External Communication Interfaces
Optical interface (always included, irrespective of the order)
Ordered interface (to be specified when ordering the meter; both options can be selected):
• M-Bus interface
• RF 868 MHz interface
The interfaces are intended for data reading and meter parametering When the meter is configured for being powered only
from the internal battery, the time of communication through the additional interfaces is automatically limited to save the
battery—16 hours per month on an average Unused communication limit is summed up If the limit is used, the interface is
locked and the summing-up of a new limit will start only after the change of the hour
(80 times each hour)
For wired interfaces, a permanently connected 5 ft (1 5 m) length cable is included in the meter
The optical interface is integrated in the front panel of the electronic unit and is intended for data reading in M-Bus protocol,
meter parametering, and output of optical pulses in the
Test Mode
It is activated by pressing the button (5 minutes after the
end of communication, or is automatically disabled after pressing the button)
Pulse Outputs
Number of pulse outputs:
2 or none (to be specified when ordering)
Class:
OB in the
Operating Mode
OD
in
the
Test Mode
Type:
Open
collector
Permissible current:
Up to 20 mA
Voltage:
Up to 24 V
Pulse duration:
125 ms in the
Operating Mode
; 1 2 ms in the
Test Mode
Pulse Value in the Operating Mode
When the output is configured for energy, the value of its pulses can be selected from the list (depending on the rated flow q
p
and energy measurement units):
Permanent flow rate, q
p
, m³/h
0.6…6
10…60
Energy pulse value, when units are “kWh” or “MWh”
0 001; 0 01; 0 1; 1; 10 MWh/imp
0 01; 0 1; 1; 10 MWh/imp
Energy pulse value, when units are “GJ”
0 001; 0 01; 0 1; 1; 10 GJ/imp
0 01; 0 1; 1; 10 GJ/imp
Energy pulse value, when units are “Gcal”
0 001; 0 01; 0 1; 1; 10 Gcal/imp
0 01; 0 1; 1; 10 Gcal/imp
Table 7: Pulse value when output is configured for energy
When the output is configured for water quantity, the value of its pulses can be selected from the list (depending on the
permanent flow q
p
):
Permanent flow rate, q
p
, m³/h
0.6…6
10…60
Water volume pulse value, m³/imp
0 001; 0 01; 0 1; 1; 10
0 01, 0 1, 1; 10
Table 8: Pulse value when output is configured for water quantity
If the meter is ordered with the
Pulse Input/Output
device, then a permanently connected 5 ft (1 5 m) length cable is fitted in
the meter for connecting the inputs/outputs
Technical Specifications
Page 49
November 2020
HYB-UM-03193-EN-02
