DTP Series Specification

Non-contact Infrared Temperature Sensor

Page

2 of 3

1.0.1.

Calculate Field of View

The FOV determines the size of the infrared measurement area

according to the distance.

unit: mm

Angle

FOV

7.16°

2 ⅹ tan( 7.16

° 2) ⅹ distance(mm) + 6.75 (mm)

3.814°

2 ⅹ tan( 3.814

° 2) ⅹ distance(mm) + 8 (mm)

Protocol downloads

DTP-UART: https://www.diwellshop.com/web/en/DTP/DTP-UART_protocol_EN.pdf

DTP-485: https://www.diwellshop.com/web/en/DTP/DTP-485_protocol_EN.pdf

Object Temperature To, Ambient Temperature: Ta

To is the object temperature derived from thermopile and ambient sensor outputs.

Ta stands for ambient temperature.

0x016D(hex) = 365(dec) → means 36.5℃

0xFFF1(hex) → 0x000F(two’s complement)=15 → means -1.5℃

- Output Data Limit

Ta: 0xFE83(-38.1℃) … 0x4E2(120.0℃)

To: 0xFE70(-40.0℃) … 0xED8(380.0℃)

Emissivity Correction

The DTP is calibrated for an object emissivity of 0.97. It can be easily customized by

the customer for any other emissivity in the range 0.1…1.0. Refer to the protocol pdf

to adjust emissivity.

Products handling precaution

※ When it comes to dust removal by air, the best method is to use a blower, and

to avoid using compressed air.

※ Do not press the lens with your hands or any other object.

※ Do not scratch the lens surface with sharp objects.

※ Voluntary disassembly and modification of the product is prohibited.

※ Avoid direct sunlight, chemical substance, heat or fire.

※ Water resistance is not guaranteed.

Tutorial 1(Arduino UNO)

- Connection Diagram

- DTP-UART: https://www.diwellshop.com/web/en/DTP/DTP-UART_Arduino.zip

Hardware: Arduino Uno, DTP-UART Sensor, 100Ω, 1.8㏀, 3.3㏀

Software : Arduino IDE

- DTP-485 : https://www.diwellshop.com/web/en/DTP/DTP-485_Arduino.zip

Hardware: Arduino Uno, DTP-485 Sensor, RS-485IC,

Software : Arduino IDE

- Expected Results.