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PS-Light-2-Sensor/PS-Light-2/PS-Light-2-Modem
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Category: Surface water – Sensors , Data Logger , Remote transmission
- 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 optimized 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
Benefits
Robust, reliable and accurate: Using a high-performance, durable, and brushless small compressor, the 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, 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, the 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).
Application
Water level measurement in flowing waters, lakes, retention basins (flood control reservoirs, storm water overflow tanks), dams and containers
Accessories
Pressure pipe:
Operating software: SEBAConfig (Windows), SEBA Modem Configuration, SEBAConfigApp (Android),
Operating Unit: HDA-Pro HDA Tablet
Data readout: Interface cable (USB, RS232), BlueCon 2 (Bluetooth®)
External power supply: PowerBox (7.2 Ah battery, charger, deep discharge protection, protective housing), power supply unit 230V/12V
Retrieval software: DEMASole
Evaluation software: DEMASvis
Archiving Software: DEMASdb
WEB portal: SEBA Hydro center
Specifications
Parameters: Water level [m],[cm]
Sensor: Relative pressure sensor
Measurement principle: Bubble gauge principle (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
Dimensions: 240x160x94 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
Communications 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
Power supply: 10…15 VDC
Operating temperature: -20 °C…+60 °C
Cable: 2 m signal cable included
Option: PS-Light-2
Logger Controller: 32Bit Flash controller with integrated WatchDog, RTC-IC Real-Time Clock
Memory capacity: 16 MB (= 1.120.000 readings)
Save interval: from 2 minutes upwards
Measurement routines: Single value, average value, event clock, Delta mode, pumping test control
Inlet: SHWP (RS485) for connecting digital SEBA probes (option)
Communications Interface: RS232
Operation: Interface cable (USB/RS232), BlueCon 2 (Bluetooth®)
Modem 3G:
Supported networks: GSM/GPRS/EDGE/UMTS/HSDPA/HSDPA+
Frequencies: 850/900/1700/1900/2100 MHz (Worldwide)
Current consumption: 25 mA/12 VDC (receiving) 100 mA/12 VDC (sending)
Modem 4G:
Supported networks: GPRS/EDGE/UMTS/HSDPA/HSDPA+/LTE
Frequencies: 800/900/1800/2100/2600 MHz (Worldwide)
Current consumption: 140mA/12V send/receive; 10mA idle
GSM: only SMS-alarm and SMS-push; no GSM-retrieval
Antenna:
- Dual-band rod antenna: 900, 1800 MHz
- 5 dB angle rod antenna (optional)
- Puck antenna (optional)
- Directional antenna (optional)
Communication:
- Push protocols: either ZRXP/D channel /CSV
- Data retrieval protocol: SHWP
- SMS data delivery: binary
- SMS alarm: SMS to up to 8 receivers
Pressure pipe: with protective sheath
Dimensions: Inner Ø: 6 mm/4 mm
max. Length: 100 m (standard) Other length customization is possible.
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