1.  Product features

²  Preferential communication rights for alarm function and designated address, message resent function, together with automatic frequency adjustment function makes high reliability in data acquisition.

²  Maximum it can support 128 units of wireless instruments, 12 units of wireless router, and 128 units of wireless bridge.

²  Network available:  star net, free net, bridge net, MESH net

²  With 8 current signal output, converting the measuring data to electric current output, easy for other device’s acquisition.

²  RS485 connection,     Modbus-RTU   universal protocol

²  Ethernet interface，   with Modbus-TCP/IP  standard protocol

²  Anti-lightning , anti-interference , and anti-explosion design concept complies with the different needs of industrial manufacturing.

2.  Application fields

²  For single well oil / nature gas recovery,  For the procedure control in oil / chemical production.

²  For wireless data acquisition in automated factory production

²  For the acquisition and analysis system of laboratory testing

²  In heat supply and water supply of city planning 

²  Intelligent public transportation system,  remote supervision system.

²  Environment supervision of power plant and heat plant.

3.  Technical parameters

3.1         Wireless gate way parameters：

Working frequency:  ISM 2.4GHz

Transmitting power:            common style  6.3mW (+8dBm)  burst mode

                                  common style  3.1mW (+5dBm)  normal mode

                                 enhanced style  63mW (+18 dBm)  normal mode

              received power for all styles and modes   -100 dBm

communication distance ： 

common style    visible   300M

enhanced style    visible   1200M

Notice:  A、standard 2dB antenna for common style,   standard 7dB antenna for enhanced style .

3.2           Communication style：

Communication bus:    RS485 bus  （Modbus-RTU protocol）

Ethernet  TCP/IP   :    Modbus-TCP  protocol （to be customized）

3.3          Signal output：

Current output ：4~20mA、 0~20mA（can be customized） load@250Ω

Voltage output：0~5V、（can be customized）

Notice：

Signal output error is less than 0.1% when environment temperature 25℃

3.4          Power supply：

Power supply：  （10~30）V DC

System current： 40mA（without current output）、200mA（8 current output）

3.5          Working environment :

Temperature range : -30~+70℃

Relative humidity：<85%     (20±5℃,room temperature condition required)

Atmospheric pressure： （86~108）kPa

Installation style     ：  locked on lead rail,  bottom bracket,  magnetic chuck 

3.6         Wireless network scale

Acquisition speed： 12 units of wireless device  @ 1 second

                       25 units of wireless device  @2 seconds

                       50 units of wireless device  @4 seconds

                      100 units of wireless device  @8 seconds

Refresh rate ：1~1800 seconds （ can be set at the wireless device）

Network scale / delay： 

100 units of wireless device   /  less than 10 seconds

                50 units of wireless device   /  less than 5 seconds

Notice：  communication speed affects by working environment, communication distance. It is a good way to cut down the communication distance in order to ensure a high speed and stability of communication.