Sensit: Advanced sensors.

Sensit Wind Eroding Mass Sensor

Erosion monitoring solutions

You may like to see the newer Sensit site:

sensit.org

Photo Gallery New, 17mar09: Greenland erosion site courtesy of Dr. Joanna Bullard, Loughborough University, England.

Technical Equipment Resources Update: 16mar09:DPC document, 11mar09:Data logger programs, 17dec08:1)Catcher (BSNE), 2)Easy tower build, 3)Campbell CR1000

Tech Notes Last update: 13mar09.

Technical specs Last update: 21jul08: Model H11-LIN.

UPDATES

THE NEW SENSOR: Model H11-LIN

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Sensit has replaced the long standard model H11B & C with an enhanced version of the saltation sensor. The new model provides the standard data outputs of KE (kinetic energy) and PC (particle counts) compatible with the original Sensit(tm) model H11B sensor. The new H11-LIN model now includes a detailed energy per impact output (PHA data) providing the energy spectrum as a result of every individual particle impact. Note: A pulse height analyzer (PHA) is required. Sensit is working a a PHA module to acquire this large amount of data. Target date: 4th quarter 2008.

Technical information document:

click (New Wiring Diagram - March 16, 2008)

Wiring Color Code
New Model Number - H11-LIN

Outputs

	(brown) KE (pseudo mass flux) - pulse
	(white) PC (particle counts) - pulse

Pulse Energy Outputs (NEW)

	(blue) PHA (energy) - variable pulse height
	(green) GAIN - 1X, 10X.

Power

	(red) Power + 12VDC @ 70ma
	(black) Ground

Technical notes

Data processing technical document

TechNote1: Radial symmetry response vs. response threshold

TechNote2: Sensor radial response symmetry calibration apparatus

森斯特

Wind Eroding Mass Sensor

Model H11-LIN improvements:

	New data output: The model H11-LIN has an additional output providing the kinetic energy of every individual particle impact. This data is in the form of a variable pulse height signal. A pulse height analyzer (PHA) module to capture this data should be available by the 4^th quarter 2007.
	Programmable Gain: Sensitivity can be increased by 10X externally via data logger or by physically connecting a wire to +12V.
	Superior seal: The crystal mounts now extend over the ends of the crystals providing a superior seal and protecting the edges.
	Lower power: The new sensor draws 70ma versus the previous 90ma current requirement.
	Asymmetrical response: Uniform radial response has now been achieved by nickel plating the crystal surface.
	No multiple counts: Large energy impacts do NOT produce erroneous multiple counts.

New Model H11-LIN

Wiring Color Code
New Model Number - H11-LIN

Outputs

	(brown) KE (pseudo mass flux) - pulse
	(white) PC (particle counts) - pulse

Pulse Energy Outputs (NEW)

	(blue) PHA (energy) - variable pulse height
	(green) GAIN - 1X(0V), 10X(+12V).

Power

	(red) Power + 12VDC @ 70ma
	(black) Ground

Model H11B (No longer available)

Older Models - H11B & C

Replaced by Model H11-LIN

(No longer available)

Outputs

	(brown) KE (mass) - pulse
	(white) PC (particle counts) - pulse

Alternate outputs (seldom used)

	(green) KE (mass) - variable pulse width
	(blue) PC (particle counts) -variable pulse width

Power

	(red) Power + 12VDC @ 90ma
	(black) Ground

TechNote3: Sensor radial response symmetry calibration apparatus

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