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5.5 Sensor Installation

FUE1010 IP65 NEMA 4X

82 Operating Instructions, 12/2014, A5E03086491-AC

This completes the ReversaMatic procedure. The system’s zero accuracy will be very close

to that obtainable using the Actual Zero method, providing flow remained constant during this

procedure.

NOTICE

Preventing Flow Mis-Registration

A caution on the use of upper and lower flow limits (used to prevent flow mis-registration)

prior to using the Reversal Zero technique (ReversaMatic): If the negative flow rate that the

flow meter reads in the step during which the sensors are reversed is more negative than

the lower flow limit, the meter will re-register positive and the Reversal Zero cycle will thus

be corrupted.

Therefore, postpone the installation of upper and lower flow limits until the reversal zero

procedure is executed successfully. For pipes that combine large diameters with very high

flow velocities, it may be necessary to move the upper and lower flow limits out of the way

until the reversal zero is completed. Moreover, pipes of this size frequently have excellent

intrinsic zero performance and may not even need zeroing.

ZeroMatic (optional function)

Note

ZeroMatic is used in the Reflect Mode only. Invoking ZeroMatic clears any existing fixed zero

offset.

Use this menu cell to select the ZeroMatic option. If conditions permit the use of the Auto

Zero function then the ZeroMatic option can be used as well.

To select and enable the ZeroMatic option:

1. In the Install Sensor menu, press <Up Arrow> to scroll to the [Zero Flow Adjust] menu

cell.

2. To access the [Zero Flow Adjust] option list press <Right Arrow>.

Note

If ZeroMatic is not running, the [Actual Zero] menu item will be displayed next to the [Zero

Flow Adjust] menu cell.

3. Select the [ZeroMatic] menu cell by pressing <Up/Down Arrow> then press <ENTER>.

When the Initial Makeup of ZeroMatic is complete the screen will return to the [Install Sensor]

menu and automatically highlight [Operation Adjust], which is the next menu cell.

Siemens SITRANS FUE1010 IP65 NEMA 4X User Manual

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