Endress+Hauser Proservo NMS5 Operating Instruction page 27

Proservo NMS5
Endress+Hauser
A
D
d
r
D
Figure 19: Mounting with asymmetric stilling well
A Front view
B Side view
L1 Length from the center of the calibration window to the upper part of the stilling well
L2 Length from the center of the calibration window to the bottom of the stilling well
L3 Length from the center of the calibration window to the bottom of the flange
D1 Diameter of upper part of stilling well
D2 Diameter of stilling well
d Diameter of displacer
p(Lx) Longitudinal wire position from the center of the flange
r Radial direction offset
• L3: length from center of the calibration window to the bottom of the flange (99 mm (3.9 in) +
flange thickness). For JIS 10K 150A RF, the dimension is 99 mm (3.9 in) and the flange thickness
is 22 mm (0.87 in).
• When using an asymmetric stilling well, take into account the lateral shift of the displacer and fol-
low the NMS5 mounting direction as shown in the figure.
• To calculate the required stilling well diameters, the formula below should be used. The following
tables contain the necessary parameters in order to calculate the dimensions of the stilling well. Be
sure to have appropriate dimensions of the stilling well according to each dimension in the table.
• The radial direction offset is required for only the 47 m (154.2 ft) wire drum. For all other drums,
the offset is 0 mm/in.
B
D
d
p (Lx)
D
5 Installation
27