Specifications
Reference Manual 
MHM-97408, Rev. 2
June 2008
CSI 9420
www.mhm.assetweb.com
Section 2 Configuration
Safety Messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 2-1
Connection to the Wired HART Interface  . . . . . . . . . . . . . page 2-2
Device Network Configuration   . . . . . . . . . . . . . . . . . . . . . page 2-5
Device Configuration Options . . . . . . . . . . . . . . . . . . . . . . page 2-5
HART Menu Tree . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 2-6
Calibration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 2-9
Alarm Levels . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 2-10
Remove Power Module   . . . . . . . . . . . . . . . . . . . . . . . . . . . page 2-14
SAFETY MESSAGES Instructions and procedures in this section may require special precautions to 
ensure the safety of the personnel performing the operations. Information that 
potentially raises safety issues is indicated by a warning symbol ( ). Please 
refer to the following safety messages before performing an operation 
preceded by this symbol.
Warnings
Sensor Connections Device configuration can be completed either on the bench or after it has 
been installed at the measurement location. Mounting instructions and sensor 
connections are discussed in Section 3, Mounting.
Failure to follow these installation guidelines could result in death or
serious injury. 
• Make sure only qualified personnel perform the installation.
Explosions could result in death or serious injury. 
• Before connecting a 375 Field Communicator in an explosive atmosphere, make 
sure the instruments are installed in accordance with intrinsically safe or 
non-incendive field wiring practices.
• Verify that the operating atmosphere of the transmitter is consistent with the 
appropriate hazardous locations certifications.
Electrical shock could cause death or serious injury. 
• Use extreme caution when making contact with the leads and terminals.
This device complies with Part 15 of the FCC Rules. Operation is subject to the following 
conditions: This device may not cause harmful interference, this device must accept any 
interference received, including interference that may cause undesired operation.
This device must be installed to ensure a minimum antenna separation distance of 20 cm 
from all persons.










