MRT511 Thermopile Temperature Sensor
MRT-511 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.
Features
l TO-46 metal package
l High sensitivity
l Quick response, Good stability
l High filter transmittance
l High precision NTC
Applications
l Non-contact temperature measuring
l Infrared thermometer, such as ear temperature and forehead temperature measurement
l Continuous temperature control of production process
l Household appliances (Microwave oven, hair dryers, air conditioners etc), intelligent temperature induction and control system
l Human presence detection
Table 2 MRT511 thermopile parameters
Parameter | Value | Unit | Remarks |
Sensitive area | 1.6×1.6 | mm | |
Field of view | 105 | Degree | Above 50% |
Thermopile resistor | 120±30 | KΩ | 25℃ |
Noise voltage | 45 | nV/Hz1/2 | 25℃ |
Noise equivalent power | 0.27 | nW/Hz1/2 | 500K, 1Hz, 25℃ |
Response rate | 124 | V/W | 500K, 1Hz, 25℃ |
Time constant | 10 | ms | |
Detection rate | 1.0 ×108 | cmHz1/2/W | 500K, 1Hz, 25℃ |
NTC resistance | 100 ± 1％ | KΩ | 25℃ |
NTC(β) | 3950 ± 1％ | / | 25℃/50℃ |
Working temperature | -30 ~ 125℃ |
