{"id":6971,"date":"2026-07-17T16:53:01","date_gmt":"2026-07-17T16:53:01","guid":{"rendered":"https:\/\/europascal.de\/product\/ametek-ctc-650b\/"},"modified":"2026-10-14T09:54:31","modified_gmt":"2026-10-14T09:54:31","slug":"ametek-ctc-650b","status":"publish","type":"product","link":"https:\/\/europascal.de\/en\/product\/ametek-ctc-650b\/","title":{"rendered":"AMETEK CTC-650B Compact Temperature Calibrator"},"content":{"rendered":"<p>The <strong>AMETEK CTC-650B<\/strong> is a compact dry block temperature calibrator designed for accurate, efficient and reliable temperature sensor calibration in industrial environments, calibration laboratories and field service applications.<\/p>\n<p>With a temperature range from <strong>33 \u00b0C to 650 \u00b0C<\/strong>, an internal reference accuracy of <strong>\u00b10.6 \u00b0C<\/strong> and excellent temperature stability of <strong>\u00b10.05 \u00b0C<\/strong>, the AMETEK CTC-650B provides reliable performance for professional temperature calibration.<\/p>\n<p>The instrument combines a specially designed heating block with advanced temperature regulation and MVI technology to ensure stable calibration conditions, even when the mains power supply fluctuates.<\/p>\n<p>Its immersion depth of <strong>190 mm<\/strong> makes the calibrator particularly suitable for temperature sensors with longer sensing elements, including liquid filled thermometers and mechanical temperature switches.<\/p>\n<p>The AMETEK CTC-650B features interchangeable calibration inserts, automatic temperature stepping, integrated temperature switch testing and an RS-232 communication interface.<\/p>\n<p>With a heating time of approximately <strong>39 minutes from 23 \u00b0C to 650 \u00b0C<\/strong>, the calibrator provides efficient temperature generation for industrial calibration applications.<\/p>\n<p>The compact construction and straightforward operation make the instrument suitable for both laboratory and field calibration.<\/p>\n<p>europascal supports customers with professional temperature calibration equipment, technical advice and calibration services.<\/p>\n<p>For professional calibration 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 CTC-650B combines a wide temperature range with reliable performance and convenient operation.<\/p>\n<p>Its main advantages include:<\/p>\n<ul>\n<li>Temperature range from 33 \u00b0C to 650 \u00b0C<\/li>\n<li>Internal reference accuracy of \u00b10.6 \u00b0C<\/li>\n<li>Excellent temperature stability of \u00b10.05 \u00b0C<\/li>\n<li>Specially designed heating block<\/li>\n<li>MVI technology for improved temperature stability<\/li>\n<li>Immersion depth of 190 mm<\/li>\n<li>Calibration well diameter of 26 mm<\/li>\n<li>Interchangeable calibration inserts<\/li>\n<li>Brass inserts for excellent thermal performance<\/li>\n<li>Heating from 23 \u00b0C to 650 \u00b0C in approximately 39 minutes<\/li>\n<li>Cooling from 650 \u00b0C to 100 \u00b0C in approximately 65 minutes<\/li>\n<li>Typical stabilization time of 8 minutes<\/li>\n<li>Temperature resolution of 0.1 \u00b0C<\/li>\n<li>Automatic temperature stepping with up to nine steps<\/li>\n<li>Integrated temperature switch testing<\/li>\n<li>Automatic determination of switching hysteresis<\/li>\n<li>Adjustable temperature stability criteria<\/li>\n<li>Configurable maximum temperature limit<\/li>\n<li>Backlit LCD display<\/li>\n<li>RS-232 communication interface<\/li>\n<li>Compatible with JofraCal calibration software<\/li>\n<li>Portable construction weighing approximately 10.5 kg<\/li>\n<li>Suitable for RTDs and thermocouples<\/li>\n<li>Suitable for liquid filled thermometers<\/li>\n<li>Suitable for mechanical temperature switches<\/li>\n<li>Professional calibration support from europascal<\/li>\n<\/ul>\n<h2>Ideal for Demanding Calibration Applications<\/h2>\n<p>The <strong>AMETEK CTC-650B<\/strong> is designed for professional temperature calibration applications requiring a wide temperature range and reliable temperature stability.<\/p>\n<p>The instrument is particularly suitable for calibrating industrial temperature sensors operating at elevated temperatures.<\/p>\n<p>Typical applications include:<\/p>\n<ul>\n<li>Pt100 calibration<\/li>\n<li>Pt1000 calibration<\/li>\n<li>RTD calibration<\/li>\n<li>Thermocouple calibration<\/li>\n<li>Digital thermometer verification<\/li>\n<li>Mechanical thermometer calibration<\/li>\n<li>Liquid filled thermometer calibration<\/li>\n<li>Temperature switch testing<\/li>\n<li>Industrial temperature measurement<\/li>\n<li>Process instrumentation maintenance<\/li>\n<li>Production quality assurance<\/li>\n<li>Calibration laboratory applications<\/li>\n<\/ul>\n<p>The dry block design eliminates the need for calibration liquids.<\/p>\n<p>This simplifies transportation, preparation and maintenance compared with conventional liquid calibration baths.<\/p>\n<p>Interchangeable calibration inserts allow different sensor diameters to be accommodated.<\/p>\n<p>The deep calibration well is particularly useful for sensors requiring a relatively large immersion depth.<\/p>\n<h2>Temperature Range up to 650 \u00b0C<\/h2>\n<p>The AMETEK CTC-650B provides a temperature calibration range from:<\/p>\n<p><strong>33 \u00b0C to 650 \u00b0C<\/strong><\/p>\n<p>This wide temperature range covers numerous industrial applications requiring accurate temperature measurements at elevated temperatures.<\/p>\n<p>Typical calibration temperatures include:<\/p>\n<p>50 \u00b0C<\/p>\n<p>100 \u00b0C<\/p>\n<p>150 \u00b0C<\/p>\n<p>200 \u00b0C<\/p>\n<p>250 \u00b0C<\/p>\n<p>300 \u00b0C<\/p>\n<p>400 \u00b0C<\/p>\n<p>500 \u00b0C<\/p>\n<p>600 \u00b0C<\/p>\n<p>650 \u00b0C<\/p>\n<p>The temperature range is specified under the manufacturer&#8217;s defined ambient conditions.<\/p>\n<p>The AMETEK CTC-650B is particularly suitable for calibrating sensors used in industrial heating systems, ovens, production equipment and thermal processes.<\/p>\n<p>Its maximum temperature of 650 \u00b0C allows calibration of temperature sensors operating beyond the range of many conventional compact temperature calibrators.<\/p>\n<p>For demanding calibration applications, sufficient stabilization time must be allowed before recording measurement results.<\/p>\n<h2>Temperature Accuracy of \u00b10.6 \u00b0C<\/h2>\n<p>The manufacturer specifies an internal reference accuracy of:<\/p>\n<p><strong>\u00b10.6 \u00b0C<\/strong><\/p>\n<p>This specification describes the accuracy of the temperature generated and indicated by the calibrator under the manufacturer&#8217;s defined conditions.<\/p>\n<p>It must not be confused with temperature stability.<\/p>\n<p>For more demanding comparison calibrations, a suitable external reference thermometer can be used.<\/p>\n<p>The external reference thermometer measures the actual temperature within the calibration insert.<\/p>\n<p>The device under test can then be compared with the reference thermometer.<\/p>\n<p>The AMETEK CTC-650B does not have an integrated external reference thermometer input.<\/p>\n<p>An appropriate external thermometer readout is therefore required.<\/p>\n<p>The measurement uncertainty of the complete calibration system must be evaluated according to the applicable calibration procedure.<\/p>\n<h2>Excellent Temperature Stability of \u00b10.05 \u00b0C<\/h2>\n<p>The AMETEK CTC-650B provides excellent temperature stability.<\/p>\n<p>The manufacturer specifies:<\/p>\n<p><strong>\u00b10.05 \u00b0C<\/strong><\/p>\n<p>Temperature stability describes the variation of the calibration block temperature over time under defined operating conditions.<\/p>\n<p>According to the manufacturer, the stability specification is evaluated after the stability indicator has been active for ten minutes.<\/p>\n<p>The subsequent measurement period is 30 minutes.<\/p>\n<p>Stable temperature conditions are essential for reliable temperature sensor calibration.<\/p>\n<p>Temperature fluctuations during calibration can influence the measured temperature difference between the reference thermometer and the device under test.<\/p>\n<p>The excellent stability of the AMETEK CTC-650B helps minimize this contribution.<\/p>\n<h2>Specially Designed Heating Block<\/h2>\n<p>The AMETEK CTC-650B features a specially designed heating block.<\/p>\n<p>The heating elements and block geometry are optimized to provide efficient temperature transfer and good temperature homogeneity.<\/p>\n<p>The manufacturer uses a nonlinear heating element design together with an increased block mass.<\/p>\n<p>This helps provide a homogeneous temperature distribution throughout the calibration block.<\/p>\n<p>Good temperature homogeneity is particularly important when calibrating sensors with longer sensing elements.<\/p>\n<p>For accurate calibration, the sensing element should be exposed to a sufficiently uniform temperature.<\/p>\n<p>Temperature gradients can cause measurement errors, particularly when calibrating mechanical or liquid filled thermometers.<\/p>\n<p>The design of the AMETEK CTC-650B helps reduce these effects.<\/p>\n<h2>Immersion Depth of 190 mm<\/h2>\n<p>The AMETEK CTC-650B provides an immersion depth of:<\/p>\n<p><strong>190 mm<\/strong><\/p>\n<p>This relatively deep calibration well is one of the important advantages of the instrument.<\/p>\n<p>The calibration well has a diameter of:<\/p>\n<p><strong>26 mm<\/strong><\/p>\n<p>The increased immersion depth allows temperature sensors with longer sensing elements to be inserted sufficiently far into the calibration block.<\/p>\n<p>This is particularly useful for:<\/p>\n<ul>\n<li>Industrial resistance thermometers<\/li>\n<li>Thermocouples<\/li>\n<li>Liquid filled thermometers<\/li>\n<li>Mechanical temperature indicators<\/li>\n<li>Temperature switches<\/li>\n<\/ul>\n<p>Adequate immersion depth helps reduce errors caused by heat conduction along the sensor stem.<\/p>\n<p>The actual required immersion depth depends on the sensor design, sensing element length and required measurement uncertainty.<\/p>\n<h2>Interchangeable Calibration Inserts<\/h2>\n<p>The AMETEK CTC-650B uses interchangeable calibration inserts.<\/p>\n<p>These allow temperature sensors with different diameters to be calibrated using the same instrument.<\/p>\n<p>The manufacturer specifies the following insert dimensions:<\/p>\n<table>\n<tbody>\n<tr>\n<th>Specification<\/th>\n<th>Value<\/th>\n<\/tr>\n<tr>\n<td>Insert outer diameter<\/td>\n<td>25.7 mm<\/td>\n<\/tr>\n<tr>\n<td>Insert length<\/td>\n<td>200 mm<\/td>\n<\/tr>\n<tr>\n<td>Calibration well diameter<\/td>\n<td>26 mm<\/td>\n<\/tr>\n<tr>\n<td>Immersion depth<\/td>\n<td>190 mm<\/td>\n<\/tr>\n<tr>\n<td>Insert material<\/td>\n<td>Brass<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>Metric inserts are available for sensor diameters from 4 mm to 20 mm.<\/p>\n<p>Imperial inserts are also available.<\/p>\n<p>Undrilled inserts can be used for customized sensor configurations.<\/p>\n<p>The appropriate insert should be selected according to the dimensions of the temperature sensor.<\/p>\n<p>Good thermal contact between the sensor and insert helps minimize temperature differences.<\/p>\n<p>Excessive clearance can increase measurement uncertainty.<\/p>\n<p>For reliable performance, inserts should meet the manufacturer&#8217;s dimensional and material requirements.<\/p>\n<h2>Fast Heating Performance<\/h2>\n<p>The AMETEK CTC-650B provides efficient heating performance.<\/p>\n<p>The manufacturer specifies a typical heating time of:<\/p>\n<p><strong>39 minutes from 23 \u00b0C to 650 \u00b0C<\/strong><\/p>\n<p>This allows the instrument to reach its maximum operating temperature within a relatively short time.<\/p>\n<p>Fast heating is particularly useful when performing calibration procedures involving several temperature points.<\/p>\n<p>Short heating times reduce waiting periods and improve calibration efficiency.<\/p>\n<p>Actual heating performance depends on ambient conditions, sensor loading and the selected calibration insert.<\/p>\n<h2>Efficient Cooling Performance<\/h2>\n<p>The AMETEK CTC-650B also provides controlled cooling performance.<\/p>\n<p>The manufacturer specifies a typical cooling time of:<\/p>\n<p><strong>65 minutes from 650 \u00b0C to 100 \u00b0C<\/strong><\/p>\n<p>This allows calibration procedures to be performed using both increasing and decreasing temperature sequences.<\/p>\n<p>Cooling performance is particularly important when investigating temperature sensor hysteresis.<\/p>\n<p>The actual cooling time depends on the operating conditions and thermal loading of the calibration block.<\/p>\n<h2>Typical Stabilization Time of 8 Minutes<\/h2>\n<p>The AMETEK CTC-650B features a typical stabilization time of:<\/p>\n<p><strong>8 minutes<\/strong><\/p>\n<p>This describes the time required for the calibration block to stabilize under the manufacturer&#8217;s specified conditions.<\/p>\n<p>The instrument features an integrated stability indicator.<\/p>\n<p>The display indicates when the selected temperature stability criteria have been reached.<\/p>\n<p>The stability criteria can be adjusted according to the calibration requirements.<\/p>\n<p>For demanding applications, the temperature stability of the complete calibration system should be verified using an appropriate reference thermometer.<\/p>\n<p>The stabilization time of the device under test must also be considered.<\/p>\n<h2>MVI Technology for Improved Temperature Stability<\/h2>\n<p>The AMETEK CTC-650B features MVI technology.<\/p>\n<p>MVI stands for:<\/p>\n<p><strong>Mains Power Variance Immunity<\/strong><\/p>\n<p>This technology helps maintain stable temperature control when the mains voltage fluctuates.<\/p>\n<p>Industrial environments often contain electrical equipment that causes changes in the power supply.<\/p>\n<p>Examples include large motors, heating systems and machinery.<\/p>\n<p>Voltage fluctuations can influence the performance of<\/p>\n<p><a class=\"download-datasheet\" href=\"#\" data-pdf=\"https:\/\/europascal.de\/wp-content\/uploads\/2026\/07\/Ametek-CTC-320B-650B-Compact-Temperature-Calibrator.pdf\"> <span style=\"color: #0000ff;\"><strong><em>Download Datasheet<\/em><\/strong><\/span><\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>The <strong>AMETEK CTC-650B<\/strong> is a compact dry block temperature calibrator with a range from <strong>33 \u00b0C to 650 \u00b0C<\/strong>. Featuring temperature stability of <strong>\u00b10.05 \u00b0C<\/strong>, a <strong>190 mm immersion depth<\/strong> and interchangeable inserts, it provides reliable performance for industrial temperature calibration.\u00a0With automatic temperature stepping and integrated temperature switch testing, it is ideal for calibrating RTDs, thermocouples and mechanical temperature sensors.<\/p>\n","protected":false},"featured_media":3433,"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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