Endress+Hauser Proline t-mass 65 PROFIBUS DP, Руководство по эксплуатации

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Installation Proline t-mass 65 PROFIBUS DP
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Vertical alignment
It is important that the sensor mounting boss is welded to the pipe or duct such that the sensor is
mounted at 90 degrees to the flow direction. Any deviation from this angle in any plane may cause
flow disturbances around the measuring point that could cause errors.
!
Note!
The thermal sensor cannot differntiate between forward and reverse flow. These guidelines are only
to ensure correct installation and aligment.
3.2.9 Insertion depth for the insertion version
Sensor installation - Adjustable insertion sensor
When installing the sensor, the following three dimensions need to be taken into account to allow
the correct insertion depth to be calculated:
• A = Internal diameter of the circular pipe. For a rectangular duct; the duct height if the sensor is
to be mounted vertically or duct width if it is to be mounted horizontally
• B = Pipe wall or duct wall thickness
• C = Depth of mounting boss on the pipe or duct, including the sensor compression fitting and
cold tap (if used).
a0005118
Fig. 10: Dimensions required to calculate the sensor insertion depth
Insertion sensors fitted with an adjustable insertion probe depth
(i. e. screwed process connection)
The tube section is supplied with a graduated scale along its length (in millimetres or inches). It is
important that the sensor be installed so that the top of the compression fitting is aligned with the
value on the scale that is equal to the following calculated value:
For pipe diameter:
• = DN 80 (3"): (0.3 x A) + B + C + 2 mm (0.079 inch)
•
≥
DN 100 (4"): (0.2 x A) + B + C + 3 mm (0.12 inch)
For duct width (horizontal installation) or duct height (vertical installation):
• < DN 100 (4"): (0.3 x A) + B + C + 2 mm (0.079 inch)
•
≥
DN 100 (4"): (0.2 x A) + B + C + 3 mm (0.12 inch)
When the sensor is at the correct insertion depth the sensor must next be aligned for the correct
flow direction detection. After alignment, the compression fitting must be tightened to secure and
seal the insertion tube. Tighten the two securing screws.
A
B
C
A
B
C
230
220
210
200
190
180
9
8
7
230
220
210
200
190
180
9
8
7
230
220
210
200
190
180
9
8
7