Fluid Components International MT91 Manual Operation - Manual (Page 6)

FLUID COMPONENTS INTL CHAPTER 3 - OPERATION
Model MT91 Multipoint Flowmeter 3 - 6 Doc. No. 003185 Rev. B
In-Depth Custom Setup Procedure
When a flowmeter leaves the factory, it is configured to the application information know at the time of order. At
installation time; however, changes to the factory settings may be necessary. There are several parameters that can
be modified to customize the system. This section describes how to customize the flowmeter.
Menu level refers to the sequence of key to press to reach a particular function from the MAIN MENU. For
example, to go to menu level 2.2.1, press HOME, 2, 2, and 1.
Each time a system parameter is changed, the display will prompt the user to save the change. For the change to
endure through power off periods or a system reset, press Y. For a temporary change, press N. When changes are
not saved, the user can restore the previous settings by cycling the input power or pressing any key for more than 10
seconds to reset the system.
In most cases, the existing value of the parameter that is changing will be displayed. If no change is required, press
ENTR, select it again, or press HOME.
Since the flowmeter has multiple inputs and outputs, some parameters are stored in groups. For example, the analog
output parameters apply to both channels one and two. The menu level to change the analog output parameters will
prompt the user to select a channel. After making changes to that channel, back out of and re-enter the menu level to
make changes to the other channels. Use either the UP key or the HOME key to back out of the menu level.
Password Protection
Before customizing the flowmeter configuration, the customer must have access to the system parameters. Two
levels of password protection affect access to these parameters.
Factory Level
The highest level of protection requires a factory password for access. This password prevents inadvertent changes
to variables associated with the system calibration, sensing point type, and other parameters that require factory
resources to properly set.
User Level
The second level of protection requires a user password for access. This password provides the customer with the
ability to limit access to parameters that affect the way the system operates.
Both levels of password protection can be enabled or disabled. When the system leaves the factory, the factory level
protection will be enabled and the user level will be left disabled. No password is required to enable a level of
protection, but the appropriate password is required to disable protection.
Note: The user password is set to “123” when the system is shipped.
Ø To edit the user password
1. Go to menu level 2.5.1 (Setup Þ Password Þ Change User PW).
2. If current user password if it is enabled, enter the current password, then press ENTR.
3. Enter desired password, then press ENTR.
Ø To enable and disable user password protection
1. Go to menu level 2.5.2 (Setup Þ Password Þ Enable PW).
2. If user password is already enabled, enter password. Select 2=Disable to disable password.
3. If user password is not enabled, select 1=Enable to enable the password.