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8.2.3 Exciting Frequency
The exciting frequency can be selected from 6Hz, 12Hz and 24Hz. Since the features shown below are
apparent depending on the exciting frequency, select an appropriate exciting frequency.
Exciting frequency 6Hz 12Hz 24Hz
Zero-point stability Good
Response
Good
Fluid noise immunity
Good
However, the range of usable exciting frequency depending on the detector to be combined is shown
below.
Corresponding exciting frequency
Detector
combined
Meter size
6Hz 12Hz 24Hz
LF470 1/10",1/6”,1/4" (2.5 to 6 mm) ○ ○ ◎
LF150 26” to 120” (500 to 3000 mm) ◎
−
−
335 All sizes ◎
−
−
* Partially filled pipes type LF232*F : Useable only 6Hz
◎ Factory setting
○ Combination allowed
− Combination not allowed
Checking the exciting frequency
Proceed as follows to check or change the setting value for exciting frequency.
Switch operation Display example Description
A3: EX. FREQ.
24 Hz
Select A3: EX. FREQ. from the setting item selection menu.
The currently set exciting frequency appears.
A
3: EX. FREQ.
Returns to the menu of setting item selection.