Model 906 Little Dipper In-Place Inclinometer

Model 906 Little Dipper In-Place Inclinometer

Little Dipper is an in-place inclinometer system for monitoring slopes, embankments, deep excavations, tunnels, tank foundations, retaining walls, and other types of ground movement.

SKU: M906 Category:

Little Dipper is an in-place inclinometer system for monitoring slopes, embankments, deep excavations, tunnels, tank foundations, retaining walls, and other types of ground movement.

Installed as a string of vertical or horizontal sensors inside inclinometer casing, or by direct burial, this instrument provides a continuous record of ground displacement. Fiberglass rods connect the sensors inside the casing, and fins or universal pivots couple the sensors to the casing walls.

Little Dipper’s on-board electronics accept a wide input voltage range and drive long cables without signal loss. The waterproof and non-corrodible ABS sensor housing also makes the Little Dipper a popular tool for underwater tilt measurements in shallow marine applications. Select analog voltage output (biaxial) or 4-20 mA output (uniaxial only).

Notes:

1: Resolution calculated at 1mV.
2: Linear scale factor calculated from BFSL through calibration curve.
3: Linearity calculated as max % deviation from BFSL. 0.05% linearity achievable using a polynomial.
4: For additional cable lengths, please specify on order (price per ft.).

*Specifications subject to change without notice on account of continued product development

Weight

350 grams

Dimensions

234.95 x 39.37 mm

Angular Range

±12, ±30, ±50

Resolution

<0.005, <0.01, <0.02

Repeatability

0.01°, 0.02°

Scale Factor

10°, 25°, 4°

Non-linearity (%)

7, Full span: 0.8, Full span: 4, ½ span: 1

Output Voltage (V)

±2.5 or 0-5

Channels

Temperature, X-tilt, Y-tilt

Kz Coefficient (°/C, typical)

±5 arcsec

Ks Coefficient (%/C, typical)

±0.03

Time Constant (seconds)

0.15

Natural Frequency (Hz)

10

Power

+8 to +24VDC, 250mV ripple max, 7mA, Reverse polarity protected

Environmental

-25 to +70°C, 100% humidity (non-condensing), Submersible to 72psi (5 bar)

Materials

Cylindrical ABS housing, Delrin (guide fins)

Cable

24 AWG, 3 m cable included, 5 mm diameter, 6-conductor, Overall shield, Polypropylene insulation, PVC jacket

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