SL1188P Ultrasonic transit-time flowmeter
Revision
：
2.0.0
Page
41
of
81
Menu
4
2
Set Zero
When fluid is in the static state, the displayed value is
called
“
Zero Point
”
. When
“
Zero Point
’
is not at zero
in the Flowmeter, the difference is going to be added
into the actual flow values and measurement
differences will occur in the Flowmeter.
Set zero must be carried out after the transducers are
installed and the flow inside the pipe is in the absolute
static state (no liquid movement in the pipe). Thus, the
“
Zero Point
”
resulting from different pipe mounting
location and parameters can be eliminated. The
measuring accuracy at low flow is enhanced by doing
this and flow offset is eliminated.
Press
ENT
, wait for the processing instructions at the
bottom right corner to reach 0.
Performing Set zero with existing flow may cause the
flow to be displayed as
“
0
”
. If so, it can be recovered
via Window M43.
Set Zero [42
Press ENT to go
Menu
4
3
Reset Zero
Select
“
YES
”
; reset
“
Zero Point
”
which was set by the
user.
Reset Zero
[43
NO
Menu
4
4
Manual Zero Point
This method is not commonly used. It is only suitable
for experienced operators to set zero under conditions
when it is not preferable to use other methods. Enter
Manual Zero Point [44
0 m3/h
the value manually to add to the measured value to
obtain the actual value. For example:
Actual measured value
＝
250 m3/H
Value Deviation
＝
-10 m3/H
Flowmeter Display
＝
240 m3/H
Normally, set the value as
“
0
”
.
Menu
4
5
Scale Factor
The scale factor is used to modify the measurement
results. The user can enter a numerical value other
than
“
1
”
according to calibration results.
Scale Factor [45
1
Menu
4
7
System Lock
Lock the instrument.
Once the system is locked, any modification to the
system is prohibited, but the parameter is readable.
“
Unlock
”
using your designated password. The
password is composed of 1 to 4 numbers.
System Lock [47
**** Unlocked ****
