Overview
MRT-311 thermopile sensor is based on MEMS technology, consists of hundreds of thermocouples connected in series. Using Seebeck principle, when there is a temperature difference between the target and the environment, the sensor gives the corresponding voltage output, therefore detecting the existence of the target or the temperature of the target.
Key Features
- TO-46 metal package
- High sensitivity
- Quick response, Good stability
- High filter transmittance
- High precision NTC
Applications
- Non-contact temperature measuring
- Infrared thermometer, such as ear temperature and forehead temperature measurement
- Continuous temperature control of production process
- Household appliances (Microwave oven, hair dryers, air conditioners etc), intelligent temperature induction and control system
- Human presence detection
Technical Specifications
| Parameter | Value | Unit | Remarks |
| Chip size | 1.1×1.1 | mm | / |
| Field of view | 95 | Degree | Above 50% |
| Thermopile resistor | 90±30 | KΩ | 25°C |
| Noise voltage | 38 | nV/Hz1/2 | 25°C |
| Noise equivalent power | 0.23 | nW/Hz1/2 | 500K, 1Hz, 25°C |
| Response rate | 160±40 | V/W | 500K, 1Hz, 25°C |
| Temperature coefficient of resistance | 0.06 | %/°C | 25°C~75°C |
| Time constant | ≤13 | ms | |
| Detection rate | 1.5 ×108 | cmHz1/2/W | 500K, 1Hz, 25°C |
| NTC resistance | 100 ±0.5% | KΩ | 25°C |
| NTC(β) | 3950 ± 1% | / | 25°C/50°C |
| Working temperature | -30 ~ 125°C |
