APG LF Series datasheet - Manual (Page 2)

3
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
LF Miniature Liquid Level Sensors
APG
Automation Products Group, Inc.
®
■
Protection from Electrical
Surges
Overvoltage
Reed switches are not designed for
the direct starting of inductive loads
such as motors, contactors, solenoid
valves, etc. They are susceptible
to damage from overvoltages. Do
not exceed the specified switch
ratings listed in the specifications
charts. Contactors should be wired
to miniature relays, suppressors or
similar devices. APG recommends
the use of the relay unit, Model
RCU-7000. (Complete RCU-7000
specifications are located at www.
apgsensors.com)
Overcurrent
Momentary surge currents
produced by switching lamps or
stray capacity from long cable
lengths can weld the reed switches.
Contactors should be wired to our
Model RCU-7000 relay unit, coils
in series, or suppressors. (Complete
RCU-7000 specifications are located
at www.apgsensors.com)
■
Intrinsic Safety
Any of the APG float switch level
controls may be used with APG
Intrinsic Safety Barriers (IS) to meet
hazardous location requirements
for level control device. For more
information see www.apgsensors.
com
■
Ordering Information
Please order by part number, as
shown on the specification charts on
the following pages.
■
Technical Notes
■
The sealing compound over
the lead wire egress prevents
moisture penetration, but is
insufficient to prevent water
penetration. Please install in an
appropriate location or apply a
suitable sealant.
■
If there is surface wave motion,
use a time delay relay to dampen
the switch action.
■
The switch should be located
away from strong magnetic fields
such as those produced by motors
or solenoid valves.
■
Maximum allowable impact is 10
g. Shocks greater than this can
damage the switch.
■
Maximum tensile force on the
lead wire is 4.4 lb. (19.6 N)
Exceeding this during installation
may damage the switch.
■
Wiring
White
(yellow)
Black
(yellow)
Switch
■
Switch Rating
See specification charts on the
following pages.
■
Submersibility
These miniature liquid level
switches are not designed to operate
when fully submersed. The LFS-
VE-S1 and LFS-VE-S2 series float
switches can be submersed for
short periods up to 76 hours under
500 mm depth of water at 20°C
temperature. Water will penetrate
the float for elevated temperatures
and/or greater depths.