Temperature Sensors - RTD (Resistance Temperature Detector)

Part Number	Description / PDF	Quantity
SA50101528 Delta Electronics	500/385/B F3X6 CERAMIC TUBE(NI W	752
32208548 Heraeus Nexensos USA	SENSOR RTD 100OHM 0.3% 2SIP	806
NB-PTCO-032 TE Connectivity Measurement Specialties	SENSOR RTD 100OHM 0.001% 2SIP	627
PTS080502B100RPU00 Vishay / Beyschlag	SENSOR RTD 100OHM 0805	0
RTDW3R-1KF8 Riedon	SENSOR RTD 1K OHM 1% 3500PPM	50
32207595 Heraeus Nexensos USA	SENSOR RTD 1KOHM 0.3% 1206	13363
TS2089 ifm Efector	TEMPERATURE SENSOR FOR CONNECTIO	0
32208414 Heraeus Nexensos USA	SENSOR RTD 500OHM 0.3% 2SIP	431
R-8204 TE Connectivity Measurement Specialties	SENSOR RTD 100OHM 0.5%	96
PTS1206M1B1K00PU00 Vishay / Beyschlag	SENSOR RTD 1KOHM 1206	0
P1K0.1206.2P.B.S Innovative Sensor Technology	1000 OHM, SMD 1206, -50 C TO +15	0
USW4461 Wickmann / Littelfuse	RTD 100 OHM 0.06% RING LUG	0
P0K1.202.3K.B.010 Innovative Sensor Technology	100 OHM, 2.0 X 2.0 MM, -200 C TO	0
USW3866 Wickmann / Littelfuse	SENSOR RTD 1KOHM 0.12% RING LUG	0
NB-PTCO-049 TE Connectivity Measurement Specialties	PTFB101BG00:PT100,2.0X10.0,B	0
P0K1.232.6W.Y.010 Innovative Sensor Technology	100 OHM, 2.3 X 2.0 MM, -200 C TO	0
FST08-B-100E Ohmite	SENSOR RTD 100OHM 0805	0
P1K0.0805.2P.B.S Innovative Sensor Technology	1000 OHM, SMD 0805, -50 C TO +15	0
NB-PTCO-101 TE Connectivity Measurement Specialties	PTFF102B1G0:PT1000,2.0X4.0,B	0
USW4456 Wickmann / Littelfuse	RTD 1K OHM 0.06% NPT 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