Brooks MT3809G - 1-7-3 Inductive Alarms

Installation and Operation Manual
X-VA-MT3809G-MT3810G-eng
Part Number: 541B182AAG
July, 2018
Models MT3809G & MT3810G
1-7-3 Inductive Alarms
Design Features
• 1 or 2 normally open inductive limit switches
• Optional intrinsically safe power supply/amplier/relay unit
• For low or high limit signaling/switching
• Front adjustable
• Optional Relay Power Supply – recommended
Description
One or two electronic limit switches can be installed in the indicator
housing to allow signaling or switching functions on a preset ow value.
The limit switch operates as a slot initiator that is inductively actuated
by a disc mounted on the pointer shaft. Any ow value can be used for
setting the limit value by sliding the initiator along the indicator scale.
Minimum setting distance between two limit switches is approximately
40% full scale. The position of the initiator also serves to visually indicate
the signaling set value. Settings can be adjusted by removing the indicator
cover, loosening, moving and retightening of the alarm indication needle,
and replacement of the indicator front cover. Refer to Section 2-5-1.
Table 1-9 Inductive Alarms Description Table
Powersupplyvoltage 5Ͳ25Vdc:(8Vdcnominal)
ImpedanceͲApproximately1kohmwithcamabsent
ͲApproximately8kohmwithcampresent
Ambientandprocesstemperature SeeTemperatureCutͲoffTable
ElectricalConnector M20x1,5accordingtoISO(1/2"NPT,3/4”NPT(F)orcableglandoptional)
•Brass/Nickelplatedcableglandcablediameterrange8Ͳ11mm(Aluminumhousing)
•Stainlesssteelcableglandcablediameterrange7Ͳ10.5mm(SShousing)