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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 ows through or you operate the buttons, the control panel LCD shows work
status.
• If no liquid ows 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 ows 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 ows at the control pipeline, the ow value of the owed liquid will be displayed on
LCD screen. The liquid ows out, about 30 seconds, control panel will record the ow value, calculate the ow coefcient
(k) values and deposited CPU of the permanent preservation of nonvolatile memory, even removed the battery discharge
coefcient (k) will not lose value. If the ow 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 gure 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 tted 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 ow coefcient (k) calibration status, such as: k = 46.33, at this time
LCD displays information in gure 2.
• Numerical after “c” (such as 46.33) is the modied ow coefcient (k) value, the number of ashes that can be modied,
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 modication, press DISPLAY and CALIBRATE simultaneously, it can return to normal working status.
• User manual ow coefcient (k) calibration correction formula:
When the user found that the actual trafc owed liquid ow has a larger error with displayed ow, using the following
formula to re-calculated k value: l x k0
L0
Note:
I = ow rate of ow meter
k0 = current ow (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”, tted with batteries, button is shifted to TTL1 status.
Start the measurement of liquid ow, the owed liquid enters into the standard cylinder. Record the displayed ow value and
graduated cylinder ow value after the liquid ows out, such as displayed ow l= 95.56 LTR, graduated cylinder measures the
value L0= 100 LTR, current k value ( not to amend before ) k0= 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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