- Compact, robust measurement system for measurement of water level using the "bubble gauge" principle
- High accuracy (0.05% FS) and long-term stability through smart sensor drift compensation
- Measuring ranges: 0-10 m (standard), Option: 0-15 m, 0-20 m, 0-30 m, 0-40 m, 0-70 m
- Low energy consumption through optimised pump control
- Wide range of output signals 0-1 V, 0-5 V, 0/4-20 mA, RS485 (SHWP/SDI-12) for uncomplicated connection to external data collectors or to process control systems (SPS)
- Easy installation in the existing water level stations, protective housing or control cabinets
- Optionally available with integrated data collector, type PS-Light-2, as well as a GSM modem for remote data-transmission: PS-Light-2-Modem
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).
| Measurement Principle | Bubble gauge (pneumatic) |
| Measuring Range | 0-10, 0-15, 0-20, 0-30, 0-40, 0-70 m |
| Measuring Accuracy | ± 0.05% FS |
| Measuring interval | adjustable from 2 minutes upwards |
| Housing Material | Plastic |
| Display | 3 lines, 16 characters, backlight (option: type PS-Light-2 Sensor LCD, PS-Light-2) |
| Protection Class | IP 65 |
| Communications Interface | RS232, USB, Bluetooth |
| Digital Outputs | RS485: SHWP (standard), SDI-12 |
| Analog Outputs |
0-1 V, 0-5 V, 0/4-20 mA *) only one of the above outputs can be selected in each case |
| Power Supply | 10...15 VDC |
| Cable | 2 m signal cable included |
