MLT Analyzer Module Manual

90003482(2) [NGA-e (MLT-Software 3.2.X)] 07/98
NGA 2000
5 - 47
• You have to set each operator in the line above the corresponding variable. After
each calculating step you have to store the intermediate result and to delete the
memory before you will continue with the next step. Each program must end with the
command "End of program".
3) Putting in the constants:
• Press the 88 -key or the →→ -key in the line "Constants..." of the menu "Programmable
Calculator" to change to the corresponding submenu, where you can define maximum
four constants, e.g. conversion constant from ppm to mg/m
3
.
4) Determination of the units:
• Press the 88 -key or the →→ -key in the line "Units..." of the menu "Programmable
Calculator" to change to the submenu "Calculator Result Units" to determine in which
unit the calculator's result shall be displayed, e.g. ppm, mg/Nm
3
, Vol.% and so on.
• Note: This step can also be changed after the program is still running.
5) Scaling
• Via the line "Scaling..." of the menu "Programmable Calculator" you can change to a
submenu, where you can determine the minimum and maximum for each result. This
will be necessary, if you want to show the calculator's result in the single component
display. The minimum/maximum values are the limits of the bargraphs.
6) Starting the program:
• Select "Enabled" in the line "Calculator is" of the menu "Programmable Calculator".
7) Check the results:
• The results of each calculator will be displayed in the last four lines of the menu
"Programmable Calculator".
Example for the calculation with a program:
You want to calculate the whole content of NO
x
as NO
2
in mg/m
3
from the concentrations
of NO in ppm (Channel 1) and of NO
2
in ppm (Channel 2). So you have to add the single
concentrations and then to multiply with a constant:
(ppm NO + ppm NO
2
) • "conversion constant (here: 2,05 mg/ml)" = NO
x
as mg/m
3
NO
2
So you will get the following program:
Step-
No.
Code Program Description
1 -1 Add to intermediate result (At the beginning the memory is zero)
2 5 NO-Concentration from channel 1 (ppm)
3 -1 Add to IR (the concentration of channel 1)
4 10 NO
2
-Concentration from channel 2 (ppm)
5 -13 Result of the addition to memory and set IR = 0
6 1 Result 1
7 -9 Add memory to IR (= sum of NO and NO
2
in ppm)
8 1 Result 1
9 -8 Multiply IR with constant ([ppm NO + ppm NO
2
] • "conversion constant")
10 1 Result 1 (= "conversion constant" ppm to mg/m
3
, here: 2,05 mg/ml)
11 -14 Store IR to result and set IR = 0
12 1 Result 1 (= mg/m
3
NO
2
)
13 -17 End of program
5.1 Analyzer Module Setup
5.1.7 Programmable Calculator