Brodie BERT-E, Инструкция по установке и эксплуатации

Страница: 55 / 94

Scaling & Calibration (
SCALCAL
)
It is
very important
to read the following information, before proceeding to program the meter:
There is
no need to recalibrate
the meter for frequency in Hz when first received from the factory.
The meter is
factory calibrated
for Hz prior to shipment. The calibration equipment is certified to NIST
standards.
!
IMPORTANT
Performing a scaling or calibration operation will override
any k-factor programming.
Similarly, completing the k-factor
menu will override any scaling or calibration performed on the
meter. Verify the method of programming required, use the
password protection feature to secure the meter if necessary.
There are three methods of programming the display to show the correct engineering units based on
input pulses.

Use the
Factor
menu to enter a K-Factor.

Use the
Scale
menu to enter the scaling without a signal source.

Use the
Calibrate
menu to apply a signal from a calibrator or a flowmeter.
The k-factor, scale, and calibrate functions are exclusive of each other. The meter uses the last function
programmed. The
Scale and Calibrate
functions can use up to 32 points (default is 2). The number of
points should be set in
Scale and Calibrate
accordingly under the Number of Points (
nopts
) menu
selection prior to scaling and calibration of the meter, see page 54 for details.
This menu is used to scale and calibrate the meter. For information on using a k-factor for programming
the input, refer to Entering the K-Factor (
Factr
) on page 27.
Undoing K-Factor, Scale, and Calibration (
Undo?
)
Whenever the input programming is being changed from using k-factor to scaling or calibration; or from
scaling or calibration to k-factor, a confirmation menu appears. This prevents accidental changing of the
input programming.
The example below shows a meter programmed with a k-factor being reprogrammed to utilize input
scaling.
53