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Assembly, Connection and Putting into Operation
5.2.1.1
Connection to a low frequency pulse transducer
1. Connect the pulse output of the gas meter to the "DE1" terminal ( 1 in
Fig. 10, page 38) of the EK280.
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 5.2.1.1.
5.2.1.2
Connection to an encoder
1. Connect the encoder of the gas meter to the "DE1" terminal ( 1
10, page 38) of the EK280.
The polarity should be taken into consideration, i.e. connect the "+" of
the encoder to the "DE1 +" terminal and "-" to the "DE1 -" terminal
respectively.
2. Adjust the measurement parameters, e.g. the encoder type, as
described in chapter 5.3.1.3.
5.2.1.3
Connection to a high frequency pulse transducer
The EK280 can only count the pulses of a high frequency
pulse transducer if there is an external power supply - not
when in battery mode.
In order to ensure an uninterrupted measurement of the gas volume, the
EK280 can be configured in such a way that the device automatically
switches to a low frequency pulse transducer in the event of a failure of the
external power supply; see chapter 5.2.1.4.
If you would like to use the automatic switching function of the
pulse transducer, please proceed as per chapter5.2.1.4 !
1. Connect the high frequency pulse output of the gas meter to the "DE1"
terminal ( 1 in Fig. 10, page 38) of the EK280.
The polarity should be taken into consideration, i.e. connect the "+" of
the pulse transducer with the "DE1 +" terminal and "-" with the "DE1 -"
terminal respectively.
2. Adjust the measurement parameters, e.g. the cp value (pulse constant),
as described in chapter 5.3.1.4.
39
in Fig.
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