6. Mathematics

With the Math option the following Math functions are available in the Channel mode of configuration. The equation is used to produce derived variable by using measured data or computed data as variable. The result of Math can be displayed and stored. The Math expression / equation can be keyed in maximum 36 characters.

6.1 Math Expressions and an example

Expressions on recorder

Mathematics Functions

+

Addition

-

Subtraction

*

Multiplication

/

Division

SIN(x)

sin(x)

COS(x)

cos(x)

EXP(x)

ex

SQRT(x)

Square root of x

LN(x)

loge(x)

TG(x)

tan(x)

CTG(x)

1/tan(x)

ASIN(x)

Sin-1(x)

ACOS(x)

Cos-1(x)

ATG(x)

Tan-1(x)

LOG(x)

log10(x)

ABS(x)

Absolute of x

SQ(x)

x2

ROUND(x)

The closest integral number to x

HI(x,y)

The bigger value between x and y

LO(x,y)

The smaller value between x and y

INV(x)

1/x

PCT(x,Hi,Lo)

PCT % = x / Hi-Lo, x: Target Value, Hi: High Value, Lo: Low Value

x%y

Remainder of x/y

x^y

xy

Note:

To add the option of Math, Counter & Totalizer on recorder, it is necessary to order a Boot ROM with this option. Then, open the housing and replace the Boot ROM.

52

Page 52
Image 52
Omega Engineering RD8900 user manual Math Expressions and an example, Expressions on recorder Mathematics Functions