I. Features
WDB506 temperature and humidity control, set the temperature and humidity acquisition, display, monitoring, alarm and control in one. Built-in import of high temperature and humidity sensor chip, high detection accuracy, stable performance.With RS485 interface, can achieve more while monitoring, networking and remote, on-site digital display.
1. Control Function
This product is built-in 4-way normally open relay,through intermediate relay control various types of heating cooling, humidification dehumidification equipment for Long-term.
2. Communicatio
This product uses the RS485 interface mode, using a wide range of industrial applications Modbus data communication protocol for data communication,can be connected directly with various types of control equipment, instrumentation and computer display .
3.remote transmission Function
With RS485 interface, the maximum transmission distance up to 1200 meters. Temperature and humidity can be achieve distant monitored and controlled.
4. Networking features
Multiple WDB506 sensor is connected via a serial bus, external power supply is required for each sensor separately, bus endpoint via a digital signal converter connect with a computer serial port.Can be achieved to receive the device-centric multi-point monitoring,in order to achieve a wide range of centralized control and management.
5 site display
WDB506 temperature and humidity sensor has large display, temperature and humidity changes can be directly observed the scene through the display panel.
2.Parameter
Measurement Range:Humidity: 0% RH ~ -100% RH Temperature: 0 degree Celsius ~ 60 degree Celsius
Accuracy: 20% RH-80% RH @ 25 degree Celsius
Humidity: ± 3.0% RH Temperature: ± 0.4 degree Celsius
Load power: 0.25A 220VAC / 2A 30VDC
interface mode: RS485
Communication distance: less than 1200m
Communication protocols: standard Modbus
Response time: 15s
Programmable address:1-255
Baud Rate:1200-38400
Supply Voltage:12V DC-24V DC
Operating Temperature:-10 degree Celsius ~ 80 degree Celsius
Power Consumption:Less than 4W
3.the power supply and communication
After the host sensor is installed, you can begin to supply power and communication:
a.Recommend the use of a standard power supply 12V or 24V power supply, if need to use 220V AC AC power supply, please contact us!
b.When the power is turned on, the screen that displays the current temperature and humidity conditions, observations indicate whether the value has changed, which means that the sensor works.
Check the sensor is working properly,then turn off the power,By definition of terminals,connecting Sub-terminal of communication terminal to the "RS485-232 converter" of "D +", "D-" side,And connect "RS485-232 converter," the nine-pin serial port to your computer.To achieve hardware communication with the computer (Figure 3).When the communication is normal, the upper right corner of the display will flash the word "RTU" (Figure 4).
4.communication
Sensors as standard RS485 communication interface, communication protocol Modbus communication protocol widely used in industrial fields, multiple sensor equipment 485 serial connection, each device separate external power supply, bus endpoint via a digital signal converter with a computer serial port , and the specific networking connection terminals Referring to Figure 6.
