User's Manual

SITRANS F C MASS 2100 Di 3-40
Operating Instructions, 07/2010, SFIDK.PS.028.Z1.02
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6
Commissioning
Before commissioning it must be checked that:
● The device has been installed and connected in accordance with the guidelines provided
in chapter 4 "Installing / Mounting (Page 17)" and 5 "Connecting (Page 23)"
● Device installed in ha
zardous location meets the requirements described in "Installation in
hazard
ou
s location (Page 10)"
6.1 Zero point adjustment
Performing a zero point adjustment establishes the reference point of the flowmeter at zero
flow. All Coriolis sensors from Siemens are calibrated before they are sent out to customers.
However, Coriolis sensors are very sensitive, and several factors might move the zero point,
e.g. installation, pressure, temperature and even very small vibrations coming from the
process. All these factors are customer specific and cannot be simulated at the factory.
Therefore Siemens recommends carrying out a zero point adjustment before use to obtain
optimum accuracy.
In the following it is described how to zero point adjust the device. For setting application
specific parameters, please refer to the Operating Instructions of the relevant transmitter.
Before zero point adjusting
● Install shut off devices in the pipeline, optimally both up- and downstream of the sensor,
otherwise at the sensor outlet
Vertical
Horizontal