Table of contents
1. Overview of the installation steps ...................................................................................... 1
2. Logger functions and interfaces......................................................................................... 2
2.1. MRL-7 key functions and features ................................................................................... 2
2.2. Measurement and data storage concept.......................................................................... 3
2.2.1. Performing measurements.........................................................................................3
Analogue measurement example ....................................................................... 3
RS-485 measurement example.......................................................................... 3
SDI-12 measurement example........................................................................... 4
2.2.2. Storing of measurement results and storage options..................................................5
2.2.3. Conditional storage....................................................................................................5
2.3. User interfaces................................................................................................................ 6
2.3.1. Keyboard and display.................................................................................................6
2.3.2. Display menu structure ..............................................................................................6
2.3.3. Parameterisation and data transfer............................................................................7
2.4. Sensor connections and sensor power supply................................................................. 7
2.4.1. Analogue interfaces ...................................................................................................7
2.4.1. Digital interfaces ........................................................................................................8
SDI-12................................................................................................................ 8
RS-485............................................................................................................... 9
3. Hardware ............................................................................................................................ 10
3.1. How to open the housing............................................................................................... 12
3.2. Mounting the MRL-7...................................................................................................... 13
3.3. Modem.......................................................................................................................... 14
3.4. Micro SIM Card, Micro SD Card and Button Cell Battery............................................... 14
3.4.1. Insert / Exchange of Micro SIM Card........................................................................15
3.4.2. Insert / Exchange of Micro SD Card.........................................................................16
3.4.3. Exchange of button cell............................................................................................17
3.5. Pin description............................................................................................................... 18
3.6. Spring Clips................................................................................................................... 21
4. USB..................................................................................................................................... 23
4.1. Requirements for flash drive.......................................................................................... 23
4.2. Reading out data via USB ............................................................................................. 23
5. MRL-7 keyboard operation................................................................................................ 25
5.1. Description of keyboard buttons, navigating the menu................................................... 25
5.2. Activating the display..................................................................................................... 26
5.3. Deactivating the display................................................................................................. 26
5.4. Reading (current) measurement values......................................................................... 26
5.5. Adjusting measurement values...................................................................................... 26
5.6. Settings......................................................................................................................... 27
6. Parameterisation................................................................................................................ 29
6.1. Commander................................................................................................................... 29
6.2. Defining a local connection with the MRL-7................................................................... 29
6.2.1. RS-232.....................................................................................................................30
6.2.2. Bluetooth..................................................................................................................34
6.3. Commander: Establishing a connection......................................................................... 39
6.4. Defining a station........................................................................................................... 40
6.5. Establish a connection to a “Station”.............................................................................. 43
6.6. Downloading stored data............................................................................................... 43
