Yokogawa 2-Wire Dual Channel Transmitter/Analyzer FLXA21 - Manual (Page 101)

<7. COMMISSIONING OF SC (Conductivity)>
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IM 12A01A02-01E 5th Edition : Oct. 31, 2013-00
During the Commissioning or the Quick Setup, the mA output is automatically held. The preset
value depends on a setting on the “Last or fixed”.
“Last”: The preset value is a value measured just before hold condition.
“Fixed”: The preset value is a value set in the “Fixed value mA”.
When the “Fixed” is selected, set a mA value in the “Fixed value mA”.
Selection on the “Hold during Calibration” decides to activate or deactivate the hold function
automatically during calibration.
“Enabled”: Activation of the automatic hold function
“Disabled”: No automatic hold function
7.3 Error configuration
In Error configuration, configure the statuses of various error causes.
This allows the system to notify the user of the occurrence of an error according to the status
categories in the Error configuration.
Select a status category from among Off, Warn. (Warning), and Fault.
“Fault” automatically performs burn-out. When Burn has been set to Off (7.2 Output setup), only
the error message is displayed.
“Warn.” displays an error message.
When selecting PH201G in the communication setting, make sure that the “Fail contact” setting
is appropriate.
The settable causes of errors are determined based on the settings of the Sensor setup and
Measurement setup, and a status category is set to the causes displayed in the Errors 1/3 to 3/3
screens.
Table 7.3 Error configuration
Display item Description Default
Conductivity too high
(or Concentration)
Conductivity or resistivity is lower than the minimum limit. Warn.
Conductivity too low
(or Concentration)
Conductivity or resistivity is higher than the maximum limit. Warn.
Temperature too high Measured process temperature is higher than the maximum limit. Warn.
Temperature too low Measured process temperature is lower than the minimum limit. Warn.
Polarization detec Polarization of the electrodes is detected. Off
Calibr. time exceeded Calibration time exceeds the calibration interval (see Section 7.1.5). Off
USP Conductivity exceeds the USP limit. Off
Configuration error:
1st comp. matrix
2nd comp. matrix
The temperature compensation matrix is not defined properly (see
Section 7.1.4).
Fault
Concentration table The concentration table is not defined properly (see Section 7.1.6). Fault
CAUTION
If canceling an error configuration could be risky, do not cancel it as a dangerous situation may
result.
SC
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