Liquid Controls SP3850 - Manual (Page 13)

9
SP3850 Flow Computer
3.3 Liquid Mass
Measurements:
Actual volume is measured by the flow element. Temperature is measured
by the temperature transmitter. A density transmitter can be used for
direct density measurements or a pressure transmitter may be utilized.
Calculations:
• The density and mass flow are measured directly or calculated using
the reference density and the thermal expansion coefficient of the liquid
(see "SET FLUID PROPERTIES" submenu)
Output Results:
• Display Results
Mass Flow Rate, Resettable Total, Non-Resettable Total,
Temperature, Density or Pressure
• Analog Output
Mass Rate, Total, Temperature or Density or Pressure
• Pulse Output
Mass Total (corrected or uncorrected)
• Relay Outputs
Mass Flow Rate, Total, Temperature, Pressure or Density Alarms
Applications:
Monitoring mass flow and total of any liquid. Flow alarms are provided via
relays and datalogging is available via analog (4-20mA) and serial outputs.
Liquid Mass
Liquid Mass
Illustration
Volume Flow
As calculated in section 3.1
Mass Flow
Mass Flow = volume flow * density
Calculations
Flowmeter Temp./Dens.
Transmitter
STOP
START
PRINT
5
0 –
F3
CLEAR
•
MENU
ENTER
HELP
F1
4
PRE 1
3
RATE
2
TOTAL
1
GRAND
6
SCROLL
7
PRE 2
8
F2
9