Displays And Remedies When Alarms Are Generated; Alarm Types - YOKOGAWA ZR22G User Manual

12.2 Displays and Remedies When Alarms are
Generated
12.2.1

Alarm Types

When an alarm is generated, the alarm indication blinks in the display to notify of the alarm.
Pressing the alarm indication displays a description of the alarm.
Alarms include those shown in Table 12.2.
Table 12.2
Alarm
number
101 Oxygen concentration high high alarm
102 Oxygen concentration high alarm
103 Oxygen concentration low alarm
104 Oxygen concentration low low alarm
105 Humidity high high alarm
106 Humidity high alarm
107 Humidity low alarm
108 Humidity low low alarm
109 Mixing ratio high high alarm
110 Mixing ratio high alarm
111 Mixing ratio low alarm
112 Mixing ratio low low alarm
113 Relative humidity high high alarm
114 Relative humidity high alarm
115 Relative humidity low alarm
116 Relative humidity low low alarm
117 Simple cell resistance alarm
118 AO1 saturation
119 AO2 saturation
120 Calibration stability alarm
201 Zero correction ratio high alarm
202 Zero correction ratio low alarm
203 Span correction ratio high alarm
204 Span correction ratio low alarm
205 Cold junction temperature high alarm
206 Cold junction temperature low alarm
207 Thermocouple voltage high alarm
208 Thermocouple voltage low alarm
209 AI current high alarm
210 AI current low alarm
211 Input temperature high alarm
212 Input temperature low alarm
213 Input pressure high alarm
214 Input pressure low alarm
Types of Alarms and Reasons for Occurrence
Alarm Type
<12. Troubleshooting>
Reasons for Occurrence
Oxygen density exceeds setup limit.
Oxygen density exceeds setup limit.
Oxygen level is lower than setup.
Oxygen level is lower than setup.
The water content is above setup limit.
The water content is above setup limit.
The water content is below setup.
The water content is below setup.
Mixing ratio exceeds setup
Mixing ratio exceeds setup
Mixing ratio is lower than setup
Mixing ratio is lower than setup
The relative humidity exceeds setup value.
The relative humidity exceeds setup value.
The relative humidity is less than setup relative humidity.
The relative humidity is less than setup relative humidity.
The simple cell resistor has exceeded setup limit.
mA output has reached the upper or lower limit
mA output has reached the upper or lower limit
Electromotive force of the cell does not stabilize after
calibration period has elapsed.
Zero point correction ratio exceeds 130%
Zero point correction rate is lower than 70%.
Span point correction ratio exceeds 18%
Span point correction rate is lower than-18%.
Temperature of the cold contact has exceeded 155°C.
Temperature of the cold contact is below-25°C.
Thermocouple electromotive force is over 42.1 mV (approx.
1020°C)
Thermocouple electromotive force is below-5 mV (approx.-
170°C)
AI-input mA is above 20.5 mA
AI-input mA is below 3.8 mA
The incoming temperature has exceeded setup threshold.
The incoming temperature is lower than setup.
The input pressure exceeds setup value.
The input pressure is lower than setup value.
IM 11M12G01-02EN
12-5
1sh Edition : Mar. 25, 2021-00