STIEBEL ELTRON SOM 10 - Manual (Page 80)

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80
18 Accessories
18.1 Sensors and measuring instruments
Temperature sensors
The product range includes high-precision platinum
temperature sensors, flatscrew sensors, outdoor tem-
perature sensors, indoor temperature sensors, cylind-
rical 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 re-
commend the overvoltage protection SP10.
SP10
Article no.: 180 110 70
VFS and RPS Grundfos Direct Sensors TM
The RPS Grundfos Direct Sensor TM is a sensor for
measuring the temperature and the pressure.
The VFS Grundfos Direct Sensor
TM is a sensor for
measuring the temperature and the flow rate.
RPS 0-10 bar
Article no.: 130 000 47
VFS 1-12 analog Article no.: 130 000 27
VFS 2-40 analog Article no.: 130 000 37
V40 flowmeter
The V40 is a measuring instrument for detecting the
flow of water or water/glycol mixtures. After a speci-
fic volume has passed, the V40 reed switch sends an
impulse to the calorimeter. The heat quantity used is
calculated by the calorimeter using these impulses and
the measured temperature difference with the help
of pre-defined parameters (glycol type, concentration,
heat capacity, etc.).
V40
Article no.: 280 011 00
AM1 Alarm module
The AM1 Alarm module is designed to signal system
failures. It is to be connected to the VBus
® of the con-
troller and issues an optical signal via the red LED if
a failure has occurred. The AM1 also has a dry con-
tact relay output, which can e. g. be connected to a
building management system (BMS). Thus, a collective
error message can be issued in the case of a system
failure. Depending on the controller and the sensors
connected, different fault conditions can be signaled,
e. g. sensor failures, excess or negative system pres-
sure as well as errors in the flow rate, such as a dry
run of the pump.
The AM1 Alarm module ensures that occurring failu-
res can be immediately recognised and repaired, even
if the system and the controller are difficult to access
or located in a remote place. Thus, the reliability and
the stable yield of the system are ensured.
AM1
Article no.: 180 008 70