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DP550 / DP660 Phototrodes
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General information
The photoelectric probe „DP550 Phototrode" operates with green light (555 nm), and
the „DP660 Phototrode" operates with red light (660 nm). The output signal is 1 VDC at
100% transmittance. The highfrequency light modulation permits significant suppression
of external disturbances caused by sunlight or artificial light. Quite aside from their diffe-
rent designations, the only difference in their external appearance is a red (DP660) or a
green (DP550) cap on the adjustment knob.
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METTLER TOLEDO DP550/DP660
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