Kistler-Morse KM ultrawave - Manual (Page 79)

Channel x will now display the average of the vessels in vessel 1 through 4.
C Identifies a specific channel in the equation. C must be immediately followed by a channel number (for
example, C9 indicates the channel with factory-set ID# 9). See Appendix F for errors. All equations must
start with the current channel designation and an equal sign (for example, C9= must be the start of the
equation when you are in channel 9). When a channel number appears to the right of the equal sign, it
tells the controller to put the value from that channel (the level from a vessel monitoring channel or the
calculated value from a math channel) in the equation.
+ Addition function. Adds the value to the right of the sign to the value to the left of the sign.
* Multiplication function. Multiplies the value to the right of the sign by the value to the left of the sign.
- Subtraction function. Subtracts the value to the right of the sign from the value to the left of the sign.
Division function. Divides the value to the left of the sign by the value to the right of the sign.
= Equals function. Places the value from the entire equation to the right of the sign in the channel
designated to the left of the sign. All equations must start with the current channel designation and an
equal sign (for example, C9 = must be the start of the equation when you are in channel 9).
( Left parenthesis function. Used with right parenthesis to group math functions together.
) Right parenthesis function. Used with left parenthesis to group math functions.
CLR Clear function. Clears the entire displayed formula from memory.
√ Square root function. Takes the square root of the value to the right of the sign.
ln Natural log function. Takes the natural log of the value to the right of the function.
e^ Inverse natural log. Takes the inverse natural log of the value to the right of the function.
KeyboArd functions
Up Arrow: Scrolls to the left through the equation (the controller can only display 16 characters in the
equation at a time, and the scroll function allows you to view equations that have more than 16
characters).
Down Arrow: Scrolls to the right through the equation.
[backspace]: Deletes the character to the left of the cursor.
Enter: Stores the current formula in memory.
MAth chAnnel equAtion liMitAtions
Following are the limitations on the equations put into the math channels:
• A single equation can be up to 40 characters in length. A character is a number, a decimal point, or a
function from the Math Menu. The example equation below contains 10 characters: C9=C1+10.0
• A single equation can contain a maximum of 3 constants (a constant is a numerical value, such as 1000).
• A constant can have a maximum of 11 characters.
• Equations cannot contain any spaces between characters. The example below shows an incorrect and a
correct equation:
Incorrect (contains spaces): C9 = C3 + C4 + C6
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97-1163-01 Rev. D
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