Communication
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10.6 GSM module
The GSM module is intended for wireless data transmission (remote readout)
in the form of SMS messages based on the GSM network
*
). In addition, a pe-
riod for automatic logon or data transmission can be configured between 6
minutes and 45 days.
The module is programmed by configuration SMS messages.
GSM
Frequency (transmission power)
900 MHz (max. 2 W), 1800 and
1900 MHz (max. 1 W)
Coverage
according to availability of GSM net-
work
Supply
3.6 V lithium battery, block of 2 AA
cells, independent of heat meter
Battery life
up to approx. 1600 SMS or 6 years
(depends on GSM signal strength at
the installation point)
Pulse input
Number of pulse inputs
2 pulse inputs
Standard for pulse inputs
Class IB per EN 1434-2
Frequency
max. 10 Hz
Pulse duration (low)
≥
50 ms
No-pulse duration (high)
≥
50 ms
Pulse value
0.01 litres/pulse, in steps of 10 000.00
litres/pulse,
in steps of 0.01 litres/pulse
Electrical isolation
yes
pulse inputs I1 and I2 with common
grounding
Output voltage
approx. 3.3 V
Internal resistance
approx. 1.5 M
Ω
Source current
approx. 2 µA
Pulse input closed (low)
Switching threshold low
< 0,2 V
Resistance
< 50 k
Ω
Pulse input open (high)
Switching threshold high
unconnected collector
Resistance
≥
6 M
Ω
Connection
Strip-back length 5 mm
Connection capacity
rigid or flexible, 0.25 ... 0.75 mm²;
flexible with wire end ferrule,
0.25 ... 0.75 mm²
Permissible cable length
max. 10 m
*
) SIM card is required
