Sensors

Last modified: 2026-04-16

Supported sensors are divided into two main groups: analog sensors and bus sensors. Each analog sensor is identified by:

• Device name

• Sensor value (e.g. temperature, irradiance)

• Electrical value (e.g. 0…10 V / 4…20 mA)

• Example: Si-12TC (irradiation) (0…10V)

Add a bus sensor

You can search for a bus sensor or add it manually.

Prerequisites

• The device is compatible with bluelog. See Compatibility check. If the type is not supported, contact Sales.

• Your bluelog is connected to the network and the device has been physically connected.

• The basic configuration of your bluelog has been completed. See Getting started.

• All updates have been performed. See Update.

• Add-on modules, if required, are connected. See Add-on modules.

Steps

1. Navigate to Devices > Sensors > Add new sensor.

2. Using the drop-down menus, select the Manufacturer (vendor) of the device you are scanning for. 

3. Alternatively, using the drop-down menus, select the device type (Series) of the device.

4. Select an interface. The interface settings will depend on the connection type. See the table “Interface abbreviations and meanings”.

5. Adjust the interface settings. 

6. Depending on the type of sensor you select, you will need to select additional information, e.g. interface irradiance for an irradiation sensor.

7. To scan for a device, select Start scan. Select the Show details window to display the scan log.

8. The devices found appear under Bus sensors. 

Interface abbreviations and meanings

Add an analog sensor

You can connect sensors with an analog output signal (e.g. current, voltage) if the device is compatible with bluelog. Alternatively, you can configure a generic analog input.

Prerequisites

• The output signal and the type of measured value (e.g. temperature, irradiance) must be the same.

• Your bluelog is connected to the network and the meter has been physically connected.

• The basic configuration of your bluelog has been completed. See Getting started.

• All bluelog updates have been performed. See Update.

• Add-on modules, if required, are connected. See Add-on modules.

Steps

1. Navigate to Devices > Sensors > Add new sensor.

2. Select the manufacturer and series:

   • For a compatible sensor
     If the device is compatible with bluelog, select the Manufacturer and device type (Series).

   • For a generic analog input
     If no driver exists for your analog sensor, select Manufacturer-neutral as the manufacturer and an input type under Series.

3. Select an interface. The interface settings will depend on the connection type. See the table “Interface abbreviations and meanings”.

4. Select Add.

The device will appear under Installed devices. Configure the gradient and offset if necessary.

Configure gradient and offset for analog sensors

The gradient (slope) and offset vary depending on the measurement range and output signal. These parameters are normally predefined in the device driver. However, if the measurement range of a sensor differs from what was defined in the driver profile, you must manually adjust the gradient and offset.

Steps

1. Determine the gradient and offset:

   • Refer to the sensor manufacturer’s data sheet or meteocontrol’s Device connection plans.

   • If you do not know the gradient and offset values for the analog sensor, you can determine them based on other values in the manufacturer’s data sheet. The output signal of the sensor must correspond to the following range of values:

     • Voltage (0…10V)

     • Current (0…20mA)

     • 600…800 Ohm

2. Enter the relevant values from the manufacturer data sheet in the Calculate gradient and offset tool below.

   • Measurement range: W/m² or °C

   • Electrical output: mA, V

3. Navigate to Devices > Sensors > Analog sensors. 

4. Select the Pencil next to the sensor and edit the values.

5. Select Save selected.

The gradient and offset are configured.

Calculate gradient and offset for analog sensors

Interface settings

In most cases, interface settings can be found in the manufacturer documentation or the device itself.

If you do not know the bus address, activate the Use range toggle to scan the selected bus. To speed up the scanning process, select the smallest possible scan range:

• RS485: Refer to the manufacturer documentation for baud rates and frame settings.

• Ethernet: If possible, scan for either the IP address or client/slave ID, but not both.

Interface abbreviations and meanings