Product Description
A Bullet Type NTC Temperature Sensor is a versatile and robust probe designed for direct immersion into liquids and gases to measure temperature accurately. Its name derives from its characteristic elongated, cylindrical shape (often with a tapered tip), resembling a bullet. This form factor is engineered for easy insertion into thermowells, pipes, tanks, or other openings. It typically houses a high-stability NTC (Negative Temperature Coefficient) thermistor inside a sealed metal sheath (such as stainless steel), providing excellent protection and thermal conductivity for demanding industrial and commercial applications.
Specification
| Parameter | Value |
| Resistance value at 25 °C | 10KΩ, 50KΩ, 100KΩ etc |
| olerance on R25 value | ± 1% |
| B value | 3435K,3984K, 3950K, 3990K, etc |
| Tolerance on B value | ± 1% |
| Operating temperature range | 20℃ to + 150℃ |
| Response time (25 °C to water 85 °C) | 2 s |
| Dissipation factor Mounted in still air | 2.8 mW/K |
| Maximum power dissipation at 55 °C | 100 mW |
|
Min. dielectric withstanding voltage between terminals and capsule (10 s) |
500 VAC |
| Insulation resistance at 500 VDC | > 100M |
| Thermal gradient | < 0.02 K/K |
| Standard NTC | R25℃=100KΩ±1% |
| B25/50=3990K±1% | |
| Operating temperature | -20~150℃ |
| Application | water heater,coffee maker, electric kettle, etc. |
| Standard NTC | R25℃=100KΩ±1% |
| B25/50=3950K±1% | |
| Operating temperature | -30~150℃ |
| Application | coffee maker,electric ketle, etc. |
| Standard NTC | R25℃=50KΩ±1% |
| B25/50=3950K±1% | |
| Operating temperature | -30~150℃ |
| Application | oven, toaster, water dispenser, etc. |
| Standard NTC | R25℃=50KΩ±1% |
| B25/50=3950K±1% | |
| Operating temperature | -20~150℃ |
| Application | water heater,coffee maker, electric kettle, etc. |
| Standard NTC | R25℃=50KΩ±1% |
| B25/50=3950K±1% | |
| Operating temperature | -20~150℃ |
| Application | water heater,coffee maker, electric kettle, etc. |
| Standard NTC | R25℃=10KΩ±1% |
| B25/50=3380K±1% | |
| Operating temperature | -20~150℃ |
| Application | water heater,coffee maker, electric kettle, toilets, etc. |
| Standard NTC | R25℃=100KΩ±1% |
| B25/50=3950K±1% | |
| Operating temperature | -30~150℃ |
| Application |
electric kettle,water heater, coffee maker,food processor, etc. |
Features
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Excellent for Immersion: The sealed, waterproof metal sheath makes it ideal for direct temperature measurement in liquids like water, oil, and chemicals.
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Robust and Durable: The stainless steel construction offers high resistance to corrosion, pressure, and mechanical damage, ensuring a long service life.
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Good Response Time: The metal sheath provides efficient heat transfer to the internal thermistor, resulting in a reasonably fast and accurate response to temperature changes.
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Easy Installation: Standard threaded fittings (e.g., M4, M6, M8, 1/4" NPT) allow for simple and secure mounting into threaded holes or thermowells.
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Wide Temperature Range: Suitable for a broad range of temperatures, typically from -50°C to over 250°C, depending on the materials used.
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High Accuracy & Stability: Offers reliable and consistent temperature readings for process control and monitoring.
Application
Bullet Type sensors are widely used wherever robust, immersion-based temperature sensing is required. Common applications include:
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Appliances: Measuring water temperature in coffee machines, water dispensers, and dishwashers.
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Automotive: Monitoring coolant, oil, and fuel temperatures.
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Industrial Processes: Temperature sensing in tanks, pipelines, and machinery for HVAC, chemical processing, and food & beverage production.
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Energy Systems: Monitoring temperatures in solar water heaters and hydraulic systems.
