TABLE OF CONTENTS
1. INTRODUCTION – PRECIPITATION GAUGE
................ 3
1.1. Principle of Operation ................................................................ 3
1.2. Why is it used............................................................................. 3
1.3. Advantages................................................................................ 3
2. INSTALLATION
....................................................................... 4
2.1. Foundation considerations......................................................... 4
2.2. Plan height of collection inlet...................................................... 4
2.3. Locate gauge away from structures and objects........................ 4
2.4. Pedestal installation ................................................................... 5
2.5. Precipitation gauge installation .................................................. 6
2.6. Electrical hookup........................................................................ 7
2.7. Antifreeze - as needed............................................................... 8
2.8. Hydraulic Oil to Eliminate Evaporation....................................... 9
2.9. Loosen Setscrew on transducer................................................. 9
2.10. Replace gauge cover ............................................................... 9
2.11. Install Alter Wind Screen (see Section 4)................................ 10
2.12. Hook up data logger and begin readings ................................. 10
3. REFERENCES
......................................................................... 11
4. MOUNTING INSTRUCTIONS FOR WIND SHIELD
........ 12-17
5. MAINTENANCE
....................................................................... 18
5.1. Tools needed ............................................................................. 18
5.2. Service interval .......................................................................... 18
5.3. Servicing .................................................................................... 18
5.4. Check function of transducer ..................................................... 19
5.5. Removing and replacing transducer .......................................... 20
5.6. Rust protection maintenance ..................................................... 20
6. DRAWINGS / DIAGRAMS / FIGUERS
………………………….
20
6.1. Gauge – vertical cross section – shows parts ............................ 21
6.2. Connection of TH501 Interface & transient arrestor................... 22
6.3. Concrete foundation block ......................................................... 23
6.4. Gauge with 1-m pedestal and Alter windscreen......................... 24