USER MANUAL
TYPE ML-2012/13
Manufacturers of low power instruments
page 3
Table of Contents
1
Product Description ............................................................................................................................... 5
1.1
Editions ......................................................................................................................................... 6
1.1.1
ML-2012 .................................................................................................................................... 6
1.1.2
ML-2013 .................................................................................................................................... 7
2
Getting started ....................................................................................................................................... 8
2.1
Vibration ........................................................................................................................................ 8
2.1.1
Do’s and Don’ts ........................................................................................................................ 8
2.2
Inserting the SIM-card .................................................................................................................. 8
2.3
Power on for the First time............................................................................................................ 9
2.4
Connect to a PC ........................................................................................................................... 9
3
Operating Basics ................................................................................................................................. 10
3.1
Configuration menu .................................................................................................................... 10
4
Reference ............................................................................................................................................ 16
4.1
Principle of Operation ................................................................................................................. 16
4.1.1
Sample interval ....................................................................................................................... 16
4.1.2
Data logging interval ............................................................................................................... 16
4.1.3
Send Interval ........................................................................................................................... 16
4.1.4
Example .................................................................................................................................. 16
4.2
SDI-12 ......................................................................................................................................... 17
4.2.1
SDI-12 Hardware .................................................................................................................... 17
4.2.2
SDI-12 Wiring ......................................................................................................................... 17
4.2.3
SDI-12 Baud Rate and Frame Format .................................................................................... 18
4.3
RS232 ......................................................................................................................................... 18
4.4
RS485 ......................................................................................................................................... 19
4.5
Analog Inputs (4..20mA) ............................................................................................................. 20
4.5.1
Loop Powered Devices ........................................................................................................... 20
4.6
Analog Differential Inputs (ML-2013 only) .................................................................................. 20
4.6.1
Differential input ports theory of operation .............................................................................. 20
4.6.2
Common mode noise rejection ............................................................................................... 20
4.6.3
Using Load Cells With the ML-2013 ....................................................................................... 20
4.6.4
Bridge of Wheatstone ............................................................................................................. 21
4.6.5
Excitation Output. ................................................................................................................... 21
4.6.6
Analog Differential input 5 ....................................................................................................... 22
4.6.7
Analog Differential input 6 ....................................................................................................... 22
4.6.8
Calibration of Differential inputs .............................................................................................. 22
4.6.9
Overall Calibration .................................................................................................................. 22
4.7
Digital inputs ............................................................................................................................... 23
4.7.1
Pull up type ............................................................................................................................. 23
4.7.2
Pull down type ........................................................................................................................ 23
4.8
Coil input ..................................................................................................................................... 23
4.9
Alarming ...................................................................................................................................... 24
4.9.1
Alarming - principal of operation ............................................................................................. 24
4.10
Firmware Upgrade ...................................................................................................................... 25
4.10.1
When to use Firmware upgrades........................................................................................ 25
4.10.2
Firmware upgrade procedure ............................................................................................. 25
4.10.3
Firmware upgrade over the air ........................................................................................... 26
4.10.4
Firmware Driver limitations ................................................................................................. 26
4.10.5
Power Switch Limitations .................................................................................................... 26
4.10.6
Modem ................................................................................................................................ 26
4.10.7
Modem Firmware Upgrade ................................................................................................. 26
4.11
SD-card ....................................................................................................................................... 27
4.11.1
Inserting an SD-card ........................................................................................................... 27
4.12
Data Format ................................................................................................................................ 27
Header: ............................................................................................................................................ 27
Parameter Code: ............................................................................................................................. 28
