Download SL9200 Flow Computer Product Manual

SL9200 Flow Computer
CORRECTED
GAS VOLUME
3.5 Corrected Gas Volume
Measurements:
A flowmeter measures the actual volume flow in a gas line. Temperature and pressure
sensors are installed to correct for gas expansion effects.
Calculations:
• Corrected Volume is calculated using the flow, temperature and pressure inputs as
well as the gas characteristics stored in the flow computer (see "FLUID DATA"
submenu). Use the "OTHER INPUT" submenu to define reference temperature and
reference pressure values for standard conditions.
Output Results:
• Display Results
Corrected Volume or Actual Volume Flow Rate, Resettable Total, Non-Resettable
Total, Temperature, Pressure, Density
• Analog Output
Corrected Volume or Actual Volume Flow Rate, Temperature, Pressure, Density
• Pulse Output
Corrected Volume or Actual Volume Total
• Relay Outputs
Corrected Volume or Actual Volume Flow Rate, Total, pressure, Temperature
Alarms
Applications:
Monitoring corrected volume flow and total of any gas. Flow alarms are provided via
relays and datalogging is available via analog (4-20mA) and serial outputs.
Corrected
Gas Volume
Illustration
TOTAL
1
RATE
2
PRE 1
3
TEMP
4
GRAND
6
SCROLL
7
PRE 2
8
DENS
9
Pressure
Transmitter
Calculations
Flowmeter
PRINT
5
TIME
0
–
CLEAR
MENU
HELP
•
ENTER
Temperature
Transmitter
Volume Flow
Pulse Input; Average K-Factor
input frequency • time scale factor
Volume Flow =
K-Factor (by desired method)
Analog Input; Linear
Volume Flow = % input • Full Scale Flow
Corrected Volume Flow
P
Corrected Volume Flow = Volume Flow •
•
Pref
15
Tref
T
•
Zref
Z