{"id":6657,"date":"2026-07-17T17:04:14","date_gmt":"2026-07-17T17:04:14","guid":{"rendered":"https:\/\/europascal.de\/product\/fluke-calibration-molstic-s\/"},"modified":"2026-10-01T10:07:10","modified_gmt":"2026-10-01T10:07:10","slug":"fluke-calibration-molstic-s","status":"publish","type":"product","link":"https:\/\/europascal.de\/en\/product\/fluke-calibration-molstic-s\/","title":{"rendered":"Fluke Calibration molstic-S"},"content":{"rendered":"<p><strong>Fluke Calibration molstic-S<\/strong> is a modular flow mounting system designed specifically for Fluke Calibration molbloc-S sonic nozzle mass flow elements. It provides an engineered solution for mounting molbloc-S elements, connecting the gas supply, regulating operating pressure and integrating the device under test into a professional gas flow calibration system.<\/p>\n<p>Rather than being a flow measurement standard itself, the molstic-S provides the mechanical and pneumatic infrastructure required to operate molbloc-S flow elements correctly and efficiently. Combined with a molbloc-S and a compatible molbox flow terminal, the system creates a flexible platform for calibrating mass flow meters, mass flow controllers and other gas flow measurement devices.<\/p>\n<p>The modular design allows the device under test to be positioned either upstream or downstream of the molbloc-S, depending on the operating principle and pressure requirements of the instrument being calibrated.<\/p>\n<p>Fluke Calibration offers the molstic-S in both <strong>1\/4 inch and 1\/2 inch system plumbing sizes<\/strong> as well as Single and Dual configurations. The Dual version allows two molbloc-S elements to remain installed simultaneously, enabling two different flow ranges to be used without changing the flow hardware between tests.<\/p>\n<p>Integrated shut-off and metering valves simplify leak testing and flow adjustment, while optional pressure regulators, back-pressure regulators, high-resolution metering valves and an adjustable DUT stand allow the system to be configured for different calibration applications.<\/p>\n<p>At <strong>europascal<\/strong>, the Fluke Calibration molstic-S complements a comprehensive range of professional flow calibration equipment including molbox flow terminals and molbloc flow elements. 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 <strong>Fluke Calibration molstic-S<\/strong> provides a professional and modular platform for building molbloc-S gas flow calibration systems.<\/p>\n<p>Key advantages include:<\/p>\n<ul>\n<li>Designed specifically for molbloc-S sonic nozzle flow elements<\/li>\n<li>Professional mechanical mounting platform<\/li>\n<li>Integrated pneumatic connections<\/li>\n<li>Single and Dual configurations available<\/li>\n<li>1\/4 inch and 1\/2 inch system plumbing sizes<\/li>\n<li>Allows upstream or downstream DUT positioning<\/li>\n<li>Integrated flow shut-off and metering valves<\/li>\n<li>Supports system leak testing<\/li>\n<li>Optional pressure reducing regulator<\/li>\n<li>Optional back-pressure regulator<\/li>\n<li>Optional high-resolution metering valves<\/li>\n<li>Filter included with the 1\/4 inch version<\/li>\n<li>Protects smaller molbloc-S elements against contamination<\/li>\n<li>Optional adjustable DUT stand<\/li>\n<li>Dual configurations support two molbloc-S ranges<\/li>\n<li>Two molbloc-S outlets can be connected in parallel<\/li>\n<li>Designed for professional calibration laboratories<\/li>\n<li>Optimized for the molbloc\/molbox calibration system<\/li>\n<\/ul>\n<h2>Designed for molbloc-S Sonic Nozzle Flow Elements<\/h2>\n<p>The <strong>Fluke Calibration molstic-S<\/strong> has been developed specifically for the molbloc-S family of sonic nozzle mass flow elements.<\/p>\n<p>A complete calibration configuration can consist of:<\/p>\n<p><strong>Gas Supply + molstic-S + molbloc-S + molbox Flow Terminal + Device Under Test<\/strong><\/p>\n<p>The individual components perform different functions.<\/p>\n<p>The <strong>molbloc-S<\/strong> is the characterized sonic nozzle flow element.<\/p>\n<p>The <strong>molbox<\/strong> measures the required pressure and temperature parameters and calculates the reference mass flow.<\/p>\n<p>The <strong>molstic-S<\/strong> provides the mechanical mounting, pneumatic connections and flow system components required to integrate the molbloc-S and the device under test.<\/p>\n<p>This clear separation makes the molbloc\/molbox platform highly modular.<\/p>\n<h2>Single and Dual Configurations<\/h2>\n<p>The <strong>Fluke Calibration molstic-S<\/strong> is available in Single and Dual configurations.<\/p>\n<p>The:<\/p>\n<p><strong>molstic-S Single<\/strong><\/p>\n<p>accommodates one molbloc-S flow element.<\/p>\n<p>This configuration is suitable when one flow range is required or when molbloc elements are changed manually for different calibration tasks.<\/p>\n<p>The:<\/p>\n<p><strong>molstic-S Dual<\/strong><\/p>\n<p>allows two molbloc-S flow elements to be mounted simultaneously.<\/p>\n<p>This provides an important practical advantage for laboratories working across multiple flow ranges.<\/p>\n<p>Two molbloc-S elements with different nominal flow ranges can remain installed on the platform, allowing the operator to switch between ranges without physically replacing the reference flow element.<\/p>\n<h2>Dual molbloc-S Operation<\/h2>\n<p>The Dual molstic-S can accommodate two molbloc-S elements at the same time.<\/p>\n<p>This allows:<\/p>\n<p><strong>two different flow ranges<\/strong><\/p>\n<p>to be available within the same calibration setup.<\/p>\n<p>In suitable configurations, the outlets of the two molbloc-S elements can also be connected in parallel using a downstream tee assembly.<\/p>\n<p>This enables additional flow capacity when used with an appropriate two-channel molbox system.<\/p>\n<p>The Dual configuration can therefore improve both range coverage and laboratory productivity.<\/p>\n<h2>1\/4 Inch molstic-S<\/h2>\n<p>The <strong>1\/4 inch molstic-S<\/strong> is intended for the smaller molbloc-S flow elements.<\/p>\n<p>Fluke specifies it for:<\/p>\n<p><strong>molbloc-S 1E2-S and lower<\/strong>.<\/p>\n<p>The 1\/4 inch system is therefore particularly suitable for lower and medium flow applications.<\/p>\n<p>A filter is integrated into the 1\/4 inch molstic-S to help protect the smaller molbloc-S elements against contamination.<\/p>\n<p>This is particularly important because contamination of a precision sonic nozzle can affect its metrological characteristics.<\/p>\n<h2>1\/2 Inch molstic-S<\/h2>\n<p>The <strong>1\/2 inch molstic-S<\/strong> is intended for higher-flow molbloc-S elements.<\/p>\n<p>Fluke specifies this version for:<\/p>\n<p><strong>molbloc-S 2E2-S through 2E3-S<\/strong>.<\/p>\n<p>The larger plumbing diameter reduces unwanted pressure losses at higher gas flow rates.<\/p>\n<p>Both Single and Dual versions are available with 1\/2 inch plumbing.<\/p>\n<p>The appropriate molstic-S configuration should therefore be selected according to the molbloc-S elements and flow ranges used in the calibration system.<\/p>\n<h2>Integrated Shut-Off and Metering Valves<\/h2>\n<p>All <strong>Fluke Calibration molstic-S<\/strong> platforms include integrated flow shut-off and metering valves.<\/p>\n<p>These valves provide important practical functions during calibration.<\/p>\n<p>They can be used for:<\/p>\n<ul>\n<li>Isolating sections of the flow system<\/li>\n<li>Performing system leak tests<\/li>\n<li>Starting and stopping gas flow<\/li>\n<li>Adjusting flow where required by the DUT configuration<\/li>\n<li>Preparing the system for component changes<\/li>\n<\/ul>\n<p>The integrated valve arrangement reduces the need to assemble a calibration system from individual third-party pneumatic components.<\/p>\n<h2>High-Resolution Metering Valve Option<\/h2>\n<p>For applications requiring particularly fine flow adjustment, Fluke offers optional high-resolution metering valve kits for the:<\/p>\n<p><strong>1\/4 inch molstic-S<\/strong>.<\/p>\n<p>These valves provide finer flow control than the standard metering arrangement.<\/p>\n<p>This can be useful when calibrating instruments at specific flow points or when the device under test requires precise manual flow adjustment.<\/p>\n<h2>Upstream and Downstream DUT Positioning<\/h2>\n<p>One of the most important advantages of the <strong>Fluke Calibration molstic-S<\/strong> is its modular layout.<\/p>\n<p>The device under test can be installed:<\/p>\n<p><strong>upstream of the molbloc-S<\/strong><\/p>\n<p>or:<\/p>\n<p><strong>downstream of the molbloc-S<\/strong>.<\/p>\n<p>The correct arrangement depends on the type of device being calibrated and its operating pressure requirements.<\/p>\n<p>This flexibility is particularly useful because sonic nozzle calibration systems have different pneumatic requirements depending on whether the device under test controls the flow or simply measures it.<\/p>\n<h2>DUTs with Flow Control<\/h2>\n<p>The molbloc-S operates in the critical-flow regime.<\/p>\n<p>For a device under test that has its own flow control capability, Fluke specifies that the DUT must be installed:<\/p>\n<p><strong>upstream of the molbloc-S<\/strong>.<\/p>\n<p>Examples can include certain mass flow controllers and other active flow-control devices.<\/p>\n<p>In this arrangement, the DUT controls the gas flow while the molbloc-S provides the reference flow measurement.<\/p>\n<p>The molstic-S modular plumbing concept supports this upstream configuration.<\/p>\n<h2>DUTs Operating at Atmospheric Pressure<\/h2>\n<p>Devices intended to be calibrated at atmospheric pressure are generally installed:<\/p>\n<p><strong>downstream of the molbloc-S<\/strong>.<\/p>\n<p>In this arrangement, the gas first passes through the molbloc-S sonic nozzle and then through the device under test.<\/p>\n<p>The molstic-S can be equipped with the appropriate pressure regulation components to support this configuration.<\/p>\n<p>The ability to configure the DUT either upstream or downstream significantly increases the versatility of the calibration platform.<\/p>\n<h2>Pressure Regulation<\/h2>\n<p>Correct inlet pressure regulation is extremely important in a molbloc\/molbox calibration system.<\/p>\n<p>The pressure transducers inside the molbox must be protected against excessive pressure.<\/p>\n<p>For this reason, Fluke offers pressure regulation options for the molstic-S.<\/p>\n<p>A pressure reducing regulator can be installed when calibrating devices that operate at atmospheric pressure.<\/p>\n<p>This provides controlled supply pressure to the molbloc-S and helps maintain the required operating conditions.<\/p>\n<h2>Supply Only molstic-S<\/h2>\n<p>Fluke also offers a:<\/p>\n<p><strong>molstic-S Supply Only<\/strong><\/p>\n<p>configuration.<\/p>\n<p>This version acts as an upstream gas supply regulation platform.<\/p>\n<p>It is available in:<\/p>\n<p><strong>1\/4 inch<\/strong><\/p>\n<p>and:<\/p>\n<p><strong>1\/2 inch<\/strong><\/p>\n<p>versions.<\/p>\n<p>Fluke recommends the Supply Only configuration upstream of devices that have their own flow control capability.<\/p>\n<p>This provides a controlled gas supply while protecting the pressure measurement components of the calibration system.<\/p>\n<h2>Optional Back-Pressure Regulator<\/h2>\n<p>An optional back-pressure regulator can be installed on the <strong>Fluke Calibration molstic-S<\/strong>.<\/p>\n<p>The back-pressure regulator can be used to control the downstream pressure of a device under test positioned upstream of the molbloc-S.<\/p>\n<p>This is particularly useful when the DUT requires a defined outlet pressure for correct operation or calibration.<\/p>\n<p>The modular regulator options therefore allow the molstic-S to be adapted to different pneumatic calibration requirements.<\/p>\n<h2>Protection Against Contamination<\/h2>\n<p>Clean gas is essential for maintaining the metrological performance of precision flow standards.<\/p>\n<p>The <strong>1\/4 inch molstic-S<\/strong> includes a filter specifically designed to protect the smaller molbloc-S elements from contamination.<\/p>\n<p>Particles entering the sonic nozzle could alter its effective geometry and therefore influence its flow characteristics.<\/p>\n<p>The integrated filter helps protect the reference element and supports long-term stability.<\/p>\n<p>Appropriate clean and dry calibration gas should nevertheless always be used.<\/p>\n<h2>Optional Adjustable DUT Stand<\/h2>\n<p>Large devices under test may not fit directly on the standard molstic-S platform.<\/p>\n<p>For these applications, Fluke offers an optional:<\/p>\n<p><strong>Adjustable DUT Stand<\/strong><\/p>\n<p>with part number:<\/p>\n<p><strong>401934<\/strong>.<\/p>\n<p>The stand provides mechanical support for larger DUTs while maintaining an appropriate connection to the molstic-S flow system.<\/p>\n<p>This is particularly useful for larger mass flow meters and other instruments with substantial housings or unusual connection positions.<\/p>\n<h2>Compact Modular Construction<\/h2>\n<p>The molstic-S integrates high-quality pneumatic components into a compact mounting platform.<\/p>\n<p>A typical Single molstic-S has an overall platform length of approximately:<\/p>\n<p><strong>590 mm \/ 23 inches<\/strong>.<\/p>\n<p>The basic platform height is approximately:<\/p>\n<p><strong>103.5 mm \/ 4 inches<\/strong>.<\/p>\n<p>Its modular design helps create a cleaner and more reproducible calibration setup than assembling the system from separate tubing, valves, filters and mounting hardware.<\/p>\n<p>This is particularly valuable in professional calibration laboratories where repeatable system configuration is important.<\/p>\n<h2>molstic-S with molbloc-S<\/h2>\n<p>The <strong>Fluke Calibration molstic-S<\/strong> and molbloc-S perform complementary functions.<\/p>\n<p>The:<\/p>\n<p><strong>molbloc-S<\/strong><\/p>\n<p>is the actual precision sonic nozzle mass flow element.<\/p>\n<p>The:<\/p>\n<p><strong>molstic-S<\/strong><\/p>\n<p>is the mounting and pneumatic system.<\/p>\n<p>The molstic-S does not independently measure gas flow.<\/p>\n<p>Instead, it ensures that the molbloc-S can be installed and operated in a controlled and practical calibration configuration.<\/p>\n<p>The complete system then uses a compatible molbox terminal to determine and display the reference gas mass flow.<\/p>\n<h2>molstic-S with molbox<\/h2>\n<p>A complete professional flow calibration system can combine:<\/p>\n<p><strong>molstic-S + molbloc-S + molbox<\/strong><\/p>\n<p>The molstic-S handles:<\/p>\n<ul>\n<li>Mechanical mounting<\/li>\n<li>Gas connections<\/li>\n<li>Isolation<\/li>\n<li>Flow adjustment<\/li>\n<li>Pressure regulation options<\/li>\n<li>DUT integration<\/li>\n<\/ul>\n<p>The molbloc-S provides:<\/p>\n<ul>\n<li>Precision sonic nozzle<\/li>\n<li>Characterized flow element<\/li>\n<li>Reference flow characteristics<\/li>\n<\/ul>\n<p>The molbox provides:<\/p>\n<ul>\n<li>Pressure measurement<\/li>\n<li>Temperature measurement<\/li>\n<li>Flow calculation<\/li>\n<li>Reference flow indication<\/li>\n<li>System communication<\/li>\n<\/ul>\n<p>Together, these components form a modular gas flow calibration platform.<\/p>\n<h2>Critical Flow Considerations<\/h2>\n<p>The <strong>molbloc-S<\/strong> mounted on the molstic-S operates according to the critical-flow or choked-flow principle.<\/p>\n<p>When the required pressure ratio is reached, the gas reaches sonic velocity at the nozzle throat.<\/p>\n<p>Under these conditions, mass flow is primarily determined by:<\/p>\n<ul>\n<li>Upstream absolute pressure<\/li>\n<li>Gas temperature<\/li>\n<li>Sonic nozzle geometry<\/li>\n<li>Gas properties<\/li>\n<\/ul>\n<p>The downstream pressure must remain sufficiently low relative to upstream pressure to maintain critical-flow conditions.<\/p>\n<p>The molstic-S helps create the required pneumatic configuration while providing the flexibility needed for different DUT arrangements.<\/p>\n<h2>Calibration of Mass Flow Controllers<\/h2>\n<p>The <strong>Fluke Calibration molstic-S<\/strong> is particularly useful for building calibration systems for mass flow controllers.<\/p>\n<p>For an MFC that controls its own flow, the typical arrangement places the MFC:<\/p>\n<p><strong>upstream of the molbloc-S<\/strong>.<\/p>\n<p>A controlled gas supply feeds the MFC.<\/p>\n<p>The molbloc-S then provides the reference flow downstream of the MFC.<\/p>\n<p>Depending on the application, the molstic-S Supply Only platform and optional back-pressure regulation can be used to establish the required pressure conditions.<\/p>\n<h2>Calibration of Flow Meters<\/h2>\n<p>For passive flow measurement devices, the device under test can often be positioned downstream of the molbloc-S.<\/p>\n<p>Typical DUTs can include:<\/p>\n<ul>\n<li>Mass flow meters<\/li>\n<li>Thermal flow meters<\/li>\n<li>Variable-area flow meters<\/li>\n<li>Rotameters<\/li>\n<li>Process gas flow meters<\/li>\n<li>Gas flow sensors<\/li>\n<\/ul>\n<p>The exact configuration depends on the pressure requirements and pressure drop of the DUT.<\/p>\n<p>The modular molstic-S concept makes it easier to adapt the system to these different applications.<\/p>\n<h2>Single vs. Dual molstic-S<\/h2>\n<p>The correct <strong>Fluke Calibration molstic-S<\/strong> configuration depends primarily on the required number of flow ranges.<\/p>\n<p>A <strong>Single molstic-S<\/strong> is suitable when:<\/p>\n<ul>\n<li>One molbloc-S is normally used<\/li>\n<li>Flow ranges are changed infrequently<\/li>\n<li>A compact configuration is preferred<\/li>\n<\/ul>\n<p>A <strong>Dual molstic-S<\/strong> is particularly useful when:<\/p>\n<ul>\n<li>Two flow ranges are frequently required<\/li>\n<li>Calibration throughput is important<\/li>\n<li>Hardware changes should be minimized<\/li>\n<li>Two molbloc-S elements need to remain permanently installed<\/li>\n<\/ul>\n<p>The Dual configuration can therefore significantly improve workflow efficiency in a calibration laboratory.<\/p>\n<h2>Technical Highlights<\/h2>\n<table>\n<tbody>\n<tr>\n<th>Feature<\/th>\n<th>Fluke Calibration molstic-S<\/th>\n<\/tr>\n<tr>\n<td>Device type<\/td>\n<td>Mounting system for molbloc-S<\/td>\n<\/tr>\n<tr>\n<td>Application<\/td>\n<td>Gas flow calibration<\/td>\n<\/tr>\n<tr>\n<td>Reference element<\/td>\n<td>molbloc-S sonic nozzle<\/td>\n<\/tr>\n<tr>\n<td>Configurations<\/td>\n<td>Single \/ Dual<\/td>\n<\/tr>\n<tr>\n<td>Plumbing sizes<\/td>\n<td>1\/4 inch \/ 1\/2 inch<\/td>\n<\/tr>\n<tr>\n<td>1\/4 inch compatibility<\/td>\n<td>molbloc-S 1E2-S and lower<\/td>\n<\/tr>\n<tr>\n<td>1\/2 inch compatibility<\/td>\n<td>molbloc-S 2E2-S through 2E3-S<\/td>\n<\/tr>\n<tr>\n<td>Integrated valves<\/td>\n<td>Shut-off \/ metering<\/td>\n<\/tr>\n<tr>\n<td>Leak testing<\/td>\n<td>Supported<\/td>\n<\/tr>\n<tr>\n<td>Integrated filter<\/td>\n<td>1\/4 inch version<\/td>\n<\/tr>\n<tr>\n<td>Pressure regulator<\/td>\n<td>Optional<\/td>\n<\/tr>\n<tr>\n<td>Back-pressure regulator<\/td>\n<td>Optional<\/td>\n<\/tr>\n<tr>\n<td>High-resolution metering valve<\/td>\n<td>Optional for 1\/4 inch<\/td>\n<\/tr>\n<tr>\n<td>DUT position<\/td>\n<td>Upstream or downstream<\/td>\n<\/tr>\n<tr>\n<td>Adjustable DUT stand<\/td>\n<td>Optional<\/td>\n<\/tr>\n<tr>\n<td>Single platform length<\/td>\n<td>Approx. 590 mm<\/td>\n<\/tr>\n<tr>\n<td>Automation<\/td>\n<td>Suitable for automated molbloc\/molbox systems<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h2>Available molstic-S Configurations<\/h2>\n<p>Fluke Calibration offers several molstic-S configurations to match different flow calibration requirements.<\/p>\n<p>These include:<\/p>\n<p><strong>molstic-S Single 1\/4 inch<\/strong><\/p>\n<p>For one molbloc-S, 1E2-S and lower.<\/p>\n<p><strong>molstic-S Single 1\/2 inch<\/strong><\/p>\n<p>For one molbloc-S, 2E2-S through 2E3-S.<\/p>\n<p><strong>molstic-S Dual 1\/4 inch<\/strong><\/p>\n<p>For two molbloc-S elements, 1E2-S and lower.<\/p>\n<p><strong>molstic-S Dual 1\/2 inch<\/strong><\/p>\n<p>For two molbloc-S elements, 2E2-S through 2E3-S.<\/p>\n<p><strong>molstic-S Supply Only 1\/4 inch<\/strong><\/p>\n<p>Upstream regulation platform with 1\/4 inch plumbing.<\/p>\n<p><strong>molstic-S Supply Only 1\/2 inch<\/strong><\/p>\n<p>Upstream regulation platform with 1\/2 inch plumbing.<\/p>\n<p>Optional pressure reducing regulators and back-pressure regulators are available for both plumbing sizes.<\/p>\n<h2>molstic-S vs. molbloc-S<\/h2>\n<p>The distinction between the two products is important.<\/p>\n<p><strong>Fluke Calibration molstic-S = Mounting and pneumatic system<\/strong><\/p>\n<p><strong>Fluke Calibration molbloc-S = Sonic nozzle mass flow element<\/strong><\/p>\n<p>The molstic-S itself is therefore not a flow reference or flow meter.<\/p>\n<p>Its purpose is to provide a professionally engineered platform on which the molbloc-S and the device under test can be operated under suitable pneumatic conditions.<\/p>\n<h2>molstic-S vs. molstic-L<\/h2>\n<p>The <strong>molstic-S<\/strong> is designed for:<\/p>\n<p><strong>molbloc-S sonic nozzle flow elements<\/strong>.<\/p>\n<p>The <strong>molstic-L<\/strong> is designed for:<\/p>\n<p><strong>molbloc-L laminar flow elements<\/strong>.<\/p>\n<p>The different mounting systems reflect the different operating principles and pneumatic requirements of the two molbloc technologies.<\/p>\n<p>For a calibration laboratory using both molbloc-L and molbloc-S standards, the corresponding molstic platforms provide a structured and modular approach to system construction.<\/p>\n<h2>Typical Applications<\/h2>\n<p>The <strong>Fluke Calibration molstic-S<\/strong> is suitable for building systems for:<\/p>\n<ul>\n<li>Gas mass flow calibration<\/li>\n<li>Mass flow controller calibration<\/li>\n<li>Mass flow meter calibration<\/li>\n<li>Sonic nozzle flow calibration<\/li>\n<li>Rotameter calibration<\/li>\n<li>Variable-area flow meter calibration<\/li>\n<li>Thermal mass flow meter calibration<\/li>\n<li>Process flow meter calibration<\/li>\n<li>Gas flow sensor calibration<\/li>\n<li>Calibration laboratory applications<\/li>\n<li>Industrial flow metrology<\/li>\n<li>Research and development<\/li>\n<li>Automated gas flow calibration<\/li>\n<\/ul>\n<h2>Why Choose the Fluke Calibration molstic-S?<\/h2>\n<p>The <strong>Fluke Calibration molstic-S<\/strong> provides a professionally engineered mechanical and pneumatic platform for molbloc-S sonic nozzle mass flow elements.<\/p>\n<p>Rather than assembling a flow calibration system from individual valves, fittings, filters, tubing and mounting components, the molstic-S integrates the key elements into a compact modular platform designed specifically for the molbloc\/molbox system.<\/p>\n<p>Single and Dual configurations allow one or two molbloc-S elements to be permanently installed.<\/p>\n<p>The 1\/4 inch version supports molbloc-S elements 1E2-S and lower, while the 1\/2 inch version supports elements from 2E2-S through 2E3-S.<\/p>\n<p>Integrated shut-off and metering valves simplify system isolation, leak testing and flow adjustment. Optional pressure reducing regulators, back-pressure regulators and high-resolution metering valves allow the system to be optimized for different DUT configurations.<\/p>\n<p>The modular design also enables the device under test to be positioned upstream or downstream of the molbloc-S depending on its operating principle and pressure requirements.<\/p>\n<p>Combined with a <strong>Fluke Calibration molbloc-S<\/strong> and compatible <strong>molbox flow terminal<\/strong>, the molstic-S forms an important part of a flexible and professional gas mass flow calibration system.<\/p>\n<p>At <strong>europascal<\/strong>, we provide Fluke Calibration flow, pressure, temperature and electrical calibration technology for professional laboratory and industrial applications.<\/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<p>Further products from <strong>Fluke Calibration<\/strong> are available from europascal.<\/p>\n<p>Manufacturer information about the <strong>Fluke Calibration molstic-S<\/strong> is available on the official Fluke Calibration website.<\/p>\n<p><a class=\"download-datasheet\" href=\"#\" data-pdf=\"https:\/\/europascal.de\/wp-content\/uploads\/2026\/07\/Fluke-molstic-S-Mounting-System-for-molbloc-S-Mass-Flow-Elements.pdf\"><span style=\"color: #0000ff;\"><strong><em>Download Datasheet<\/em><\/strong><\/span><\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>The <strong>Fluke Calibration molstic-S<\/strong> is a modular mounting and pneumatic system for professional use with molbloc-S sonic nozzle mass flow elements. Available in Single and Dual configurations with 1\/4 inch or 1\/2 inch plumbing, it provides integrated shut-off and metering valves, flexible upstream or downstream DUT positioning and optional pressure regulation for professional gas flow calibration 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