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H-3301 Digital Shaft Encoder

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The WaterLOG® H-3301 is a digital shaft encoder which measures water level by monitoring the position of a float and pulley. The H-3301 is easy to use and works with any SDI-12 data recorder.

The H-3301 is a precision shaft encoder with a resolution of one part in two hundred (0.005 ft).

The H-3301 is easy to use and works with any SDI-12 data recorder. For older loggers, ALERT systems and the weather service LARK, the H-3301 has a quadrature output that is compatible with Handar 436A type shaft encoder.

The “Serial-Digital Interface” is ideal for data logging applications with the following requirements:
• Battery powered operation with minimal current drain
• Low system cost
• Multiple sensors on a simple three wire cable
• Up to 250 feet of cable between a sensor and the data recorder
(Use of H-423, SDI-12 to RS485 converter extends the range to 1000's of feet)

The H-3301 has the following features:
• Scales the encoder position into user units of feet, meters, etc.
• Precision dual bearing design with special low temperature lubricant
• Threaded shaft compatible with older mechanical shaft encoders.
• Zero backlash
• 200 counts per revolution for the SDI-12 output
• Sealed enclosure protects from moisture and dirt
• Low current operation (less than 800 microamps typical standby)
• High speed encoder circuitry prevents missing counts due to rapid float movement from wave action or sudden movement in freeze/thaw conditions - 15 ft/sec typical
• Water resistant connectors provide easy hookup.

Ordering Information:
H-3301 Shaft Encoder (5/16 in. shaft) with environmentally sealed 7-pin connector Includes 6 ft. hook-up cable.
H-3311 Shaft Encoder with Display (5/16 in. shaft) with environmentally sealed 7-pin connector. Includes 6 ft. hook-up cable.

Accessories
H-260-3 3 in. Polystyrene Float (includes 4 oz. counterweight & hookset)
H-260-4 4 in. Polystyrene Float (includes 10 oz. counterweight & hookset)
H-260-6 6 in. Polystyrene Float (includes 10 oz. counterweight & hookset)
H-260-8 8 in. PVC Float (includes 10 oz. counterweight & hookset)
H-261 Pulley/Float Wheel 12 in
H-261-BRASS . Pulley/Float Wheel, Brass 12 in
H-262-25 Punch Tape (Stainless Steel) 25 ft
H-262-50 Punch Tape (Stainless Steel) 50 ft.
H-262-100 Punch Tape (Stainless Steel) 100 ft
H-263-4 Counterweight (Stainless Steel) 4 oz
H-263-10. Counterweight (Stainless Steel) 10 oz
H-310-SSH
H-3301-CABLE Communication Cable for H-3301 & H-3311 Shaft Encoders