Chapter 1. Programming Site Data
50
DigitalFlow™ DF868 Multipurpose Ultrasonic Liquid Flowmeter Programming Manual (2-Channel)
1.7.12 Activating Security
In order to prevent unauthorized tampering with the flowmeter’s programming, the Model DF868 is equipped with a
security feature that either locks all the keys except
[PROG] (which, when pressed, requires the password)
or locks
out the following menus:
•
Program Menu
[PROG]
•
Calibration Menu
[CAL]
•
Log Menu
[LOG]
•
Clear Menu
[CLR]
When the system is locked, access to the above menus will be denied unless the correct password is entered. The
Model DF868 is shipped with a
default password
, which is given at the end of this chapter. For increased security, the
default password should be changed.
IMPORTANT:
Once the system has been locked, it can only be unlocked by entering the password, because access to
the
SECUR
submenu is restricted.
While following the programming instructions, refer to the menu map in Figure 14 on page 101
.
IMPORTANT:
It is recommended that all program parameters be recorded before changing the password. (This
information should be recorded in Appendix B, Data Records, as a matter of routine.) If the password is
lost, the site data is not retrievable and will have to be re-entered.
1.
To enter the
GLOBAL
menu, press
[F3]=GLOBL.
2.
To enter the
SECUR
submenu, press [
and
[F3]
.
3.
At the
Lock Out
prompt, press
[F1]
=
UNlck
to unlock the system and return to the initial
User Program
screen, or
press
[F2] = LOCK
to lock the system.
Note:
If the system was unlocked at the above prompt, the following steps do not appear.
4.
Enter the current
Password
(
2719
is the default password) and press
[ENT]
.
5.
At the
Edit Password
prompt, press
[F1] = NO
to leave the password unchanged and proceed to step 8 on the
next page, or press
[F2] = YES
to enter a new password.
IMPORTANT:
Since the default password is printed in this manual, a new password should be entered. If the password
is ever lost, contact the factory for assistance.
6.
Enter
the
New Password
and press
[ENT]
. Any combination of letters and numbers up to a total of 21 characters
may be used as a password.
Note:
Keep in mind that the password may have to be entered frequently from the keypad. A long and/or complex
password may soon become annoying to use.
7.
Verify
the
New Password
by entering it again and press
[ENT]
. Be sure to record the new password in a safe
place.
8.
At the
Lockout Level
prompt, press
[F1]
to lock only the
PROG, CAL, CLR
and
LOG
menus, or press
[F2]
to lock all
the keys except
[PROG].
Procedure Options
You have completed entering data in the
Global Program
. Continue as follows:
•
To continue programming the meter, refer to the menu maps in Appendix A and navigate to the desired menu.
Then, proceed to the appropriate section of this manual for instructions.
•
To leave the
Global PROGRAM
and retain the previous settings, press
[EXIT]
twice and then press
[F1] = NO at the
SAVE prompt. Any programming changes will be discarded and you will be returned to the data display.
•
To leave the
Global PROGRAM
and return to measurement mode, press
[EXIT]
twice and then press
[F2] = YES
at
the SAVE prompt. Your programming changes will be entered into the meter’s memory, and you will be
returned to the data display.
1.8 Saving Site Data