Hydrological Services Pty Ltd
Data Logger Model ML1-420
©
Copyright
ML1-420 100-2
Issue 1.00 6 Apr, 2011
TABLE OF CONTENTS
1.
Introduction ......................................................................................................... 3
2.
Product Overview ................................................................................................ 4
2.1
Overview ............................................................................................................... 4
3.
Installation ............................................................................................................ 4
3.1
Hardware Connections ....................................................................................... 5
3.1.1
Contact Closure input ......................................................................................... 6
3.1.2
External Power Supply ....................................................................................... 6
3.1.3
4-20mA Transducer Input .................................................................................. 7
3.1.4
Communications .................................................................................................. 7
3.2
Setup and Configuring the Logger .................................................................... 9
3.2.1
Site Information ................................................................................................... 9
3.2.2
System Time/Date ................................................................................................ 9
3.2.3
Parameters ............................................................................................ 9
3.2.4
Communications .................................................................................................. 10
4.
Operation .............................................................................................................. 11
4.1
Commands / Syntax ............................................................................................. 11
4.1.1
On-line Help (?) ................................................................................................... 11
4.1.2
Communications (BAUD, EV, RE, CLEAR) .................................................... 12
4.1.3
Battery Voltage (BV, BVINT) ............................................................................ 13
4.1.4
Temperature (TEMPC) ...................................................................................... 13
4.1.5
Digital Channel Parameters (CHID, INC, TDAY, TOT, TYPED, UD) ......... 14
4.1.6
4-20mA Channel Parameters (CHIDRV, RVHR, TXI, …..U420, WL) ......... 15
4.1.7
Date/Time Parameters (D, FMT, T, TA) ........................................................... 17
4.1.8
Dump Log Records (DUR, DURV, ….DUALL, CLR, CLRV, MW, LOG) .. 18
4.1.9
Miscellaneous (ID, SI, PASSWD, BYE, SLEEP, RESET, VER) .................... 21
4.1.10 Status Window (ST) ............................................................................................... 22
4.2
Data Output Format ............................................................................................ 24
4.2.1
Dump Log Record ............................................................................................... 24
5.
Specification ......................................................................................................... 27
5.1
Hardware Specification ....................................................................................... 27
5.2
LED Indicator ...................................................................................................... 28
5.3
External Contact Interface ................................................................................. 28
5.4
4-20mA Interface ................................................................................................. 28
5.5
Communications Interface.................................................................................. 28
5.6
Watchdog .............................................................................................................. 28
6.
Fault Finding ........................................................................................................ 30
Appendix A. Interfacing to a Modem .................................................................................. 32
Appendix B. Installing a RainTrak System ........................................................................ 35
Appendix C. Surge Protection .............................................................................................. 37
