Elster Instromet DL230, Operating Manual

Page: 41 / 110

Assembly , Connection and Putting into Operation 41
The connections described below should only be
sealed by a calibration officer. If the DL230 is used for
operations which are not subject to calibration
regulations, the seals on the respective connections
can be omitted.
5.2.1 Connecting meters
For the purpose of measuring consumption the pulse transducers
from up to four meters can be connected to the DE1 to DE4 digital
inputs of the DL230. Alternatively, encoders can be connected to
inputs DE1 and DE2.
III. 8
Further details and special
features regarding the use of the
pulse transducer and encoder
are described in the following
sub-chapters.
The wire cross-section for the connection to the
DL230 inputs is 0.33 … 2.5 mm
2
.
5.2.1.1 Connection to a pulse transducer
1. Connect the meter's pulse transducers to the DE1 to DE4
terminals
(III. 8) of the DL230.
The polarity can be freely selected (the symbols "+" and "-" on the
terminals are used for the connection of other pulse transducers
or encoders).
2. Adjust the measurement parameters, e.g. the cp value (pulse
constant), as described in chapter 5.3.1.2.
5.2.1.2 Connection to an encoder
1. Connect the meter's encoder(s) to the DE1 and DE2 terminals
(III. 8) of the DL230.
The polarity should be taken into consideration, i.e. connect the