STIEBEL ELTRON SOM 9s - Manual (Page 101)

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SOM 9s
10 Accessories
10.1 Sensors and measuring instruments
Temperature sensors
The product range includes high-precision platinum tem-
perature sensors, flatscrew sensors, outdoor temperature
sensors, indoor temperature sensors, cylindrical clip-on
sensors, also as complete sensors with immersion sleeve.
Overvoltage protection device
In order to avoid overvoltage damage at collector sensors
(e.g. caused by local lightning storms), we recommend the
overvoltage protection SP10.
VBus ® / USB and VBus ® / LAn interface adapter
The new VBus ® / USB interface adapter is the interface
between the controller and a personal computer. With its
standard mini-USB port it enables a fast transmission of
system data for processing, visualising and archiving as well
as the parametrization of the controller via the VBus
® . A full
version of the ServiceCenter software is included.
VFS and RPS Grundfos Direct Sensors
The RPS Grundfos Direct Sensor is a sensor for measuring
the temperature and the pressure.
The VFS Grundfos Direct Sensor is a sensor for measuring
the temperature and the flow rate.
10.2 Interface adapters
Flowmeter V40
The V40 is a measuring instrument for detecting the flow
of water or water/glycol mixtures. After a specific volume
has passed, the V40 reed switch sends an impulse to the
calorimeter. The heat quantity used is calculated by the calo-
rimeter using these impulses and the measured temperature
difference with the help of pre-defined parameters (glycol
type, concentration, heat capacity, etc.).