Temperature Sensors - RTD (Resistance Temperature Detector)

Part Number	Description / PDF	Quantity
RTDW3R-500RF8 Riedon	SENSOR RTD 500 OHM 1% 3500PPM	50
5016951 Heraeus Nexensos USA	TEMP SENSOR RTD 1000 OHM	99
32205113 TE Connectivity Measurement Specialties	SENSOR RTD 100OHM PROBE	0
35110016 Heraeus Nexensos USA	TEMP SENSOR RTD 1000 OHM	58
R-8580-362 TE Connectivity Measurement Specialties	SENSOR RTD 100OHM PROBE	17
PTS120602B100RPU00 Vishay / Beyschlag	SENSOR RTD 100OHM 1206	0
NB-PTCO-186 TE Connectivity Measurement Specialties	SENSOR RTD 100OHM 0.001% 2SIP	811
32207582 Heraeus Nexensos USA	SENSOR RTD 1KOHM 0.15% 2SIP	1124
TT-PT100B-2050-11-AUNI TEWA Sensors LLC	PT RTD 100 OHM CLASS B	611
PTS120601B500RPU00 Vishay / Beyschlag	SENSOR RTD 500OHM 1206	0
PPG501JA Wickmann / Littelfuse	SENSOR RTD 500OHM 0.06% RADIAL	1061
32206109 Heraeus Nexensos USA	SENSOR RTD 100OHM 0.15% PROBE	11
NB-PTCO-161 TE Connectivity Measurement Specialties	SENSOR RTD 100OHM 0.001% 2SIP	751
NB-PTCO-170 TE Connectivity Measurement Specialties	SENSOR RTD 1KOHM 0.001% 2SIP	900
PPG101A6 Wickmann / Littelfuse	SENSOR RTD 100OHM 0.06% RADIAL	52
PTS1206M2B100RP500 Vishay BC Components/Beyshlag/Draloric	PTS 1206-2B AT P5 100R	0
32206913 Heraeus Nexensos USA	SENSOR RTD 100OHM 0.3% PROBE	80
RTDS1206B-500R8 Riedon	SENSOR RTD 500 OHM DIN CLASS B 1	967
SB0920 TE Connectivity Measurement Specialties	SENSOR RTD 100OHM PROBE	0
SA50100594 Delta Electronics	500/385/B 2X3 CHIP SENSOR(NI WIR	111

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