Emerson Rosemount 2160 Reference Manual page 62

Service and troubleshooting
May 2022
Calibration frequencies and switch points
The switching points for Sensor State transitions are determined from these read-only
frequencies:
Table 6-5: Calibration Frequencies and Switch Points
Term
Dry fork frequency
Dry to too dry
Dry to indeterminate
Wet to indeterminate
Wet to too wet
Zero
6.4.3 View counters/timers
Procedure
Select Service Tools → Maintenance → Counters/Timers.
62
Description
This is the frequency recorded when the Rosemount 2160 was
calibrated in dry conditions. Typically it is in the range 1.2 to 1.5
KHz.
Above this upper limit, a measured frequency is considered to be
a fault by being outside of the normal dry fork range.
The level detector must be operating in Enhanced Mode if this
fault is to be indicated in the Sensor Status variable.
Above this upper limit, a measured frequency is not yet
considered to be a fault but is close to being outside of the
normal dry fork range.
Below this lower limit, a measured frequency is not yet
considered to be a fault but is close to being outside of the
normal wet fork range.
Below this lower limit, a measured frequency is considered to be
a fault by being outside of the normal wet fork range.
The level detector must be operating in Enhanced Mode if this
fault is to be indicated in the Sensor Status variable.
Below this low limit, a measured frequency is considered to be 0
Hz and a fault.
The level detector must be operating in Enhanced Mode if this
fault is to be indicated in the Sensor Status variable.
Note
When the level detector is operating in Normal Mode, a 0 Hz
sensor frequency represents a Wet condition (and not a fault).
When operating in Enhanced Mode, a 0 Hz sensor frequency
represents a fault condition.
Reference Manual
00809-0100-4160
Reference Manual