Owner's manual

5. Application domain of the CT transmitter
The microprocessor controlled CT transmitter (referred to as CT) for use with CMM, CMB and CMU sen-
sors is a programmable transmitter that processes measurement data and displays and transmits various
types of measurement results.
The CT is communication enabled and supports both the HART
®
protocol and Profibus-PA. The device
can be customized using control unit BE2. Although basic configuration settings such as transmitter cali-
bration are realized at the factory, other settings such as those for measurement data processing, analy-
sis, display and output are user definable.
User settings are protected by a user definable password.
Settings that are essential for proper operation of the transmitter in conjunction with the sensor (e.g. cali-
bration and initialization values) are accessible only to service technicians via a password that is not pro-
vided to customers.
6. CT transmitter: mode of operation and configuration
6.1 Measuring principle
The Coriolis mass flowmeter is based on the principle whereby in a rotating system a force (known as
Coriolis force) is exerted on a mass at a rotation point that is moving towards or away from this point. By
configuring the sensor in a specific fashion, this force can be used to measure mass flow directly. The CT
transmitter evaluates the sensor signal (see Section 3.2.1 Measuring principle on page 14).
CMU & CT OPERATING MANUAL
Part No 06EN003380 rev 1.6
Page 35 of 112