Water Level Recorder measures conventional float system.Water Level changes are sensed by way of the pulley type contactless magnetic sensing system.They are converted into a digital signal directly. Then measuring values are stored in data logger which is part of the shaft encoder.
Water Level Reorder ( OEL-104) is used for monitoring continuously , Storage of ground-water level and surface water level ( rivers , irrigation channels , dams , lakes , land drainage , ground-water well and flood control ).
With a float–operated Shaft Encoder OEL-104 is able to achive as another break through in Water–Level measuringtechnologies.
It has due to easy handling and impressive cost–effective ratio. The OEL-104 Shaft Encoder is an ideal device for modernization of existing measuring locations.
We offer an optionally installation set for 4' well–pipes and bigger for ground water monitoring.
Technical Details:
Data Logger
MODEL: OEL-104
Type
Floating.
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 , manuel 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 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
RS232 interface serial port and USB out (optional) , RS485.
Power Supply
Single 3.6 Volt DC , 8500 mAh. C size Lithium Battery.
Battery Life-Time
Battery Life-Time > 10 years. No battery change necessary.
Sensor Access
24 hour time, accuracy approx. 1 minute one mounth.
Real Time Clock
Quartz – controlled real-time clock. Automatic leap year calculation.
Interval time
The sampling and logging intervals can be preset ( from 1 minute to 24 hours ).
Alarm Signals
High level alarm , Low Level alarm , rate alarm and battery alarms by SMS messages sending to : GSM Cell phones telephones and PC`s numbers (incoming alarms are automatic cally provided from measuring stations).
Red Out Unit
4 – 20 mA , 0 -5V , 0 – 10 V outputs.
Protected Data
No data less even if Battery fails, data stored in EEPROM.
Protection
Not affected by humidity and dust ( IP67 protection ).
Working Temperature
-20C to + 70C
Storage Temperature
-40C to + 80C
Humidity
98 % relative.
Shaft/Optical Encoder
Sensor
Light Pulse Scan Optical Encoder. Absolute and incremental reading together on logger. 128 definable sectors and 7 tours.
Click here for Limnigraph user manual 
