Datasheet

Transmissive Sensor
HOA1879
DESCRIPTION
FEATURES
Phototransistor output
•
Accurate position sensing
•
Choice of detector aperture
•
0.125 in.(3.18 mm) slot width
•
Dust protective housing
•
The HOA1879 series consists of an infrared emitting
diode facing an NPN silicon phototransistor encased in
a black IR transmissive thermoplastic housing. Detector
switching takes place whenever an opaque object
passes through the slot between emitter and detector.
The HOA1879 series employs an IR transmissive
housing which features smooth optical faces without
external aperture openings; this feature is desirable
when aperture blockage from airborne contaminants is
a possibility. The HOA1879-011 and -012 have a 0.060
in.(1.52 mm) dia. detector aperture, while the HOA1879-
015 has a 0.010 in.(.25 mm) x 0.040 in. (1.02 mm)
vertical aperture in front of the detector. This feature is
ideal for use in applications where maximum position
resolution is desired. The HOA1879 series employs
plastic molded components. For additional component
information see SEP8506 and SDP8406.
Housing material is IR transmissive polysulfone.
Housings are soluble in chlorinated hydrocarbons and
ketones. Recommended cleaning agents are methanol
and isopropanol.
DIM_051.cdr
INFRA-40.TIF
OUTLINE DIMENSIONS
in inches (mm)
3 plc decimals
±0.010(0.25)
Tolerance
2 plc decimals
±0.020(0.51)
Honeywell reserves the right to make
changes in order to improve design and
supply the best products possible.
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