APG OPL datasheet - Manual

1
Automation Products Group, Inc.
1025 West 1700 North
Tel. 1/888/525-7300
Logan, UT 84321 USA Fax 1/435/753-7490
w w w . a p g s e n s o r s . c o m
s a l e s @ a p g s e n s o r s . c o m
OPL Optical Liquid Level Sensors
APG
Automation Products Group, Inc.
®
OPL
Optical Liquid Level Sensors
■
Very small OEM type optical level
sensors
■
Standard rubber grommet fitting
for commercial applications
■
Estel sensor material suitable for
pure water and most oils
■
Polysulphone sensor material
option for acids and alkalines or
high temperatures
■
Operational Description
The OPL series utilizes the optical
principles of a prism to detect the
presence or absence of a liquid
as compared with air. The sensor
contains a small infrared LED and
a phototransistor light receiver.
Light from the LED is directed into
the prism at the tip of the sensor.
When the container is empty, light
from the LED is reflected within
the prism back to the receiver. As
the liquid rises to cover the sensor,
light is refracted out into the liquid
and is not returned to the receiver.
The change in state is detected and
results in an output signal.
The OPL is designed to meet
standards set by major food and
health agencies around the world. It
conforms to the Japan Ministry of
Health and Welfare and to the FDA
standards in the USA.
UL approved components are
used in construction of the sensor.
Receiver Transmitter Receiver Transmitter
Sensor in Liquid Sensor in Air
C US
Rev. 7.05
■
DC powered at 5 VDC, other
voltages are available on request
■
PNP transistor output