Isotech<\/a> Gemini R is a robust and portable high\u2011temperature blackbody source designed for calibrating infrared thermometers and thermal imagers across the range 30 \u00b0C to 550 \u00b0C. With its deep cavity, emissivity of >0.995 and excellent temperature uniformity, the Gemini R delivers laboratory\u2011grade performance in a compact, field\u2011ready instrument. It is widely used as a primary radiation source for IR instruments in both laboratory and industrial environments where reliability and low uncertainty are essential.<\/p>\nDeep cavity with high emissivity<\/h3>\n
At the core of the Gemini R is a 65 mm diameter, 160 mm deep cavity engineered to produce a stable and uniform radiation field. With an emissivity greater than 0.995, the source behaves as an almost ideal blackbody, enabling accurate and repeatable IR measurements. Uniformity is achieved through distributed heating technology, ensuring consistent radiance throughout the cavity, even at elevated temperatures.<\/p>\n
Precise control and built\u2011in traceability<\/h3>\n
The Gemini R features a digital controller that allows any temperature between 30 \u00b0C and 550 \u00b0C to be set with precision. Traceability is ensured through a built\u2011in temperature indicator and a supplied platinum resistance thermometer (PRT). Each unit includes a three\u2011point traceable calibration certificate, and optional UKAS calibration is available for both the PRT and the radiometric output.<\/p>\n
Thermal performance and test results<\/h3>\n
The Gemini R offers:<\/p>\n
\n- > Stability: \u00b10.1 \u00b0C<\/li>\n
- > Emissivity: >0.995<\/li>\n
- > Display resolution: 0.01 \u00b0C to 99.99 \u00b0C, then 0.1 \u00b0C<\/li>\n
- > Cavity dimensions: 65 mm diameter, 160 mm deep<\/li>\n
- > Power consumption: 1000 W<\/li>\n
- > Supply: 100\u2013130 V or 208\u2013240 V<\/li>\n<\/ul>\n
Test data show controller variations of only \u00b10.2 \u00b0C over five minutes. A 13 mm radiation thermometer surveying the 65 mm target found maximum differences of +1 \u00b0C between 100 \u00b0C and 500 \u00b0C. Using a fibre\u2011optic probe, temperature differences of up to +4 \u00b0C were measured along the inner 100 mm of the cavity at 400 \u00b0C and 500 \u00b0C. The controller temperature typically agrees with radiometric measurements to within \u00b12 \u00b0C.<\/p>\n
Compatible with ITS\u201190 Fixed\u2011Point Cells<\/h3>\n
For the lowest uncertainties, the Gemini R can be used with Isotech ITS\u201190 fixed\u2011point cells, including:<\/p>\n
\n- > Gallium (29.7646 \u00b0C)<\/li>\n
- > Indium (156.5985 \u00b0C)<\/li>\n
- > Tin (231.928 \u00b0C)<\/li>\n
- > Zinc (419.527 \u00b0C)<\/li>\n<\/ul>\n
These hockey\u2011puck cells are supplied with metal\u2011purity certificates and provide exceptionally stable reference temperatures.<\/p>\n
Design and portability<\/h3>\n
Weighing 10 kg and measuring 310 \u00d7 265 \u00d7 200 mm, the Gemini R is compact enough for field use yet robust enough for daily laboratory operation. A dedicated carrying case is available for transport and protection. The Isotech Gemini R is a powerful, accurate and versatile high\u2011temperature blackbody source. With its deep cavity, high emissivity, excellent uniformity and compatibility with ITS\u201190 fixed\u2011point cells, it is an outstanding choice for demanding infrared calibration in both laboratory and industrial settings.<\/p>\n
<\/p>\n","protected":false},"excerpt":{"rendered":"
\n- 30\u00b0C to 550\u00b0C<\/li>\n
- Stability +\/-0.1\u00b0C<\/li>\n
- Emissivity > 0.995<\/li>\n
- 65mm Diameter Cavity<\/li>\n<\/ul>\n","protected":false},"featured_media":40132,"comment_status":"closed","ping_status":"closed","template":"","meta":{"_acf_changed":false,"_seopress_robots_primary_cat":"none","_seopress_titles_title":"Isotech 976 Gemini R High\u2011Temperature Blackbody Source","_seopress_titles_desc":"The Isotech Gemini R Blackbody is a portable calibration source and provides calibration of non-contact infrared thermometers in range from 30\u00b0C to 550\u00b0C.","_seopress_robots_index":""},"product_brand":[],"product_cat":[249,263,265],"product_tag":[],"class_list":["post-1884","product","type-product","status-publish","has-post-thumbnail","product_cat-calibration-en","product_cat-temperature-calibration","product_cat-infrared-calibration","first","instock","shipping-taxable","product-type-simple"],"acf":[],"_links":{"self":[{"href":"https:\/\/calibration.consulting\/en\/wp-json\/wp\/v2\/product\/1884","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=1884"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/calibration.consulting\/en\/wp-json\/wp\/v2\/media\/40132"}],"wp:attachment":[{"href":"https:\/\/calibration.consulting\/en\/wp-json\/wp\/v2\/media?parent=1884"}],"wp:term":[{"taxonomy":"product_brand","embeddable":true,"href":"https:\/\/calibration.consulting\/en\/wp-json\/wp\/v2\/product_brand?post=1884"},{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/calibration.consulting\/en\/wp-json\/wp\/v2\/product_cat?post=1884"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/calibration.consulting\/en\/wp-json\/wp\/v2\/product_tag?post=1884"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}