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DATA LOGGING RAIN GAUGE
RG3 and RG3-M
User's Manual
Table of Contents
Welcome ............................................................................................. 2
Specifications ...................................................................................... 2
Functional Overview ........................................................................... 4
Accessing the Logger ......................................................................... 4
Using the Logger for Temperature Measurement .............................. 5
Connecting the Logger to Computer .................................................. 6
Logger Triggered Start ....................................................................... 6
Internal Events .................................................................................... 7
Logger Operation ................................................................................ 7
Data Storage ....................................................................................... 7
Protecting the Logger ......................................................................... 7
Battery ................................................................................................ 8
Mounting the Rain Gauge ................................................................... 9
Maintenance ..................................................................................... 11
Field Calibration ................................................................................ 11
Welcome
Thank you and congratulations on your purchase of a Data Logging Rain Gauge
from Onset Computer Corporation. With proper care, it will give you years of
accurate and reliable measurements. Please be sure that you read and understand
this manual before operating the Rain Gauge.
Contents of This Package
•
Data Logging Rain Gauge, Onset Part No: RG3 or RG3-M
•
Mounting Accessories: 2 Hose Clamps, 3 Screws
•
This User's Manual
Additional Required Equipment
•
Optic USB Base Station and Coupler, Onset Part No: BASE-U-1
®
•
Onset HOBOware
software version 2.1 or later
WARNING: The black-anodized aluminum knife-edged ring is extremely
sharp and can cause injury if not handled properly. Do not press edge against
any body parts as severe cuts and bleeding may occur.
Specifications
Rain Gauge
Maximum Rainfall Rate
12.7 cm (5 in.) per hour
Calibration Accuracy
±1.0% (up to 2 cm per hour for the RG3-M or up to 1 in. per
hour for the RG3)
Resolution
0.2 mm (RG3-M) or 0.01 in. (RG3)
Calibration
Requires annual calibration: can be field calibrated or
returned to the factory for re-calibration
Operating
0° to +50°C (+32° to +122°F)
Temperature Range
Storage
-20° to +70°C (-4° to +158°F)
Temperature Range
Environmental Rating
Weatherproof
Housing
15.24 cm (6 in.) aluminum bucket
Tipping Bucket
Stainless steel shaft and bearings
Mechanism
Dimensions
25.72 cm height x 15.24 cm diameter (10.125 x 6 in.);
15.39 cm (6.06 in.) receiving orifice
Weight
1.2 Kg (2.5 lbs)
Part Numbers
RG3 (0.01 in. per tip)
RG3-M (0.2 mm per tip)
The CE Marking identifies this product as complying with all
relevant directives in the European Union (EU).
2
RG3 and RG3-M Data Logging Rain Gauge User's Manual
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Summary of Contents for Onset HOBO RG3
-
Page 1: Table Of Contents
RG3 and RG3-M Thank you and congratulations on your purchase of a Data Logging Rain Gauge from Onset Computer Corporation. With proper care, it will give you years of User’s Manual accurate and reliable measurements. Please be sure that you read and understand this manual before operating the Rain Gauge. -
Page 2: Functional Overview
Functional Overview Logger The Data Logging Rain Gauge consists of two major components: a Tipping- ® Bucket Rainfall Collector, and a HOBO Event/Temperature Data Logger. Time stamp Resolution 1.0 second Time accuracy ± 1 minute per month at 25°C (77°F), see Plot B. The collector consists of a black-anodized aluminum knife-edged ring, screen, and funnel assembly that diverts rainwater to a tipping-bucket mechanism Operating range... -
Page 3: Using The Logger For Temperature Measurement
Logger-to-Rain Gauge Connection Connecting the Logger to Computer The logger’s black and white input wires are connected to the tipping-bucket The HOBO Event/Temperature data logger requires an Onset supplied Optic output by a terminal block as shown in Figure 1. -
Page 4: Internal Events
3. When you are ready for the logger to start logging, insert the logger into the If the logger is used in a humid location, periodically inspect the desiccant and empty coupler (or place it next to a strong magnet) and remove it after three dry it if it is not bright blue. -
Page 5: Mounting The Rain Gauge
5. Return the circuit board, desiccant pack, and label to the case, carefully General Mounting Considerations aligning the circuit board with the grooves in the case so that the battery • The rain gauge housing MUST be mounted in a LEVEL position. faces the ridged side of the case. -
Page 6: Maintenance
The reason for this is obvious if the tipping bucket assembly is © 2005–2013 Onset Computer Corporation. All rights reserved. Onset, HOBO, and HOBOware are registered trademarks of Onset Computer Corporation. Other products and brand names may be observed in operation.
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