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Page 2
Temperature SensorsHEL-700
Platinum RTDs
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
TYPICAL APPLICATIONS
1 HVAC - room, duct and refrigerant
equipment
1 Electronic assemblies - thermal man-
agement, temperature compensation
1 Process control - temperature regu-
lation
MOUNTING DIMENSIONS (for reference only)
HEL-700 Ribbon Lead
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.
1000V, 375 alpha provides 10X greater
sensitivity and signal-to-noise. Both
1000V and 100V provide interchange-
abilities of ±0.6°C or better from -100°C to
100C, and ±3.0°C at 500°C.
ORDER GUIDE
HEL-700Thin Film Platinum RTD
-U1000V, 0.00375 V/V/°C
-T100V, 0.00385 V/V/°C DIN Standard
-0±0.2% Resistance Trim (Standard)
-1±0.1% Resistance Trim (Optional)
-ARadial Ribbon Lead
-BRadial Chip
-CSMT Axial Flip Chip (1000V
ONLY)
HEL-700 Radial Chip
HEL-700 SMT (Axial) Flip Chip
Fig. 1: Linear Output Voltage
Temperature
Fig. 2: Adjustable Point (Comparator) Interface
Honeywell1 Sensing and Control11-800-537-6945 USA1F1-815-235-6847 International11-800-737-3360 Canada
85
Page 3
Temperature SensorsHEL-700
Platinum RTDs
FUNCTIONAL BEHAVIOR
R
J R0(1+AT+BT2−100CT3+CT4)
T
RT J Resistance (V) at temperature T (°C)
R
J Resistance (V) at 0°C
0
T J Temperature in °C
A J a +
adB J − adC
100100
2
J −ab
T<0
100
CONSTANTS
Alpha, a (°C
-1
)0.003750.003850
±0.000029±0.000010
Delta, d (°C)1.605 ± 0.0091.4999 ± 0.007
Beta, b (°C)0.160.10863
-1
A (°C
)3.81×10
-2
B (°C
)−6.02×10
-4
C (°C
)−6.0×10
-3
-7
-12
3.908×10
−5.775×10
−4.183×10
-3
-7
-12
Both b J 0 and C J 0 for T>0°C
RESISTANCE VS TEMPERATURE CURVE
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 tolerances are:
4
ToleranceStandard ±0.2%Optional ±0.1%
Temperature±DR*±DT±DR*±DT
(°C)(V)(°C)(V)(°C)
−2006.81.65.11.2
−1002.90.82.40.6
02.00.51.00.3
1002.90.82.20.6
2005.61.64.31.2
3008.22.46.21.8
40011.03.28.32.5
50012.54.09.63.0
60015.14.810.43.3
*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 TypeThin film platinum RTD;
R
J 1000 V @0°C; alpha J 0.00375 V/V/°C
0
R
J 100 V @0°C; alpha J 0.00385 V/V/°C
0
Temperature Range−200 to +540°C (−300 to +1000°F)
Temperature Accuracy±0.5°C or 0.8% of temperature, °C (R
±0.3°C or 0.6% of temperature, °C (R
Base Resistance and
Interchangeability, R
± DR
0
1000 ± 2 V (±0.2%) @ 0°C
1000 ± 1 V (±0.1%) @ 0°C (optional)
0
±0.2% trim), whichever is greater
0
±0.1% trim), whichever is greater (optional)
0
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<0.15 seconds in water @ 3 ft./sec.
<1 second on metal surfaces: <4 seconds in air @ 10 ft./sec.
Operating Current2 mA max. For self-heating errors of 1°C
1 mA recommended
StabilityBetter than 0.25°C/year: 0.05°C/5 years for occupied environments
Self-Heating0.3 mW/°C
Insulation Resistance>50 MV @ 50 VDC @ 25°C
Lead Material – RibbonPlatinum ribbon, 0.002 × 0.010 × 0.16 in. long nominal
Lead Pull Strength – Ribbon200 grams nominal pulling up from surface
86
Honeywell1 Sensing and Control11-800-537-6945 USA1F1-815-235-6847 International11-800-737-3360 Canada
Page 4
Temperature SensorsHEL-700 Series
Platinum RTDs
FEATURES
1 Linear resistance vs temperature
1 Accurate and Interchangeable
1 Excellent stability
1 Teflon or fiberglass lead wires
1 Wide temperature range
1 Ceramic case material
HEL-700 Series elements are fully assembled, ready to use directly or in probe
assemblies without the need for fragile
splices to extension leads.
The 1000V, 375 alpha version, provides
10X greater sensitivity and signal-tonoise. Optional NIST calibrations im-
prove accuracy to ±0.03°C at 0°C.
Fig. 1: Wheatstone Bridge 2-Wire Interface
Fig. 2: Linear Output Voltage
MOUNTING DIMENSIONS (for reference only)
Fig. 3: Adjustable Point (Comparator) Interface
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.
Honeywell1Sensing and Control11-800-537-6945 USA1F1-815-235-6847 International11-800-737-3360 Canada
Temperature
87
Page 5
Temperature SensorsHEL-700 Series
Platinum RTDs
FUNCTIONAL BEHAVIOR
R
J R0(1+AT+BT2−100CT3+CT4)
T
RT J Resistance (V) at temperature T (°C)
R
J Resistance (V) at 0°C
0
T J Temperature in °C
A J a +
adB J − adC
100100
2
J−ab
T<0
100
4
CONSTANTS
Alpha, a (°C
-1
)0.003750.003850
±0.000029±0.000010
Delta, d (°C)1.605 ± 0.0091.4999 ± 0.007
Beta, b (°C)0.160.10863
-1
A (°C
)3.81×10
-2
B (°C
)−6.02×10
-4
C (°C
)−6.0×10
-3
-7
-12
3.908×10
−5.775×10
−4.183×10
-3
-7
-12
Both b J 0 and C J 0 for T>0°C
RESISTANCE VS TEMPERATURE CURVE
ACCURACY VS TEMPERATURE
ToleranceStandard ±0.2%Optional ±0.1%
Temperature±DR*±DT±DR*±DT
(°C)(V)(°C)(V)(°C)
−2006.81.65.11.2
−1002.90.82.40.6
02.00.51.00.3
1002.90.82.20.6
2005.61.64.31.2
3008.22.46.21.8
40011.03.28.32.5
50012.54.09.63.0
60015.14.810.43.3
*1000V RTD. Divide D by 10 for 100V RTD.
NIST CALIBRATION
NIST traceable calibration provides resistance readings at 1, 2 or
3 standard temperature points to yield a resistance versus temperature curve with 10x better accuracy.
Calibration1 Point2 Point3 Point
T (°C)±DT (°C)±DT (°C)±DT (°C)
-2000.9——
-1000.50.270.15
00.030.030.03
1000.40.110.07
2000.80.20.08
3001.20.336.2
4001.60.58.3
5002.00.89.6
6002.61.210.4
SPECIFICATIONS
Sensor TypeThin film platinum RTD;
R
J 1000 V @0°C; alpha J 0.00375 V/V/°C
0
R
J 100 V @0°C; alpha J 0.00385 V/V/°C
0
Temperature RangeTFE Teflon: −200° to +260°C (−320°to +500°F)
Fiberglass: −75° to +540°C (−100° to +1000°F)
Temperature Accuracy±0.5°C or 0.8% of temperature, °C (R
±0.3°C or 0.6% of temperature, °C (R
Base Resistance and
Interchangeability, R
± DR
0
1000 ± 2 V (±0.2%) @ 0°C
1000 ± 1 V (±0.1%) @ 0°C (optional)
0
±0.2% trim), whichever is greater
0
±0.1% trim), whichever is greater (optional)
0
Linearity±0.1% of full scale for temperatures spanning −40° to +125°C
±2.0% of full scale for temperatures spanning −75° to +540°C
Time Constant<0.5 sec. 0.85 inch O.D. in water at 3 ft/sec; <1.0 sec, 0.85 inch O.D. in still water
Operating Current2 mA maximum for self heating errors of <1°C; 1 mA recommended
Stability<0.25°C/year; 0.05°C per 5 years in occupied environments
Self Heating<15 mW/°C for 0.85 O.D. typical
Insulation Resistance>50 MV at 50 VDC at 25°C