Monitoring and diagnostics18
SITRANS F M MAGFLO SITRANS FC MASSFLO
MASSFLO flow meters are not sensitive to fluctuations in pres-
sure, temperature, density, electrical conductivity or viscosity.
An ASIC guarantees improved reaction to discontinuities. The
devices are practically unaffected by external noise – an es-
sential requirement for raising the dynamic range.
MASS 6000 monitors both application-dependent faults and
those device settings selected by the user:
• Excessive air in the measuring tube
• Empty tube detection
• Unstable flow signal
• Zero point error
• Density of fluid and temperature limits
• Measuring range limits
The user-specific settings are compared with the actual values
to determine an optimal setting. Faults, caused by mechanical
vibrations, cavitation or pump noises can affect the measure-
ments.
Extended diagnostic functions in the MASS 6000 transmitter
by means of intrinsic sensor resonance frequency, pick-up am-
plitudes and signal-phase can identify these influences.
As NAMUR NE 107 is supported, extensive diagnostic func-
tions are available in the Maintenance Station. This enables
the maintenance personnel to adopt the necessary measures.
From this standardized information (type and frequency of
the alarms), the user can draw conclusions that indicate immi-
nent failure or predictive maintenance. This enables step to be
performed to improve the measurement quality or prevent a
loss of production.
Level measurement
Four different technologies are available for level measure-
ment: Radar, capacitance, ultrasonic and Guided Wave Radar
technology.
Level measurement with contactless radar technology:
• SITRANS LR400/LR460/LR560 with FMCW radar
(Frequency Modulated Continuous Wave)
• SITRANS LR200/LR250/LR260, pulse radar
• SITRANS Probe LR, pulse radar
(radar measuring instruments are available with PROFIBUS
PA and with HART protocol)
Level measurement with contactless ultrasonic technology:
• SITRANS Probe LU is available either with PROFIBUS PA or
HART
Level measurement with contacting capacitance measuring
technology:
• POINTEK CLS 200/300
• SITRANS LC 300/500
POINTEK CLS 200/300 is available with PROFIBUS PA
SITRANS LC 500 is available with HART
Level measurement with contacting Guided Wave Radar
technology:
•SITRANS LG 200
SITRANS LG 200 is available with HART
Most Siemens level measuring instruments offer:
• Meaningful error messages to speed up troubleshooting
• Maintenance timers built into the measuring instrument
for easy changes
• Internal electronics temperature sensor for advance war-
ning before an electronics failure occurs
• Recording of minimum and maximum values of internal
temperature and process variables for easier troubleshoo-
ting
• PROFIBUS PA Condensed Status:
- Easy filtering of alarms sent to the operator or mainte-
nance engineer (the right alarm to the right person)
- Full control of all alarms in the measuring instrument.
This lets the user turn off all alarms that do not concern
his respective application
• Enhanced EDDs (electronic device descriptions):
- Harmonized look and feel of different Siemens level
measuring instruments and even of different Siemens
measuring instruments
- Quick-start wizard for easy configuration and fewer
setup errors
- Echo profiles can be stored for faster troubleshooting
Kap2_Komponenten_en.fm Seite 18 Mittwoch, 14. September 2011 3:15 15
© Siemens AG 2011