Xylem H-335 - Manual (Page 5)

Chapter 1
H-335 Operation
H-335
H-335 Operation 1-1
Chouteau Lock and Dam, Oklahoma Copan Lake, Oklahoma
1.1 Operation
The W ATER LOG ® H-335 is a precision, single axis, wide range inclinometer which measures the angle
(position) of radial water control gates. The H-335 is easy to use, works with any data recorder/logger with
a SDI-12 interface and can be interfaced with SCADA systems. The “Serial-Digital Interface” is ideal for
data logging applications with the following requirements:
Multiple sensors on a 3-wire bus
Low system cost
Up to 200 feet of cable between a sensor and the data recorder
The H-335 has the following features:
Easily attaches to I-beam of gate structure
Gravity referenced sensor allows installation anywhere on the gate structure
Scales the gate position into user units of feet, inches, meters, etc.
Built-in intelligence automatically calculates both gate height and arc length
No hysteresis or backlash
0.03 accuracy over full position and temperature range
Sealed water-tight enclosure
No moving parts or bearings