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Specification subject to change without notice.
Printed in USA 141114
Polygard® is a registered trademark of MSR
AT-1110V3
PolyGard
®
CO Transmitter
User Manual - AT-1110 V3
Page 08
The two relays are activated in dependence of the gas concentration. If the gas concentration exceeds the
adjustedalarmthreshold,thecorrespondingrelayswitcheson.Ifthegasconcentrationfallsbelowthethreshold
minushysteresis,therelayswitchesoffagain.
The contact function for relay 2, NC (normally closed) or NO (normally open), can be selected via the jumper
NO/NC.Seefig1and3.Relay1isequippedwithachangeovercontact.
ViatheModBusinterfacethetwoalarmthresholdsandthehysteresisarefreelyadjustableatthePCwithinthe
measuringrange.Theprocedurecanbereadfromtheusermanual“ModBusSoftware”.
Thefollowingparametersarefactoryset.
Alarmthreshold1=Relay1: 50ppm
Alarmthreshold2=Relay2: 100ppm
Switchinghysteresis: 15ppm
Specifications subject to change without notice. | USA 141114 | Page 8 of 17
Polygard® is a registered trademark of MSR | AT-1110V3
12700 Stowe Drive, Suite 100, Poway, CA 92064 | Ph: (858) 578.7887 & (888) GO.IN
TEC
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AT-1110_V3 – UserManual
Specifications subject to change without notice. | USA 160104 | Page 8 of 17
12700 Stowe Drive, Suite 100, Poway, CA 92064 | Ph: (858) 578.7887 & (888) GO.IN
TEC
| relevantsolutions.com/inteccontrols
AT-1110 V3 – UserManual
PolyGard
®
is a registered trademark of MSR-Electronic GmbH | AT-1110V3