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Reference Manual
00809-0100-4860, Rev BC
Appendix A: Reference Data
January 2013
Specifications and Reference Data
Failure mode alarm
HART analog
If self-diagnostics detect a gross flowmeter failure, the analog signal will be driven to the values
below:
High or low alarm signal is user-selectable through the fail mode alarm jumper on the
electronics. NAMUR-compliant alarm limits are available through the C4 or CN Option. Alarm
type is field configurable also.
Saturation output values
When the operating flow is outside the range points, the analog output continues to track the
operating flow until reaching the saturation value listed below; the output does not exceed the
listed saturation value regardless of the operating flow. The NAMUR-Compliant Saturation
Values are available through the C4 or CN option. Saturation type is field configurable.
Damping
Flow Damping adjustable between 0.2 and 255 seconds.
Process Temperature Damping adjustable between 0.4 and 32 seconds (MTA Option Only).
Response time
Three vortex shedding cycles or 300 ms, whichever is greater, maximum required to reach
63.2% of actual input with the minimum damping (0.2 seconds).
Turn-on time
HART analog
Less than four (4) seconds plus the response time to rated accuracy from power up (less than 7
seconds with the MTA Option).
Transient protection
The optional transient terminal block prevents damage to the flowmeter from transients
induced by lightning, welding, heavy electrical equipment, or switch gears. The transient
protection electronics are located in the terminal block.
The transient terminal block meets the following specifications:
IEEE C62.41 - 2002 Category B
Low 3.75
High 21.75
NAMUR Low 3.60
NAMUR High 22.6
Low 3.9
High 20.8
NAMUR Low 3.8
NAMUR High 20.5