Campbell Scientific CS700 Tipping Bucket Rain Gage and CS700H Heated Rain Gage - Manual (Page 4)

CS700 and CS700H Table of Contents
ii
Appendix
A. CS700H Operation................................................... A-1
A.1 High Power Operation ............................................................................ 3
A.2 External Control...................................................................................... 3
A.3 Status LED .............................................................................................. 4
A.4 Snow Sensor............................................................................................ 4
A.5 SDI-12 Interface...................................................................................... 5
A.5.1 Special – X Commands ................................................................. 7
A.5.2 Operating Modes ......................................................................... 10
A.5.3 Command Examples.................................................................... 11
A.5.3.1 Proving Communications is working ............................... 11
A.5.3.2 Taking a Measurement ...................................................... 11
A.5.3.3 Example of Manual Mode Operation ................................ 11
List of Figures
1-1. The CS700 (left) and CS700H (right) .................................................... 2
2-1. Heater Operation..................................................................................... 3
3-1. CM240 Mounting Bracket...................................................................... 6
3-2. Typical Rain Gage Installation ............................................................... 6
3-3. Pedestal Base Options ............................................................................ 7
3-4. Main Components of the CS700............................................................. 8
4-1. Rain Gage Schematic.............................................................................. 9
4-2. Phoenix Contact Power Supply ............................................................ 11
7-1. Components of CS700 Base ................................................................. 19
7-2. Dismantling the Filter/Siphon Assembly.............................................. 20
7-3. Filter/Siphon Assembly ........................................................................ 21
7-4. Reassembling the CS700 ...................................................................... 22
A-1. Locations of the CS700H’s Heater Components ............................... A-1
A-2. Diagram Depicting Overall Operation............................................... A-2
A-3. Diagram showing how the “Snow Run-On” timer
controls the heater.......................................................................... A-3
List of Tables
4-1. CS700 Wiring for Pulse Channel Input.................................................. 9
4-2. CS700 Wiring for Control Port Input ..................................................... 9
4-3. CS700H Sensor Cable Wiring for Pulse Channel Inputs ..................... 10
4-4. CS700H Sensor Cable Wiring for Control Port Inputs ........................ 10
4-5. CS700H Power Cable Wiring............................................................... 11
A-1. CS700H Default Values .................................................................... A-1
A-2. Status LEDs ....................................................................................... A-4
A-3. Snow Sensor Power Options ............................................................. A-5
A-4. SDI-12 V1.2 COMPLIANT COMMAND SET – Go to
www.sdi-12.org ............................................................................. A-6
A-5. Special X Commands......................................................................... A-8
A-6. Operating Modes ............................................................................. A-10