15
Rosemount 65Q
September 2014
www.rosemount.com
Installation
Series 65Q Temperature Sensors can be mounted on the wall of
pipes or vessels. The counterparts for the process connections
and the respective gaskets or sealing rings are generally not
supplied with the sensors, and are on the customer's
responsibility (FDA material certification, EHEDG and 3A
requirements shall be observed).
As a general rule, the sensors should be installed in a manner
which does not adversely affect their ability to be cleaned.
The immersion length may have an influence on the accuracy of
the sensors, If it is too short, an error might be generated in the
measured temperature, due to the lower temperatures of the
process medium near the walls and the heat transfer which
occurs through the sensor stem. To avoid this effect of
inaccuracy, the immersion length should be, if possible, at least
90 to 120 mm. In pipes with smaller diameter, the axis line of the
duct must be reached, and even slightly exceeded by the sensor
tip.
In hygienic applications a strict installation rule exists so as not
to leave any dead spaces along the run of process fluid.
In case of disassembling of the sensor, new gaskets equal to the
originals and specific torques must be employed for the
reassembly procedure, to assure the stated IP grade of the
connection heads.
TriClamp Flange
partially fulfills this requirement.
For
Weld-in Ball Connection
, care should be taken by the user
in the execution of the welding on the process side; e.g. suitable
weld material, welding radius > 3 mm, absence of pits, crevices
etc.)
Tapered Union with Coupling nut according to DIN 11581
(Dairy Process Connection)
process connection doesn't meet
as harsh aseptic requirements as requested for BioPharm
applications.
Alternatively, for direct insertion into non-hygienic processes,
the Series 65Q Temperature Sensor can be ordered with
optional G
1
/
2
-in.
(
1
/
2
-in. BSPF) or NPT thread mounting
.
Figure 2. Installation Drawing
h<d/2
d
