Crucible Technologies GBR1, Installation And User Manual

Page: 7 / 12

Version 0.1
Page 7
USER MANUAL
Check that the three switches (labelled S1, S2 and S3) are all set to the “I”
position.
NOTE: Remember to pass the connecting cables through the appropriately
labelled grommet.
The pulse output of the Gas Meter should be connected to pins 2 & 3 of the
blue connector.
If the output of the Gas Meter is a relay then polarity is not important and
the two wires can be connected to either terminal.
If there is a “+” marked on the output of the Gas Meter (for example if an
opto-isolator is being used) then the positive side needs to be connected to
pin 2.
Pins 7 and 8 on the green connector are for connection to the Meter
Logger. Polarity does not matter as this is a relay output so the wires can be
connected to either terminal.
See photograph on following page with wiring connected.
Replace the GBR1 cover and connect the mains supply.