TECHNICAL DESCRIPTION
Kamstrup 162M/382M
5512-1040 GB/05.2012/Rev. C1
26
3.7
Pulse inputs/outputs
As default the meter has an S0 pulse output (described in section 3.7.5) and two available I/O (input/output)
ports in the module interface. The use of one or both I/O ports in the module area requires that the meter is
equiped with a primary module that supports the wanted functionality.
The S0 output provides 1000 pulses/kWh permanently, whereas the I/O module is configurable as to length and
number of pulses. The S0 output always follows the blinks from the LED light-emitting diode.
3.7.1
Pulse inputs in the module area
The pulse inputs in the module area (module I/O) can be configured for the following functions depending on the
meter’s configuration:
-
Tariff control, see also Table 2.
-
Pulse input from other units.
-
Alarm input for the registration of an external alarm.
The pulse input accumulates pulses in the pulse input register. If this reigister is shown in the display, it is
updated every 10 seconds. It is possible to scale the reading of the pulse input by a ”pulse division factor” in the
range from 0.100 to 1000.000 units per pulse. The maximum permissible frequency for input pulses is 25 Hz.
In connection with the pulse input register, the following units can be selected: kWh, m
3
, l,”none”.
3.7.2
Water meters
A water meter emits 1 imp/25 l. The required reading in the electricity meter’s display is m
3
without decimals.
1000 l = 1 m
3
, 1000 / 25 = 40
Pulse division factor to be set to 40.
The electricity meter count will be incremented by one every 40 pulses, i.e. indication in m
3
without decimals.
The most frequently used pulse values appear from Table 9.
Pulse value
l/Imp
Pulse value
Imp/m
3
Pulse division factor
Display indication in ”m
3
”
Pulse division factor
Display indication in ”l”
100 10
10
-
50 20
20
-
25 40
40
-
10 100
100
0.1
5.0 200
200
5
2.5 400
400
2.5
1.0 1000
1000
1
1000 1
1
1000
Table 9: Pulse values for water meters.
