Siemens SITRANS FUH1010PVDX, Operating Instructions Manual, Page: 197 / 308

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CQO:1010PVXFM-3
Section 6
6.8 USING THE 1010PVX RESET SEQUENCE
Should you encounter an operating problem that blocks access to the System Menu, or the meter oper-
ates erratically after exposure to a power transient or some other traumatic event, this might require the
use of the reset sequence in order to restore proper operation. FUH1010PVX provides two system
resets. The first uses the magnetic wand and the second method uses a PC command sent via the RS-
232 interface (providing you have access to the flow computer in this way). This section describes both
system reset methods.
The reset sequence operates on two levels. The first level deletes all the data currently in Active Memory,
but leaves Datalogger data and all stored Site Setups intact. This is the most desirable method since to
restore operation all you have to do is reload a saved Site Setup. If this fails then you have to use the
second level, which clears ALL Dynamic Memory.
Be aware that this action erases all saved Site
Setups ( including flow calibrated sites ), any logged data and any user-defined pipe and
transducer tables. This will require you to re-initialize the flow computer and transducers and repeat all
desired site settings, custom pipe tables, etc.
6.8.1 SYSTEM RESET USING THE MAGNETIC WAND
As mentioned previously, there is a power-on delay of approximately 30 seconds from the time that you
apply power to the FUH1010PVX flow computer to when the 16 x 2 Character LCD becomes active. The
reason for the delay is to give you a chance to perform the following system reset procedure.
To clear Active Memory using the Magnetic Wand:
1. Turn off power (if it is currently on) and the reapply power to the system.
2. Trigger during the power-on delay. Examine the left-hand figure below and note the mes-
sage on the LCD display:
(continued)
Detection Fault Appears if the meter cannot complete an Initial Makeup. It means that the
pipe and/or liquid conditions do not permit a receive signal that meets the
flow detection standards. The system will not be able to operate. Attempt to
improve operating conditions by reinstalling the transducers at a different
spacing offset, or even at a different location on the pipe. In addition, switch-
ing from Reflect to Direct Mount may solve the problem. However, operation
may not be possible if there is poor liquid or pipe wall sonic conductivity or
extreme liquid aeration. Also, check for a disconnected or broken transducer
cable.
NOTE: If you receive a Detection Fault message, it is strongly recommended that the Technical
Service Department be contacted for further orientation.