Liquid Controls SP3000 - Manual (Page 26)

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Notes:
1.
These prompts do not appear if Hardware is RTD (100 ohms). The resistance input is
referenced to a look-up table to determine the temperature.
2. This prompt appears if a liquid computation is selected (Liquid-Mass, Liquid-Volume, Heat-
Liquid, Del Heat-Liquids).
3.53
SETTING THE FLOW VARIABLES
The Flow variables determine how the input signals from channel 3 are interpreted. The flow input
sub-menu will only prompt for the required variables as determined by the Computation and
Hardware selections. Flowcharts showing complete sub-menu prompts are given for each of the
Hardware selections. Use the flowchart corresponding to the Hardware selected and observe
notes as to which variables are required for the Computation selected.
HARDWARE SELECTIONS
Input Type
Use Flow Chart
Digital Pulse-Linear 3.54 3-10
Page
Digital Pulse-Sixteen Point 3.55 3-11
Analog-Linear 3.6 3-15
Analog-Sixteen Point 3.61 3-16
3.54 FLOWCHART: DIGITAL PULSE-LINEAR
Select Setup item:
Flow input?
NOTES Pulses per unit vol.
K-Factor? Enter the K-Factor (Pulses per unit volume) from the
flowmeter calibration data sheet
1 Gas compressibility
Z Factor? Enter the Compressibility factor of the gas being
measured
2 Specific gravity
Gravity? Enter the specific gravity constant calculated at
Standard or the Base Reference Temperature for the
product being measured
3 Thermal Expansion
C(X10E-6)? Enter the thermal coefficient of expansion for the
liquid being measured
4 Mean
Spec Heat? Enter the constant value for the ability of the liquid to
retain heat.
Cutoff: 0 to 40 KHz
Input filter? Enter the highest pulse rate (frequency) at which the
unit will accept pulses. Higher pulse rates are
ignored. NOTE: Also determines the minimum pulse
width required
Flow alarm set point
Lo alarm? Enter the low compensated flowrate value at which
the flow alarm relay will activate
Flow alarm set point
Hi alarm? Enter the high compensated flowrate value at which
the flow alarm relay will activate
ENT