

MIDAS WLR - Water Level Recorder
The Standard Instrument Is Fitted With a 0.01% Accuracy Pressure Sensor and Acetal Housing for up to 500M Depth Rating, With a Deep Water Titanium Housed Option Also Available.
Designed for long or short-term deployments in offshore environments, or locations where a traditional shore-based tide gauge is impractical, the MIDASÂ WLR can be moored in line or to the seabed.

Description
The MIDAS WLR comes with a choice of pressure sensor ranges to suit the depth requirement of the operator. The sensor is a revolutionary piezoresistive cell with internal temperature compensation, giving the accuracy and resolution levels usually associated with a resonant quartz sensor but with increased durability, stability and recalibration intervals.
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Specifications
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General
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Year of initial development
2004
Weight in air [kg]
7
Length [m]
0.55
Width [m]
0.088
Height [m]
0.088
Max depth [m]
6000
Battery type
8 x 1.5V C cells
Battery duration [hr]
5160
External body material
Acetal for up to 500m and Titanium up to 6000m
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Data recording and retrieval
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Max. recording capacity [10^6]
2.7
Filtering applied
Y
Direct on site data access
Y
Type of data cable for direct access
RS232, RS485, Other
Max. depth for direct access [m]
1500
Direct remote data access
Y
Type of telecommunication for remote access
RS232, RS485, UHF
Max. distance for remote access [m]
1500
Data format
ASCII, RS232, RS485
Connector
Subcon MCBH10F
Communication protocol
8-1-N-N
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Data characteristics
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Depth resolution [%FS]
0.001
Depth uncertainty [%FS]
0.01
Time resolution [s]
0.06
Clock bias [s/day]
2.4
Min. measurement interval [s]
1
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Sensor
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Type of pressure sensor
Piezo-resistive
Other additional sensors
Temperature
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Data display
-
Data display via third party software
Y
Data display via dedicated hardware
N
Documents

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MIDAS WLR Datasheet1.36 MB