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Model 900 Series Inclinometers:

The dual axis Model 900 is an inexpensive, gravity referenced clinometer with wide dynamic range.  Its small size and high precision make it a versatile choice for many measurement and control applications.

Model 900 measures angular position with respect to the stablest of all external references: the verticle gravity vector.  Its advanced design assures a high repeatability over a standard 40 dedgree measurement span (90 degree optional span).  Model 900 also features a wide input voltage range and signal conditioned analog outputs.  Just install Model 900 and connect it to your volt meter or data acquisition system and you are ready to begin your measurements!

The sensing element within Model 900 is a glass vial half-filled with a conductive fluid.  When the sensor is level the liquid covers five internal electrodes to equal depths.  When the sensor tilts, the depth of the fluid on each electrode changes, altering the elctrical resistance between matched pairs of electrodes.  Model 900’s surface-mount electronics measure these changes, converting them to DC outputs proportional to the volt angles.

Other new 900 series models include a slimline version that measures 0.9 x 3.8 x 0.64 inches (23 x 96 x 17 mm) and a direct digital output version.  Water proof pressure housings are also available.

Specifications:

OUTPUT CHANNELS +/-2.5 VDC per channel, 0-5 VDC available, optional temp channel: -0.4 to 1.0 VDC
ANGULAR RANGE Model 900: +/- 20 degrees                        Model 900-45: +/- 45 degrees
RESOLUTION 0.01 degree of arc
REPEATABILITY <0.02 degree of arc at constant temperature
HYSTERESIS <0.02 degree of arc
LINEARITY Model 900: 1% over half span, 2.5% over full span.  Model 900-45: 6% over full span
TEMPERATURE COEF. 0.05% of reading per degree C typical
SCALE FACTORS Model 900: 10 degrees/volt, Model 900-45: 45 degrees/volt, Temperature 0.1C/mV
TIME CONSTANT 0.25 second
NATURAL FREQUENCY 10 Hertz
OUTPUT IMPEDANCE 270 Ohms, short circuit protected
POWER REQUIREMENTS +8 to _24 VDC @ 7mA, 250 mV peak to peak max, reverse polarity protected
ENVIRONMENTAL -10 to + 50 Deg C, 0-80% humidty
SIZE & WEIGHT 2 x 2 x 0.64 inches (51 x 51 x 17 mm)
MOUNTING Four 0.125” no. 4 mounting holes
MATERIALS Liquid filled glass sensor, fibergalss PC board

 

Copyright 2002-2005 Ocean Innovations
7709 Prospect Place * La Jolla, CA 92037
Phone: (858) 454-4044 * Fax: (858) 454-5775
Please contact: brock@o-vations.com
with all of your questions.