data is compared to the current measurement to verify the integrity of the measurement
electronics and upper part of the probe.
During the test, the transmitter will output a level corresponding to the reflector position,
which can be used to verify the integrity of the transmitter output.
High level supervision
Additionally, the reflector’s unique echo characteristics aid the transmitter to locate a
liquid surface above the reflector, thereby offering increased reliability to detect high level
conditions at a user selectable limit.
The transmitter continuously monitors the status of the reflector and abnormal conditions
generate alarms and alerts as appropriate.
Limitations for verification reflector
Application
Not to be used in fully submerged applications
Minimum dielectric constant
2.4 (for option code HL1)
2.0 (for option codes HL2 and HL3)
More information
For more information and installation requirements, refer to the High Level Supervision
.
A.2.8
Process temperature and pressure rating
gives the maximum process temperature (measured at the lower part of the
flange or threaded connection) and pressure rating for tank connections:
•
Standard (model code S)
•
HTHP - High Temperature and High Pressure (model code H)
•
HP - High Pressure (model code P)
•
C - Cryogenic temperature (model code C)
For standard tank connection, final rating may be lower depending on flange, material of
construction, and O-ring selection.
gives the temperature ranges for standard
tank seals with different O-ring materials.
Reference Manual
Specifications and reference data
00809-0100-4530
April 2019
Reference Manual
289
