Pneumatic Gauge PS-Sensor
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Category: Surface water – Sensors
- Continuous bubble sensor for fast detection of water level changes
- automatic pressure range detection for maximum measuring accuracy (0.05% FS)
- Display with function keys for measured value indication
- Measuring ranges: 0-10/17/20/30/35/40 m
- Long-term stability due to intelligent sensor drift compensation
- Available with digital (RS485: SHWP, SDI-12, MODBUS) or analog output (4-20mA, 0-1V, 0-5V)
- Various configuration possibilities, e.g. number of bubbles per minute, measuring cycles, etc.
- Including automatic blow-through, compressor and air reservoir (0.75 l)
Benefits
High-precision: Equipped with two pressure sensors and an automatic pressure range detection, the PS sensor also meets the highest demands on measuring accuracy. In addition, the typical, age-related drift of pressure sensors is compensated by an automatic, processor-controlled 0-point calibration before each measurement. This means that even after many years of operation, the bubble system is just as precise as on the first day.
Maintenance-free: Due to the measuring principle, the pressure measuring cell does not come into direct contact with the measuring medium water. Regular, often maintenance-intensive cleaning of the measuring cell due to deposits (e.g. lime, bio-film) is not necessary. The automatic blow-through device in the PS sensor ensures that the pressure transmission line is flushed regularly, thus preventing the bead nozzle from silting up.
Safe: After the PS sensor can be safely housed in the water gauge house or switch cabinet, mechanical damage, e.g. from vandalism, flotsam, etc., can be ruled out. Cost-intensive lightning protection measures can also be dispensed with on the sensor side, as the air introduced into the water by the PS sensor is non-conductive.
Compatible: The PS sensor has all common analog and digital outputs and can be connected to all SEBA data collectors, to data collectors of other manufacturers (e.g. via SDI-12) and to process control systems (e.g. via Modbus, 4-20mA).
Everything in it, everything on it: Extremely compact and equipped with an integrated compressor and air reservoir, a display with function keys, an automatic blow-through device, and further features, the PS sensor leaves nothing to be desired.
Application
Monitoring of watercourses, dams, flood retention basins and locks
Accessories
Data logger: UnilogCom, NetLogCom, Unilog
Specifications
Parameters: Water level [m], [cm]
Sensor: Relative pressure probe, microprocessor compensated (32Bit)
Measuring principle: Bubbler principle (pneumatic)
- 0 – 10 / 0 – 4 m
- 0 – 17 / 0 – 4 m
- 0 – 20 / 0 – 4 m
- 0 – 30 / 0 – 6 m
- 0 – 35 / 0 – 6 m
- 0 – 40 / 0 – 6 m
Accuracy: +/- 0,05 % FS = 1 cm bei 0-20 m measuring range
Measuring interval: ≥ 1 min
Housing Material: Synthetic (Polycarbonat)
Dimensions: 430 x 330 x 190 mm (LxBxH)
Display: 3 lines, 16 characters (optional: backlight)
Operation: 3 function keys
Protection: IP65
Mounting: Wall mounting
Dosing valve: Step-less (for adjustment and monitoring of the air volume)
Compressor: 7bar (101,5 psi)
Air storage: 0.75 liters, stainless steel
Automatic Flushing mechanism: Adjustable (1/6/12/24 h) to prevent sludge formation / Contamination of the beading out an opening
Communication Interface: RS 232, USB, Bluetooth®
- Digital: RS485: SHWP, SDI-12, MODBUS
- Analog: 4…20mA, 0-1V, 0-5V
Power supply: 10…15VDC
Operating temperature: -35° C … +65° C
Cable: 2 m signal cable included
Pressure line with protective jacket:
Dimensions: Øi / Øa/ Øa: 6/8/10 mm (double-walled)
Max. Length: 100m (300m option)
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