Product Manual

Wall Mounted Ultrasonic Flowmeter---User Manual
16
The selection could also be changed automatically by the system, if English LCD display
is used as the dis
p
la
y
device.
M40
Flow rate damper for a stable value. The damping parameter ranges form 0 to 999 seconds.
0 means there is no dam
p
in
g
. Factor
y
default is 10 seconds
M41 Low flow rate
(
or zero flow rate
)
cu
t
-off to avoid invalid accumulation.
M42
Zero calibration/Zero point setup. Make sure the liquid in the pipe is not running while
doin
g
the setu
p
.
M43 Clear the zero
p
oint value, and restore the solidified zero
p
oint value.
M44 Set u
p
a flow bias. Generall
y
this value should be 0.
M45
Flow rate scale factor. The default value is ‘1’.
Kee
p
this value as ‘1’, when no calibration has been made.
M46
Networks address identification number. Any integer can be entered except 13(0DH,
carriage return), 10 (0AH, line feeding), 42 (2AH), 38, 65535.
Every set of the instrument in a network environment should have a unique IDN. Please
refer to the cha
p
ter for communication.
M47
System locker to avoid modification of the system parameters.
If password is forgotten, you could send a command ‘LOCK0’ to the serial input to unlock.
Or
y
ou can write 0 to REGISTER49-50 under MODBUS
p
rotocol.
M48
Entry to linearity correcting data inputs. By using of this function, the non-linearity of flow
meter will be corrected. Correctin
g
data shall be obtained b
y
careful calib
r
ation.
M49
Displays the input contents for the serial port.
B
y
checkin
g
the dis
p
la
y
s,
y
ou can know if the communication is ok.
M50
Switches for the built-in data logger. There are as many as 22 different items can be
chosen. To turn this function, select ‘YES’ the system will ask for selecting the items.
There are 22 items available. Turn on all those items
y
ou want to out
p
ut
M51
Window to setup the time of scheduled output function (data logger, or Thermo-printer).
This includes start time, time interval and how many times of output. When a number great
than 8000 entered for the times of output, It means the output will be keeping always. The
minimum time interval is 1 second and the maximum is 24 hours.
M52
Data logging direction control.
(1) If ‘Send to RS485’ is selected, all the data produced by the data logger will be
transmitted out through the RS-232/RS485 interface
(2) If ‘To the internal serial BUS is selected, the data will be transmitted to the internal
serial bus which allows a thermal printer, or a 4-20mA analog output module, to be
connected to it.
M53
Display analog inputs, AI5, current value and its corresponding temperature or pressure or
li
q
uid level value.
M54 Pulse width setu
p
for the OCT
(
OCT1
)
out
p
ut. The width ran
g
e is 6--1000 mS
M55
Select analog output (4-20mA current loop, or CL) mode. Available options:
(0) 4-20mA output mode (setup the output range from 4-20mA)
(1) 0-20mA output mode (setup the output range from 4-20mA, This mode can only be
used with Version-15 flow meter)
(2) Serial port controls 0-20mA
(3) 4-20mA corresponding fluid sound speed
(4) 20-4-20mA mode
(
5
)
0-4-20mA mode
(
can onl
y
be used with Version-15 flow meter
)