Emerson 3107 Manuel D’Utilisation

9

December 2014

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The transmitter should be free from a situation where it is likely to 'drown'

(refer to the relevant standard for further information)

A. Transmitter bottom reference (i.e. true invert)
B. Meniscus level

The Rosemount 3108 transmitter has a factory fitted remote temperature sensor. 

The temperature sensor is enclosed in a M8 x 1.5 threaded stainless steel body, and 
can be installed in a suitable plastic conduit box and clamped in place using a suitable 
compression type cable gland.

Open weir chamber

Mount the remote temperature sensor so that it is representative of the mean air 

temperature in the chamber and is in a shaded area away from direct sunlight and 
solar radiation.

Enclosed or partially covered flume chamber

Mount the remote temperature sensor in the approach channel, in a shaded area away 

from direct sunlight and solar radiation. The temperature sensor should be positioned 
in the weir chamber or flume approach channel so the average air temperature can be 
accurately measured. The temperature sensor must be protected at all times from 
direct sunlight and any radiated heat.

In extreme high temperatures, for the best accuracy and stability of level 

measurement reading, the transmitter should be shrouded to prevent the incidence 
of direct sunlight and solar radiation. If the flow structure permits, mount the 
transmitter within the flow channel or chamber. 



For some installations, the use of a calibration device is mandatory. Emerson offers 

the Rosemount Head Verification Device (HVD) for this purpose. 
See Product Data Sheet 00813-0200-4840 for more information.