LS129 Ultraviolet Digital Probe

LS129 Ultraviolet Digital Probe


I. LS129 Ultraviolet Digital Probe Introduction

      LS129 UV intensity online monitor is a smart digital probe of small size. It is suitable for various measurement occasions that need to monitor UV power and energy in real time. With standard RS485 communication interface and MODBUS communication protocol. The detector and controller adopt a split design, which can be directly connected to a computer, PLC and human-machine interface for communication to achieve real-time data collection and monitoring.

LS129 UV digital probe

II. LS129 Ultraviolet Digital Probe Parameters


UV digital probe

LS129 digital probe response curve

III. Ultraviolet Digital Probe Characteristics 

1. The LS129 UV digital probe has a very small size, and the detector and controller adopt a split design, which is very convenient for installation where measurement is needed. It is also possible to combine the detector and controller with screws for measurement.

 UV digital probe
LS129 UV digital probe appearance 

2. It adopts standard RS485 communication interface and MODBUS communication protocol. This UV intensity meter is equipped with high temperature wire capable of withstanding temperature of 200 ℃, which can realize online monitoring in real time for a long time.

 MODBUS communication protocol
MODBUS communication protocol

3.The probe is powered by a 5-24V ultra-wide DC power supply range, which is very convenient for use in different industries on spot.

4. Free computer debugging software for communication protocol debugging.

IV. LS129 Ultraviolet Digital Probe Communication Parameters

1. Station No

     The LS129 smart digital probe supports the standard MODBUS protocol. The default communication address is "1". You can modify the probe communication address through the "Human Machine Debugging Tool" or the communication protocol. The address setting range is 1-247.

2. Baud rate

     The default baud rate of the UV digital probe is 9600bps. The baud rate can be modified through the "Human Machine Debugging Tool" or communication protocol.

3. Protocol

     Supports the standard MODBUS protocol. You can read the probe measurement data and set the communication address and baud rate through the communication protocol. For detailed communication commands, please refer to "LS129 Digital Probe Communication Protocol".

4. Probe wiring

Wire color Function

Black (with heat-shrinkable


Shielded wire
Red Positive power(DC 5-24V)
Black Negative power 
Green RS485-
White RS485+

V. Three optional ultraviolet digital probe debugging tools

1. Human-machine interface for debugging (optional): It can be used to view the probe data and set the probe communication address and baud rate during debugging.

 LS129 UV digital probe human-machine interface connection
LS129 UV digital probe human-machine interface connection 

2. RS232 / RS485 converter (optional): Used for communication protocol debugging.

 LS129 and RS232 converter connection
LS129 and RS232 converter connection

3.USB adapter (optional): used to read data from RS485 to USB connection computer

LS129 and USB adapter connection
 LS129 and USB adapter connection

Note: The debugging human-machine interface, RS232 converter and USB converter are not standard. These accessories can be purchased as required.

VI. LS129 Ultraviolet Digital Probe Operation Video

VII. LS129 UV Digital Probe After-Sales Service                                                        

1.The meter has one-year warranty. If the instrument works abnormally, please send the whole instrument to our company for maintenance
2.Provide users with spare parts and lifelong maintenance services
3.Provide the users with the meter inspection service 
4.Free technical support for long term

Manufacturer: Shenzhen Linshang Technology Co.,Ltd. Website:      
Service hotline: 0755-86263411 Email:

For more details about Linshang UV light meter selection, please click the article below for details

UV Light Meter Selection and FAQ"

Tags: UV light meter
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