{"id":311,"date":"2026-02-17T15:13:38","date_gmt":"2026-02-17T11:43:38","guid":{"rendered":"https:\/\/romantaco.com\/en\/?post_type=product&#038;p=311"},"modified":"2026-02-17T15:13:38","modified_gmt":"2026-02-17T11:43:38","slug":"mdm300-i-s","status":"publish","type":"product","link":"https:\/\/romantaco.com\/en\/product\/mdm300-i-s\/","title":{"rendered":"MDM300 I.S."},"content":{"rendered":"<h3><strong>Measurement Technology<\/strong><\/h3>\n<p>The MDM300 I.S. uses the <strong>Michell Ceramic Metal\u2011Oxide Moisture Sensor<\/strong>, the same advanced sensor technology as the Easidew PRO I.S. This proprietary sensor features a <strong>metallised ceramic structure<\/strong> on a semiconductor-grade ceramic base. The sensor functions as a moisture-sensitive capacitor: the <strong>impedance of the sensor changes in direct response to the partial pressure of water vapor in the gas<\/strong>, which has a direct correlation with dew-point temperature. The transmitter electronics convert these impedance changes into precise dew-point readings.<\/p>\n<p>This technology provides:<\/p>\n<ul>\n<li><strong>High robustness and long-term stability<\/strong> compared to traditional aluminium oxide sensors<\/li>\n<li>Capability to measure <strong>aggressive gases<\/strong>, including sour gas containing H\u2082S, at high pressures without sensor failure<\/li>\n<li><strong>No zero-shift or memory effects<\/strong>, ensuring consistent accuracy over long-term operation<\/li>\n<li>Calibration traceable to <strong>NPL (UK) and NIST (USA)<\/strong> for reliable measurement integrity<\/li>\n<\/ul>\n<h3><strong>Strengths of Michell Ceramic Sensor:<\/strong><\/h3>\n<ul>\n<li>World\u2019s most advanced metal-oxide capacitive\/impedance sensing principle, derived from aluminium-oxide sensors of the 1950s<\/li>\n<li>Metallised ceramic structure with hygroscopic dielectric layer<\/li>\n<li>Impedance varies with moisture partial pressure, calibrated for accurate dew-point measurement across full range<\/li>\n<li>Highly robust and inert; can measure aggressive gases including sour natural gas with up to 30% H\u2082S at pressures up to 300\u202fbarg<\/li>\n<li>Eliminates zero-shift and memory effects common in aluminium-oxide sensors<\/li>\n<li>Long-term stability and calibration traceable to <strong>NPL (UK) and NIST (USA)<\/strong><\/li>\n<li>Fully interchangeable sensors for minimal downtime<\/li>\n<li>Accurate moisture content conversion (ppmV, mg\/m\u00b3, lb\/MMSCF) using optional monitor or dynamic pressure compensation<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<h3><strong>Detailed Technical Specifications:<\/strong><\/h3>\n<ul>\n<li>Sample Gas Flow: 0.2\u20130.5\u202fNl\/min<\/li>\n<li>Display: Blue LCD graphical display<\/li>\n<li>Data Logging: Internal memory (~10,000 readings)<\/li>\n<li>Battery Life: ~24\u202fhours<\/li>\n<li>Dew\u2011Point Range: \u221270\u2026+20\u202f\u00b0C (spot checks), \u2212100\u2026\u221270\u202f\u00b0C (online)<\/li>\n<li>Measurement Units: \u00b0C, \u00b0F, K dew point &amp; gas temperature; ppmV; g\/m\u00b3; %RH; lb\/MMSCF<\/li>\n<li>Ingress Protection: IP66 \/ NEMA 4<\/li>\n<li>Operating Temp.: \u221220\u2026+50\u202f\u00b0C<\/li>\n<li>Weight: ~1.5\u202fkg<\/li>\n<\/ul>\n<h3><strong>Applications:<\/strong><\/h3>\n<ul>\n<li>Dew-point spot-checks in <strong>compressed air systems<\/strong><\/li>\n<li>Moisture monitoring in <strong>natural gas and biogas<\/strong><\/li>\n<li>Verification in <strong>industrial gas networks<\/strong><\/li>\n<li>Use in <strong>hazardous areas requiring intrinsic safety<\/strong><\/li>\n<\/ul>\n","protected":false},"excerpt":{"rendered":"<h3><strong>Product Overview<\/strong><\/h3>\n<p>The MDM300 I.S. is an <strong>intrinsically safe portable dew\u2011point moisture meter<\/strong> designed for <strong>rapid spot-check moisture measurements<\/strong> in gases such as compressed air, natural gas, and biogas, suitable for hazardous areas.<\/p>\n<ul>\n<li>Measurement Range: \u221270 to +20\u202f\u00b0C dew point (spot checks), \u2212100 to \u221270\u202f\u00b0C (online)<\/li>\n<li>Accuracy: \u00b11\u202f\u00b0C (\u221260 to +20\u202f\u00b0C), \u00b12\u202f\u00b0C (\u2212100 to \u221260\u202f\u00b0C)<\/li>\n<li>Resolution: 0.1\u202f\u00b0C dew point<\/li>\n<li>Response Time: T95 \u226430 minutes to \u221260\u202f\u00b0C<\/li>\n<li>Output Units: \u00b0C, \u00b0F, K dew point &amp; gas temperature; %RH; ppmV; g\/m\u00b3; lb\/MMSCF<\/li>\n<li>Calibration: Traceable 13\u2011point certificate<\/li>\n<li>Power: Internal rechargeable NiMH battery (~24\u202fh)<\/li>\n<li>Operating Temp.: \u221220 to +50\u202f\u00b0C<\/li>\n<li>Operating Pressure: Up to 35\u202fMPa (350\u202fbarg)<\/li>\n<li>Ingress Protection: IP66 \/ NEMA 4<\/li>\n<li>Housing Material: Steel fiber\u2011loaded polyamide 6<\/li>\n<li>Certifications: ATEX, IECEx, UKCA, cQPSus, TR\u202fCU Ex<\/li>\n<li>Weight: ~1.5\u202fkg<\/li>\n<\/ul>\n","protected":false},"featured_media":312,"comment_status":"open","ping_status":"closed","template":"","meta":[],"product_brand":[],"product_cat":[19,17],"product_tag":[],"class_list":{"0":"post-311","1":"product","2":"type-product","3":"status-publish","4":"has-post-thumbnail","6":"product_cat-humidity-and-water-dew-point-analyzer","7":"product_cat-process-analyzers","9":"first","10":"instock","11":"shipping-taxable","12":"product-type-simple"},"_links":{"self":[{"href":"https:\/\/romantaco.com\/en\/wp-json\/wp\/v2\/product\/311","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/romantaco.com\/en\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/romantaco.com\/en\/wp-json\/wp\/v2\/types\/product"}],"replies":[{"embeddable":true,"href":"https:\/\/romantaco.com\/en\/wp-json\/wp\/v2\/comments?post=311"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/romantaco.com\/en\/wp-json\/wp\/v2\/media\/312"}],"wp:attachment":[{"href":"https:\/\/romantaco.com\/en\/wp-json\/wp\/v2\/media?parent=311"}],"wp:term":[{"taxonomy":"product_brand","embeddable":true,"href":"https:\/\/romantaco.com\/en\/wp-json\/wp\/v2\/product_brand?post=311"},{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/romantaco.com\/en\/wp-json\/wp\/v2\/product_cat?post=311"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/romantaco.com\/en\/wp-json\/wp\/v2\/product_tag?post=311"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}