Proline t-mass I 300 HART Installation
Endress+Hauser 21
Determining dimensions C1 and C2
If only Endress+Hauser mounting bosses are used
Mounting boss 1" NPT C1 + C2 = 112 mm (4.409 in)
Mounting boss G1" C1 + C2 = 106 mm (4.173 in)
Mounting boss ¾" NPT C1 + C2 = 108 mm (4.252 in)
Mounting boss G¾" C1 + C2 = 105 mm (4.134 in)
If a cold/hot tap is used, use dimension "L" → 182 instead of "C1".
Use Applicator to determine dimensions C1 and C2 if using other E+H mounting kits
(e.g. cold/hot taps).
If not exclusively using Endress+Hauser mounting bosses
C1 Length of pipe connection used
C2 (compression fitting
with 1" NPT thread)
52 mm (2.047 in)
C2 (compression fitting
with G1" thread)
46 mm (1.811 in)
C2 (compression fitting
with ¾" NPT thread)
48 mm (1.889 in)
C2 (compression fitting
with G¾" thread)
45 mm (1.772 in)
Selecting the length of the insertion version
Select the length of the insertion version using the calculated insertion depth and the
following table. The insertion depth must be within the adjusting range of the insertion
version.
Length of insertion tube Adjusting range (insertion depth)
[mm] [in] [mm] [in]
235 9 100 to 235 3.9 to 9.3
335 13 100 to 335 3.9 to 13.2
435 17 100 to 435 3.9 to 17.1
608 24 100 to 608 3.9 to 23.9
Inlet and outlet runs
A fully developed flow profile is a requirement for optimal thermal flow measurement.
To achieve the best possible measuring performance, observe the following inlet and outlet
runs at the very minimum.
• In the case of bidirectional sensors, also observe the recommended inlet run in the
opposite direction.
• If several flow disturbances are present, use flow conditioners.
• Use flow conditioners if it is not possible to observe the required inlet runs.
• In the case of control valves, the amount of disturbance depends on the valve type and
opening degree. The recommended inlet run for control valves is 50 × DN.
• In the case of very light gases (helium, hydrogen), the recommended inlet run must be
doubled.
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