we reserve the right to make alterations and techni cal data printed. all technical data serves as a gu ideline and does not guarantee particular properties to any products. name of document: 30910032 index a status: 10/2009 platinum resistance temperature detector mr 828 and 845 mr series elements are designed for applications wh ere high vibration resistance as well as high tempe rature stability are vital. typical industrial applications include anal ytical and medical equipment, chemical plants and m echanical equipment. small tolerances on diameter allow problem free ins tallation in protective tubes. the measuring point for the basic value is situated at 8 mm from the end of the sensor body type toler ance din en 60751 1996-07 tolerance din en 60751 2009-05 order number diameter d in m m 1 pt 100 mr 828 class b f 0.3 32 209 340 2,8 0, 3 1 pt 500 mr 828 32 209 341 2,8 0, 3 1 pt 1000 mr 828 32 209 342 2,8 0, 3 2 pt 100 mr 828 32 209 343 2,8 0, 3 1 pt 100 mr 845 32 209 346 4,5 0, 3 1 pt 500 mr 845 32 209 347 4,5 0, 3 1 pt 1000 mr 845 32 209 348 4,5 0, 3 2 pt 100 mr 845 32 209 349 4,5 0, 3 2 pt 500 mr 845 32 209 350 4,5 0, 3 specification din en 60751 nominal resistance 100 ; 500 and 1000 at 0c temperature range -70c to +500c (continuous operation) temporary use to 550c possible tolerance class b: -70c up to +500c temperature coefficient tcr = 3850 ppm/k leads pt clad ni- wire lead lengths (l) 6 mm +2 / -1mm longterm stability max. r 0 -drift 0.1% after 1000h at 500c vibration resistance according to din en 60751 environmental conditions unhoused for dry environments only insulation resistance > 100 m at 20c; > 2 m at 500c measuring current 100 0.3 to 1.0ma 500 0.1 to 0.7ma 1000 0.1 to 0.3ma (self heating has to be considered) response time water (v= 0.4m/s) air (v= 2m/s) mr 828: t 0,5 = 0.9s t 0,9 = 2.7s t 0,5 = 12.3s t 0,9 = 39.5s mr 845: t 0,5 = 1.5s t 0,9 = 4.6s t 0,5 = 24.8s t 0,9 = 78.8s self heating mr 828 (pt 100/500/1000): 0.05 k/mw at 0c mr 828 (2 pt 100/1000): 0.16 k/mw at 0c mr 845 (pt 100/500/1000): 0.04 k/mw at 0c mr 845 (2 pt 100/1000): 0.08 k/mw at 0c packaging blister reel note other tolerances, values of resistance and wire len gths are available on request. 1901 route 130 north brunswick, nj 08902 phone 732-940-4400 fa x 732-940-4445 email info.hst-us@heraeus.com www.hst-us.com heraeus sensor technology usa 2 pt 1000 mr 828 32 209 345 2,8 0, 3 2 pt 1000 mr 845 32 209 351 4,5 0, 3
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