Alarm Setting; Classification Of Alarms; Alarm Values - YOKOGAWA ZR22G User Manual

8.4

Alarm Setting

The analyzer enables the setting of four alarms — high-high, high, low, and low-low alarms —
depending upon the measurement conditions. In addition, You can set calibration coefficient
alarm, temperature / pressure input alarm, simple cell resistance alarm, etc. The following section
sets out the alarm operations and setting procedures.
8.4.1

Classification of Alarms

Based on NAMUR NE107, alarms can be classified into the following four types. When NE107
is set to ON in a display setup, alarms displayed on the converter are also labeled with 4 icons.
Refer to "10.4.2 NE107 mode" for the setting.
• Failure: (equivalent to Fault, no power supply to heater)
• Function Check
• Out of Specification
• Maintenance Required
In the following sections, alarms are assumed to be enabled and categorized into the four types
mentioned above.
8.4.2

Alarm values

(1) High-high and high alarm values
Outputs when "ON" is selected in setup items of the alarm "ON" and "OFF" and the measured
value is larger than the setup limit
(2) Low and low-low alarm values
Outputs when "ON" is selected for setup items of the alarm "ON" and "OFF" and the measured
value is smaller than the setup limit.
(3) Zero calibration coefficient alarm, Span calibration coefficient alarm
Outputs when calibration coefficient value (corrected value) is larger than the upper limit or
smaller than the lower limit when calibration is performed.
(4) Temperature/pressure input alarm
Outputs when "ON" is selected in setup items of the alarm "ON" and "OFF" and the input value is
larger than the setup limit.
(5) Simple cell resistance alarm
Outputs when the measured value of the simple cell resistance measurement is larger than the
preset limit. For details on alarms, See Section "12.2.2 Remedies When Alarms are Generated".
<8. Detailed Data Setting>
IM 11M12G01-02EN
8-8
1sh Edition : Mar. 25, 2021-00