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MODEL RG-11
OPTICAL RAIN GAGE
IRRIGATION APPLICATION NOTES
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.
For Irrigation Mode, set DIP switch 7 ON and set the
other switches to the desired watering amount. See
the switch table on page 4 for the other Irrigation
settings.
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.
2.78
70.71
.25
6.40
.38
9.53
.75
19.05
2.17
55.20
.41
.75
4.73
10.40
19.16
120.23
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Summary of Contents for Hydreon RG-11
- Page 1 MODEL RG-11 OPTICAL RAIN GAGE IRRIGATION APPLICATION NOTES 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”...
- Page 2 NC connection 24 VAC closes again, and the irrigation cycle resumes normal operation. RG-11 The RG-11 requires a power source and may PWR1 be powered from the transformer that powers the irrigation controller PWR2 DIP Switch 7 is ON for all Irrigation Mode applications.
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Page 3: Specifications
Operating -40 C to +60C Temperature range The RG-11 may be set to provide precise control of an Mode 4: Irrigation Control irrigation system. Typically, the installation will connect to Rain Gage output on means inhibit watering. -
Page 4: Troubleshooting
For example, in the DIP switch settings table above, switch 7 is located on the left hand side of the table. Comparing that to the actual DIP switched on the RG-11 board, DIP switch 7 is located on the right side. - Page 5 - At 6:30, it starts raining and it quickly becomes a downpour. The RG-11 detects the downpour and inhibits irrigation, shown in section 3 on the graph. The RG-11 interrupts the current to the zone valves, and the irrigation water stops. The irrigation controller is still calling for more water, but this is ignored, shown by the dashed lines in section 4.
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