User guide

Compact Digital Flow Monitor, Model B3000
Page 24 March 2014
Linearization Linear
Extended Function
Enhanced accuracy can be obtained by linearization of the display. The linearization function accepts a maximum of ten
points. Linearization requires additional calibration data from the meter to be used with the monitor. Typically, calibration
information can be obtained in three, five, and ten points from the flow meter’s manufacturer. If linearization is not needed,
press ► to advance to the next parameter. The maximum number of linearization points is ten.
Number of Points
At the Linear prompt, press ENTER. The Lin Pts value will be displayed. If the number of points is set to 0, linearization is
disabled. Press ENTER and the most significant digit of the number of points entry begins to flash. The first number can either
be a 1 or a 0 only. Use ▲ to change the first digit. Press ► to move to the least significant digit.
OTE:N If a number other than 0 or 1 is entered in this field the display will flash Limit indicating that an over range is entered
when ENTER is pressed.
Again, ▲ increments the value. When the number of points is input, press ENTER to move to the first linear points
frequency entry.
Data Entry
OTE:N If the number of linear points is set to 1 the B3000 assumes the user is entering the maximum frequency and
coefficient. Further, the meter assumes that the implied first point is at a frequency of 0 Hz and a coefficient of 0.
Frequency
Press ENTER and the first linear point’s frequency input Freq#1 begins to flash. Enter the frequency for the first linear point
using ▲ to increment the numerical values and ► to change the position of the number being entered. When the
frequency value input is complete, press ENTER to change to the coefficient value Coef#1 for the first linear point.
Coefficient
The coefficient is the value applied to the nominal K factor to correct it to the exact K factor for that point. The coefficient is
calculated by dividing the actual K factor for that point by the Average (nominal) K factor for the flow meter.
Linear Coecient =
Actual K Factor
Nominal K Factor
At the Coef#1 prompt, enter the coefficient that corresponds to the frequency value previously entered. Press ENTER to move
to the scaling point.
Continue entering pairs of frequency and coefficient points until all data has been entered. Press ENTER to move to the
next parameter.
OTE:N The frequency values must be entered in ascending order. If a lower frequency value is entered after a higher value
the B3000 flash Limit followed by the minimum frequency value acceptable to the display.
Example:
The following is actual data taken from a one inch turbine flow sensor calibrated with water.