PS-Light-2
short description
Economic measuring system acc. to the bubble principle
Highly precise and robust by drift free sensing
Processor supported sensor linearisation
Low energy consumption thanks to intelligent pump control
Modular system
Optionally with 0..1V, 0..5V, 0/4..20mA BCD-, Binary- or Gray-Code output
building site simple installation PS-Light-2 station
measuring site application at
a river
Description
The SEBA-pneumatic gauge type PS-Light-2 serves as a robust, economic and reliable measuring system for monitoring water level in surface waters. The measuring principle is the proportioning or bubbler system, based upon the other well-known SEBA instruments in the PS-series.
An integrated, highly efficient mini compressor, bubbles air through the pressure tube into the water at adjustable intervals. The resultant pressure in the tube corresponds exactly to the hydrostatic pressure above the mouthpiece. This tube pressure is then measured by a very accurate pressure sensor in the PS-Light-2 . The intermittent operation of the PS-Light-2 allows low energy consumption, and enables operation with batteries or solar panels, without the need for mains power supply.
The basic version of the PS-Light-2 is a sensor with optional output. However it can be equipped with LC-display, datalogger or remote data transfer via GSM/GPRS. The basic version is delivered in a robust protective housing (IP65) suitable for wall or desk mounting. SEBA PS-Light-2 can be connected to existing pressure tubes at any time.
Individually available as:
- sensor with analogue or digital output
- sensor with SEBA datalogger
- data transmission system with GSM/GPRS
or telephone modem
Options:
1. LC-display
2. output signals: galvanically separated
- 0..1V, 0..5V
- 0/4..20mA
- BCD-Code, Gray-Code, Binary-code
PS-Light-2 Variations
PS-Light-2-Sensor
consisting of:
highly accurate pressure sensor for measuring the water level
mini compressor
output: optional 1 from 7
plastic protection housing
PS-Light-2-Sensor-LCD
consisting of:
highly accurate pressure sensor for measuring the water level
mini compressor
output: optional 1 from 7
plastic protecction housing
LC-display for digital indication of water level
PS-Light-2 (-Logger)
consisting of:
highly accurate pressure sensor for measuring the water level
mini compressor
output: optional 1 from 7
plastic protection housing
datalogger with RS232 interface for online- and offline operation
PS-Light-2 (-Logger) -LCD
consisting of:
highly accurate pressure sensor for measuring the water level
mini compressor
output: optional 1 from 7
plastic protection housing
datalogger with RS232 interface
LC-display for digital indication of water level
PS-Light-2 GSM
consisting of:
highly accurate pressure sensor for measuring the water level
mini compressor
output: optional 1 from 7
plastic protection housing
datalogger with RS232 interface
LC-display for digital indication of water level
with integrated GSM/GPRS modem
Options:
modem for PS-Light
modem for PS-Light-LCD
puck antenna
directional antenna (fixing on mast)
bubble mouth piece
pressure tube**
**Please specify length of tube when ordering!
Technical Data
housing: weight:
PS-Light-2: plastic material (IP65), 240(w) x 160(h) x 94(d) mm 1,6kg
240(w) x 160(h) x 124(d) mm 2,0kg
250(w) x 410(h) x 100(d) mm 4,5kg
PS-Light-2
Resolution: 1mm
sensor linearity: 0,05% of the measuring range
measuring ranges: 0 - 10m, 0 - 20m, 0 - 40m, 0 - 70m
operating temperature: -20°C up to +50°C
outputs: standard: 0 - 5V, RS232, optional: USB, RS 485, 0/4...20mA, BCD /Gray-Code
measuring interval: 1, 2, 5, 15, 30, 60, 120 or 180 minute(s) by an internal activation in the PS-Light-2 or free programmable.
total accuracy: linearity + hysteresis + repetition accuracy < 0,1%
SEBA-datalogger:
microprocessor: 16bit
storage of measuring values: in real time
resolution: 12bit
Flash-memory: 1MB for approx. 80.000 measuring values (respectively 480.000 measuring values)
serial communication interface: RS232 (RS485, USB)
power supply: with 12V battery
mean values: free programmable
control function: measuring value, time mark
measuring interval: from one minute (free programmable)
option: LC-display for the indication of water level (option)
Transfer of measuring data to PC
offline: via HDA handterminal with readout-software WinBedien CE / SebaConfigCE or via Notebook with readout-software WinBedien / SebaConfig
online: analogue via 0...5V resp. 0/4...20mA output signal
digital via GSM/GPRS-network or via fixed network telephone connection
Power supply
- PS-Light-power-supply, 220VAC/12VDC
- PS-Light-power-supply, buffered with 100Ah
- PS-Light-power-supply, buffered with 7,2Ah
- Battery 100Ah
- Solar power supply is possible
Readout Software :WinBedien/WinBedien MODEM (telecontrol)/SebaConfig and DEMASdb OLE
Management Software:DEMASdb / MGMDS / MLMDS
Producing Area：Germany