SDI-12 Depth Sensor

Offering better than 0.01 foot accuracy, these are the same sensors as used extensively by the Oregon Water Resource Department. These sensors are available with either a 4--20mA (slightly less accurate), or SDI-12 interface, are temperature compensated, vented, and are less than 1 1/4 inches in diameter. Constructed of stainless steel, all internal parts are conformal coated for further protection. Resolution is better than 0.001 foot and readings for both level and water temperature can be logged. 4-20mA Units are available in ranges from 3.5 feet of water up to 350 feet.

The SDI-12 Depth Sensor provides both depth and temperature signals. Designed for use with any 4-20mA or SDI-12 data logger.

TYPICAL APPLICATIONS

Many applications involve the replacement of older mercury manometer systems, where there is still a need to provide onsite chart recording via a mechanical drive output. The SDI Depth Sensor and AxSys MPU are both fully compatible with the Stevens Electro ChartDrive (ECD) unit. This unit monitors the SDI-12 signals to determine a depth reading from the sensor. This is then translated into a mechanical shaft output for driving chart recorders such as the Stevens A-71.

    Priced from $735.00 15' Cable included
    0-3' 4-20mA output
    0-17' SDI-12 output $995.00

    over 17' $1075.00

Specifications

Ranges 0 to: 3.5, 8.0, 17.5, 35, 70, 175, 350 feet
Overpressure 3X
Accuracy, depth .05% or .01 feet, whichever is greater
Accuracy, temp < 1 C
Operating temp -20 to +70 C
Power 7.5 to 28 VDC, 600 uA stand-by
Max. Cable Length 1500 feet
Communication Multidrop serial, three wire SDI-12, ASCII 7 bits, even parity, one stop bit

ORDERING INFORMATION

Specify maximum depth
Specify Cable length