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Water Level Recorder With Pressure Probe
Description

Water–Level values are measured by an oil free titanium reference pressure measuring cell which senses a hydrostatic pressure of the
water column by a pressure with a capacitive diagram and converts this value into an electrical signal.Then measuring values are stored in
data logger which is built into the body of the pressure probe.
The PSL-037 Water Level Recorder with GE-Druck–PDCR/1830 pressure probe is especially designed for the continuous recording of
ground water level , surface water level , waste water level and tank level.

  • In pipes and bore holes of small diameter ( 2’’ ).
  • In large depths ( max. 300 m , up to 600 m ).
  • Not exactly in vertical bore holes or pipes.
For water level measurements are not permanently in water carrying river beds.( wadis , storage basins , etc. )
 
 
Type Pressure Sensor
Memory 256 Kbytes (Ring Memory) , EEProm
Memory Storage Mode Circle Mode ( cyclic over writing old data )
Memory Storage Capacity Storage capacity of data over approximately 15 years at a storage interval of 1 hour.
Storage of Water level , real time and date , alarms , manual correction of data (observer) with time and date, observer records. During readout, the sampling process is not disturbed.
LCD Display 3-lines dot matrix LCD Display , each of 12 characters. Shows actual water level , date / time , Level alarms , storage memory , sampling interval , min. / max. Value , last change of battery , last readout , actual and setup parameters , error messages and measured values. 15 sec. Auto. shut off.
Keypad 3 keys. Built – in touch keypad for operation and setting via keypad
Data Transfer Rate 19200 bps ( 9600 bps scalable )
Communication Desktop Computer
RS 232 interface
Desktop Computer
Notebook
Telephone Line Modem
GSM/GPRS Data Modem
Palmtop
Flash Card ( 2 Mbytes )
RF modem ( optional ) , Satellite ( optional )
Ports RS232 interface serial port and RS485 Serial Port , USB
Power Supply Single 3.6 Volt DC , 8500 mAh. C size Lithium Battery
Battery Life-Time > 10 years. No battery change necessary
Sensor Access 24 hours time , accuracy approx. ± 1 minute per each mounth
Real Time Clock Quartz – controlled real-time clock. Automatic leap year.
Interval time The sampling and logging intervals can be preset ( from 1 minute to 24 hours )
Alarm Signals High water level alarm , Low Level alarm , rate alarm and battery alarms by SMS messages send to : 2 units pocket telephones and 2 units PC. ( numbers incoming alarms automatic call from measuring stations)
Red Out Unit 4 – 20 mA , 0 -5V , 0 – 10 V. outputs
Pressure Probe Druck-PDCR 1830
Measuring Pressure Range 0.75 mH2O to 600 mH2O
Operating Pressure Ranges 0.75 , 1.5 mH2O gauge , 3.5 , 7, 10 , 15 , 20 , 35 , 50 , 70 , 100 , 150 , 200 , 350 , 600 mH2O gauge and absolute
Media Compatibility Fluids compatible with titanium and polyurethane cable assembly
Excitation Voltage 10 V. at 5 mA. nominal
Pulse Power Excitation 10 msec.
Output signal 25 mV. for 0.75 mH2O range 50 mV. for 1,5 mH2O and 3,5 mH2O ranges 100 mV. for ranges 7 mH2O and above
Output impedance 2 K? nominal
Accuracy ± 0.06 % FS BSL maximum
Operating Temperature range -20°C to + 60°C
Compensated Temperature Range -2°C to + 30°C
Cable Lengths 1 m up to 500 m pressure – compensation capillary tube
Probe Dimensions Diameter: 17,5 mm , Length 105 mm , weight 35 gr.
Protection Fully welded titanium construction.Water ingress protection IP68 to 700 mH2O

Options

Flash Card Data Reading unit with driver. Capacity is 2 Mbytes.

GSM /GPRS Data Modem

Wirless Data, voice and SMS HS CSD up to 19200 bps alarm monitoring.
Telephone Line Modem V. 34 bis full dupplex data collector , alarm management ,up to 33600 bps
Palm Top Pocket PC , Intel PXA 255 , 400 MHz.
Read Out Unit 4 - 20 mA , 0 5 V. , 0 - 10 V. Outputs.
 
 
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