Temperature Sensors Platinum RTDs FEATURES Linear resistance temp
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Temperature Sensors Platinum RTDs
FEATURES Linear resistance temperature Accurate Interchangeable Excellent stability Small size Printed circuit mountable Ceramic package TYPICAL APPLICATIONS HVAC room, duct refrigerant equipment Instrument probe assemblies Electronic assemblies temperature compensation Process control temperature regulation ORDER GUIDE
HEL-776-A HEL-777-A Molded pkg. 0.100 lead spacing Molded pkg. 0.100 lead spacing 1000 0.00375 0.00385 ±0.2% Resistance Trim (Standard) ±0.1% Resistance Trim (Optional)
HEL-776/HEL-777
HEL-776 HEL-777 platinum RTDs designed measure temperatures from -55° +150°C (-67° 302°F) printed circuit boards, temperature probes, other lower temperature applications. Solderable leads 0.050 0.100 spacing provide strong connections wires printed circuits. 1000 alpha version, provides greater sensitivity signal-tonoise. Both ideal temperature sensing.
Fig. Wheatstone Bridge 2-Wire Interface
MOUNTING DIMENSIONS (for reference only) mm/in. HEL-776-A
Fig. Linear Output Voltage
Temperature
Fig. Adjustable Point (Comparator) Interface
HEL-777-A
CAUTION
PRODUCT DAMAGE
inherent design this component causes sensitive electrostatic discharge (ESD). prevent ESD-induced damage and/or degradation, take normal precautions when handling this product.
Honeywell
Sensing Control 1-800-537-6945
1-815-235-6847 International 1-800-737-3360 Canada
Temperature Sensors Platinum RTDs
FUNCTIONAL BEHAVIOR R0(1+AT+BT2-100CT3+CT4) Resistance temperature (°C) Resistance Temperature CT<0 1002 ACCURACY TEMPERATURE Tolerance Temperature (°C) -200 -100 CONSTANTS Alpha, (°C-1) 0.00375 ±0.000029 1.605 0.009 0.16 T>0°C 0.003850 ±0.000010 1.4999 0.007 0.10863 1000 11.0 12.5 15.1
HEL-776/HEL-777
Standard ±0.2% (°C)
Optional ±0.1% 10.4 RTD. (°C)
1004
Delta, (°C) Beta, (°C-1) (°C-2) (°C-4) Both (°C)
RTD. Divide
RESISTANCE TEMPERATURE CURVE
SPECIFICATIONS Sensor Type Temperature Range Temperature Accuracy Base Resistance Interchangeability, Linearity Time Constant Operating Current Stability Self Heating Insulation Resistance Construction Lead Material
Honeywell
Thin film platinum RTD:
1000 0°C; alpha 0.00375 0°C; alpha 0.00385
Teflon: -200° +260°C (-320° +500°F) Fiberglass: -75° +540°C (-100° +1000°F) ±0.5°C 0.8% temperature ±0.2% trim), whichever greater ±0.3°C 0.6% temperature ±0.1% trim), whichever greater (optional) 1000 1000 (±0.2%) (±0.1%) (±0.2%) (±0.2%) (optional)
±0.1% full scale temperatures spanning -40° 125°C ±2.0% full scale temperatures spanning -75° 540°C <0.5 sec, 0.85 inch O.D. water ft/sec; <1.0 sec, 0.85 inch O.D. still water maximum self heating errors <1°C; recommended <0.25°C/year; 0.05°C years occupied environments <15mW/°C 0.85 O.D. typical 25°C Alumina case; Epoxy potting (Teflon leads); Ceramic potting (fiberglass leads) Nickel coated stranded copper, Teflon Fiberglass insulated
Sensing Control 1-800-537-6945 1-815-235-6847 International 1-800-737-3360 Canada
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