Gill Instruments Ltd
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MaxiMet Page 3 Issue 3
Doc. No. 1957-PS-021 May 2018
4.10. Using the MaxiMet GMX531 with a Supplied Kalyx Rain Gauge or
GMX550/GMX551 (user supplies a Rain Gauge) ....................................................... 24
4.11. Using the MaxiMet GMX541 with supplied Gill Solid State Rain Gauge. ......... 26
4.12. Set-Up Requirements ..................................................................................... 27
4.12.1 Host System .......................................................................................... 27
4.12.2 Software ................................................................................................ 27
4.12.3 Bench System Test................................................................................ 27
4.13. Packaging ....................................................................................................... 27
5. INSTALLATION ......................................................................................................... 28
5.1. General Installation Guidelines ....................................................................... 28
5.1.1 Interference ........................................................................................... 28
5.1.2 Wind ...................................................................................................... 28
5.1.3 Compass ............................................................................................... 29
5.1.4 GPS ...................................................................................................... 29
5.1.5 Solar...................................................................................................... 29
5.1.6 Tilt ......................................................................................................... 29
5.1.7 Rain ...................................................................................................... 30
5.1.8 General Alignment ................................................................................. 32
5.1.9 Mounting Tube e.g. Gill Part 1405-30-056. ............................................. 32
5.1.10 Mounting Bracket e.g. Gill Part 1771-PK-115 ......................................... 33
5.1.11 Dimensions (in mm) ............................................................................... 34
6. CONFIGURING WITH METSET................................................................................. 38
6.1. MaxiMet Default Configurations ...................................................................... 38
6.2. Configuring MaxiMet with MetSet.................................................................... 55
6.2.1 Opening MetSet..................................................................................... 55
6.2.2 MetSet Editing Screen ........................................................................... 57
6.2.3 MetSet Online Settings .......................................................................... 58
6.2.4 MetSet Editing Pages ............................................................................ 58
6.3. Polled Mode .................................................................................................... 69
6.3.1 Configuration for Polled Mode (MaxiMet Set for Power Mode 0) ............. 69
6.3.2 Data Retrieval in Polled Mode (MaxiMet Set for Power Mode 0) ............. 69
6.4. Configuring MaxiMet for SDI-12 ...................................................................... 70
6.4.1 SDI-12 Units of Measure ........................................................................ 70
6.4.2 SDI-12 Commands ................................................................................ 71
6.4.3 SDI-12 Commands with CRC ................................................................ 73
6.5. Configuring MaxiMet for Modbus .................................................................... 76
6.5.1 MaxiMet Supported Modbus Specification.............................................. 76
6.6. Configuring MaxiMet for NMEA 0183 Output .................................................. 88
6.6.1 GMX100 NMEA Output String................................................................ 88
6.6.2 GMX101 NMEA Output String................................................................ 89
6.6.3 GMX200 NMEA Output String................................................................ 90
6.6.4 GMX240 NMEA Output String................................................................ 91
6.6.5 GMX300 NMEA Output String................................................................ 93