Brand: SENSOTHERM, type: platinum RTD, Model: PT100 / PT1000, indexing number: PT100 / PT1000, measuring range: -50 ~ 400 (℃), tolerance level: A, thermal response time: less than 0.9 (s) , QTY: 100.
1985 Murata Electronics Group started Platinum - developed thin-cut sensor.
1995 enterprise management buyout (MBO) in the form of independent SENSOTHERM
SENSOTHERM platinum resistance developed by the metal platinum into batter, using a photosensitive lithographic techniques, the platinum layer is attached to a platinum layer formed on the ceramic substrate, the film thickness at 2μm or less, plus lead and protect the glaze made of laser-trimming .
Advantages: small dimensions, high shock resistance, good long-term stability, automated production so that consistency, thermal response time is short, low thermal capacity, better reproducibility.
Disadvantages: work (sampling) current is small (1mA), self-heating than other large components.
• platinum resistance base value and accuracy
From -200 ℃ to + 600 ℃ basic value (in accordance with DIN EN60751): 0 ℃ and + 100 ℃ average temperature coefficient between: 3.85 * 10-³K-¹, the basic value of platinum resistance temperature sensor according to the following formula:
For the range of -200 ℃ to 0 ℃ to apply the formula:
Rt = R. [1 + At + Bt² + C (t-100 ℃) t³]
For the range of 0 ℃ to 850 ℃ to apply the formula:
Rt = R. (1 + At + Bt²)
1/3 tolerance:
• tin ℃ = ± (0.10 + 0.0017t)
Class A tolerance: • tin ℃ = ± (0.15 + 0.002t)
Class B tolerance: • tin ℃ = ± (0.30 + 0.005t)
2B tolerance level: • tin ℃ = ± (0.60 + 0.007t)
among them:
Rt temperature t when the resistance unit: nominal resistance Ohm R. 0 ℃ temperature t when the unit is ℃ A = 3.9083 x 10-3 ° C-1 B = -5.775 x 10-7 ° C-2 C = -4.183 x 10-12 ° C-4 PT100 design principles: pt100 platinum RTD, its resistance changes with temperature change means that it is 100 at 0 ℃ resistance of 100 ohms after PT. at 100 ℃, its resistance is about 138.5 ohms its industrial principle: When PT100 at 0 degrees Celsius when his resistance of 100 ohms, its resistance as the temperature rises its resistance is a uniform increase Pt100 platinum resistance temperature rise and resistance value table (Note: Pt1000 platinum resistance temperature table please foundation of superior resistance in this table 10). Part pt100 PT100 / PT1000 platinum resistance RT curve chart composed / PT1000 temperature sensing element ceramic components, glass components, mica elements, which are respectively made of platinum wire wound ceramic skeleton, the skeleton of glass, mica skeleton and then through a complex process with a thin film platinum resistance film platinum resistance: vacuum deposition of thin-film technology to platinum sputtered on ceramic substrate, a film thickness of less than 2 microns, with a glass frit to Ni (or Pd) lead fixed by laser trimming made of a thin film element.