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WARRANTY
CONFIGURATIONS
The basic 1873 device can either be used as a SINGLE UNIT or as a basis for setting up an ice detection
system with one or several channel(s) and communication with the building management system or the
tekmar Internet Server.
A single-channel SYSTEM consists of a basic device in combination with a combi sensor and a heating
circuit. It can be extended with an Internet or Modbus Gateway, so that remote control, monitor-ing
and maintenance can be carried out via the central building management system or the platform-inde-
pendent user portal of tekmar's TAV Server ("Tekmar Anlagen Verwaltung", Tekmar System Manage-
ment).
If required, the System 73 can be expanded to a MULTI CHANNEL system with up to 8 sensors and
heating circuits using the 1875 extension unit. The heating circuits can be assigned to up to four
different zones, which have a separate pre-heating and base temperature mode and individual week time
programs as well as a holiday program. The sensors of a zone can be coupled to one signalling circuit in
which one of the sensors activates all heating circuits of the channels belonging to the zone.
1875 EXTENSION UNIT
The 1875 extension unit, in conjunction with a 1873 basic unit, permits the modular design of multi-channel
systems with up to 8 ice detection chan-nels. The 1875 is operated and set via the touch graphic display of
the 1873.
The 1875 ice detection channel can be integrated into the zone management of the 1873 and can thus
participate in all control functions within a system. This also applies to alarm management and the gateway
functions with regard to the internet or to the building management system.
The functions of the ice detection channel of the 1875 are identical to those of the 1873.
SENSORS
The System 73 sensors use a measuring principle based on the thermal capacity of the sensor surface and
the water on it, possibly in the form of ice or snow. This measuring principle was developed by tekmar and
has already proven itself over many years. Only one sensor is required to measure moisture and tempera-
ture, making installation very simple and cost-effective.
System 73 offers two types of sensors:
3356 sensor is ideally suited for installation in open spaces such as roads, walkways or staircases.
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3354 sensor can be mounted, for example, in gutters and on roof surfaces thanks to its design with
axial cable connection.
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31 15 weather sensor to measure the outside temperature.
Both 3354 and 3356 sensors are characterised by a compact and robust design, which is achieved by
the casing made of high quality, corrosion resistant brass and the microbe proof, longitudinally watertight
cable.
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