Omega Engineering Paperless Recorder RD8900 ユーザーズマニュアル

 

52

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. 
 
 

 

 

   + 

Addition 

  

 - 

Subtraction 

   * 

Multiplication 

   / 

Division 

SIN(x) sin(x) 
COS(x) cos(x) 
EXP(x) e

x

 

SQRT(x) 

Square root of x 

LN(x) log

e

(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) log

10

(x) 

ABS(x) 

Absolute of x 

SQ(x) x

2

 

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 x

y

 

 

 

 
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.