Helios Large Display Pulse Input Rate/Totalizer Instruction Manual
PD2-6300
30
Programming the Rate/Totalizer (
prog
)
It is
very important
to read the following information, before proceeding to program the meter:
•
The meter has been factory calibrated to read input frequency in Hz (pulses/sec). The calibration
equipment is certified to NIST standards.
•
Use the
K-Factor
menu to match the rate/totalizer with a flowmeter’s k-factor (pulse/unit of
measure).
•
Or use the
Scale
menu to scale the pulse input (pulse/sec) without a signal source.
•
Or use
Cal
menu to calibrate the rate/totalizer using a signal source.
The
Program
menu contains the following menus:
1. K-Factor calibration
2. Scale without a signal source
3. Calibrate with a calibrated signal source
4. Total time base & conversion factor
5. Grand total time base & conversion factor
6. Total reset mode for total & grand total
Note: The Scale, Calibrate, and K-Factor functions are exclusive of each other. The meter uses the last
function programmed. Only one of these methods can be employed at a time. The Scale and Calibrate
functions can use up to 32 points (default is 2). The number of points should be set in the
Advanced
Features
menu under the
menu selection prior to scaling and calibration of
the meter, see page 51 for details.
The pulse inputs may be calibrated or scaled to any display value within the range of the meter.
Additional parameters, not needed for most applications, are programmed in the
Advanced
Features
menu; see Advanced Features Menu, page 47.
K-Factor Calibration (
Factor
)
The meter may be calibrated using the
K-Factor
function. Most flowmeter manufacturers provide this
information with the device. Enter the
K-Factor
(
Factor
) menu and select the decimal point with highest
resolution possible and program the k-factor value (
i.e.
pulses/gal). The meter will automatically calculate
the flow rate using the k-factor and the time base selected.
Multi-Point Calibration & Scaling
The meter is set up at the factory for 2-point linear calibration. The number of points for multi-point
calibration/scaling is set up in the
Advanced
Features
menu. Up to 32 linearization points may be
selected. See page 51 for details.
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