{"id":6917,"date":"2026-07-17T16:51:53","date_gmt":"2026-07-17T16:51:53","guid":{"rendered":"https:\/\/europascal.de\/product\/ametek-jofra-ptc-425\/"},"modified":"2026-10-13T10:11:21","modified_gmt":"2026-10-13T10:11:21","slug":"ametek-ptc-425","status":"publish","type":"product","link":"https:\/\/europascal.de\/en\/product\/ametek-ptc-425\/","title":{"rendered":"AMETEK PTC-425 Precise Temperature Calibrator"},"content":{"rendered":"<p>The <strong>AMETEK PTC-425<\/strong> is a professional dry block temperature calibrator designed for accurate, reliable and efficient temperature sensor calibration in industrial environments, calibration laboratories and field service applications.<\/p>\n<p>With a temperature range from <strong>33 \u00b0C to 425 \u00b0C<\/strong>, excellent temperature stability of <strong>\u00b10.02 \u00b0C<\/strong> and an accuracy of <strong>\u00b10.13 \u00b0C when using the specified external reference sensor<\/strong>, the AMETEK PTC-425 provides outstanding performance for demanding temperature calibration applications.<\/p>\n<p>The instrument combines patented heating technology with active dual-zone temperature control to ensure fast temperature changes, excellent temperature homogeneity and reliable calibration conditions.<\/p>\n<p>With a heating time of approximately <strong>10 minutes from 33 \u00b0C to 425 \u00b0C<\/strong>, the AMETEK PTC-425 significantly reduces waiting times during multi-point calibration procedures.<\/p>\n<p>The calibrator is particularly suitable for calibrating resistance temperature detectors (RTDs), Pt100 sensors, thermocouples, temperature transmitters and temperature switches.<\/p>\n<p>Its portable design, interchangeable calibration inserts, color display and USB communication interface make it suitable for both laboratory and field calibration.<\/p>\n<p>The AMETEK PTC-425 is especially useful in pharmaceutical manufacturing, food processing and medical applications where precise temperature monitoring is essential.<\/p>\n<p>Depending on the selected configuration, the instrument also supports external reference thermometer measurement, sensor-under-test measurement and automated calibration functions.<\/p>\n<p>For professional temperature calibration equipment and metrological traceability, visit the <a href=\"https:\/\/europascal.de\/en\/calibration-services\/\">europascal Calibration Service<\/a>.<\/p>\n<h2>Your Benefits at a Glance<\/h2>\n<p>The AMETEK PTC-425 combines high temperature accuracy with efficient operation and flexible measurement capabilities.<\/p>\n<p>Its main advantages include:<\/p>\n<ul>\n<li>Temperature range from 33 \u00b0C to 425 \u00b0C<\/li>\n<li>Internal reference accuracy of \u00b10.20 \u00b0C up to 350 \u00b0C<\/li>\n<li>Internal reference accuracy of \u00b10.25 \u00b0C above 350 \u00b0C<\/li>\n<li>Accuracy of \u00b10.13 \u00b0C with the specified external reference sensor<\/li>\n<li>Excellent temperature stability of \u00b10.02 \u00b0C<\/li>\n<li>Radial temperature homogeneity of 0.02 \u00b0C<\/li>\n<li>Patented heating technology<\/li>\n<li>Active dual-zone temperature control<\/li>\n<li>Heating from 33 \u00b0C to 425 \u00b0C in approximately 10 minutes<\/li>\n<li>Cooling from 425 \u00b0C to 100 \u00b0C in approximately 25 minutes<\/li>\n<li>Interchangeable calibration inserts<\/li>\n<li>Immersion depth of 150 mm<\/li>\n<li>USB communication interface<\/li>\n<li>Automatic temperature stepping<\/li>\n<li>Optional reference thermometer input<\/li>\n<li>Optional sensor-under-test measurement<\/li>\n<li>Optional temperature switch testing<\/li>\n<li>Compatible with JofraCal calibration software<\/li>\n<li>Three configurations: PTC-425A, PTC-425B and PTC-425C<\/li>\n<li>Portable construction weighing approximately 9.2 kg<\/li>\n<\/ul>\n<h2>Temperature Range from 33 \u00b0C to 425 \u00b0C<\/h2>\n<p>The <strong>AMETEK PTC-425<\/strong> provides a temperature calibration range of:<\/p>\n<p><strong>33 \u00b0C to 425 \u00b0C<\/strong><\/p>\n<p>This temperature range covers numerous industrial and laboratory applications requiring accurate temperature measurements at elevated temperatures.<\/p>\n<p>Typical calibration temperatures include:<\/p>\n<ul>\n<li>50 \u00b0C<\/li>\n<li>100 \u00b0C<\/li>\n<li>150 \u00b0C<\/li>\n<li>200 \u00b0C<\/li>\n<li>250 \u00b0C<\/li>\n<li>300 \u00b0C<\/li>\n<li>350 \u00b0C<\/li>\n<li>400 \u00b0C<\/li>\n<li>425 \u00b0C<\/li>\n<\/ul>\n<p>The temperature range is specified at an ambient temperature of 23 \u00b0C.<\/p>\n<p>The AMETEK PTC-425 is particularly suitable for calibrating temperature sensors used in industrial heating systems, pharmaceutical production, food processing and thermal validation procedures.<\/p>\n<p>Its maximum temperature of 425 \u00b0C makes the instrument especially useful for applications requiring higher calibration temperatures than conventional medium-temperature dry block calibrators.<\/p>\n<h2>High Temperature Accuracy<\/h2>\n<p>The AMETEK PTC-425 provides different accuracy specifications depending on the reference thermometer configuration.<\/p>\n<h3>Accuracy with Internal Reference<\/h3>\n<p>When using the internal reference thermometer, the manufacturer specifies:<\/p>\n<table>\n<tbody>\n<tr>\n<th>Temperature Range<\/th>\n<th>Accuracy<\/th>\n<\/tr>\n<tr>\n<td>33 \u00b0C to 350 \u00b0C<\/td>\n<td>\u00b10.20 \u00b0C<\/td>\n<\/tr>\n<tr>\n<td>Above 350 \u00b0C to 425 \u00b0C<\/td>\n<td>\u00b10.25 \u00b0C<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>These specifications describe the accuracy of the internal temperature reference under defined operating conditions.<\/p>\n<h3>Accuracy with External Reference<\/h3>\n<p>When using the specified external STS-150 reference sensor, the manufacturer specifies:<\/p>\n<p><strong>\u00b10.13 \u00b0C<\/strong><\/p>\n<p>This specification applies to the PTC-425B and PTC-425C configurations.<\/p>\n<p>The external reference thermometer measures the temperature directly within the calibration insert.<\/p>\n<p>This allows more accurate comparison calibrations than relying exclusively on the internal temperature indication.<\/p>\n<p>The manufacturer&#8217;s accuracy specifications apply over a 12-month period under defined conditions.<\/p>\n<p>They must not be confused with the expanded measurement uncertainty stated on an individual calibration certificate.<\/p>\n<h2>Excellent Temperature Stability of \u00b10.02 \u00b0C<\/h2>\n<p>The AMETEK PTC-425 provides excellent temperature stability.<\/p>\n<p>The manufacturer specifies:<\/p>\n<p><strong>\u00b10.02 \u00b0C<\/strong><\/p>\n<p>Temperature stability describes the variation of the calibration block temperature over time under defined operating conditions.<\/p>\n<p>The manufacturer evaluates stability after the stability indicator has been active for 10 minutes, followed by a 30-minute measurement period.<\/p>\n<p>Excellent temperature stability is particularly important when calibrating precision resistance thermometers and industrial temperature sensors.<\/p>\n<p>Stable temperature conditions help minimize measurement variations during comparison measurements.<\/p>\n<h2>Active Dual-Zone Temperature Control<\/h2>\n<p>The AMETEK PTC-425 features active dual-zone temperature control.<\/p>\n<p>This technology uses two independently controlled heating zones.<\/p>\n<p>The lower zone provides precise temperature control in the calibration area.<\/p>\n<p>The upper zone compensates for heat losses caused by the open top of the calibration block and the inserted temperature sensors.<\/p>\n<p>This design improves temperature homogeneity and reduces axial temperature gradients.<\/p>\n<p>It is particularly useful when calibrating temperature sensors with different dimensions, immersion<\/p>\n<p><a class=\"download-datasheet\" href=\"#\" data-pdf=\"https:\/\/europascal.de\/wp-content\/uploads\/2026\/07\/Ametek-PTC-155-350-425-660-Professional-Temperatur-Calibrator.pdf\"> <span style=\"color: #0000ff;\"><strong><em>Download Datasheet<\/em><\/strong><\/span> <\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>The <strong>AMETEK PTC-425<\/strong> is a professional dry block temperature calibrator with a range from <strong>33 \u00b0C to 425 \u00b0C<\/strong>. Featuring fast heating, temperature stability of <strong>\u00b10.02 \u00b0C<\/strong> and accuracy of <strong>\u00b10.13 \u00b0C with an external reference sensor<\/strong>, it delivers reliable performance for precision temperature calibration.\u00a0Ideal for calibrating RTDs, thermocouples and temperature transmitters in laboratories, pharmaceutical manufacturing and industrial applications.<\/p>\n","protected":false},"featured_media":3441,"template":"","meta":{"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","ast-disable-related-posts":"","theme-transparent-header-meta":"default","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"set","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center 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