Omega RD200 - Manual (Page 105)

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16. Math Expressions and Totalization
This section outlines math expressions and totalization. For programming, read the separate instruction
manual for “Math Expressions and Totalizations (Option)”.
1 Math Expressions
(1) Measured values are computed and the results are displayed and stored into memory.
(2) Math expressions comprise basic calculations, totalization, flow rates, etc., which are depending on the
relevant model code.
(3) 18 types of math expressions are provided and they can be programmed to any channel.
Display characters Names Remarks
(1) None
No computation (Display and printing of measured
values)
(2)
 Arithmetical operation 1 +, -. x (Aax + By + Cxy + D)
(3)
 Arithmetical operation 2
÷ (Ax/y + B)
(4)
 Natural Logarithm LoG
e
X
(5)  Logarithm LoG
10
X
(6)
 Exponential e
X
(7)  Square root
Rx – Rz/Rs - Rz
Rs: Max. range, Rz: Min. range
(8)

Temperature/
humidity
Computation of measured values by the dry and wet
bulbs by using the relative humidity tables
(9)
 Maximum Maximum value at the programmed “interval period”
(10)  Minimum Minimum value at the programmed “interval period”
(11)  Average value Average value at the programmed “interval period”
(12)  Totalizing | X |
B
a
si
c c
a
lc
ulation
(13)

Data communications
input
Displayed only for the communications Interface
(option)
(14)
 Totalization Displayed only for the totalization (option)
(15)

Flow correction
computation 1
～ ～
To
tali
za
tion,
flow
rate
, et
c.
(21) 
Flow correction
computation 7
2 Totalizing
(1) Measured values and computed results are totalized and the results are displayed and printed. The reset of
the totalization is executed with the programmed interval or a contact signal for the “remote contacts”
(option).
(2) Totalization is displayed as “int”. This can be programmed to any channel.
3 Instruction manual
An instruction manual (INST. No. INE-288) for “Math expression and totalization (option)” is attached
separately.
Math expressions and totalization Remarks