Features
1. It is widely used in agricultural greenhouses, flower cultivation and other occasions requiring light intensity, temperature and humidity monitoring.
2. Wall-mounted, easy installation, and the small volume will help saving your space.
3. Compact and portable design, high density material shell, closed moisture-proof effect is significant.
4. Exquisite welding circuit board, automatic manipulator welding process, to ensure the circuit board signal stability and accuracy, long-term reliable.
5. High quality optical components, close to the visual sensitivity of the spectral characteristics, a wide range of luminance can be determined by 1 lx with high precision. 6With 485 communication, standard modbus-rtu communication protocol, communication address and baud rate can be set, the maximum communication distance is 2000m/6561.7ft. 7Powered by 0-30V DC wide voltage, low power consumption, energy saving. 8Waterproof design, it can be used indoors and outdoors to meet more needs of customers.
Specification
Condition: 100% Brand New
Item Type: Light Intensity Temperature Humidity Transmitter
Material: Polyester Plastics
Color: As shown in the picture
Size: Approx.13x11.7x5.5cm / 5.1x4.6x2.2in
Weight: Approx.208g/7.3oz
DC Power Supply (default): 10-30V DC
Maximum Power Consumption: 0.4W
Humidity Accuracy: 3%RH (5%RH~95%RH, 25C)
Temperature Accuracy: 0.5C (25C)
Light intensity Accuracy: 7% (25C)
Light Intensity Range: 0-200,000 Lx
Temperature and Humidity Range: -40C ~ +60C, 0% RH ~ 80% RH
Long-term Stability Temperature: 0.1C/y
Long-term Stability Humidity: 1%/y
Long-term Stability Light Intensity: 5%/y
Response Time Temperature: 18s (1m/s wind speed)
Response Time Humidity: 6s (1m/s wind speed)
Response Time Light Intensity: 0.1s
Basic Communication Parameters:
Coding 8 bits binary system
Data bits 8 bits
Parity check bit None
Stop bit 1 bit
Error check CRC (redundant cyclic code)
Baud rate can be set 2400bit/s,4800bit/s and 9600 bit/s can be set, and the factory default is 4800bit/s
Data Frame Format Definition:
Adopt Modbus-RTU communication protocol, the format is as follows:
Initial structure4 bytes of time
Address code = 1 byte
Function code = 1 byte
Data area = N bytes
Error check = 16-bit CRC code
End structure4 bytes of time
Address Code: is the address of the transmitter, which is unique in the communication network (factory default 0x01).
Function Code: The instruction function of the command sent by the host. This transmitter only uses function code 0x03 (read register data).
Data Area: The data area is the specific communication data. Note that the 16bits data high byte is in front!
CRC Code: Two-byte check code.
The device cannot connect to the PLC or computer:
Possible Reason:
1) The computer has multiple COM ports, and the selected port is incorrect.
2) The device address is incorrect, or there is a device with duplicate addresses (all factory defaults are 1).
3) Baud rate, check mode, data bit, stop bit error.
4) The host polling interval and the waiting response time are too short and need to be set to more than 200ms.
5) The 485 bus is disconnected, or the A and B lines are reversed.
6) If the number of devices is too large or the wiring is too long, the power should be supplied nearby, add 485 intensifier, and increase the resistance of 120 terminal.
7) The USB to 485 driver is not installed or damaged.
8) Equipment damage.
Package List
1 x Light Intensity Sensor
1 x Pack Fitting(2pcs screw, 2pcs nut)
