Chlorophyll Fluorometer

SCAMP can make vertical profiles of chlorophyll concentration by measuring chlorophyll fluorescence.

The fluorometer's optical components are mounted in a special anodized aluminum sensor end cap, shown in the picture at right. The end cap contains a quartz sample tube that is mounted transversely to the SCAMP's axis and connects to the inlet and outlet elbows shown in the picture. The long, black plastic tube, not completely shown, connects the outlet elbow through a hole in the drag plate. The pressure difference that develops across the drag plate as the SCAMP moves through the water column provides the driving force to pull water through the sample tube. The sample is illuminated by the L.E.D. located at the endocarp's center. Fluorescence is detected by the photo diode located under the cap retained by the white screws as shown in the picture.

Features

	Consists of a high intense blue L.E.D. and a 455 nm interface filter that illuminates a small sample of water.
	The fluorescence of chlorophyll within the sample volume is observed through a 685 nm interference filter by a photo diode detector.
	Electronic circuits pulse the L.E.D. illumination and synchronously amplify the resulting pulses from the photo diode detector.
	Filtered signal is recorded by SCAMP's internal data logger.

Fluorometer FAQs