":"fr_FR","og_type":"article","og_title":"differential pressure transmitters - Instrava","og_description":"Learn about differential pressure transmitters: working principles, types, selection criteria, and applications in oil & gas, chemical, and water treatment industries.","og_url":"https:\/\/instrava.com\/fr\/differential-pressure-transmitters-selection-applications-and-industrial-guide\/","og_site_name":"Instrava","article_published_time":"2026-01-07T06:50:15+00:00","article_modified_time":"2026-01-22T07:31:59+00:00","og_image":[{"width":1200,"height":650,"url":"https:\/\/instrava.com\/wp-content\/uploads\/2026\/01\/differential-pressure-transmitters-oil-application.webp","type":"image\/webp"}],"author":"Instrava","twitter_card":"summary_large_image","twitter_misc":{"\u00c9crit par":"Instrava","Dur\u00e9e de lecture estim\u00e9e":"5 minutes"},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"Article","@id":"https:\/\/instrava.com\/differential-pressure-transmitters-selection-applications-and-industrial-guide\/#article","isPartOf":{"@id":"https:\/\/instrava.com\/differential-pressure-transmitters-selection-applications-and-industrial-guide\/"},"author":{"name":"Instrava","@id":"https:\/\/instrava.com\/#\/schema\/person\/5a2cb70825977eb9d0591b5629aa11a6"},"headline":"Differential Pressure Transmitters: Selection, Applications, and Industrial Guide","datePublished":"2026-01-07T06:50:15+00:00","dateModified":"2026-01-22T07:31:59+00:00","mainEntityOfPage":{"@id":"https:\/\/instrava.com\/differential-pressure-transmitters-selection-applications-and-industrial-guide\/"},"wordCount":938,"publisher":{"@id":"https:\/\/instrava.com\/#organization"},"image":{"@id":"https:\/\/instrava.com\/differential-pressure-transmitters-selection-applications-and-industrial-guide\/#primaryimage"},"thumbnailUrl":"https:\/\/instrava.com\/wp-content\/uploads\/2026\/01\/differential-pressure-transmitters-oil-application.webp","keywords":["ATEX","differential pressure measurement","differential pressure transmitter","differential pressure transmitters","DP level measurement","DP transmitter installation guide","DP transmitter selection","flow measurement instruments","IECEx","industrial flow and level measurement","industrial pressure transmitter","oil and gas instrumentation","pressure measurement in chemical plants","pressure transmitter comparison","process automation instrumentation","smart","water treatment pressure monitoring"],"articleSection":["Transmitter"],"inLanguage":"fr-FR"},{"@type":"WebPage","@id":"https:\/\/instrava.com\/differential-pressure-transmitters-selection-applications-and-industrial-guide\/","url":"https:\/\/instrava.com\/differential-pressure-transmitters-selection-applications-and-industrial-guide\/","name":"differential pressure transmitters - Instrava","isPartOf":{"@id":"https:\/\/instrava.com\/#website"},"primaryImageOfPage":{"@id":"https:\/\/instrava.com\/differential-pressure-transmitters-selection-applications-and-industrial-guide\/#primaryimage"},"image":{"@id":"https:\/\/instrava.com\/differential-pressure-transmitters-selection-applications-and-industrial-guide\/#primaryimage"},"thumbnailUrl":"https:\/\/instrava.com\/wp-content\/uploads\/2026\/01\/differential-pressure-transmitters-oil-application.webp","datePublished":"2026-01-07T06:50:15+00:00","dateModified":"2026-01-22T07:31:59+00:00","description":"Learn about differential pressure transmitters: working principles, types, selection criteria, and applications in oil & gas, chemical, and water treatment industries.","breadcrumb":{"@id":"https:\/\/instrava.com\/differential-pressure-transmitters-selection-applications-and-industrial-guide\/#breadcrumb"},"inLanguage":"fr-FR","potentialAction":[{"@type":"ReadAction","target":["https:\/\/instrava.com\/differential-pressure-transmitters-selection-applications-and-industrial-guide\/"]}]},{"@type":"ImageObject","inLanguage":"fr-FR","@id":"https:\/\/instrava.com\/differential-pressure-transmitters-selection-applications-and-industrial-guide\/#primaryimage","url":"https:\/\/instrava.com\/wp-content\/uploads\/2026\/01\/differential-pressure-transmitters-oil-application.webp","contentUrl":"https:\/\/instrava.com\/wp-content\/uploads\/2026\/01\/differential-pressure-transmitters-oil-application.webp","width":1200,"height":650,"caption":"This image shows differential pressure transmitters used in the oil industry, designed to monitor pressure changes in oil and gas pipelines, ensuring the accuracy of flow measurements."},{"@type":"BreadcrumbList","@id":"https:\/\/instrava.com\/differential-pressure-transmitters-selection-applications-and-industrial-guide\/#breadcrumb","itemListElement":[{"@type":"ListItem","position":1,"name":"Home","item":"https:\/\/instrava.com\/"},{"@type":"ListItem","position":2,"name":"Transmitter","item":"https:\/\/instrava.com\/category\/transmitter\/"},{"@type":"ListItem","position":3,"name":"Differential Pressure Transmitters: Selection, Applications, and Industrial Guide"}]},{"@type":"WebSite","@id":"https:\/\/instrava.com\/#website","url":"https:\/\/instrava.com\/","name":"instrava.com","description":"","publisher":{"@id":"https:\/\/instrava.com\/#organization"},"potentialAction":[{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https:\/\/instrava.com\/?s={search_term_string}"},"query-input":{"@type":"PropertyValueSpecification","valueRequired":true,"valueName":"search_term_string"}}],"inLanguage":"fr-FR"},{"@type":"Organization","@id":"https:\/\/instrava.com\/#organization","name":"instrava.com","url":"https:\/\/instrava.com\/","logo":{"@type":"ImageObject","inLanguage":"fr-FR","@id":"https:\/\/instrava.com\/#\/schema\/logo\/image\/","url":"https:\/\/instrava.com\/wp-content\/uploads\/2024\/03\/in-strava-Instruments-and-meters.png","contentUrl":"https:\/\/instrava.com\/wp-content\/uploads\/2024\/03\/in-strava-Instruments-and-meters.png","width":288,"height":59,"caption":"instrava.com"},"image":{"@id":"https:\/\/instrava.com\/#\/schema\/logo\/image\/"}},{"@type":"Person","@id":"https:\/\/instrava.com\/#\/schema\/person\/5a2cb70825977eb9d0591b5629aa11a6","name":"Instrava","sameAs":["https:\/\/instrava.com"],"url":"https:\/\/instrava.com\/fr\/author\/matrinpolergmail-com\/"}]}},"_links":{"self":[{"href":"https:\/\/instrava.com\/fr\/wp-json\/wp\/v2\/posts\/30597","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/instrava.com\/fr\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/instrava.com\/fr\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/instrava.com\/fr\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/instrava.com\/fr\/wp-json\/wp\/v2\/comments?post=30597"}],"version-history":[{"count":0,"href":"https:\/\/instrava.com\/fr\/wp-json\/wp\/v2\/posts\/30597\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/instrava.com\/fr\/wp-json\/wp\/v2\/media\/30598"}],"wp:attachment":[{"href":"https:\/\/instrava.com\/fr\/wp-json\/wp\/v2\/media?parent=30597"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/instrava.com\/fr\/wp-json\/wp\/v2\/categories?post=30597"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/instrava.com\/fr\/wp-json\/wp\/v2\/tags?post=30597"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}