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Chapter 4: Basic Analyzer Operation
Setting Up Analog Output
The Sievers 500 RL On-Line TOC Analyzer has three 4-20 mA outputs. Select the output range for the 4-20 mA
analog outputs by following the steps below. Instructions for wiring the 4-20mA output can be found in the
“Installation” chapter on page 51. On configurations without conductivity measurement, some options are not
available.
1. Select the I/O tab.
2. Press the 4-20mA Outputs button.
3. Press the Error/Standby Configuration button. The settings here are applied to all the analog outputs
when each condition exists.
• Press the Error button and then press a button on the right to indicate the value for an error
condition, either 1 mA , 2.5 mA , 4 mA , 20 mA , 22mA , or LAST . ( LAST = Hold the last measurement
until the next measurement.) The initial default value is 2.5 mA .
• Press the Standby button and then press a button on the right to indicate the value when the
Analyzer switches out of Analysis mode and into Standby mode, either 1 mA , 2.5 mA , 4 mA , 20 mA ,
22 mA or LAST. The initial default value is 1 mA .
• Press the Warning button and then press a button on the right to indicate the value for a warning
condition, either 1 mA , 2.5 mA , 4 mA , 20 mA , 22 mA , or LAST . The initial default value is LAST .
4. Press the Back button.
5. Press one of the Analog Out buttons, either Analog Out 1 , Analog Out 2 , or Analog Out 3 . Set the
values for the following:
• Press the Value button to set the output value that will be sent to the analog output. Press the TOC ,
TC , IC , rCond , tCond , or Temp button and then press Enter to change the value, or press Cancel to
retain the current setting without making any changes.
• Press the Min button to set the minimum value (in ppb or µS), corresponding to the minimum analog
current. Enter a number and press the Enter button to save the value, or press Cancel to retain the
current setting without making any changes.
• Press the Max button to set the maximum value (in ppb or µS), corresponding to the maximum
analog current. Enter a number and press the Enter button to save the value, or press Cancel to
retain the current setting without making any changes.
6. To adjust the values output via the 4-20 mA outputs, see “Adjusting Analog Output Values” below.
Note:
The values for
Error
,
Standby
, and
Warning
should be different.