Reference Manual
00809-0100-4841, Rev. AA
May 2007
5-9
Rosemount 3490 Series
D915 Temp SoS Calc (Live measurement in °F or °C)
This is the ambient temperature measured by the HART transmitter, and is
used in the transducer’s Speed of Sound calculation.
D916 Xducer Freq (Value in kHz)
This is the operating frequency of the transmitter, which is fixed at the time of
manufacture.
D917 Threshold in Use (Value in %)
The threshold limit below which false echoes are rejected. Normally, the
Rosemount 3100 Series ultrasonic transmitter automatically sets the
threshold level for optimum performance based on echo sizes being received.
D918 Pulses in Use (Number of pulses)
Number of pulses being transmitted every second.
D919 Transmit Power (Power level)
If feature is enabled on the Rosemount 3100 Series ultrasonic transmitter, the
transmitter will be optimizing the power needed for pulse transmission. The
lower the number, the less power is being transmitted. The higher the number,
the more power is being transmitted.
History:
P003 Date of Change (Date)
View the date on which the transmitter tag or description was changed.
P046 Max Temp (Value in °C)
This is the record of a maximum temperature in excess of 50 C.
P047 Min Temp (Value in °C)
This is the record of a minimum temperature below -10 C.
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