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Jewell Model 906 Little Dipper In-Place Inclinometer

Updated:2026-01-23

Brand: Jewell
Model: Model 906
Description: 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 st
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Product Details

Jewell Model 906 Little Dipper In-Place Inclinometer Description：

Datasheet User Manual Outline Drawing

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).

Specifications

	High-Gain	Standard	Wide-Angle
Angular Range (°)	±12	±30	±50
Resolution (°)¹	<0.005	<0.01	<0.02
Repeatability (°)	0.01	0.02	0.02
Scale Factor (°/V)²	4	10	25
Non-linearity (%)³	Full span: 0.8	½ span: 1 Full span: 4	7
Output Voltage (V)	±2.5 or 0-5
Channels	X-tilt, Y-tilt, Temperature
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; 7mA, 250mV ripple max, reverse polarity protected
Environmental	-25 to +70°C; Submersible to 72psi (5 bar); 100% humidity (non-condensing)
Materials	Cylindrical ABS housing, Delrin (guide fins)
Cable⁴	6-conductor, 24 AWG, PVC jacket, polypropylene insulation, overall shield, 0.2 in. (5mm) diameter, 3m cable included.