1. Product Introduction

The PS-LightⅡ series bubble water level gauge is a bubble-type water level instrument that eliminates the need for bulky nitrogen cylinders and desiccants. It is a high-precision water level sensor originally manufactured by the German company SEBA. It is primarily used in areas where it is inconvenient to construct a well or where well construction is costly, such as reservoir water level monitoring, surge tank water level measurement in hydropower plants, dam piezometric tube monitoring, and upstream/downstream water level observation. The PS-LightⅡ series bubble water level gauge is compact in size, featuring easy installation and maintenance, flexible operation, and high accuracy. It is an ideal water level monitoring instrument for telemetry systems and non-well water level measurement applications.

Compared to traditional third-generation bubble water level gauges, the PS-LightⅡ series does not require air path desiccants or calibration coefficients. Its higher precision design greatly enhances user convenience. After installation and debugging, it truly achieves long-term unattended operation with minimal maintenance.

2.Technical Parameters

· Type: Pressure sensor

· Standard range: 0-10m. Optional large-range sensors are available, including 20m, 40m, 50m, and 70m.

· Full-range accuracy: 0.01~0.05%

· Automatically outputs actual measured values without requiring adjustment coefficients

· No zero drift, intelligent pressure control

· Dynamic pressure adjustment

· Utilizes pressure to clean the air tube before each measurement

· LCD display shows actual measured values, battery voltage, etc.

· Built-in data logger with a storage capacity of 1MB (can store 80,000 monitoring values)

· Built-in compact micro compressor

· Analog signal output: 0~1 V, 0~5 V, 0~20mA, 4~20mA

· Digital signal output: RS232, RS485, SD-12, BCD code, binary code, Gray code output

· Includes a 2-meter signal cable and calibration certificate

· GSM/GPRS (900MHz\1800MHz)

· Lightweight plastic-steel casing (10m: 240*160*94mm; 20m: 240*160*120mm)

· Operating temperature: -20℃ to +50℃