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RTD Temperature Sensor, PT 100 to PT 1000: Platinum Thin Film RTD Element
Article Index
Reference Table for Pt RTD Elements
Tolerance Graph
Response Time Table

RTD Temperature Sensor & PT 100 to PT 1000: Platinum Thin Film RTD ElementsSensor Scientific, Inc. Platinum Thin Film RTD Elements are fabricated using state-of-the-art thin film processing techniques, resulting in an element of exceptional quality and stability. The wide choice of resistance, tolerance, and size options allows for complete design flexibility.

RTD elements are available with extension leads, and incorporated in complete temperature probe assemblies. Please contact Sensor Scientific for additional information.

  • Available in 100, 500, 1000, and 2000 ohm resistance values
  • Standard DIN EN 60751, ASTME1137 & non-standard tolerances available
  • Custom 2, 3, and 4 wire extension leads available
  • Custom-Engineered Temperature Probe Assemblies

RTD Temperature Sensor Assemblies: Generally, thin film RTD elements are incorporated into some type of assembly for protection. Extension leads may be attached via soldering, crimping, brazing or welding. The attachment method must be capable of withstanding the intended maximum operating temperature.

RTD Temperature Sensor: Diagram of Platinum Thin Film RTD ElementsThe following precautions must be taken when incorporating the element into an assembly:

  1. Avoid straining the element leads.
  2. The resistance of extension leads must be taken into consideration. The resistance value at 0 Deg. C calibrated 1mm from end of lead wire.
  3. If extension leads are attached via soldering or brazing, all flux residue must be removed.
  4. If elements are encapsulated in a potting compound, insure that the compound will not induce pressure loads, resulting in a strain-gage effect.
Resistance
at 0 Deg. C
ohms
L
Length
mm
W
Width
mm
H
Height
mm
Part
Number
100/10001.71.250.9PXX••ӨA
100/500/10002.32.10.9PXX••ӨB
100/500/10003.92.10.9PXX••ӨC
1000/20005.92.10.9PXX••ӨD
100/500/10009.51.90.9PXX••ӨE

Part numbers - example:
RTD 1000 Ohm at 0 C, Class B, Temp -70 to 500 C, Size 1.7 x 1.25 x 0.9 mm = Part No.

P100BMA

PXX••ӨA
Resistance value at 0°C calibrated 1mm from end of lead wire.
•• - Tolerance
0B = DIN Class B
03 = 1/3 DIN Class B 0 to +150 Deg C
0A = Class A -50 to +300 Deg C
XX - Resistance Value
100 ohm XX=01
500 ohm XX=05
1000 ohm XX=10
2000 ohm XX=20

Ө Temperature Range
* L = -50 to + 400 Deg C
M= -70 to + 500 Deg C
* H= -70 to + 600 Deg C

*Check for Availability

Reference Table for Pt RTD Elements

°CΩ
°CΩ
°CΩ
-200
-190
-180
-170
-160
-150
-140
-130
-120
-110
-100
-90
-80
-70
-60
-50
-40
-30
-20
-10
0
+10
+20
+30
+40
+50
+60
+70
+80
+90
+100
+110
+120
+130
+140
18.52
22.83
27.10
31.34
35.34
39.72
43.88
48.00
52.11
56.19
60.26
64.30
68.33
72.33
76.33
80.31
84.27
88.22
92.16
96.09
100.00
103.90
107.79
111.67
115.54
119.40
123.24
127.08
130.90
134.71
138.51
142.29
146.07
149.83
153.58
+150
+160
+170
+180
+190
+200
+210
+220
+230
+240
+250
+260
+270
+280
+290
+300
+310
+320
+330
+340
+350
+360
+370
+380
+390
+400
+410
+420
+430
+440
+450
+460
+470
+480
+490
157.33
161.05
164.77
168.48
172.17
175.86
179.53
183.19
186.84
190.47
194.10
197.71
201.31
204.90
208.48
212.05
215.61
219.15
222.68
226.21
229.72
233.21
236.70
240.18
243.64
247.09
250.53
253.96
257.38
260.78
264.18
267.56
270.93
274.29
277.64
+500
+510
+520
+530
+540
+550
+560
+570
+580
+590
+600
280.98
284.30
287.62
290.92
294.21
297.49
300.75
304.01
307.25
310.49
313.71

Reference
Tables are
available in
5
& 1°C
increments
upon
request.

The permissible deviations for platinum resistance elements are determined by the following equations (in accordance with IEC 751,2: 1995- 07 [DIN EN 60751: 1996-07]):

Tolerance - B Class = ± 0.3˚C at nominal resistance (0˚C)
Tolerance - A Class = ± 0.15˚C at nominal resistance (0˚C)
Tolerance - 1/3 DIN Class B = ± 0.1˚C at nom. resistance (0˚C)

Tolerance
Temp
Deg. C
Class AClass B
Ω°CΩ°C
-200
-100
0
100
200
300
400
500
600
650
700
800
850
±0.24
±0.14
±0.06
±0.13
±0.20
±0.27
±0.33
±0.38
±0.43
±0.46
±0.55
±0.35
±0.15
±0.35
±0.55
±0.75
±0.95
±1.15
±1.35
±1.45
±0.56
±0.32
±0.12
±0.30
±0.48
±0.64
±0.79
±0.93
±1.06
±1.13
±1.17
±1.28
±1.34
±1.3
±0.8
±0.3
±0.8
±1.3
±1.8
±2.3
±2.8
±3.3
±3.6
±3.8
±4.3
±4.6

Pt RTD Element Tolerance Graph

RTD Temperature Sensor

Nominal Resistance: 100 ohms @ °C

For Nominal resistance values other than 100 Ω @ °C resistance
values from the table are corrected using the equation R0 X10-2 where R0 = nominal resistance at 0°C.

  • Mean temperature coefficient between 0 and 100°C = 3.85 x 10-3 x K-1 (in accordance with IEC 751,2:1995-07 [DIN EN 60751;1996-07])
  • Calculation of Resistance values:
    Equations acc. to IEC 751,2: 1995-07 (DIN EN 60751: 1996-07)
    Temperature range from -200 to 0°C:
    R† + R0 (1 +A† +B†2 + C(† - 100°C) †3]
    Temperature range from 0 to +850°C:
    R† + R0 (1 + A† + B†2)
    Where: A = 3.9083 x 10-3°C-1; B=-5.775 x 10-7 °C-2; C=-4.183 x 10-12 °C-4
    R† is the resistance in Ω at temperature †
    † is the temperature t in °C
  • Resistance values from -200 to -250°C were obtained by fixed point measurement

Pt RTD Element Response Time Table

Part Number Response time in seconds Self Heating

ice water 0C
in K/mW

Water — v=0.4 m/s flow Air — v=2 m/s flow
T 0.5 T 0.9 T 0.5 T 0.9
PXXllnA 0.0 0.12 2.2 7.0 0.6
PXXllnB 0.0 0.15 3.0 10.0 0.4
PXXllnC 0.0 0.20 3.2 11.0 0.3
PXXllnD 0.0 0.25 3.7 11.5 0.3
PXXllnE 0.10 0.30 4.0 12.0 0.2

 

For more information on RTD temperature sensors or to speak with one of our knowledgeable professionals, please feel free to Contact Us.

 

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