LENS
O-RING
STRETCH BEFORE
INSTALLING
SHADE
NOTCHES IN RING
MATE WITH
RIBS IN LENS
PRINTED-CIRCUIT
BOARD (PCB)
SCREWS
(4 OF #6 X 1”)
HOUSING
19.16
.75
10.40
.41
6.40
.25
19.05
.75
9.53
.38
70.71
2.78
120.23
4.73
55.20
2.17
OPTICAL RAIN GAGE
MODEL RG-11
INSTALLING THE RAIN SENSOR
Mount the rain gage where it gets a clear measurement
of precipitation– away from overhangs, etc.
The mounting arm is designed to fit over a strap 0.75”
(19 mm) wide. Two 0.25” (holes 6.35 mm) are placed
0.75” (19 mm) part.
The gland style connector goes in the bottom hole. Be
sure to use wire rated for outdoor (high-UV) use.
For conduit applications, the mounting arm may be
removed, and the wiring hole drilled out using a step drill
to accommodate a ½” EMT compression connector or
similar style of conduit connector.
Assemble the device as shown. Stretch and release the
silicone o-ring (size -036) a few times, so it fits easily in
the groove. Optionally, you may coat the O-ring and
screws with silicone grease.
Set the DIP switches to the desired mode, and the
desired adjustment within that mode. (See detailed
discussion following)
The Rain Gage must be assembled when dry. Any
water trapped inside can condense and cause corrosion.
You may optionally add extra desiccant packets (not
supplied.) If the Rain Gage is not subject to splashing or
sprayed water, you may optionally vent the enclosure by
drilling a 1/8” (3 mm) hole in the bottom of the case.
MOUNTING ARM
CUT OFF FOR
CONDUIT-MOUNT
LED ON BOARD
ON when OUT
is active
EXPLODED VIEW
- APPLICATION WARNING -
Do not use the RG-11 in any application where the false
indication of water or a missed valid detection of water
could cause damage to life or property. It is the
responsibility of the system designer / integrator to
design redundancy into the system so that the failure of
any one component, including the RG-11 or other
sensor, does not result in disaster. The manufacturer of
the RG-11, Hydreon Corporation, will in no way be
liable for consequential damages due to the failure or
false indication of one of its sensors.
!
VERY IMPORTANT
Stretch the O-ring a few times, so that it fits
easily into the groove on the lens.
!
!
After the unit is assembled, verify that the O-ring is properly
seated by confirming that you can see it through the lens, all
the way around. The O-ring is slightly under-sized for the
groove because that gives the optimal seal.
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