Batching - Omega FC-21 User Manual

FC-21 Flow Computer

Batching

Batching Illustration
Calculations
3.4 Batching
Measurements:
A flowmeter measures the actual volume in a liquid line. A temperature
sensor can also be installed to correct for liquid thermal expansion (see
3.2 Corrected Volume).
Calculations:
• For Flowmeters with Pulse Outputs, Volume flow is calculated using
the flowmeter frequency output and the user entered K-Factor.
• For Flowmeters with Analog Transmitters, Volume flow is calculated
using the measured flowmeter signal and the user entered scale settings.
• Corrected Volume is calculated using the flow and temperature inputs
as well as the thermal expansion coefficient stored in the flow computer.
Output Results:
• Display Results
Flow Rate, Batch Total, Non-Resettable Total, Temperature, Density
• Analog Output
Rate, Total, Temperature or Density
• Pulse Output
Total
• Relay Outputs
Batch Total, Rate, or Temperature Alarms
Applications:
Batching and monitoring flow and total of any liquid. Batching is
accomplished via relays and datalogging is available via analog (4-
20mA) and serial outputs.
START
STOP
Flowmeter
Volume Flow
As calculated in section 3.1
Corrected Volume Flow (Temp. Transmitter)
Corrected Vol. Flow = volume flow * (1 - Therm.Exp.Coef. *(Tf-Tref))
TOTAL RATE PRE 1 TEMP PRINT
1 2 3 4 5
GRAND SCROLL PRE 2 DENS TIME
0
6 7 8 9
Temperature Transmitter
(Optional)
10
CLEAR MENU
HELP
ENTER
•
–
Solenoid Valve
2