Sierra INNOVA-FLO 220 - Manual (Page 14)

Chapter 1 Introduction Series 220/221 Instruction Manual
1-8 IM-22
The meter includes a local 2 x 16 character LCD display housed within
the enclosure. Local operation and reconfiguration is accomplished using
six push buttons. For hazardous locations, the six push buttons can be
operated through the sealed enclosure using a hand-held magnet, thereby
not compromising the integrity of the hazardous location certification.
The electronics include nonvolatile memory that stores all configuration
information. The memory allows the flow meter to function immediately
upon power up, or after an interruption in power.