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HEL-776-A-U-1

P1-P3
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Sensing and Control
Honeywell Inc.
11 West Spring Street
Freeport, Illinois 61032
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Temperature Sensors HEL-776/HEL-777
Platinum RTDs
Honeywell 1 MICRO SWITCH Sensing and Control 1 1-800-537-6945 USA 1F1-815-235-6847 International 1 1-800-737-3360 Canada
91
FEATURES
1 Linear resistance vs temperature
1 Accurate and Interchangeable
1 Excellent stability
1 Small size
1 Printed circuit mountable
1 Ceramic SIP package
TYPICAL APPLICATIONS
1 HVAC – room, duct and refrigerant
equipment
1 Instrument and probe assemblies
1 Electronic assemblies – temperature
compensation
1 Process control – temperature
regulation
HEL-776 and HEL-777 platinum RTDs are
designed to measure temperatures from
−55° to +150°C (−67° to 302°F) in print-
ed circuit boards, temperature probes, or
other lower temperature applications.
Solderable leads in 0.050N or 0.100N spac-
ing provide strong connections for wires
or printed circuits.
The 1000V, 375 alpha version, provides
10x greater sensitivity and signal-to-
noise. Both are ideal for air temperature
sensing.
ORDER GUIDE
HEL-776-A Molded SIP pkg. 0.100N lead spacing
HEL-777-A Molded SIP pkg. 0.100N lead spacing
-U 1000V, 0.00375 V/V/°C
-T 100V, 0.00385 V/V/°C
-0 ±0.2% Resistance Trim (Standard)
-1 ±0.1% Resistance Trim (Optional)
MOUNTING DIMENSIONS (for reference only) mm/in.
HEL-776-A
HEL-777-A
Fig. 1: Wheatstone Bridge 2-Wire Interface
Fig. 2: Linear Output Voltage
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.
Temperature
Temperature Sensors HEL-776/HEL-777
Platinum RTDs
92
Honeywell 1 MICRO SWITCH Sensing and Control 1 1-800-537-6945 USA 1F1-815-235-6847 International 1 1-800-737-3360 Canada
FUNCTIONAL BEHAVIOR
R
T
J R
0
(1+AT+BT
2
−100CT
3
+CT
4
)
RT J Resistance (V) at temperature T (°C)
R
0
J Resistance (V) at 0°C
T J Temperature in °C
A J a +
ad B J − ad C
T<0
J −ab
100 100
2
100
4
CONSTANTS
Alpha, a (°C
-1
) 0.00375 0.003850
±0.000029 ±0.000010
Delta, d (°C) 1.605 ± 0.009 1.4999 ± 0.007
Beta, b (°C) 0.16 0.10863
A (°C
-1
) 3.81×10
-3
3.908×10
-3
B (°C
-2
) −6.02×10
-7
−5.775×10
-7
C (°C
-4
) −6.0×10
-12
−4.183×10
-12
Both b J 0 and C J 0 for T>0°C
ACCURACY VS TEMPERATURE
Tolerance Standard ±0.2% Optional ±0.1%
Temperature ±DR* ±DT ±DR* ±DT
(°C) (V)(°C) (V)(°C)
−200 6.8 1.6 5.1 1.2
−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.
RESISTANCE VS TEMPERATURE CURVE
SPECIFICATIONS
Sensor Type Thin film platinum RTD: R
0
J 1000 V @0°C; alpha J 0.00375 V/V/°C
R
0
J 100 V @0°C; alpha J 0.00385 V/V/°C
Temperature Range
−55° to +150°C (−76° to +302°F)
Temperature Accuracy ±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)
Base Resistance and
Interchangeability, R
0
± DR
0
1000 ± 2 V (±0.2%) @ 0°C or 100 ± 0.2 V (±0.2%) @ 0°C
1000 ± 1 V (±0.1%) @ 0°C or 100 ± 0.1 V (±0.1%) @ 0°C (optional)
Linearity
±0.1% of full scale for temperatures spanning −40° to 125°C
Time Constant
<10 seconds in air at 10 ft/sec
Operating Current 2 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
<15mW/°C typical
Insulation Resistance >50 MV @ 50 VDC @ 25°C
Construction
Plastic case, PLASKON 3300SH
Lead Material
Copper alloy 194 solder dipped tin silver
P1-P3

HEL-776-A-U-1

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Description:
Industrial Temperature Sensors 1000 Ohm, SIP .1% Linearity
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