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.
Name of document: 30910021 Index B
Status: 06/2016
Platinum Resistance Temperature Detector M 422
M series PRTDs are especially robust and are designed for large volume applications where long term stability,
interchangeability and accuracy over a large temperature range are vital. Typical applications are Automotive, White
Goods, HVAC, Energy Management, Medical and Industrial Equipment.
Specification DIN EN 60751 (according to IEC 751)
Temperature range -70°C to +500°C (continuous operation)
(temporary use to 550°C possible)
Tolerance Class B: -70°C to +500°C
Tolerance Class A: -50°C to +300°C
Tolerance Class 1/3 B: 0°C to +150°C
Temperature coefficient TC = 3850 ppm/K ; 3750 ppm/K available
on request
Leads Pt clad Ni- wire
Recommend connection technology:
Welding, Crimping and Brazing
Lead lengths (L) 10mm ±1mm
Longterm stability max. R
0
-drift 0.04% after 1000 h at 500 °C
Vibration resistance at least 40g acceleration at 10 to 2000 Hz,
depends on installation
Shock resistance at least 100g acceleration with 8ms half sine
wave, depends on installation
Environmental conditions unhoused for dry environments only
Insulation resistance > 100 M at 20°C; > 2 M at 500°C
Self heating 0.3 K/mW at 0°C
Response time water current (v= 0.4m/s): t
0.5
= 0.07s
t
0.9
= 0.20s
air stream (v= 2m/s): t
0.5
= 3.2s
t
0.9
= 11s
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)
Note Other tolerances, values of resistance and wire lengths are
available on request.
N
om
inal
R
e
sistance
R0
T
ol
erance
D
I
N EN 60751
1996-07
T
ol
erance
D
I
N EN 60751
2009-05
Orde
r
Number
P
l
astic Bag
Orde
r
Number
B
l
ister reel
1
0
0 Ohm at 0°C
C
las
s 1/3 B
C
las
s A
C
las
s B
F
0
.1
F
0
.15
F
0
.3
3
2
208 500
3
2
208 498
3
2
208 392
3
2
208 522
3
2
208 521
3
2
208 520
5
0
0 Ohm at 0°C
C
las
s 1/3 B
C
las
s A
C
las
s B
F
0
.1
F
0
.15
F
0
.3
3
2
208 502
3
2
208 501
3
2
208 414
3
2
208 525
3
2
208 524
3
2
208 523
1
0
00 Ohm at 0°C
C
las
s 1/3 B
C
las
s A
C
las
s B
F
0
.1
F
0
.15
F
0
.3
3
2
208 537
3
2
208 503
3
2
208 499
3
2
208 527
3
2
208 526
The measuring point for the nominal resistance is defined at 8mm from the end of the sensor body.
Heraeus Sensor Technology USA
770 Township Line Road, Suite 300
Yardley, PA 19067 USA
Phone 1-215-944-9010 Fax 1-215-944-9392
Email info.hst-us@heraeus.com
www.hst-us.com
