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TDD10 - NLFREN - v1.0 - 11042017
EN
TOOLS
2.2 Work and dormancy status
•
When the panel works normally, if the liquid flows through or you operate the buttons, the control panel LCD shows work
status.
•
If no liquid flows through or you do not operate the buttons, one minute later the control panel will be in dormancy status,
LCD does not display.
•
If the liquid flows through or you operate the buttons again, the control panel LCD will display, the control panel will be
waken up and normal working status restored.
2.3 Calibration work status
Note: Only in the unit LTR for calibration
For automatic factory calibration, 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, 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 nonvolatile memory, even removed the battery discharge
coefficient (k) will not lose value. If the flow of calibration error is 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 IS successful, still want to re-calibration, please remove the batteries and 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.
c46.33
Fig. 2
User manual calibration by following these steps:
• To press DISPLAY and CALIBRATE 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 displays information in figure 2.
•
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 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 k value:
l x k
0
L
0
Note:
I
= flow rate of flow meter
k
0
= current flow (not to amend before) k value
L
0
= 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
L
0
= 100 LTR, current k value ( not to amend before )
k
0
= 40, calculated as follows:
95.56 x 40
100
= 38.224
As it only keeps the 2 numerical after two decimal, k
=38.22.
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