Max Machinery 121 INDICATOR - Manual (Page 11)

Corrected Liquid Volume
121-000-350 © 2001 Max Machinery, Inc. Pg 11
3.2 Corrected Liquid Volume
Measurements:
A flowmeter measures the actual volume in a liquid line. A temperature sensor is installed to correct for liquid
thermal expansion.
Calculations:
• Corrected Volume is calculated using the flow and temperature inputs as well as the thermal expansion
coefficient stored in the flow computer. Use the "SET FLUID PROPERTIES" submenu to define reference
temperature and density values for standard conditions.
Output Results:
• Display Results
Flow Rate, Resettable Total, Non-Resettable Total, Temperature, Density
• Analog Output
Rate, Total, Temperature or Density
• Pulse Output
Total
• Relay Outputs
Rate , Total or Temperature Alarms
Applications:
Monitoring corrected volume flow and total of any liquid. Flow alarms are provided via relays and datalogging
is available via analog (4-20mA) and serial outputs.
Corrected
Liquid Volume
Illustration
Volume Flow
As calculated in section 3.1
Corrected Volume Flow (Temp. Transmitter)
Corrected Volume Flow = vol. flow • (1 - Therm.Exp.Coef. • (Tf-Tref)) 2
Calculations
Temp./Dens.
Transmitter