Temperature Sensors - RTD (Resistance Temperature Detector)

Part Number	Description / PDF	Quantity
32207605-4K Heraeus Nexensos USA	SENSOR RTD 100OHM SMD 0805	0
TT4-PT100B-T300-1500 TEWA Sensors LLC	THERMISTOR NTC PROBE	46
TT9291 ifm Efector	TEMPERATURE SENSOR FOR CONNECTIO	0
NB-PTCO-165 TE Connectivity Measurement Specialties	SENSOR RTD 1KOHM 0.001% 2SIP	3873
NB-PTCO-188 TE Connectivity Measurement Specialties	SENSOR RTD 100OHM 0.001% 2SIP	389
PTS0603M1B100RPU00 Vishay / Beyschlag	SENSOR RTD 100OHM 0603	0
32207400 Heraeus Nexensos USA	SENSOR RTD 100OHM 0.3% 2SIP	667
SA10100627 Delta Electronics	100/385/B 1.7X2.8 CHIP SENSOR(NI	70
NB-PTCO-058 TE Connectivity Measurement Specialties	SENSOR RTD 100OHM 0.001% 2SIP	898
702-101BBB-A00 Honeywell Sensing and Productivity Solutions	SENSOR RTD 100OHM 0.12% 2SMD	0
32207695 Heraeus Nexensos USA	SENSOR RTD 1KOHM 0.3% 2SIP	1077
R-5156 TE Connectivity Measurement Specialties	300F G2C 12.00 3S B 096 C	7
PTS0805M2B100RPU00 Vishay / Beyschlag	SENSOR RTD 100OHM 0805	0
SB0870 TE Connectivity Measurement Specialties	SENSOR RTD 100OHM PROBE	15
32206456 Heraeus Nexensos USA	SENSOR RTD 100OHM 0.15% PROBE	0
SB0789 TE Connectivity Measurement Specialties	SENSOR RTD 100OHM PROBE	50
700-102AAC-B00 Honeywell Sensing and Productivity Solutions	SENSOR RTD 1KOHM PROBE	38
PTS1206M1B500RP500 Vishay BC Components/Beyshlag/Draloric	PTS 1206-B AT P5 500R	0
PTS1206M2B100RPU00 Vishay / Beyschlag	SENSOR RTD 100OHM 1206	0
HEL-711-U-1-12-00 Honeywell Sensing and Productivity Solutions	SENSOR RTD 1KOHM 0.2% PROBE	0

Temperature Sensors - RTD (Resistance Temperature Detector)

1. Overview

Resistance Temperature Detectors (RTDs) are temperature sensors that operate based on the principle of electrical resistance variation in metals with temperature changes. Platinum is the most commonly used material due to its stability and linear resistance-temperature relationship. RTDs provide precise and repeatable temperature measurements, making them critical in industrial process control, scientific research, and quality assurance systems.

2. Major Types and Functional Classification

Type	Functional Characteristics	Application Examples
Platinum RTD (Pt100/Pt1000)	High accuracy ( 0.1 C), wide temperature range (-200 C to 850 C)	Industrial process control, HVAC systems
Copper RTD	Lower cost, limited range (-50 C to 150 C)	Motors temperature monitoring
Nickel RTD	High sensitivity but non-linear output	Aerospace applications
Thin-Film RTD	Compact size, fast response time	Medical devices, semiconductor manufacturing
Wire-Wound RTD	High vibration resistance, mechanical durability	Power generation plants

3. Structure and Components

Typical RTD construction includes:

Sensing Element: Platinum/copper/nickel wire or thin-film deposit
Lead Wires: 2-wire (cost-effective), 3-wire (compensated), or 4-wire (high precision)
Insulation: Ceramic or glass encapsulation for electrical isolation
Protective Sheath: Stainless steel or Inconel for environmental protection
Connection Head: Terminal for wire connections and mounting

4. Key Technical Specifications

Parameter	Significance	Typical Values
Temperature Range	Determines operational limits	-200 C to 850 C (Pt100)
Accuracy Class	Defines measurement precision	Class A ( 0.15 C), Class B ( 0.3 C)
Response Time	Critical for dynamic temperature tracking	0.5-20 seconds
Electrical Resistance	Affects signal transmission quality	100 (Pt100), 1000 (Pt1000)
Self-Heating Error	Impact of excitation current on measurement	<0.02 C/mW

5. Application Fields

Industrial: Chemical reactors, boiler systems, turbine monitoring
Healthcare: MRI machine temperature regulation
Automotive: Battery management systems in EVs
Food Processing: Pasteurization temperature control
Energy: Nuclear reactor coolant monitoring

6. Leading Manufacturers and Products

Manufacturer	Representative Product	Key Features
Honeywell	TD Series	IP67 rating, -50 C to 250 C range
Omega Engineering	PX Series	Explosion-proof design, Class A accuracy
Yokogawa	YTA Series	HART protocol support, 4-wire configuration
ABB	MT Series	Digital signal processing, SIL2 compliance

7. Selection Guidelines

Key considerations:

Temperature range requirements
Accuracy vs. cost trade-offs
Environmental factors (vibration, corrosion)
Installation constraints (space, mounting type)
Signal transmission distance (wire resistance impact)

Industry Trends

Emerging developments include:

Miniaturization for embedded applications
Wireless RTD sensors for IoT integration
Advanced materials (ceramic matrix composites)
AI-based self-calibration features
Increased adoption in renewable energy systems