Rosemount PT100 Temperature Sensors: High-Precision Industrial Measurement Solutions

1. What is a Rosemount PT100?

The Rosemount PT100 is a platinum resistance temperature detector (RTD) manufactured by Emerson’s Rosemount brand, designed for high-accuracy temperature measurement in industrial processes.

• Key Features:
  • PT100 Principle: 100Ω at 0°C, with linear resistance change as temperature varies (e.g., 138.5Ω at 100°C).
  • Accuracy Class: Class A (±0.15°C at 0°C) or Class B (±0.3°C at 0°C).
  • Industrial Certifications: ATEX, IECEx, SIL 2/3 (for hazardous areas).

2. Key Advantages of Rosemount PT100 Sensors

2.1 High Accuracy & Long-Term Stability

• Superior linearity compared to thermocouples, ideal for ±0.1°C precision in pharmaceuticals and food processing.
• Advanced platinum wire coating minimizes oxidation, ensuring long-term reliability.

2.2 Rugged Industrial Design

• Protection Rating: IP67/IP68 (dustproof/waterproof).
• Vibration Resistance: Tested up to 10G (suitable for oil & gas applications).
• Wetted Materials: 316L stainless steel, Hastelloy (corrosion-resistant).

2.3 Flexible Signal Output Options

• Direct resistance output (2/3/4-wire configurations to reduce lead errors).
• Integrated transmitters (e.g., Rosemount 214C with 4-20mA + HART/FF protocols).

3. Popular Models & Applications

4. How to Select the Right Rosemount PT100?

• 4.1 Define Requirements:
  • Temperature range, accuracy class (A/B), mounting type (threaded/flange/sanitary clamp).
  • Need a transmitter? Output signal type (4-20mA/RS485/HART)?
• 4.2 Environmental Factors:
  • Corrosive media → Choose Hastelloy material.
  • Explosive atmospheres → Select ATEX-certified models.

5. Why Choose Rosemount PT100?

• Global Support: Emerson provides local calibration & technical assistance.
• Traceability: Each sensor has a unique serial number with ISO 17025 calibration certificates.
• Seamless Integration: Compatible with Rosemount DCS systems (e.g., DeltaV).

6. Frequently Asked Questions (FAQ)

Q1: PT100 vs. Thermocouple – Which to Choose?

• PT100: Best for mid/low temps + high accuracy.
• Thermocouple: Better for extreme temps (>600°C) but less precise.

Q2: What is the Calibration Interval for Rosemount PT100?

• Recommended 1-2 years (per IEC 60751), shorter in harsh environments.

Need help selecting the right Rosemount PT100? Contact our engineers for a free consultation and product datasheets!

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