Temperature Sensors
Platinum RTDs
FUNCTIONAL BEHAVIOR
R
T
R
0
(1+AT+BT
2
−100CT
3
+CT
4
)
RT Resistance ( ) at temperature T (°C)
R
0
Resistance ( ) at 0°C
T Temperature in
°C
A
+
B
−
C
T<0
2
100
100
CONSTANTS
Alpha,
(°C
-1
)
0.00375
±0.000029
1.605
±
0.009
0.16
3.81×10
-3
−6.02×10
-7
−6.0×10
-12
0 and C
0 for T>0°C
*1000
HEL-700
ACCURACY VS TEMPERATURE
HEL-700 platinum RTDs are available in two base resistance trim
tolerances:
±0.2%
or
±0.1%.
The corresponding resistance
interchangeability and temperature accuracy for these toler-
ances are:
Tolerance
Temperature
(°C)
−200
−100
0
100
200
300
400
500
600
Standard
±0.2%
±
R*
( )
6.8
2.9
2.0
2.9
5.6
8.2
11.0
12.5
15.1
±
T
(°C)
1.6
0.8
0.5
0.8
1.6
2.4
3.2
4.0
4.8
RTD.
−
100
4
Optional
±0.1%
±
R*
( )
5.1
2.4
1.0
2.2
4.3
6.2
8.3
9.6
10.4
±
T
(°C)
1.2
0.6
0.3
0.6
1.2
1.8
2.5
3.0
3.3
0.003850
±0.000010
1.4999
±
0.007
0.10863
3.908×10
-3
−5.775×10
-7
−4.183×10
-12
Delta,
(°C)
Beta,
A
(°C
-1
)
B
(°C
-2
)
C
(°C
-4
)
Both
(°C)
RESISTANCE VS TEMPERATURE CURVE
RTD. Divide R by 10 for 100
CAUTION
PRODUCT DAMAGE
The inherent design of this component causes it to be sensitive
to electrostatic discharge (ESD). To prevent ESD-induced
damage and/or degradation, take normal ESD precautions
when handling this product.
SPECIFICATIONS
Sensor Type
Temperature Range
Temperature Accuracy
Base Resistance and
Interchangeability, R
0
±
R
0
Linearity
Time Constant
Operating Current
Stability
Self-Heating
Insulation Resistance
Case Material
Lead Material – Ribbon
Lead Pull Strength – Ribbon
86
Thin film platinum RTD;
R
0
1000 @ 0°C; alpha 0.00375 / /°C
R
0
100 @ 0°C; alpha 0.00385 / /°C
−200
to
+540°C
(−300 to
+1000°F)
±0.5°C
or 0.8% of temperature,
°C
(R
0
±0.2%
trim), whichever is greater
±0.3°C
or 0.6% of temperature,
°C
(R
0
±0.1%
trim), whichever is greater (optional)
1000
±
2
1000
±
1
(±0.2%) @ 0°C
(±0.1%) @ 0°C (optional)
±0.1%
of full scale for temperatures spanning
−40°
to
+125°C
±2.0%
of full scale for temperatures spanning
−200°
to
+540°C
<0.15
seconds in water @ 3 ft./sec.
<1
second on metal surfaces:
<4
seconds in air @ 10 ft./sec.
2 mA max. For self-heating errors of 1°C
1 mA recommended
Better than 0.25°C/year: 0.05°C/5 years for occupied environments
0.3 mW/°C
>50
M
@ 50 VDC @ 25°C
99% alumina support, vapor deposited alumina passified resistance portion, refractory glass
passified overall
Platinum ribbon, 0.002
×
0.010
×
0.16 in. long nominal
200 grams nominal pulling up from surface
1-815-235-6847 International 1-800-737-3360 Canada
Honeywell MICRO SWITCH Sensing and Control 1-800-537-6945 USA
HONEYWELL [ HONEYWELL SOLID STATE ELECTRONICS CENTER ]
