Winsen MRT313 Thermopile Temperature Sensor User Manual
- June 16, 2024
- Winsen
Table of Contents
MRT313 Thermopile Temperature Sensor
User Manual
MRT313 Thermopile Temperature Sensor
Thermopile Temperature Sensor
(Model: MRT313)
Version: 3.0
Valid from: 2022-11
Statement
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LTD. Without the written permission, any part of this manual shall not be
copied, translated, stored in database or retrieval system, also can’t spread
through electronic, copying, record ways.
Thanks for purchasing our product. In order to let customers use it better and
reduce the faults caused by misuse, please read the manual carefully and
operate it correctly in accordance with the instructions. If users disobey the
terms or remove, disassemble, change the components inside of the sensor, we
shall not be responsible for the loss.
The specific such as color, appearance, sizes &etc, please in kind prevail.
We are devoting ourselves to products development and technical innovation, so
we reserve the right to improve the products without notice. Please confirm it
is the valid version before using this manual. At the same time, users’
comments on optimized using way are welcome.
Please keep the manual properly, in order to get help if you have questions
during the usage in the future.
MRT313 Thermopile Temperature Sensor
Product Description：
MRT-313 is an infrared thermopile temperature sensor, direct contact is not required when measuring object temperature. The core component thermopile chip is formed by connecting hundreds of thermocouples in series based on MEMS technology. The thermopile absorbs the infrared energy emitted from the measured object, and uses the Setback theory, the sensor outputs the corresponding voltage to detect the temperature of the target.
Features
- TO-39 metal package
- Specific perspective
- Quick response
- Good stability
- High precision NTC
Applications
- Household appliances (Microwave oven, hair dryers, range hood etc), temperature measuring and controlling
- Non-contact temperature measuring
- Continuous temperature control of production process
- Human presence detection
- Power industry temperature monitoring;
Technical parameters
| Parameter | Value | Unit | Remarks |
|---|---|---|---|
| Sensitive area | 1×1 | mm | / |
| Field of view | 60 | Degree | Above 50% |
| Thermopile resistor | 75±15 | KO | 25°C |
| Noise voltage | 38 | nV/Hz112 | 25°C |
| Noise equivalent power | 0.23 | nW/Hz1/2 | 500K, 1Hz, 25°C |
| Response rate | 110±30 | V/W | 500K, 1Hz, 25°C |
| Temperature coefficient of resistance | 0.06 | %/°C | 25°C 75°C |
| Time constant | ≤ 20 | ms | |
| Detection rate | 1.2 x108 | cmHz1/2/W | 500K, 1Hz, 25°C |
| NTC resistance | 100 ± 1% | KO | 25°C |
| B-value constant | 3950 ± 1% | / | 25°C/50°C |
| Working temperature | -30 ∼ 100 | °C | / |
| Storage temperature | 40 — 110 | °C |
Sensor diagram(unit:mm)
Electrode connection:
| Pin | 1 | 2 | 3 | 4 |
|---|---|---|---|---|
| Definite | Thermopile positive | NTC | Thermopile negative | GND |
Sensor Character:
- Typical thermopile performance (V-T) curve:
- Sensor view angle： The light hole of the sensor is facing the heat source, rotate the window of the sensor around the same axis. The sensor signal response is the range covered when the maximum signal response of the sensor at 50%;
- Filter Performance Curve
Parameter| Value| Unit| Remarks
---|---|---|---
Wavelength range| 5.5~14| um|
Transmittance 1| ≥75| %| Average, 5.5~14um
Transmittance 2| <1| %| <5μm
4. Thermistor (NTC) R-T Table
T(°C)| R(CI1)| T(°C)| It(ICII)| T(°C)| R(ICL1)|
T(°C)| R(K12)
---|---|---|---|---|---|---|---
-30| 1788.| 3| 281.| 36| 63.| 69| 18.
-29| 1680.| 4| 267.| 37| 60.| 70| 17.
-28| 1579.| 5| 254.| 38| 57.6610| 71| 17.
-27| 1484.| 6| 242.| 39| 55.| 72| 16.1930
-26| 1396.| 7| 230.3940| 40| 53.| 73| 16.
-25| 1314.| 8| 219.| 41| 51.| 74| 15.
-24| 1237.| 9| 209.| 42| 49.| 75| 15.
-23| 1165.| 10| 199.| 43| 47.| 76| 14.
-22| 1098.| 11| 190.| 44| 45.3130| 77| 14.
-21| 1035.| 12| 181.| 45| 43.5o21| 78| 13.
-20| 976.| 13| 173.| 46| 42.| 79| 13.
-19| 921.| 14| 164.7540| 47| 40.| 80| 12.
-18| 869.| 15| 157.2290| 48| 39.| 81| 12.
-17| 820.| 16| 150.| 49| 37.| 82| 12.
-16| 774.8710| 17| 143.| 50| 36.| 83| 11.2270
-15| 732.| 18| 137.| 51| 35.| 84| 11.
-14| 692.| 19| 131.| 52| 33.| 85| 11.
-13| 654.| 20| 125.| 53| 32.| 86| 10.
-12| 6191540| 21| 119.| 54| 31.| 87| 10.
-II| 586.| 22| 114.| 55| 30.| 88| 10.
-10| 555.| 23| 109.| 56| 29.| 89| 9.
_9| 525.| 24| 105.| 57| 27.5860| 911| 9.
-8| 498.| 25| 100.0000| 58| 27.| 91| 9.
-7| 472.| 26| 96.| 59| 26.| 92| 8.
-6| 447.| 27| 92.| 60| 25.| 93| 8.
-5| 424.| 28| 88.| 61| 24.| 94| 8.
-4| 402.| 29| 84.| 62| 23.| 95| 8.
-3| 382.| 30| 81.| 63| 22.| 96| 7.
-2| 362.| 31| 77.| 64| 21.| 97| 7.2360
-I| 344.| 32| 74.| 65| 21.| 98| 7.
0| 327.| 33| 71.| 66| 20.| 99| 7.
I| 310.7640| 34| 68.| 67| 19.| 100| 7.
2| 295.| 35| 65.| 68| 18.5920| 101| 6.
4. Recommended circuit: 
Basic principle and use method
(1) Combined with the reference circuit, read the resistance value Ra between
pin 2 and 4;
(2) According to the resistance value of Ra, the B value constant of NTC and
the R-T table in the specification, to get the corresponding ambient
temperature Tamb (this temperature is not the ambient temperature of the
outside atmosphere, but the internal ambient temperature of the sensor);
(3) Reading the voltage Vibe between pin 1 and 3;
(4) The corrected signal voltage Vobj,cal is obtained by introducing the
correction coefficient of the sensor;
(5) Find the voltage value equal to or close to the Vobj,cal value in the Tamb
column of the V-T table, and The corresponding Tobj line is the temperature of
the measured object Tobj.
Note:
- Due to the existence of individual differences and the influence of blackbody temperature, distance, environment and other factors, each sensor must be calibrated before use;
- The test output voltage of the sensor is easily affected by the NTC resistance value. It is necessary to increase the thermal resistance and thermal capacity to increase the temperature stability. Generally, metal (copper, aluminum) kits are used;
- The view angle of the sensor is large, so it usually need to adjust according to the size of the test target object and the test distance in actual use;
- In order to reduce the thermal interference between the sensor pins, the sensor pins should be thermally isolated when making a PCB;
- Frequent, excessive vibration, strong impact or collision will cause resonance inside the sensor to break.
Zhengzhou Wines Electronics Technology Co., Ltd
Add: No.299, Jinhua Road, National Hi-Tech Zone,
Zhengzhou 450001 China
Tel: +86-371-67169097/67169670
Fax: +86-371-60932988
E-mail: sales@winsensor.com
Website: www.winsen-sensor.com
Tel: 86-371-67169097/67169670 Fax: 86-371-60932988
Email: sales@winsensor.com
References
- Winsen Gas Sensor_CO2 Sensor_Air Quality Sensor_Dust Sensor_CO Sensor-Winsen Electronics
- Winsen Gas Sensor_CO2 Sensor_Air Quality Sensor_Dust Sensor_CO Sensor-Winsen Electronics
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