Hach 5500sc, Operations

Page: 12 / 76

Set up the calculation
Set up variables, parameters, units and formulas for the analyzer.
1. Push menu and select CALCULATION.
2. Select an option.
Option Description
SET VARIABLE X Selects the sensor referring to the variable X.
SET PARAMETER X Selects the parameter referring to the variable X.
SET VARIABLE Y Selects the sensor referring to the variable Y.
SET PARAMETER Y Selects the parameter referring to the variable Y.
SET FORMULA Selects the calculation formula to complete. Options: None, X-Y, X+Y, X/Y, [X/Y]%, [X
+Y]/2, X*Y, [X-Y]%/X
DISPLAY FORMAT Selects the number of decimal places shown in a calculation result. Options: Auto,
XXXXX, XXXX.X, XXX.XX, XX.XXX, X.XXXX
SET UNITS Enters the unit name (maximum of 5 characters).
SET PARAMETER Enters the measurement name (maximum of 5 characters).
Configure the outputs
4–20 mA module setup
1. Push menu and select SETUP SYSTEM>SETUP OUTPUTS>4–20mA SETUP.
2. Select the OUTPUT.
3. Select an option.
Option Description
ACTIVATION The menu list items change with the selected function. Refer to 4–20 mA activation
options on page 12 for more information.
SELECT SOURCE Select the output. Options: None if the output is not configured, the analyzer name or
calculation if a calculation formula has been configured. Refer to
Set up the calculation
on page 12.
SET PARAMETER Select the measurement channel from the list.
SET FUNCTION Select a function. Further options will vary depending on which function is chosen.
LINEAR CONTROL—Signal is linearly dependent on the process value. PID CONTROL
—Signal works as a PID (Proportional, Integral, Derivative) controller. LOGARITHMIC—
Signal is represented logarithmically within the process variable range. BILINEAR—
Signal is represented as two linear segments within the process variable range.
SET TRANSFER If TRANSFER is or will be selected as the ERROR HOLD MODE, select SET
TRANSFER and enter the transfer value. Range: 3.0 to 23.0 mA (default = 4.000). Refer
to
Set the error hold mode on page 16.
SET FILTER Enter the filter value. This is a time-average filter value of 0 to 120 seconds (default = 0).
SCALE 0mA/4mA Select the scale (0–20 mA or 4–20 mA).
4–20 mA activation options
1. Push menu and select SETUP SYSTEM>SETUP OUTPUTS>4–20mA SETUP.
2. Select the applicable OUTPUT.
12 English