{"id":1863,"date":"2023-08-01T14:26:21","date_gmt":"2023-08-01T14:26:21","guid":{"rendered":"https:\/\/calibration.consulting\/product\/iet-prs-300-precision-programmable-resistance-decade\/"},"modified":"2025-12-23T12:57:21","modified_gmt":"2025-12-23T12:57:21","slug":"iet-prs-300-precision-programmable-resistance-decade","status":"publish","type":"product","link":"https:\/\/calibration.consulting\/en\/product\/iet-prs-300-precision-programmable-resistance-decade\/","title":{"rendered":"IET PRS-330 Programmable Resistance Decade Substituter"},"content":{"rendered":"

Precision resistance and RTD simulation for modern test and calibration systems<\/strong><\/p>\n

The IET<\/a> PRS-330 Programmable Resistance Decade Substituter is an advanced programmable decade resistance and RTD simulator designed for both laboratory and production applications. The instrument combines high accuracy, a wide resistance range and a modern user interface, making it a versatile solution for automated test systems, temperature controller calibration and precision resistance measurements. With its extensive connectivity options and intuitive operation, the PRS-330 offers functionality that was previously unavailable in conventional programmable resistance cabinets.<\/p>\n

Modern touchscreen operation<\/h3>\n

The PRS-330 is equipped with a large, bright colour touchscreen that offers fast response and excellent readability, even in challenging lighting conditions. The interface uses clear menus, large typography and breadcrumb navigation, so the user always knows where they are in the menu. Settings such as resistance, temperature, interfaces and network configuration can be entered directly via the screen. The operation feels modern, fast and intuitive, significantly increasing efficiency in daily workflows.<\/p>\n

High-accuracy programmable decade resistor<\/h3>\n

In Source Resistance mode, the PRS-330 functions as a highly accurate programmable decade resistor. Thanks to an advanced algorithm and a minimalist design with fewer internal components, the instrument achieves an accuracy of \u00b170 ppm + 1 m\u03a9 and a resolution of up to 1 \u00b5\u03a9. This represents a 30% improvement in accuracy and a thousandfold improvement in resolution compared to traditional decade boxes.<\/p>\n

The PRS-330 supports a resistance range from 0.1 \u03a9 to 20 M\u03a9, with both 2-wire and 4-wire connections. The built-in calibration history shows the drift and performance of each internal resistor and can be read via SCPI for further analysis. PRS-DMM software is available for automatic recalibration, allowing the internal resistors to be easily adjusted using a Fluke 8508A or Keysight 3458A.<\/p>\n

RTD simulation without detours<\/h3>\n

In RTD Simulation mode, the PRS-330 directly simulates the resistance corresponding to an entered temperature, without the need for tables or corrections. The user simply enters a temperature \u2014 in Celsius or Fahrenheit \u2014 and the instrument automatically selects the correct resistance. The PRS-330 includes standard tables for PT-100 and PT-1000, but also supports fully customised RTD tables that can be stored in memory. The basic accuracy for PT-100 and PT-1000 is \u00b10.06 \u00b0C over a range of \u2013200 \u00b0C to 850 \u00b0C. In addition, the instrument can function as an automated resistance carousel thanks to built-in EIA tables (E12, E24, E96), ideal for selecting trimming resistors in development environments.<\/p>\n

Interfaces and automation<\/h3>\n

The PRS-330 is designed for full integration into modern test environments. The instrument supports USB, Ethernet and GPIB, making it easy to incorporate into automated test systems. All network and interface settings can be adjusted via the touchscreen. Cybersecurity has been explicitly incorporated into the design: firmware can only be updated via a physical JTAG connection, not via external interfaces. This protects the instrument against unauthorised access or manipulation.<\/p>\n

Reliability and long service life<\/h3>\n

The PRS\u2011330 is built with high-quality precision resistors, including wirewound and metal foil elements with a temperature coefficient of less than 1 ppm\/\u00b0C. The internal relays have an expected life of 100 million switching cycles, contributing to the instrument’s exceptional reliability. With a stability of 50 ppm per year, low thermal EMFs and a robust mechanical construction, the PRS-330 is designed for long-term professional use.<\/p>\n

Technical performance<\/h3>\n

The instrument offers a minimum setting of 0.100000 \u03a9, a resolution of 1 \u00b5\u03a9, and a maximum load of 2 A or 200 V (peak). Both front and rear connections feature low-EMF, gold-plated tellurium-copper binding posts for optimal measurement quality. The AC frequency response is carefully specified, with typical AC\/DC differences of less than 100 ppm to 10 k\u03a9, rising to 20% at the highest resistance values.<\/p>\n

The PRS-330 Programmable Resistance Decade Substituter offers a unique combination of accuracy, flexibility and ease of use. With its modern interface, extensive automation capabilities, RTD simulation and high reliability, the instrument is a powerful solution for both laboratory and production environments. It is a future-proof choice for anyone who wants to combine precision resistance and temperature simulation in a single compact and versatile system.<\/p>\n","protected":false},"excerpt":{"rendered":"

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  • Accuracy:\u00a0\u00b1(70 ppm + 1 m\u03a9) 4 Terminal<\/li>\n
  • Minimum setting:\u00a00.100 000 \u03a9<\/li>\n
  • Resolution:\u00a01 \u00b5\u03a9 or 6 digits<\/li>\n
  • Range:\u00a00.1 \u03a9- 20 M\u03a9<\/li>\n
  • Stability:\u00a0\u00b150 ppm\/year<\/li>\n
  • Thermal emf:\u00a0< 15 \u00b5V<\/li>\n<\/ul>\n","protected":false},"featured_media":39729,"comment_status":"closed","ping_status":"closed","template":"","meta":{"_acf_changed":false,"_seopress_robots_primary_cat":"none","_seopress_titles_title":"IET PRS-330 Programmable Resistance Decade Substituter","_seopress_titles_desc":"The IET PRS-330 Programmable Resistance Decade Substituter is an advanced programmable decade resistance and RTD simulator designed for both laboratory and field use.","_seopress_robots_index":""},"product_brand":[],"product_cat":[250,252],"product_tag":[],"class_list":["post-1863","product","type-product","status-publish","has-post-thumbnail","product_cat-electrical-calibration","product_cat-decade-banks","first","instock","shipping-taxable","product-type-simple"],"acf":[],"_links":{"self":[{"href":"https:\/\/calibration.consulting\/en\/wp-json\/wp\/v2\/product\/1863","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/calibration.consulting\/en\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/calibration.consulting\/en\/wp-json\/wp\/v2\/types\/product"}],"replies":[{"embeddable":true,"href":"https:\/\/calibration.consulting\/en\/wp-json\/wp\/v2\/comments?post=1863"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/calibration.consulting\/en\/wp-json\/wp\/v2\/media\/39729"}],"wp:attachment":[{"href":"https:\/\/calibration.consulting\/en\/wp-json\/wp\/v2\/media?parent=1863"}],"wp:term":[{"taxonomy":"product_brand","embeddable":true,"href":"https:\/\/calibration.consulting\/en\/wp-json\/wp\/v2\/product_brand?post=1863"},{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/calibration.consulting\/en\/wp-json\/wp\/v2\/product_cat?post=1863"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/calibration.consulting\/en\/wp-json\/wp\/v2\/product_tag?post=1863"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}