Bubbler level sensor PS-Light-2

Robust, reliable and accurate: Using a high-performance, durable and brushless small compressor, air is forced at adjustable measuring intervals into the water via a tube. The pressure generated in the transmission line corresponds exactly to the hydrostatic pressure over the outlet nozzle. This is measured using a ceramic pressure measuring cell in the PS Light-2. Prior to each measurement a sensor drift compensation occurs. PS-Light-2 is as precise after many years of operation as on day one.

Maintenance-free:
The measuring cell of the PS-Light-2 does not come directly into contact with the measured medium and therefore does not have to be cleaned regularly of deposits (e.g. lime).

Safe:
Since, as is generally known, air is not conductive, elaborate electronic overvoltage protection can be dispensed with.

Self-sufficient:
PS-Light-2 engages in a continuous measurement operation and can easily be autonomously supplied with solar panels (e.g. 50 W panel, at 5-minute measuring interval and 1/4 hourly transmission).

Last but not least:
The measurement system is available in several versions PS-Light-2 sensor with or without an LCD, PS-Light-2-LCD with an integrated data collector and as a compact data transferring station PS-Light-2-Modem (including remote data transmission).

 Sensor

Sensor Relative pressure sensor
Measurement Principle Bubble gauge principle (pneumatic)
Measuring Range

0-10m (standard)

0-20m, 0-40m (option)

Measuring Accuracy ± 0.05% FS
Measuring Interval adjustable from 2 minutes onwards

 

Housing

Material Plastic
Dimensions 240 x 160 x 94 mm (Standard)
Display 3 lines, 16 characters, backlight (option: type PS-Light-2 Sensor LCD, PS-Light-2)
Keyboard 3 function keys
Protection Class IP65
Fastening Wall mounting
Communication Interface RS232, USB, Bluetooth

 

Outputs

Digital RS485: SHWP (standard), SDI-12
Analog

0-1 V, 0-5 V, 0/4-20 mA

*only one of the above outputs can be selected in each case

 

Others

Power Supply 10...24 VDC
Operating Temperature -20 °C...+60 °C
Cable 2 m signal cable included