SOMMER MRL-7, User Manual

Page: 5 / 100

Content
1 Introduction ................................................................................................................................. 7
2 Unpacking .................................................................................................................................... 8
3 Quick start .................................................................................................................................... 9
3.1 Communicate with the data logger ................................................................................................ 9
3.2 Configure the data logger ............................................................................................................... 9
3.3 Connect & test sensors ................................................................................................................... 9
4 Specifications ............................................................................................................................. 10
4.1 MRL-7 versions .............................................................................................................................. 11
5 Components & Functions ............................................................................................................ 13
5.1 Measurement options .................................................................................................................. 14
5.1.1 Analog input terminals ....................................................................................................... 14
5.1.2 Counter & frequency input terminals ................................................................................. 14
5.1.3 SDI-12 .................................................................................................................................. 15
5.1.4 RS-485 ................................................................................................................................. 15
5.1.5 GPS-receiver ....................................................................................................................... 15
5.2 Sensor power supply ..................................................................................................................... 15
5.3 Communication options ................................................................................................................ 15
5.3.1 Direct connection to a PC ................................................................................................... 15
5.3.2 Bluetooth ............................................................................................................................ 15
5.3.3 Wireless modem ................................................................................................................. 16
5.4 Data storage options ..................................................................................................................... 16
5.4.1 Internal data storage .......................................................................................................... 16
5.4.2 USB flash drive .................................................................................................................... 16
5.4.3 Remote data storage .......................................................................................................... 16
6 Operation ................................................................................................................................... 17
6.1 How to use the keyboard .............................................................................................................. 17
6.1.1 Keyboard buttons ............................................................................................................... 17
6.1.2 Display menu ...................................................................................................................... 17
6.1.3 Activating the display.......................................................................................................... 18
6.1.4 Switching off the display ..................................................................................................... 18
6.1.5 Displaying the latest measurement values ......................................................................... 18
6.1.6 Replacing and adjusting a measurement value .................................................................. 18
6.1.7 Reading and changing a setting .......................................................................................... 19
6.2 How to open the housing .............................................................................................................. 20
6.3 How to connect a sensor .............................................................................................................. 21
6.3.1 Connection pins .................................................................................................................. 21
6.3.2 Using the spring clips .......................................................................................................... 23
6.4 How to set the data logger clock .................................................................................................. 24
6.5 How to copy data to a USB flash drive .......................................................................................... 24
6.5.1 Copy data since last download ........................................................................................... 24
6.5.2 Copy all data ....................................................................................................................... 24
6.6 How to connect the power supply ................................................................................................ 25
6.6.1 Solar power ......................................................................................................................... 25
6.7 How to mount the data logger...................................................................................................... 25
6.7.1 Surge protection ................................................................................................................. 26
6.8 Maintenance ................................................................................................................................. 26