Honeywell S1 Instruction Manual page 15

 Tighten the screw terminals with a tightening torque of at least 0.8 Nm
to maximum 1 Nm.
 Ensure the correct polarity of the two-wire connection on the Namur
interface. The M-Bus and SCR/SCR+ interfaces are independent of the
polarity.
 It is possible to apply screening and to run a cable to the meter housing
or the pipe. It must be checked in advance that the grounding system
used allows grounding on both sides (ground loops and potential
difference in grounding).
Fig. 2 | Terminal assignment
 On the version with a double index, the lower 2 terminals determine the
direction of the gas flow:
Bridge attached to lower terminals (as delivered): upper index is activated:
For rotary gas meters:
Fig. 3 | Flow direction right > left
Lower terminals unassigned: lower index is activated:
For rotary gas meters:
Fig. 4 | Flow direction left > right
 An IN-Sxx pulse generator may be installed on the encoder index cover
as an option. The installation work and connection configuration are
shown in the relevant instruction manual.
73024510a © Elster GmbH | All rights reserved. Subject to modification
For top-mounted encoder S1D:
For top-mounted encoder S1D:
Honeywell
15