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Sensing and Control
Honeywell Inc.
11 West Spring Street
Freeport, Illinois 61032
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Temperature Sensors
Platinum RTDs
HEL-700
FEATURES
1 Linear resistance vs temperature
1 Accurate and Interchangeable
1 Excellent stability
1 Small for fast response
1 Wide temperature range
1 3-packaging options
HEL-700 Thin Film Platinum RTDs (Resistance Temperature Detectors) provide
excellent linearity, accuracy, stability and
interchangeability. Resistance changes
linearly with temperature. Laser trimming
provides ±0.3°C interchangeability at
25°C.
TYPICAL APPLICATIONS
1 HVAC - room, duct and refrigerant
equipment
1 Electronic assemblies - thermal management, temperature compensation
1 Process control - temperature regulation
1000V, 375 alpha provides 10X greater
sensitivity and signal-to-noise. Both
1000V and 100V provide interchangeabilities of ±0.6°C or better from -100°C to
100C, and ±3.0°C at 500°C.
MOUNTING DIMENSIONS (for reference only)
HEL-700 Ribbon Lead
ORDER GUIDE
HEL-700
Thin Film Platinum RTD
-U
-T
1000V, 0.00375 V/V/°C
100V, 0.00385 V/V/°C DIN Standard
-0
-1
±0.2% Resistance Trim (Standard)
±0.1% Resistance Trim (Optional)
-A
Radial Ribbon Lead
-B
Radial Chip
-C
SMT Axial Flip Chip (1000V
ONLY)
Fig. 1: Linear Output Voltage
HEL-700 Radial Chip
Temperature
Fig. 2: Adjustable Point (Comparator) Interface
HEL-700 SMT (Axial) Flip Chip
Honeywell 1 MICRO SWITCH Sensing and Control 1 1-800-537-6945 USA 1 F1-815-235-6847 International 1 1-800-737-3360 Canada
85
Temperature Sensors
Platinum RTDs
HEL-700
FUNCTIONAL BEHAVIOR
RT J R0(1+AT+BT2−100CT3+CT4)
RT J Resistance (V) at temperature T (°C)
R0 J Resistance (V) at 0°C
T J Temperature in °C
AJa+ ad
BJ −ad
CT0°C
RESISTANCE VS TEMPERATURE CURVE
−100
2.9
0.8
2.4
0.6
0
2.0
0.5
1.0
0.3
100
2.9
0.8
2.2
0.6
200
5.6
1.6
4.3
1.2
300
8.2
2.4
6.2
1.8
400
11.0
3.2
8.3
2.5
500
12.5
4.0
9.6
3.0
600
15.1
4.8
10.4
3.3
*1000V RTD. Divide DR by 10 for 100V RTD.
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
Thin film platinum RTD;
R0 J 1000 V @ 0°C; alpha J 0.00375 V/V/°C
R0 J 100 V @ 0°C; alpha J 0.00385 V/V/°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 ± DR0
1000 ± 2 V (±0.2%) @ 0°C
1000 ± 1 V (±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
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