The Model 6541C Precision Water Level instrument can achieve operating accuracy and resolution of 0.2mm. This accuracy is maintained for the service life of the instrument without calibration or maintenance, apart from battery changes.
This instrument has the range to monitor surface and underground waters, and the precision to monitor rainfall and evaporation.
The instrument is normally connected to the water surface by a float system. As the water level changes, the input shaft rotates. An optical encoder is mounted on the input shaft. On installation, the instrument is set to display the water level.
The encoder is continuously monitored as the instrument tracks water level changes. These changes update the LCD display and the readings can be recorded by an associated data logger.
The very low mechanical friction and inertia of the instrument mean that it can produce data with high precision and accuracy. A replaceable battery pack powers the instrument for more than six months. A practical design and rugged construction ensure easy operation and long service life.
Key features of the 6541C Precision Water Level instrument are
The 6541C Precision Water Level Instrument is available in a number of models. The key differentiating features are the:
Range: Standard 0 to 65.5 metres. Switch to 13.1 metres or 65.5 feet
Resolution: 1.0mm, 0.2mm or 0.01 foot, depending on the float pulley used
Accuracy: Same as resolution when a suitable float system is used
Tracking: Up to 500mm/second
Display: 6 digit LCD
Temperature: -10° to 60°C
Cable: 5 metres (supplied). Up to 30 metres can be used
Size: 275mm x 180mm x 140mm (H x W x D)
Weight: 2.7kg (including battery)
Enclosure: Rigid PVC IP67
Output: SDI-12 and Dual STARBUS HSIO standard. Option for programmable 4-20mA output
Power: Internal alkaline battery pack (Model 6910A)
Battery life expectancy is 12 months. External battery power 9-15VDC can be connected
|6541C-10||Water Level Instrument with 500mm Pulley|
|6541C-11||Water Level Instrument with|
500mm Pulley and 6910A Alkaline Battery Pack
|6541C-11-C||Water Level Instrument with MicroLogger 8010C, 500mm Pulley and 6910A Alkaline Battery Pack|
|6541C-20||Water Level Instrument with 12in Pulley|
|6541C-21||Water Level Instrument with 12in Pulley and 6910A Alkaline Battery Pack|
|6541C-21-C||Water Level Instrument with MicroLogger 8010C 12in Pulley and 6910A Alkaline Battery Pack|
|6541C-30||Water Level Instrument with 100mm Pulley|
|6541C-31||Water Level Instrument with 100mm Pulley and 6910A Alkaline Battery Pack|
|6541C-31-C||Water Level Instrument with MicroLogger 8010C|
100mm Pulley and 6910A Alkaline Battery Pack
|6541C-CL||Additional parts for 4-20mA option|
|6541D-I||Imperial Beaded Floatline 3 inch spaces fits 12in Pulley|
|6541D-M||Metric Beaded Floatline, 125mm spaces fits 500mm Pulley|
|6541E||Unbeaded Floatline, 0.4mm dia fits 100mm Pulley|
|6541F-115||Float Assembly 115mm Cylinder|
|6541F-170||Float Assembly 170mm Cylinder|
|6541F-60||Float Assembly 60mm Cylinder|
|6541F-90||Float Assembly 90mm Ovoid|
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6541C Precision Water Level Instrument