Instruction Manual
OCM F
OCM F - Rev. 04 as of 18.02.2014
Page 27
Fig. 7-9
Connecting a NIVUS i-Serial sensor for level measurement in
Ex-Zone 1
Important Note
The Zone 1 Ex approval of i-Series sensors is guaranteed thanks to protection
encapsulation category "Ex m". These sensors hence must not be connected
to the intrinsically safe terminal clamps (Ex ia) of the transmitter.
This would cancel the protection rating of the intrinsically safe terminal clamps
(47/46) of the transmitter and thus invalidate the according Ex approval.
Fig. 7-10
Connecting an ext. 2-wire sensor (Ex) for flow level measure-
ment
If the mA signal for level measurement is provided from an external transmitter
(such as NivuMaster) connect to clamps as follows:
Fig. 7-11
Connecting an external flow level measurement via NivuMaster
Summary of Contents for osm-f
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