Proservo NMS5
70
Hauser
Figure. 68:
Density Profile Measurement
7.6.2
Density Profile Measurement
Tank Profile Density Measurement
In addition to the preconditions, the following additional preconditions are required in order to assure safe and
accurate operation for the density measurement of the tank profile.
Access Code 51 is required to edit parameters.
•
NMS5 must be configured for Spot & Profile density measurement as ordered from Hauser.
Contact Hauser for the information regarding upgrading NMS5.
•
The standard tank bottom level (GVH004) is zero. If not, the formula used for calculating the interval
between profiles is GVH000 / GVH841. The displacer touches the bottom of the tank before measuring a
lower level (e.g. 884mm).
•
If Bottom Level is not 0 mm, select Manual I/F Profile at GVH840. Set GVH843 I/F Manual Level = actual
bottom level e.g. 884mm. In this case, the intervals will be calculated based on GVH000 - GVH843/
GVH841.
•
The density profile can be operated when the liquid is still in the tank. However, depending on the height
of liquid level, it may take 1 hour or more to operate the density profile.
Note!
Additional matrix parameter settings are required for remote communications via WM550 communications
protocol.
Refer to Section "13. Matrix, (Dynamic Matrix, Device Data : G2), WM550 DENS. SEL.".
Matrix
Item
Setting
G1V5H4
Safe Density
Select the desired resultant condition when density profile measurement
fails due to displacer reaching the low-limit for density profile operation
(set in G1V5H5). Selecting "ON" will result in STOP operation. Select-
ing "IGNOR" will result in "LEVEL" operation, displacer will return to liq-
uid level. Selecting "OFF" will leave the displacer at the position where
density profile measurement failed, and in "DENSITY" operation.
G1V5H5
Den Ope Level
Set the lower limit for displacer movement during density profile
operation.
Default setting = 300 mm
.
Upper Layer (Gas or Liquid)
Lower Layer
(Liquid)
A
B
7 Commissioning
