Proline Promass 83E/F/O Operation Manual - FMC Technologies

Proline Promass 83Commissioning#Warning!6.7 Purge and pressure monitoring connectionsThe sensor housing protects the inner electronics and mechanics and is filled with dry nitrogen.Beyond that, up to a specified measuring pressure it additionally serves as secondary containment.For a process pressure above the specified containment pressure, the housing does not serve as anadditional secondary containment. In case a danger of measuring tube failure exists due to processcharacteristics, e.g. with corrosive process fluids, we recommend the use of sensors whose housingis equipped with special pressure monitoring connections (ordering option). With the help of theseconnections, fluid collected in the housing in the event of tube failure can be drained off. Thisdiminishes the danger of mechanical overload of the housing, which could lead to a housing failureand accordingly is connected with an increased danger potential. These connections can also beused for gas purging (gas detection).The following instructions apply to handling sensors with purge or pressure monitoring connections:• Do not open the purge connections unless the containment can be filled immediately with a dryinert gas.• Use only low gauge pressure to purge. Maximum pressure 5 bar (72,5 psi).6.8 Data memory (HistoROM), F-CHIPAt , the term HistoROM refers to various types of data storage modules on whichprocess and measuring device data is stored. By plugging and unplugging such modules, deviceconfigurations can be duplicated onto other measuring devices to cite just one example.6.8.1 HistoROM/S-DAT (sensor-DAT)The S-DAT is an exchangeable data memory in which all sensor relevant parameters are stored, i.e.,diameter, serial number, calibration factor, zero point.6.8.2 HistoROM/T-DAT (transmitter-DAT)The T-DAT is an exchangeable data storage device in which all transmitter parameters and settingsare stored.Storing of specific parameter settings from the EEPROM to the T-DAT and vice versa has to becarried out by the user (= manual save function). Detailed instructions regarding this can be foundon ä 66."Caution!6.8.3 F-CHIP (Function-Chip)The F-Chip is a microprocessor chip that contains additional software packages that extend thefunctionality and application possibilities of the transmitter.In the case of a later upgrade, the F-Chip can be ordered as an accessory and can simply be pluggedon to the I/O board. After start up, the software is immediately made available to the transmitter.Accessories ä 83Plugging on to the I/O board Page 94 ff.To ensure an unambiguous assignment, the F-CHIP is coded with the transmitter serial numberonce it is plugged in. Thus, it can not be reused with other measuring devices.Issue/Rev. 0.2 (12/12) MN0M022 • Page 81