Page 5 - STM - Optical sensors for life science applications
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OPTICAL SENSORS for life science applications
Precise detection of liquids
Refraction and attenuation of light are the physical ef-
fects that can be used in the optical detection of liquids.
But they only function truly reliably if they are applied
very precisely, especially in small dimensions.
tube sensors „TS“ micro through beam DL20R/S70
u Reliable use of light refraction requires especially ex-
act guidance of the light beam. The miniature optical
sensors in the MICROmote line, such as the DL20R/
®
S70 through beam light barrier with a light beam as
fine as a precision laser, can also be used with thin
tubes and hoses so that high signal deviations with
large reserves come about.
attenuation measurement u Alternatively the precision tube sensors in the “TS”
line are simply clamped onto the hose, with a stan-
dard amplifier from STM or with the customer’s own
u STM sensors in the “JJ” line, for example, work at a evaluation electronics. Even with small tube diame-
wavelength at which the relatively low optical atte- ters, they deliver signal deviations with a high level of
nuation of water can be converted into a very stable reproducibility. Their usage ranges from exact volume
measuring effect. measurement to reliable detection of micro-bubbles.
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For more information please refer to www.stmsensors.de
