Precision Digital PD6830 - Manual (Page 66)

PD6830 Pulse Input Rate/Totalizer Instruction Manual
66
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 ac-
cordingly under the Number of Points (nopts) menu selection prior to scaling and
calibration of the meter, see page 67 for details.
This menu is used to scale and calibrate the meter. For information on using a k-fac-
tor for programming the input, refer to Entering the K-Factor (Factr) on page 39.
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.