User manual

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8. Diagnostics, Repair, and Maintenance ................... 20
8.1 Testing Procedure ................................................................................. 20
8.1.1 Start Measurement Command ...................................................... 21
8.1.2 Check Unit Response .................................................................... 22
8.1.3 Check for Valid Data .................................................................... 22
8.1.4 Cyclic Redundancy Check ............................................................ 22
8.1.4.1 Check CRC for Valid Data ................................................ 22
8.1.5 Get Units ....................................................................................... 23
8.1.6 Get Water Conditions ................................................................... 23
8.1.7 Get Power Operation Mode .......................................................... 23
8.2 Diagnostics and Repair ........................................................................ 24
8.2.1 No Measured Value Available — Error E013 ............................. 24
8.2.2 No Measured Value Available — Error E041, E042, E043 ........ 24
8.2.2.1 Exchange Electronics Module ........................................... 24
8.3 Maintenance ......................................................................................... 26
Appendices
A.
Replacing the Cable ............................................... A-1
B. SDI-12 Commands/ Changing Settings ................ B-1
B.1 SDI-12 Command Descriptions ............................................................. B-2
B.1.1 Start False Echo Learn ................................................................. B-2
B.1.2 Set Water Stage ............................................................................ B-3
B.1.3 Query/Set the Address .................................................................. B-3
B.1.4 Set Units ....................................................................................... B-4
B.1.5 Set Water Conditions ................................................................... B-4
B.1.6 Set Power Operation Mode .......................................................... B-5
C. FCC/IC Equipment Authorization (USA/Canada
only) ....................................................................... C-1
Figures
4-1. Polarization markings (see Table 4-4 for label descriptions) ............... 4
5-1. CS475, CS476, and CS477 .................................................................... 9
5-2. Components and hardware (see Table 5-1 for description of
labels) ................................................................................................ 10
6-1. Reference line for measurement range ................................................ 11
6-2. CS475 dimensions ................................................................................ 13
6-3. CS476/CS477 dimensions ................................................................... 14
8-1. Changing the electronics (see Table 8-5 for label descriptions) ......... 26
A-1. Connecting the instrument housing (see Table A-1 for
description of labels) ..................................................................... A-2
Tables
4-1. Default Settings ...................................................................................... 2
4-2. Radiation Beam Spread for CS475 (10° Beam Angle) ......................... 3
4-3. Radiation Beam Spread for CS476/CS477 (8° Beam Angle) ............... 3
4-4. Description of Polarization Markings Labels ........................................ 4
4-5. Example of a Start False Echo Learn Command .................................. 5
4-6. Example for Setting Water Stage........................................................... 5
5-1. Description of Components and Hardware Labels .............................. 10
7-1. Wiring Diagram ................................................................................... 17