GN CX-WLTFM User manual

User manual
CX-WLTFM TURBINE FLOW METERCX-WLTFM TURBINE FLOW METER
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Shanghai Cixi instrument Co., ltd
www. gnflowmeter.com

design, Computer modules are local
shows, it is
1
I. Summary
Turbine flow meter control panel adopts Modular
full-featured and easy-to-use with Simple structure and clear interface.
For this manual, we have introductions about the way for jumper settings and the use of
buttons
Please read this manual carefully and operate the control panel accordingly.
II. Features of control panel and wiring
1.
Summary
Flow meter adopts low-power CPU core, Turbine sensor signal generated by the amplified
pulse is conveyed to the CPU in, CPU operation in accordance with the flow coefficient
value will flow to a 5 digits on LCD display, LCD reading range of 0.01 ~ 99999.
In addition to the normal work flow meter flow measurement of liquids, but also can
automatically Factory flow coefficient (k) and user manual calibration of the flow coefficient
(k) calibration
2. Functions as below
Two cumulate (which can be reset TTL1 cumulate Clear, TTL2 the total accumulation
can not clear zero), it can be shifted by the buttons
Unit selection: The selection buttons to operate the flow units: liters and gallons (U.S.).
Sensor pulse frequency range: 5Hz ~ 5000Hz
Low power consumption: Two pieces of R03(UM-4) 1.5V Common Batteries (can be used
for 2 years)
Factory automatically flow coefficient (k) calibration, the user manual flow coefficient (k)
calibration.
3．Performance and technical parameters
Power supply: Two pieces of R03(UM-4) 1.5V Common Batteries
Measurement accuracy: ±1%
Flow range: 18.9~190L/min（5~50GPM）
LCD display: shows the current flow value, calibration
and fault code code manually
when the flow calibration factor (k) value
Operating temperature range: -10 ℃~ +60 ℃
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2
4．Jumper definition and connection
Jumper J2: Choice between normal working status and automatic flow calibration
status Factory
III. Functions and operating instructions
Figure 1
Buttons’ operation, LCD display to indicate their location (see Figure 1)
1. Normal work status and operations
A. Buttons’ operation
To press “ DISPLAY “ shortly can shift current cumulativeTTL1 and total
cumulativeTTL2, When TTL1 displayed, hold down the “DISPLAY button” about 2
seconds, cumulative flowrate of TTL1 can be cleared “0”, while TTL2 can not.
To press “ CALIBRATE “ can shift the unit LTR and GAL, and the corresponding
characters will be showed on the LCD display
To press “DISPLAY” and “CALIBRATE” at the same time about 2 seconds will enter the
user manual flow coefficient (k) calibration status.
B. LCD Description:
TTL1: current flow can be cumulative in which can be cleared zero;
TTL2: current flow displayed is total cumulative in which can not be cleared zero, to
clear TTL2 flow for zero, take the batteries from the body and install again.
LTR: flow unit
GAL: flow unit (U.S. GAL)
Figure: five field characters, used to display the flow value of calibration coefficient (k)
value and the error symbols
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3
2. Work and dormancy status
When the panel works normally,
The liquid flows through or to operate the buttons, the control panel LCD shows work
status;
No liquid flows through or to operate the buttons, one minute later the control panel will
be in dormancy status, LCD does not display;
The liquid flows through or to operate the buttons, the control panel LCD will display,
the control panel will be waken up and normal working status restored.
3. Calibration work status
Note: only in the unit LTR for calibration
Factory calibration automatically, please follow these steps:
Batteries are not installed on the body, then a short circuit board jumpers J2, after the
installation of batteries, it will display 00000 , in which means it has been entered into the
calibration status, install the control panel to the shell.
When 100 liters of calibration liquid flows at the control pipeline, the flow value of the flowed
liquid will be displayed on LCD screen. The liquid flows out, about 30 seconds, control
panel will record the flow value, calculate the flow coefficient (k) values and deposited CPU
of the permanent preservation of non-volatile memory, even removed the battery discharge
coefficient (k) will not lose value. If the flow of calibration error over more than the limited
10%, the panel will consider the current calibration value is invalid, and will not record the
current calibration value, the screen will show the letters Err, and then show the figure
00000, re-entry into the auto-calibration status.
If the calibration successful, still want to re-calibration, please remove the batteries, repeat
the above steps.
Automatic calibration is completed, please remove the battery, then disconnect the circuit
board jumper J2, then the battery can be fitted into the normal working status.
User manual calibration by following these steps:
To press “DISPLAY” and “CALIBRATE” button about 2 seconds at the same time will enter
the user manual flow coefficient (k) calibration status, such as: k= 46.33, at this time LCD
display information in Figure 2.
Figure 2
C46.33
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4
Numerical after "c" ( such as 46.33 ) is the modified flow coefficient (k) value, the number of
flashes that can be modified, and modify the scope: 0 to 9, the position can be shifted by
press the “CALIBRATE” button shortly
To press “ DISPLAY” shortly can increase the numerical from 0 to 9, increase only , can not
reduce.
After modification, press “DISPLAY” and “CALIBRATE” buttons simultaneously, it can
return to normal working status.
User manual flow coefficient (k) calibration correction formula:
When the user found that the actual traffic flowed liquid flow has a larger error with
displayed flow, using the following formula to re-calculated kvalue
0
0
Lkl
k× =
Note：
：
：
：
l= flow rate of flow meter
k0= current flow（not to amend before）k value
L0＝user graduated cylinder measures the value
Users to manually modify the k value, for example:
Clear "0" TTL1 value or remove the batteries, to clear TTL1, TTL2 "0", fitted with batteries,
button is shifted to TTL1 status, start the measurement of liquid flow, the flowed liquid
enters into the standard cylinder. Record the displayed flow value and graduated cylinder
flow value after the liquid flows out, such as displayed flow l=95.56 LTR, graduated cylinder
measures the value L0＝100 LTR, current k value ( not to amend before ) k0=40, Calculated
as follows
224.38
100 4056.95 =
×
=k
As it only keeps the 2 numerical after two decimal, k＝38.22, to modify kvalue to 38.22 is
okay
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5
IV. Maintenance
The computerized electronic meters can work at least 9,000 hours (one year) as the battery
power. In most cases, the batteries are required to be replaced for one year. Prior to the
demolition of the battery on sealed meter will extend batteries life. If the meter readings are
dim or blanking, the battery should be replaced. PLS use batteries for Replacement from
your distributor or factory.
When the batteries are disconnected or damaged, circuits in batches and the total
cumulative return to zero. Factory on-site check at the time still without power at the
instrument computer.
I strongly recommend checking the batteries and electrodes cleansing routine should be
used as part of the process of maintenance. Battery electrode should be inspected once a
year. No need to remove the instrument from the pipeline system, the batteries can be
replaced .
V. Batteries replacement
Remove the four angle screws from the instrument’s control panel, take the
computerized electronic instruments ( LCD screen ) from the turbine flow
Take out the batteries
Check battery electrode, if rust, and clear it.
Install new batteries, to ensure that the batteries are installed correctly, after the
installation of the batteries, the the computer will be opened automatically, and display
the reading information.
Install the electronic instrument ( LCD screen ) on the turbine flow meter, ensure that
the O-ring is installed to right place. tighten the four screws
It is prohibited to use isopropyl alcohol to clean the external computer assembly.
VI. Assembly drawing
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6
Ⅶ
ⅦⅦ
Ⅶ.Fault resolution
FAULTS REASONS RESOLUZTIONS
Data
inaccurate
1. On-site calibration method is not
correct.
2. Factory calibration is not suitable for
liquid under measurement.
3. Instrument operation is less than the
minimum flow rate.
4. The flow meter is blocked by part of
dry liquid.
5. Sealant material wrapped around
the impeller.
6. Packed with accessories too closely.
7. Installed too close to the motor or
electronic noise environment.
1. Re-calibration on-site or scene
selection for Factory calibration.
2. Calibration on-site by Check
Chapter
3. Remove the impeller and carefully
cleaned. To ensure that the impeller
rotating freely.
4. Removed instrument ( LCD
screen ) to ensure that the impeller
rotating freely.
5. Installed correctly.
6. Installed correctly.
Readings are
degenerating
or blanking
1, Power of batteries is weak, or even
on depleted.
2, The computer failure.
1. Removed the computer and, if
necessary, check and reinstall or
replace the batteries.
2. Factory contact.
Normal flow
rate but the
instrument
does not
count, when
pressing the
DISPLAY
button, the
instrument
boots.
1, On-site calibration method is not
correct.
2, Impeller jammed or damaged.
3, Sealant material wrapped around
the impeller.
4, The computer failure.
Re-check on-site, or check by
Factory.
Removed instrument to ensure that
the impeller rotating freely.
Removed instrumentation to ensure
that the impeller rotating freely.
Contact factory
The flow rate
meter reduced
and can not
counter, when
press
“DISPLAY “,
instrument
boots.
1、The flow meter is blocked by dry
liquid.
2、Lower than minimum flow rate
Removed instrument ( LCD screen )
to ensure that the impeller rotating
freely.
Improve flow rate.
Instrument is
not allowed
the access to
the site check.
1, The computer circuit board failure.
2, Buttons failure.
Replace the computer, contact
factory
Replace the computer, contact
factory
Tel:[phone] Fax:[phone]
Shanghai Cixi instrument Co., ltd
www. gnflowmeter.com