MRT313 MRT511 Thermopile Sensor Forehead Temperature Gun Temperature Probe Non-contact Thermometer Component

MRT313 MRT511 Thermopile Sensor Forehead Temperature Gun Temperature Probe Non-contact Thermometer Component

1. Core Working Principle:

The MRT313 operates based on the thermopile effect and infrared radiation detection principle:

• It integrates a thermopile sensor chip and a high-transmittance IR filter (optimized for 8–14 μm wavelength, matching the peak infrared radiation wavelength of the human body).
• When the sensor is aimed at the human forehead, the thermopile chip absorbs the infrared radiation emitted by the skin surface. The absorbed energy generates a temperature difference between the hot and cold junctions of the thermopile, which induces a proportional Seebeck voltage.
• The output voltage signal is processed by a signal conditioning circuit (e.g., amplification, calibration) to convert it into a precise body temperature reading.

2. Key Features:

1. Human Body Temperature Optimization: The 8–14 μm IR filter is tailored for human body infrared radiation, ensuring high selectivity and eliminating interference from ambient light and other heat sources.
2. High Measurement Precision: Under standard measurement conditions (distance: 3–5 cm, ambient temperature: 25°C), the temperature measurement error is ≤ ±0.2°C, meeting the accuracy requirements of medical and consumer-grade thermometers.
3. Fast Response Time: T₉₀ response time ≤ 300 ms, enabling rapid temperature reading without long waiting.
4. Low Power Consumption: Ultra-low power design with typical operating current ≤ 10 μA, suitable for battery-powered portable devices (e.g., handheld forehead thermometers).
5. Compact & Easy Integration: Small SMD package, lightweight structure, and pin-compatible design for direct soldering on PCB boards, ideal for miniaturized temperature measurement equipment.
6. Built-in Temperature Compensation: Equipped with an integrated NTC thermistor for real-time ambient temperature monitoring and compensation, ensuring measurement accuracy in different environmental temperatures (10°C–40°C).
7. Stable Long-Term Performance: Low drift rate ≤ 0.1°C/year, no need for frequent recalibration during service life.

3.Typical Applications:

• Medical-grade non-contact forehead thermometers
• Consumer-grade infrared body thermometers
• Smart wearable temperature monitoring devices (e.g., smart bands with temperature detection)
• Public health temperature screening equipment (simplified versions)

Yijiajie Electronics is a full range of silicon pressure sensors from the United States, FREESCALE/, GE, MEAS, SMI, and a full range of sensing and control products from the United States pressure, temperature and humidity, gas flow, current, Hall effect, etc., Japan HAMAMATSU flame, UV sensors, photodiodes, Japan FIGARO, UK CITY, ALPHASENSE full range of semiconductors, catalytic, electrochemical gas sensors, French HUMIREL/MEAS humidity sensors and other international well-known companies authorized agents or distributors, to provide customers with product information, products Solutions, product selection, supply guarantee and logistics services, etc.