7532 | Mounting |
Measuring range
The usable measuring range depends on the size of the antenna, the reflectivity of the medium, the mounting location, and eventual interference reflections.
The following tables describe the groups of media as well as the achievable measuring range as a function of application and media group. If the dielectric constant of a medium is unknown, it is recommended to assume media group B to ensure a reliable measurement.
Product class | DK (εr) | Examples |
|
|
|
A | 1.4 … 1.9 | |
|
|
|
B | 1.9 … 4 | |
|
|
|
C | 4 … 10 | e.g. concentrated acids, organic solvents, esters, aniline, |
|
| alcohol, acetone, … |
|
|
|
D | > 10 | conducting liquids, e.g. aqueous solutions, dilute acids and |
|
| alkalis |
|
|
|
1)Treat Ammonia NH3 as a medium of group A, e.g. always use a stilling well.
Measuring range depending on product class for 7532 RTG:
Product class | Stilling well/ Bypass |
|
| Measuring range |
|
|
|
|
| 7532 RTG |
|
| > DN150 |
|
|
|
A | DK(εr)=1,4…1,9 | 38 m/124 ft |
|
|
|
B | DK(εr)=1,9…4 | 38 m/124 ft |
|
|
|
C | DK(εr)=4…10 | 38 m/124 ft |
|
|
|
D | DK(εr)>10 | 38 m/124 ft |
|
|
|
max. measuring | 20 m/65 ft | |
range with custody | ||
transfer approvals |
| |
15
