{"id":6374,"date":"2026-07-17T15:49:52","date_gmt":"2026-07-17T15:49:52","guid":{"rendered":"https:\/\/europascal.de\/product\/additel-adt-681a\/"},"modified":"2026-09-22T11:57:03","modified_gmt":"2026-09-22T11:57:03","slug":"additel-adt-681a","status":"publish","type":"product","link":"https:\/\/europascal.de\/en\/product\/additel-adt-681a\/","title":{"rendered":"Additel ADT 681A Precise Digital Pressure Gauge"},"content":{"rendered":"<p class=\"isSelectedEnd\"><strong>Additel ADT 681A<\/strong> is a high-precision digital pressure gauge designed for professional pressure measurement and demanding calibration applications. The instrument combines high accuracy with advanced data logging, wireless communication and a robust design for both laboratory and field use.<\/p>\n<p class=\"isSelectedEnd\">The ADT 681A series was developed by Additel for applications where the accuracy and functionality of a conventional industrial pressure gauge are no longer sufficient. Pressure ranges up to <strong>60,000 psi \/ 4,200 bar<\/strong> enable applications from low-pressure measurement to demanding high-pressure calibration.<\/p>\n<p class=\"isSelectedEnd\">Depending on the configuration, several accuracy classes are available. The <strong>Additel ADT 681A<\/strong> can be specified with <strong>0.01 % FS, 0.02 % FS or 0.05 % FS<\/strong> accuracy. A reading-based version is also available, providing <strong>0.02 % FS from 0 to 20 % of the measurement range<\/strong> and <strong>0.1 % of reading above 20 % of the measurement range<\/strong>.<\/p>\n<p class=\"isSelectedEnd\">This high level of measurement performance makes the ADT 681A particularly suitable for comparison measurements, measuring equipment monitoring, reference measurements and professional pressure calibration.<\/p>\n<p class=\"isSelectedEnd\">An integrated data logger further extends its capabilities. Up to <strong>10 million measurement records<\/strong> can be stored. Bluetooth communication also enables connection to mobile devices and the Additel Link Mobile App.<\/p>\n<p class=\"isSelectedEnd\">At <strong>europascal<\/strong>, you receive professional solutions for pressure measurement and pressure calibration. For regular calibration and metrological traceability of your ADT 681A and other pressure measuring instruments, europascal also provides a professional <a href=\"https:\/\/europascal.de\/en\/calibration-services\/\">Calibration Service<\/a>.<\/p>\n<h2>Your Benefits at a Glance<\/h2>\n<ul data-spread=\"false\">\n<li>High-precision digital pressure gauge<\/li>\n<li>Pressure ranges up to 4,200 bar<\/li>\n<li>Maximum pressure range up to 60,000 psi<\/li>\n<li>Accuracy down to 0.01 % FS<\/li>\n<li>0.02 % FS accuracy class available<\/li>\n<li>0.05 % FS accuracy class available<\/li>\n<li>Reading-based accuracy down to 0.1 % of reading<\/li>\n<li>Gauge pressure measurement<\/li>\n<li>Compound pressure measurement<\/li>\n<li>Absolute pressure indication with optional barometer<\/li>\n<li>Differential-pressure ranges available<\/li>\n<li>Optional integrated barometer<\/li>\n<li>Barometer accuracy \u00b155 Pa<\/li>\n<li>Full temperature compensation<\/li>\n<li>Temperature compensation from \u221210 \u00b0C to 50 \u00b0C<\/li>\n<li>Integrated data logger<\/li>\n<li>Storage for up to 10,000,000 measurement records<\/li>\n<li>Bluetooth communication<\/li>\n<li>Additel Link Mobile App connectivity<\/li>\n<li>Large, easy-to-read display<\/li>\n<li>Percentage-of-range indication<\/li>\n<li>Graphical pressure indication<\/li>\n<li>Minimum and maximum display<\/li>\n<li>TARE function<\/li>\n<li>Leak test function<\/li>\n<li>Ambient pressure and temperature display<\/li>\n<li>Adjustable measurement rate<\/li>\n<li>IP67 protection<\/li>\n<li>Robust construction for laboratory and field use<\/li>\n<li>Intrinsically safe ADT 681AEx version available<\/li>\n<li>ISO\/IEC 17025 accredited calibration with calibration data according to the manufacturer<\/li>\n<\/ul>\n<p class=\"isSelectedEnd\">The combination of high accuracy, an exceptionally wide pressure range, extensive data logging and modern communication makes the <strong>Additel ADT 681A<\/strong> a powerful solution for professional pressure metrology.<\/p>\n<h2>Designed for Demanding Calibration Applications<\/h2>\n<p class=\"isSelectedEnd\">The <strong>Additel ADT 681A<\/strong> was developed for applications requiring reliable and highly accurate pressure measurements.<\/p>\n<p class=\"isSelectedEnd\">Typical applications include:<\/p>\n<ul data-spread=\"false\">\n<li>Calibration laboratories<\/li>\n<li>DAkkS accredited calibration laboratories<\/li>\n<li>In-house calibration laboratories<\/li>\n<li>Quality assurance<\/li>\n<li>Measuring equipment monitoring<\/li>\n<li>Research and development<\/li>\n<li>Mechanical engineering<\/li>\n<li>Plant engineering<\/li>\n<li>Process industries<\/li>\n<li>Energy supply<\/li>\n<li>Production testing<\/li>\n<li>Test benches<\/li>\n<li>Maintenance<\/li>\n<li>Mobile calibration service<\/li>\n<\/ul>\n<p class=\"isSelectedEnd\">A typical application is pressure gauge calibration.<\/p>\n<p class=\"isSelectedEnd\">The ADT 681A and the device under test are connected to a suitable pressure source. The indication of the device under test can then be compared directly with the high-accuracy reference value displayed by the ADT 681A.<\/p>\n<p class=\"isSelectedEnd\">The instrument is therefore suitable for calibration and comparison measurements involving precision pressure gauges, general-purpose pressure gauges and other pressure instruments.<\/p>\n<h2>Pressure Ranges up to 4,200 bar<\/h2>\n<p class=\"isSelectedEnd\">The <strong>Additel ADT 681A<\/strong> is available in a wide selection of pressure ranges.<\/p>\n<p class=\"isSelectedEnd\">The maximum measurement range extends to:<\/p>\n<p class=\"isSelectedEnd\"><strong>60,000 psi<\/strong><\/p>\n<p class=\"isSelectedEnd\">or<\/p>\n<p class=\"isSelectedEnd\"><strong>4,200 bar<\/strong><\/p>\n<p class=\"isSelectedEnd\">This exceptionally broad range allows the digital pressure gauge to be used for conventional industrial pressure measurement as well as demanding high-pressure calibration.<\/p>\n<p class=\"isSelectedEnd\">Available configurations extend from very low differential and gauge pressure ranges to high-pressure versions.<\/p>\n<p class=\"isSelectedEnd\">When selecting the appropriate measurement range, it is important to consider that many accuracy specifications are based on full scale.<\/p>\n<p class=\"isSelectedEnd\">Selecting a range that closely matches the actual application can therefore help minimize the absolute measurement uncertainty contribution associated with the pressure gauge.<\/p>\n<p class=\"isSelectedEnd\">europascal can assist you in selecting the appropriate pressure range and accuracy class for your application.<\/p>\n<h2>Accuracy Down to 0.01 % FS<\/h2>\n<p class=\"isSelectedEnd\">One of the most important features of the <strong>Additel ADT 681A<\/strong> is its high pressure measurement accuracy.<\/p>\n<p class=\"isSelectedEnd\">Several accuracy options are available:<\/p>\n<p class=\"isSelectedEnd\"><strong>ADT 681A-01<\/strong><br \/>\n<strong>0.01 % FS<\/strong><\/p>\n<p class=\"isSelectedEnd\"><strong>ADT 681A-02<\/strong><br \/>\n<strong>0.02 % FS<\/strong><\/p>\n<p class=\"isSelectedEnd\"><strong>ADT 681A-05<\/strong><br \/>\n<strong>0.05 % FS<\/strong><\/p>\n<p class=\"isSelectedEnd\">A reading-based RD version is also available.<\/p>\n<p class=\"isSelectedEnd\">For this version, the specified accuracy is:<\/p>\n<p class=\"isSelectedEnd\"><strong>0 to 20 % of range: \u00b10.02 % FS<\/strong><\/p>\n<p class=\"isSelectedEnd\">and<\/p>\n<p class=\"isSelectedEnd\"><strong>20 to 110 % of range: \u00b10.1 % of reading<\/strong><\/p>\n<p class=\"isSelectedEnd\">This allows the ADT 681A to be selected according to the required pressure range and accuracy level.<\/p>\n<h2>Full Temperature Compensation<\/h2>\n<p class=\"isSelectedEnd\">Pressure sensors can be sensitive to changes in ambient temperature. For high-accuracy pressure measurements, this influence needs to be carefully controlled.<\/p>\n<p class=\"isSelectedEnd\">The <strong>Additel ADT 681A<\/strong> is fully temperature compensated over a range from:<\/p>\n<p class=\"isSelectedEnd\"><strong>\u221210 \u00b0C to 50 \u00b0C<\/strong><\/p>\n<p class=\"isSelectedEnd\">This enables the instrument to be used both under controlled laboratory conditions and for mobile measurements where ambient temperatures may vary significantly.<\/p>\n<p class=\"isSelectedEnd\">The wide compensated temperature range helps maintain the specified measurement performance outside a conventional calibration laboratory.<\/p>\n<h2>Optional Integrated Barometer<\/h2>\n<p class=\"isSelectedEnd\">For additional flexibility, the <strong>Additel ADT 681A<\/strong> can be equipped with an integrated barometer.<\/p>\n<p class=\"isSelectedEnd\">The specified accuracy of the optional barometric sensor is:<\/p>\n<p class=\"isSelectedEnd\"><strong>\u00b155 Pa<\/strong><\/p>\n<p class=\"isSelectedEnd\">Depending on the selected sensor configuration, this supports the indication of gauge and absolute pressure values.<\/p>\n<p class=\"isSelectedEnd\">For suitable applications, the optional barometric sensor can reduce the requirement for a separate barometric reference instrument.<\/p>\n<h2>Different Pressure Types<\/h2>\n<p class=\"isSelectedEnd\">Depending on the selected configuration, the <strong>Additel ADT 681A<\/strong> supports several pressure types.<\/p>\n<p class=\"isSelectedEnd\">These include:<\/p>\n<ul data-spread=\"false\">\n<li>Gauge pressure<\/li>\n<li>Compound pressure<\/li>\n<li>Absolute pressure<\/li>\n<li>Differential pressure<\/li>\n<li>Barometric pressure<\/li>\n<\/ul>\n<p class=\"isSelectedEnd\">For suitable configurations, absolute pressure can be calculated using gauge pressure and barometric pressure.<\/p>\n<p class=\"isSelectedEnd\">This makes the ADT 681A a flexible platform for a wide variety of pressure measurement applications.<\/p>\n<h2>Powerful Data Logger<\/h2>\n<p class=\"isSelectedEnd\">An important feature of the <strong>Additel ADT 681A<\/strong> is its integrated data logger.<\/p>\n<p class=\"isSelectedEnd\">The instrument can store up to:<\/p>\n<p class=\"isSelectedEnd\"><strong>10,000,000 measurement records<\/strong><\/p>\n<p class=\"isSelectedEnd\">This makes the digital pressure gauge particularly suitable for:<\/p>\n<ul data-spread=\"false\">\n<li>Long-term pressure recording<\/li>\n<li>Stability measurements<\/li>\n<li>Pressure tests<\/li>\n<li>Leak tests<\/li>\n<li>Process monitoring<\/li>\n<li>Comparison measurements<\/li>\n<li>Test bench applications<\/li>\n<li>Pressure trend recording<\/li>\n<\/ul>\n<p class=\"isSelectedEnd\">The large storage capacity enables extensive measurement sequences without requiring a permanently connected PC.<\/p>\n<h2>Bluetooth and Additel Link Mobile App<\/h2>\n<p class=\"isSelectedEnd\">The <strong>Additel ADT 681A<\/strong> provides integrated Bluetooth communication.<\/p>\n<p class=\"isSelectedEnd\">This enables the pressure gauge to communicate with the <strong>Additel Link Mobile App<\/strong>.<\/p>\n<p class=\"isSelectedEnd\">Wireless connectivity makes it possible to observe pressure measurements remotely.<\/p>\n<p class=\"isSelectedEnd\">This can be particularly useful for:<\/p>\n<ul data-spread=\"false\">\n<li>Hard-to-access measurement points<\/li>\n<li>Pressure tests<\/li>\n<li>High-pressure applications<\/li>\n<li>Long-term measurements<\/li>\n<li>Test benches<\/li>\n<\/ul>\n<p class=\"isSelectedEnd\">The operator does not need to remain directly next to the pressure gauge throughout the entire measurement procedure.<\/p>\n<h2>Large, Easy-to-Read Display<\/h2>\n<p class=\"isSelectedEnd\">The <strong>Additel ADT 681A<\/strong> features a large digital display designed for excellent readability.<\/p>\n<p class=\"isSelectedEnd\">In addition to the numerical pressure value, a graphical percentage-of-range indication can be displayed.<\/p>\n<p class=\"isSelectedEnd\">This provides a quick visual indication of the current pressure relative to the selected measurement range.<\/p>\n<p class=\"isSelectedEnd\">Additional information can include:<\/p>\n<ul data-spread=\"false\">\n<li>Minimum value<\/li>\n<li>Maximum value<\/li>\n<li>TARE value<\/li>\n<li>Ambient temperature<\/li>\n<li>Barometric pressure<\/li>\n<li>Leak test results<\/li>\n<\/ul>\n<p class=\"isSelectedEnd\">The combination of numerical and graphical information makes the gauge convenient for both laboratory and field applications.<\/p>\n<h2>Integrated Leak Test Function<\/h2>\n<p class=\"isSelectedEnd\">The <strong>Additel ADT 681A<\/strong> provides an integrated function for pressure leak testing.<\/p>\n<p class=\"isSelectedEnd\">Pressure changes can be monitored over a defined period.<\/p>\n<p class=\"isSelectedEnd\">Combined with the data logger, this makes the instrument suitable for evaluating:<\/p>\n<ul data-spread=\"false\">\n<li>Pneumatic systems<\/li>\n<li>Hydraulic systems<\/li>\n<li>Pipelines<\/li>\n<li>Valves<\/li>\n<li>Pressure connections<\/li>\n<li>Test setups<\/li>\n<\/ul>\n<p class=\"isSelectedEnd\">Pressure changes can be recorded and evaluated after the measurement.<\/p>\n<h2>Robust IP67 Construction<\/h2>\n<p class=\"isSelectedEnd\">The <strong>Additel ADT 681A<\/strong> was developed not only for laboratory use but also for demanding mobile field applications.<\/p>\n<p class=\"isSelectedEnd\">The instrument provides an <strong>IP67<\/strong> protection rating.<\/p>\n<p class=\"isSelectedEnd\">This makes the digital pressure gauge suitable for industrial environments where dust, moisture and demanding operating conditions may be encountered.<\/p>\n<p class=\"isSelectedEnd\">Typical field applications include:<\/p>\n<ul data-spread=\"false\">\n<li>Maintenance<\/li>\n<li>Mechanical engineering<\/li>\n<li>Plant engineering<\/li>\n<li>Process industries<\/li>\n<li>Mobile calibration<\/li>\n<li>Pressure testing<\/li>\n<\/ul>\n<h2>Flexible Pressure Connections<\/h2>\n<p class=\"isSelectedEnd\">The ADT 681A can be ordered with different pressure connections.<\/p>\n<p class=\"isSelectedEnd\">Depending on the pressure range and configuration, available connections include:<\/p>\n<ul data-spread=\"false\">\n<li>1\/4 NPT male<\/li>\n<li>1\/2 NPT male<\/li>\n<li>1\/4 BSP male<\/li>\n<li>1\/2 BSP male<\/li>\n<li>M20 \u00d7 1.5 male<\/li>\n<\/ul>\n<p class=\"isSelectedEnd\">Special Autoclave connections are also available for high-pressure ranges.<\/p>\n<p class=\"isSelectedEnd\">This enables the digital pressure gauge to be adapted to different national and international pressure systems.<\/p>\n<h2>Technical Highlights<\/h2>\n<p class=\"isSelectedEnd\">The <strong>Additel ADT 681A<\/strong> combines high measurement accuracy with extensive functionality:<\/p>\n<ul data-spread=\"false\">\n<li>Pressure ranges up to 4,200 bar<\/li>\n<li>Accuracy down to 0.01 % FS<\/li>\n<li>0.02 % FS version<\/li>\n<li>0.05 % FS version<\/li>\n<li>Reading-based version down to 0.1 % of reading<\/li>\n<li>Gauge pressure<\/li>\n<li>Compound pressure<\/li>\n<li>Absolute pressure<\/li>\n<li>Differential pressure<\/li>\n<li>Optional barometer with \u00b155 Pa accuracy<\/li>\n<li>Temperature compensation from \u221210 \u00b0C to 50 \u00b0C<\/li>\n<li>Data logger for up to 10 million records<\/li>\n<li>Bluetooth<\/li>\n<li>Additel Link Mobile App<\/li>\n<li>Large digital display<\/li>\n<li>Graphical percentage indication<\/li>\n<li>Minimum and maximum function<\/li>\n<li>TARE<\/li>\n<li>Leak test<\/li>\n<li>IP67<\/li>\n<li>Intrinsically safe version available<\/li>\n<\/ul>\n<h2>Technical Specifications<\/h2>\n<table>\n<tbody>\n<tr>\n<th>Feature<\/th>\n<th>Additel ADT 681A<\/th>\n<\/tr>\n<tr>\n<td>Manufacturer<\/td>\n<td>Additel<\/td>\n<\/tr>\n<tr>\n<td>Model<\/td>\n<td>ADT 681A<\/td>\n<\/tr>\n<tr>\n<td>Device type<\/td>\n<td>Precision Digital Pressure Gauge<\/td>\n<\/tr>\n<tr>\n<td>Maximum pressure range<\/td>\n<td>Up to 4,200 bar<\/td>\n<\/tr>\n<tr>\n<td>Maximum pressure range<\/td>\n<td>Up to 60,000 psi<\/td>\n<\/tr>\n<tr>\n<td>Accuracy 01<\/td>\n<td>0.01 % FS<\/td>\n<\/tr>\n<tr>\n<td>Accuracy 02<\/td>\n<td>0.02 % FS<\/td>\n<\/tr>\n<tr>\n<td>Accuracy 05<\/td>\n<td>0.05 % FS<\/td>\n<\/tr>\n<tr>\n<td>RD accuracy<\/td>\n<td>Down to 0.1 % of reading<\/td>\n<\/tr>\n<tr>\n<td>Temperature compensation<\/td>\n<td>\u221210 \u00b0C to 50 \u00b0C<\/td>\n<\/tr>\n<tr>\n<td>Pressure types<\/td>\n<td>Gauge, compound, absolute, differential, barometric<\/td>\n<\/tr>\n<tr>\n<td>Barometer<\/td>\n<td>Optional<\/td>\n<\/tr>\n<tr>\n<td>Barometer accuracy<\/td>\n<td>\u00b155 Pa<\/td>\n<\/tr>\n<tr>\n<td>Data logger<\/td>\n<td>Integrated<\/td>\n<\/tr>\n<tr>\n<td>Storage capacity<\/td>\n<td>Up to 10,000,000 records<\/td>\n<\/tr>\n<tr>\n<td>Communication<\/td>\n<td>Bluetooth<\/td>\n<\/tr>\n<tr>\n<td>Mobile App<\/td>\n<td>Additel Link<\/td>\n<\/tr>\n<tr>\n<td>Leak test<\/td>\n<td>Integrated<\/td>\n<\/tr>\n<tr>\n<td>TARE<\/td>\n<td>Integrated<\/td>\n<\/tr>\n<tr>\n<td>Min\/Max indication<\/td>\n<td>Integrated<\/td>\n<\/tr>\n<tr>\n<td>Protection rating<\/td>\n<td>IP67<\/td>\n<\/tr>\n<tr>\n<td>Ex version<\/td>\n<td>ADT 681AEx<\/td>\n<\/tr>\n<tr>\n<td>Calibration<\/td>\n<td>ISO\/IEC 17025 accredited according to manufacturer<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h2>Additel ADT 681A vs. ADT 680A<\/h2>\n<p class=\"isSelectedEnd\">The <strong>Additel ADT 681A<\/strong> is designed for users with significantly higher accuracy requirements than the ADT 680A.<\/p>\n<p class=\"isSelectedEnd\">The <strong>Additel ADT 680A<\/strong> provides accuracy classes of <strong>0.1 % or 0.2 % FS<\/strong> and is particularly suitable for industrial pressure measurement and monitoring applications.<\/p>\n<p class=\"isSelectedEnd\">The <strong>Additel ADT 681A<\/strong>, in comparison, provides accuracy down to <strong>0.01 % FS<\/strong> and is therefore particularly suitable for:<\/p>\n<ul data-spread=\"false\">\n<li>Calibration applications<\/li>\n<li>Comparison measurements<\/li>\n<li>Reference measurements<\/li>\n<li>Measuring equipment monitoring<\/li>\n<li>Demanding laboratory applications<\/li>\n<\/ul>\n<p class=\"isSelectedEnd\">The ADT 681A also provides an extensive data logging capability with storage for up to <strong>10 million measurement records<\/strong>.<\/p>\n<h2>Intrinsically Safe ADT 681AEx Version<\/h2>\n<p class=\"isSelectedEnd\">For applications in hazardous areas, Additel also provides the <strong>ADT 681AEx<\/strong>.<\/p>\n<p class=\"isSelectedEnd\">The intrinsically safe version is based on the ADT 681A platform and combines high pressure measurement accuracy with a design intended for corresponding hazardous-area applications.<\/p>\n<p class=\"isSelectedEnd\">The choice between the ADT 681A and ADT 681AEx therefore primarily depends on the requirements of the operating environment.<\/p>\n<h2>Why Choose the Additel ADT 681A?<\/h2>\n<p class=\"isSelectedEnd\">The <strong>Additel ADT 681A<\/strong> combines high pressure measurement accuracy with an exceptionally wide pressure range and extensive digital functionality.<\/p>\n<p class=\"isSelectedEnd\">With accuracy down to <strong>0.01 % FS<\/strong>, the instrument is suitable not only as a digital process pressure indicator but particularly for professional comparison and calibration applications.<\/p>\n<p class=\"isSelectedEnd\">Its maximum range of <strong>4,200 bar \/ 60,000 psi<\/strong> enables applications from low pressure through demanding high-pressure measurement.<\/p>\n<p class=\"isSelectedEnd\">The integrated data logger with storage for up to 10 million measurement records supports long-term measurements and complex pressure tests.<\/p>\n<p class=\"isSelectedEnd\">Bluetooth and Additel Link provide modern wireless monitoring capabilities.<\/p>\n<p class=\"isSelectedEnd\">The robust IP67 construction supports both laboratory operation and mobile field use.<\/p>\n<h2>Typical Calibration Applications with the Additel ADT 681A<\/h2>\n<p class=\"isSelectedEnd\">The <strong>Additel ADT 681A<\/strong> is suitable for numerous professional pressure measurement and calibration applications.<\/p>\n<p class=\"isSelectedEnd\">Typical devices under test and applications include:<\/p>\n<ul data-spread=\"false\">\n<li>Precision pressure gauges<\/li>\n<li>Digital pressure gauges<\/li>\n<li>Analog pressure gauges<\/li>\n<li>Pressure sensors<\/li>\n<li>Pressure transmitters<\/li>\n<li>Pressure transducers<\/li>\n<li>Pressure switches<\/li>\n<li>Blood pressure measuring instruments<\/li>\n<li>Pressure test benches<\/li>\n<li>Process pressure measurement<\/li>\n<li>Leak testing<\/li>\n<li>Long-term pressure measurement<\/li>\n<li>Comparison measurements<\/li>\n<li>Reference measurements<\/li>\n<\/ul>\n<p class=\"isSelectedEnd\">For a conventional comparison calibration, the ADT 681A and the device under test can be connected to a suitable pressure source.<\/p>\n<p class=\"isSelectedEnd\">The pressure is changed step by step and the indication of the device under test is compared with the measurement value of the <strong>Additel ADT 681A<\/strong>.<\/p>\n<p class=\"isSelectedEnd\">The integrated data logging function can simultaneously record measurement values for later evaluation.<\/p>\n<p class=\"isSelectedEnd\">At <strong>europascal<\/strong>, you can obtain the Additel ADT 681A together with suitable pressure pumps, adapters and additional accessories for professional pressure measurement and calibration.<\/p>\n<p class=\"isSelectedEnd\">For regular calibration and metrological traceability of your ADT 681A and other pressure instruments, use the <a href=\"https:\/\/europascal.de\/en\/calibration-services\/\">europascal Calibration Service<\/a>.<\/p>\n<p class=\"isSelectedEnd\">Additional measurement and calibration solutions are available through the <a href=\"https:\/\/europascal.de\/en\/\">europascal English homepage<\/a>.<\/p>\n<p class=\"isSelectedEnd\"><a href=\"https:\/\/europascal.de\/en\/\">Discover more products and calibration solutions from europascal.<\/a><\/p>\n<p>Manufacturer information about the <strong>Additel ADT 681A<\/strong> is available on the <a href=\"https:\/\/www.additel.com\/product-detail.html\/681A-wireless-digital-pressure-gauge\/\" target=\"_blank\" rel=\"noopener\">official Additel ADT 681A product page<\/a>.<\/p>\n<p><a class=\"download-datasheet\" href=\"#\" data-pdf=\"https:\/\/europascal.de\/wp-content\/uploads\/2026\/07\/Additel-ADT-681A-Digital-Pressure-Gauges-20251223.pdf\"> <span style=\"color: #0000ff;\"><strong><em>Download Datasheet<\/em><\/strong><\/span> <\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>The <strong>Additel ADT 681A<\/strong> is a precise digital pressure gauge for professional calibration and pressure measurement applications. With pressure ranges up to <strong>4,200 bar \/ 60,000 psi<\/strong>, accuracy down to <strong>0.01 % FS<\/strong>, storage for up to 10 million measurement records, Bluetooth connectivity and IP67 protection, it provides an excellent solution for laboratory and field pressure metrology.<\/p>\n","protected":false},"featured_media":3209,"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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