User manual

Application Software

Upload / Download (2638A and 1586A)

Equation

Computed channel equations.

Average Channels

Select which channels to average.

Factors (Mx + B)

Used to enter a linear equation in two ways. Either enter

the slope (M) and offset (B) or enter input range. Scale

range, slope, and offset are entered automatically when

Calculate is clicked. “X” will be replaced with the

computed channel number.

Input or Scaled Range

Use the M and B values to calculate the Input and Scaled

range or enter the Input and Scaled range and the

Software calculates the M and B values.

Use Equations with Computed Channels (2680A

and NetDAQ series)

Note

The calculations below are not available for the

2638A/1586A. Calculations for these models can

be seen in the menu by selecting a computed

channel.

Each computed channel can have an expression of 250

characters but the maximum number of characters

available in all 60 channels is limited to 6,000 characters.

See the screen below.

For example, an equation to calculate the rate of flow in

gallons per second could be used. The rate of flow could

be calculated as follows:

Since TS is in milliseconds, divide by 1000 to calculate

gallons per second. In this example, during the first pass,

C902 will not be defined and the result will not be a

number (#Inf). However, in subsequent passes, C902 will

be defined and will provide the correct result.

C101 = A fabricated measurement to force the time

calculation

C901 = (TOT-C902)/(TS/1000)

C902 = TOT