Platinum Resistance Temperature Detector
MR 828 and 845
MR series elements are designed for applications where high vibration resistance as well as high temperature stability are
vital. Typical industrial applications include analytical and medical equipment, chemical plants and mechanical equipment.
Small tolerances on diameter allow problem free installation in protective tubes.
Type
1 Pt 100 MR 828
1 Pt 500 MR 828
1 Pt 1000 MR 828
2 Pt 100 MR 828
2 Pt 1000 MR 828
1 Pt 100 MR 845
1 Pt 500 MR 845
1 Pt 1000 MR 845
2 Pt 100 MR 845
2 Pt 500 MR 845
2 Pt 1000 MR 845
The measuring point for the basic value is situated at 8 mm from the end of the sensor body
Toler ance
DIN EN 60751
1996-07
Tolerance
DIN EN 60751
2009-05
Order Number
32 209 340
32 209 341
32 209 342
32 209 343
32 209 345
32 209 346
32 209 347
32 209 348
32 209 349
32 209 350
32 209 351
Diameter D in m m
2,8
2,8
±0, 3
±0, 3
2,8
±0, 3
2,8
±0, 3
2,8
±0, 3
4,5
±0, 3
4,5
±0, 3
4,5
4,5
±0, 3
4,5
4,5
±0, 3
±0, 3
±0, 3
Class B
F 0.3
Specification
Nominal resistance
Temperature range
DIN EN 60751
100Ω; 500Ω and 1000Ω at 0°C
-70°C to +500°C (continuous operation)
Temporary use to 550°C possible
Tolerance Class B: -70°C up to +500°C
TCR = 3850 ppm/K
Pt clad Ni- wire
6 mm +2 / -1mm
max. R
0
-drift 0.1% after 1000h at 500°C
according to DIN EN 60751
unhoused for dry environments only
> 100 MΩ at 20°C; > 2 MΩ at 500°C
100Ω 0.3 to 1.0mA
500Ω 0.1 to 0.7mA
1000Ω 0.1 to 0.3mA
(self heating has to be considered)
Water (v= 0.4m/s)
Air (v= 2m/s)
MR 828:
t
0,5
= 0.9s
t
0,5
= 12.3s
MR 845:
t
0,5
= 1.5s
t
0,5
= 24.8s
Temperature coefficient
Leads
Lead lengths (L)
Longterm stability
Vibration resistance
Environmental conditions
Insulation resistance
Measuring current
Response time
t
0,9
= 2.7s
t
0,9
= 39.5s
t
0,9
= 4.6s
t
0,9
= 78.8s
Self heating
MR 828 (Pt 100/500/1000): 0.05 K/mW at 0°C
MR 828 (2 Pt 100/1000): 0.16 K/mW at 0°C
MR 845 (Pt 100/500/1000): 0.04 K/mW at 0°C
MR 845 (2 Pt 100/1000): 0.08 K/mW at 0°C
blister reel
Other tolerances, values of resistance and wire lengths are available
on request.
Packaging
Note
We reserve the right to make alterations and technical data printed. All technical data serves as a guideline and does not guarantee
particular properties to any products.
Heraeus Sensor Technology USA
1901 Route 130
North Brunswick, NJ 08902
Phone 732-940-4400
Fax 732-940-4445
Email info.hst-us@heraeus.com
www.hst-us.com
Name of document: 30910032 Index A
Status: 10/2009
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