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Help CenterModbus RS485 DT200 Waterproof Air Temperature Sensor Factory Air Conditioner Temperature Sensor Humidity Meter Moisture Meter
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DT300 outdoor air temperature sensor and humidity sensor 4-20ma output with wifi gprs transmission remote monitor humidity data .
Overview: grain moisture tester ( temperature transmitter )
The DT300 is one type of grain moisture tester which measure the air temperature and humidity..
LED display and wireless version are optional, such as zigbee, wifi, and GPRS.
It is applicable for industry, home, agriculture remotely measurement and other application, such as IOT (Internet of Things).
Specification: grain moisture tester ( temperature transmitter )
Measurement Range |
Temperature: -55~+125℃, Humidity: 0%~100% |
Accuracy |
±0.5℃, ±3%RH |
Power Supply |
10-32V DC |
Output Signal |
Field Bus: RS485, CAN Bus |
Wireless: Zigbee, Wifi, GPRS | |
Protocol |
Modbus RTU/ Dingtek |
Working Temperature |
-40 ~ 85℃ |
Protection Rank |
IP65 |
LED Display |
Optional |
Recharge Battery |
Optional |
Wireless |
Optional |
System Diagram: grain moisture tester ( temperature transmitter )
Notes:
1. For field bus, CAN Bus, RS485 is optional.
2. For wireless, Wifi, zigbee, GPRS/3G is optional.
3. LED display is optional.
Interface Definition ( temperature transmitter )
Pin 1: Red Line: V+,
Pin 2: Blue Line: RS485 A+ (CAN +)
Pin 3: Black Line: GND
Pin 4: Yellow Line: RS485 B- (CAN-)
Protocol: grain moisture tester
1. Communication
Baud rate |
9600 |
Data bit |
8 |
Stop bit |
1 |
Check sum |
none |
2. Request (from pc to sensor)
Section |
Header |
Command |
ID |
Content |
Checksum |
Tail |
Bytes |
1 |
2 |
2 |
0/6 |
2 |
2 |
Content |
$ (0x24) |
|
|
|
|
|
Remark |
|
in caption |
in ascii, 01~FF, in caption |
for reading, it is 0. For writing, it is 6 bytes. |
calculate sum from header to content, get low 8 bit, then change to 2 ascii |
0x0D 0A |
3. Reply (from sensor to pc)
Section |
Header |
Command |
ID |
Content |
Checksum |
Tail |
Bytes |
1 |
2 |
2 |
6 |
2 |
2 |
Content |
* (0x2A) |
|
|
|
|
|
Remark |
|
in caption, see above command list |
in ascii, 01~FF, in caption |
replied value for reading in mm or L. OKOKOK for successful setting. NONONO for failed setting |
calculate sum from header to content, get low 8 bit, then change to 2 ascii |
0x0D 0A |
Command list
Command list | |
RT |
Read Temperature |
RH |
Read Humidity |
SI |
Set ID |
Model Naming Rules
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