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Magnetic Endcoder Limnigraph (MEL - 200)

Mechanical measurement of the water level by means of a float system. The oldest and most precise measurement method known. Recording the water level at the desired time interval.

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MEL-200 MAGNETIC ENCODER LIMNIGRAPH

It is a Next Generation Float Limnigraph of AQUADATA Elektronic's.

MEL-200 Limnigraph is used in rivers, dams, lakes, irrigation canals, flood controls, waste water management, coastal design, underground wells and environmental studies for water level measurements.
MEL-200 automatically stores water level measurement in the desired recording interval and also MEL-200 has RS-485, 4…20 mA and RS-232 outputs. The data can be transferred from the RS-232 port and USB port of the Limnigraph to the computer in excel, xml and text file formats. If the modem is connected, it can be transferred to remote computer in excel, xml and text file formats. This data can be viewed graphically through the program.
Data logger’s LCD display shows water level, date and battery values instantly. Parameter values can be changed and offset values can be adjusted via keypad.
When the display is activated by pressing the up button, the display shows the instantaneous water level value. Flow and volume information can be reached with up and down keys.

With the laptop, modem and keypad: Station Number, Station Name, Basin Number, Zone Number, Equal Level, Date and Time, Data Record Interval identification operations can be performed. The Level vs. Flow table can be copied to the datalogger memory.
The system uses solar panel and gel battery as power source. It continues to work with solar energy for years without the need for an external power source. The system can also be used directly with main power.
It is an ideal system for all applications in level or level-related flow and volume measurement in water and wastewater treatment plants. The error rate is quite low compared to other systems.

Memory	8 GB Ring Memory
Operation Temp.	-40°C to +80°C
Accuracy	±1 mm
Resolution	1 mm
Monthly Time Deviation	±1 min/month Automatic leap year calculation
Data Recording Interval	Data Recording Interval can be chosen as (1’, 5’, 10’, 15’, 30’, 60’ and multiples)
LCD Display	128x64 Graphic Dot Matrix / with back light
Keypad	4 Button Keypad (Battery, Instant Level, Instant Date, Flow and Setup information can be displayed on the screen at the same time.)
Level Changing Detection	Detect and record minimum 25.6 cm/sec level changes
Magnetic Encoder Lvl Measuring Range	0 cm … 9999.999 m.
Setup	Full installation and data collection can be done via GPRS modem (remote access) or it can be done by computer via USB or RS-232.
Interface Ports	RS-232, RS-485, USB 4…20 mA. Analog Output
Battery	3.6 V. Lithium for RTC (Life time of battery 10 years)
Data Recording Systems	2 Type, Instantaneous and Minute Average. (No data loss even if battery fails)
Alarm Status	Flood and Low Level Alarm
Protection	IP67 proteclion.(humidily and dust)
Data input	With a laptop, modem and keypad: Station Number entry, Station Name entry, Basin Number entry, Zone Number entry, Chart Level entry, Date and Time entry, Data Recording Interval definition operations can be done and setup. Flow-Abak table can be stored in datalogger memory. It is copied, the flow rate and level passing through the channel are monitored on the LCD screen at the same time.
Parameters of m measurement changes	Level information can be changed optionally (mm., cm., meters, etc.) Also flow information can be changed optionally. (l / sec, m3 / sec, l / min, m3 / min etc.)
Water Level, Discharge and amount monitoring	Water level, Flow and Volume can be calculated, recorded and monitored on the screen by using level information and Level vs. Flow table
Installation Width	Min. 10 cm. up to 100 cm. (Mounting Pipe Diameter)
Shaft Encoder Compatibility	The shaft encoder is compatible with the MEL-200 limnigraph.
Data Transfer Speed	115200 bps, USB: Automatic Boud Rate(ABR)
Power Supply	5,5…35 V. (External)
Accessories	Logger, Pulley, Float, Counterweight and beaded rope works with movement. 20 m with each limnigraph. beaded rope.
External Accessories	AQUADATA GPRS, RF Modem
Box	Aluminum(170x120x55) mm.
Weight	~1,5 kg.
Device Warranty	3 Years
Service Warranty	Lifetime