In cases where very high accuracy is required in combination with a “zero” coefficient of thermal expansion, the RESOLUTE UHV encoders can be used with the absolute linear\u00a0RELA scale\u00a0<\/b>, this scale is made of Invar, an iron-nickel alloy with a low coefficient of expansion.<\/p>\n
Due to the unique accurate Renishaw grading process, the RELA range has a certified accuracy of \u00b1 1 \u03bcm for lengths up to 1.13 m, certification and calibration of the accuracy of each line is performed in accordance with international standards.<\/p>\n
The invar thermal expansion coefficient is approximately 0.6 \u03bcm\/m\/\u00b0C within the temperature range from 0 to 30 \u00b0 C. In order to solve the problems with very high requirements for accuracy, one can take into account the influence of this small factor, for each ruler its exact value is determined, which is indicated in the calibration certificate.<\/p>\n
In addition to the very low coefficient of thermal expansion, Invar products are exceptionally strong. This makes it possible to produce rulers with a much smaller cross-section as compared to brittle glass rulers. At the same time with invar rulers it is easier to handle during transportation and installation, without risking to break them.<\/p>\n
Specifications<\/b><\/p>\n In cases where very high accuracy is required in combination with a “zero” coefficient of thermal expansion, the RESOLUTE UHV encoders can be used with the absolute linear\u00a0RELA scale\u00a0, this scale is made of Invar, an iron-nickel alloy with a low coefficient of expansion. Due to the unique accurate Renishaw grading process, the RELA range […]<\/p>\n","protected":false},"featured_media":46469,"template":"","meta":[],"product_cat":[2317],"product_tag":[],"producers":[2203],"_links":{"self":[{"href":"https:\/\/test.koda.ua\/en\/wp-json\/wp\/v2\/product\/46473"}],"collection":[{"href":"https:\/\/test.koda.ua\/en\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/test.koda.ua\/en\/wp-json\/wp\/v2\/types\/product"}],"version-history":[{"count":2,"href":"https:\/\/test.koda.ua\/en\/wp-json\/wp\/v2\/product\/46473\/revisions"}],"predecessor-version":[{"id":46482,"href":"https:\/\/test.koda.ua\/en\/wp-json\/wp\/v2\/product\/46473\/revisions\/46482"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/test.koda.ua\/en\/wp-json\/wp\/v2\/media\/46469"}],"wp:attachment":[{"href":"https:\/\/test.koda.ua\/en\/wp-json\/wp\/v2\/media?parent=46473"}],"wp:term":[{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/test.koda.ua\/en\/wp-json\/wp\/v2\/product_cat?post=46473"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/test.koda.ua\/en\/wp-json\/wp\/v2\/product_tag?post=46473"},{"taxonomy":"producers","embeddable":true,"href":"https:\/\/test.koda.ua\/en\/wp-json\/wp\/v2\/producers?post=46473"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}\n\n
\n Built-in LED
\nhead position indicator<\/td>\nYes<\/td>\n<\/tr>\n \n Measuring range, m:<\/td>\n from 0,07 to 1,12<\/td>\n<\/tr>\n \n Length, m:<\/td>\n \u2013 optic scale RELA \u2013 from 0,08 to 1,13<\/td>\n<\/tr>\n \n Resolution, nm:<\/td>\n 1, 5, 50, 100<\/td>\n<\/tr>\n \n Step of the scale, mkm:<\/td>\n 30<\/td>\n<\/tr>\n \n Max speed, m\/s:<\/td>\n 100<\/td>\n<\/tr>\n \n Clearance between reading head
\nand optical scale, mm:<\/td>\n0,8 \u00b1 0,15<\/td>\n<\/tr>\n \n System accuracy at 20 \u00b0 C, \u03bcm:<\/td>\n \u2013 \u00b1 1 (in length up to 1,13 \u043c)<\/td>\n<\/tr>\n \n Scale option:<\/td>\n \u2013 mechanically fastened
\n– glued<\/td>\n<\/tr>\n\n Coefficient of thermal expansion, \u03bcm\/m\/\u00b0\u0421:<\/td>\n \u2014 0,6 (at temperatures from 0 \u00b0 C to 30 \u00b0C)
\n\u2014 not less than 1,4 (at temperatures from 30 \u00b0 C to 100 \u00b0C)<\/td>\n<\/tr>\n\n Supply voltage, V:<\/td>\n 5 \u00b1 10 %<\/td>\n<\/tr>\n \n Current consumption (with load), mA:<\/td>\n 250<\/td>\n<\/tr>\n \n Protocol:<\/td>\n BiSS, FANUC, Siemens DRIVE\u2013CLiQ, Mitsubishi, Panasonic<\/td>\n<\/tr>\n \n Material:<\/td>\n \u2013 optical scale RELA – highly stabilized, low-expansion iron-nickel alloy (ZeroMet. – Invar)<\/td>\n<\/tr>\n \n Cable:<\/td>\n braided copper cable, shielded in one layer with silver foil, FEP-insulation of cores, deposited on tinned copper wire<\/td>\n<\/tr>\n \n Mass, g:<\/td>\n \u2013 reading head \u2013 19<\/td>\n<\/tr>\n \n Mass, g\/m:<\/td>\n \u2013 cable \u2013 19
\n\u2013 optic scale RELA \u2013 184<\/td>\n<\/tr>\n\n Temperature, \u00b0\u0421:<\/td>\n \u2013 process \u2013 from 0 to + 75
\n\u2013 storage \u2013 from 0 to +80
\n\u2013 sintering \u2013 + 120<\/td>\n<\/tr>\n\n Degree of protection:<\/td>\n IP30<\/td>\n<\/tr>\n \n Maximum humidity (estimated at temperatures up to + 40 \u00b0 C, without condensation), %:<\/td>\n 95<\/td>\n<\/tr>\n \n Acceleration, m\/s\u00a02<\/sup>:<\/td>\n 500<\/td>\n<\/tr>\n \n Impact (in non-operating state,
\n6 ms, half-sinusoidal impulse), m\/s\u00a02<\/sup>:<\/td>\n1000<\/td>\n<\/tr>\n \n Vibration (in operation mode, at, at 55-2000 Hz), m\/s\u00a02<\/sup>:<\/td>\n not more than 100<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n","protected":false},"excerpt":{"rendered":"