Temperature Sensors - RTD (Resistance Temperature Detector)

Part Number	Description / PDF	Quantity
31600393 Heraeus Nexensos USA	TEMP SENSOR RTD 100 OHM	121
700-101BAB-B00 Honeywell Sensing and Productivity Solutions	SENSOR RTD 100OHM 0.12% RADIAL	0
ERTD2A102C EI Sensor Technologies	RTD ELEMENT, 1K OHM +/- 0.06%, +	248
ERP10015 EI Sensor Technologies	RTD PROBE, THREADED, 100 OHM +/-	8
NB-PTCO-187 TE Connectivity Measurement Specialties	SENSOR RTD 100OHM 0.001% 2SIP	0
PTS080501B100RPU00 Vishay / Beyschlag	SENSOR RTD 100OHM 0805	0
PTS120601B500RP100 Vishay / Beyschlag	SENSOR RTD 500OHM 1% 1206	0
SB0794 TE Connectivity Measurement Specialties	SENSOR RTD 100OHM PROBE	47
PTS1206M1B1K00P500 Vishay BC Components/Beyshlag/Draloric	PTS 1206-B AT P5 1K0	0
PTS080502B100RP100 Vishay / Beyschlag	SENSOR RTD 100OHM 0805	0
HEL-716-U-0-12-00 Honeywell Sensing and Productivity Solutions	SENSOR RTD 1KOHM 0.2% PROBE	142
TS5089 ifm Efector	TEMPERATURE SENSOR FOR CONNECTIO	0
RTDS0805B-1K8 Riedon	SENSOR RTD 1K OHM DIN CLASS B 08	993
PTS0603M2B100RP100 Vishay / Beyschlag	SENSOR RTD 100OHM 0603	0
PTS120602B100RP100 Vishay / Beyschlag	SENSOR RTD 100OHM 1206	0
TT-PT-1000B-2050-11-AUNI TEWA Sensors LLC	PT RTD 1000 OHM CLASS B	1114
RTDW1R-100RF8 Riedon	SENSOR RTD 100 OHM 1% 3500PPM	16
35110014 Heraeus Nexensos USA	TEMP SENSOR RTD 1000 OHM	64
PTS120601B100RP100 Vishay / Beyschlag	SENSOR RTD 100OHM 1% 1206	989
TT-PT100A-2050-11-AUNI TEWA Sensors LLC	PT RTD 100 OHM CLASS A	1013

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