Temperature Sensors
HEL-700
Platinum RTDs
FUNCTIONAL BEHAVIOR
ACCURACY VS TEMPERATURE
2
3
4
RT ⍧ R0(1+AT+BT −100CT +CT )
RT ⍧ Resistance (ȉ) at temperature T (°C)
R0 ⍧ Resistance (ȉ) at 0°C
HEL-700platinumRTDsareavailableintwobaseresistancetrim
tolerances: ±0.2% or ±0.1%. The corresponding resistance
interchangeability and temperature accuracy for these toler-
ances are:
T ⍧ Temperature in °C
A ⍧ Ȋ + Ȋ Ȏ
B ⍧ − Ȋ Ȏ
C
T<0 ⍧ − Ȋ ȋ
Tolerance
Standard ±0.2%
Optional ±0.1%
2
4
100
100
100
Temperature
±ǵR*
(ȉ)
±ǵT
(°C)
±ǵR*
(ȉ)
±ǵT
(°C)
(°C)
CONSTANTS
−200
−100
0
6.8
2.9
1.6
0.8
0.5
0.8
1.6
2.4
3.2
4.0
4.8
5.1
2.4
1.0
2.2
4.3
6.2
8.3
9.6
10.4
1.2
0.6
0.3
0.6
1.2
1.8
2.5
3.0
3.3
-1
Alpha, Ȋ (°C )
0.00375
0.003850
±0.000029
±0.000010
2.0
Delta, Ȏ (°C)
Beta, ȋ (°C)
1.605 ± 0.009
1.4999 ± 0.007
100
200
300
400
500
600
2.9
0.16
0.10863
5.6
-1
-3
-3
A (°C )
3.81×10
3.908×10
8.2
-2
-7
-7
B (°C )
−6.02×10
−5.775×10
11.0
12.5
15.1
-4
-12
-12
C (°C )
−6.0×10
−4.183×10
Both ȋ ⍧ 0 and C ⍧ 0 for T>0°C
*1000ȉ RTD. Divide ǵR by 10 for 100ȉ RTD.
RESISTANCE VS TEMPERATURE CURVE
CAUTION
PRODUCT DAMAGE
Theinherentdesignofthiscomponentcausesittobesensitive
to electrostatic discharge (ESD). To prevent ESD-induced
damage and/or degradation, take normal ESD precautions
when handling this product.
SPECIFICATIONS
Sensor Type
Thin film platinum RTD;
R0 ⍧ 1000 ȉ @ 0°C; alpha ⍧ 0.00375 ȉ/ȉ/°C
R0 ⍧ 100 ȉ @ 0°C; alpha ⍧ 0.00385 ȉ/ȉ/°C
Temperature Range
−200 to +540°C (−300 to +1000°F)
Temperature Accuracy
±0.5°C or 0.8% of temperature, °C (R0 ±0.2% trim), whichever is greater
±0.3°C or 0.6% of temperature, °C (R0 ±0.1% trim), whichever is greater (optional)
Base Resistance and
Interchangeability, R0 ± ǵR0
1000 ± 2 ȉ (±0.2%) @ 0°C
1000 ± 1 ȉ (±0.1%) @ 0°C (optional)
Linearity
±0.1% of full scale for temperatures spanning −40° to +125°C
±2.0% of full scale for temperatures spanning −200° to +540°C
Time Constant
Operating Current
<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
Stability
Better than 0.25°C/year: 0.05°C/5 years for occupied environments
Self-Heating
0.3 mW/°C
Insulation Resistance
Case Material
>50 Mȉ @ 50 VDC @ 25°C
99% alumina support, vapor deposited alumina passified resistance portion, refractory glass
passified overall
Lead Material – Ribbon
Platinum ribbon, 0.002 × 0.010 × 0.16 in. long nominal
Lead Pull Strength – Ribbon
200 grams nominal pulling up from surface
86
Honeywell ɀ MICRO SWITCH Sensing and Control ɀ1-800-537-6945 USA ɀ ⍣1-815-235-6847 International ɀ1-800-737-3360 Canada
HONEYWELL [ Honeywell ]
