2600T Series Pressure transmitters | OI/266/HART-EN Rev. M   5
1 Introduction
1 Introduction
1.1 Instruction manual structure
The present manual provides information on installing, operating, 
troubleshooting the 266 pressure transmitter. Every section of 
the present manual is specifically dedicated to the specific phase 
of the transmitter lifecycle starting from the  receipt of the 
transmitter and its identification, passing to the installation, to the 
electrical connections, to the configuration and to the 
troubleshooting and maintenance operations.
1.2 Models covered by this manual
The present manual can be used for all the 266 models with 
exception done for the 266Cxx and 266Jxx (multivariable 
version).
1.3 Product description
The pressure transmitters model 266 is a modular range of field 
mounted, microprocessor based electronic transmitters, using 
multiple sensor technologies. Accurate and reliable 
measurement of differential pressure, gauge and absolute 
pressure, flow and liquid level is provided, in the even most 
difficult and hazardous industrial environments. Model 266 can 
be configured to provide specific industrial output signals 
according to 4...20mA with HART digital communication.