Looking to understand more about Pt100 temperature sensors? Whether you’re a factory engineer, technician, or project buyer in Malaysia, this guide answers the most common questions about Pt100 sensors — from how they work to how to choose the right one.
What is a Pt100 temperature sensor?
A Pt100 is a type of RTD (Resistance Temperature Detector) that measures temperature by correlating resistance with temperature. The “Pt” stands for platinum, and 100 means it has a resistance of 100 ohms at 0°C.
How does a Pt100 sensor work?
Pt100 sensors work by detecting changes in electrical resistance as the temperature changes. Platinum is used because of its stable and predictable resistance-temperature relationship, making Pt100 sensors highly accurate and repeatable.
What are the main types of Pt100 sensors?
Pt100 sensors come in different configurations:
- 2-wire: Simplest, but less accurate due to wire resistance.
- 3-wire: Most commonly used in industrial applications for better accuracy.
- 4-wire: Highest accuracy, used in labs or critical processes.
They can also be:
- Surface-mounted
- Probe-style
- Threaded or flange-mounted
What is the temperature range of a Pt100 sensor?
A standard Pt100 sensor typically measures temperatures from -200°C to +600°C, depending on its construction and insulation.
Where are Pt100 sensors used in Malaysia?
Pt100 sensors are widely used in:
- Manufacturing (plastic, rubber, packaging)
- HVAC systems
- Food & beverage processing
- Pharmaceutical & labs
- Electrical panel temperature monitoring
What's the difference between Pt100 and thermocouples?
| Feature | Pt100 Sensor | Thermocouple |
|---|---|---|
| Principle | Resistance-based | Voltage-based |
| Accuracy | Higher | Moderate |
| Cost | Slightly higher | More economical |
| Lifespan | Longer in stable env | Shorter in harsh settings |
| Common Application | Precise temperature | Wide temp range |
How do I choose the right Pt100 for my application?
Here’s what to consider:
- Temperature range
- Process environment (moisture, vibration, chemical exposure)
- Mounting style
- Required accuracy (Class A or B)
- Wiring configuration (2, 3, or 4 wire)
Need help choosing? Contact HQ Heating for personalized advice.
What is Class A vs Class B in Pt100 sensors?
These classes refer to accuracy levels:
- Class A: ±0.15°C at 0°C – higher precision
- Class B: ±0.30°C at 0°C – standard precision
Choose Class A for sensitive processes like food, pharma, or lab settings.
Do Pt100 sensors need calibration?
Yes. For best accuracy, calibration is recommended periodically, especially in regulated industries. HQ Heating can assist with recalibration or replacement.
Where to buy Pt100 Temperature Sensors in Malaysia?
You can get high-quality Pt100 sensors at HQ Heating — we offer:
- Custom sensor configurations
- Local support and fast lead time
- Industry-tested durability
✅ Need Expert Help?
If you still have questions or need a quote for bulk or customized Pt100 sensors in Malaysia, feel free to get in touch with us. We’re here to help your temperature control process run smoothly.