Yokogawa Low Concentration (ppm) Zirconia Oxygen Analyzer OX400 - Manual (Page 50)

<6. Operation and Parameters>
6-13
IM 11M10B01-01E
Table 6.3 Error Factor and Output Character List
Output characters Error factor
0001 Err1: Sensor error
0002 Err2: Heater temperature error
0004 Err3: Temperature sensor burnout
0008 Err4: Device temperature error
0010 Err5: CPU error
0020 Err6: FAN stop
If multiple errors occur, the logical sum of output characters is output.
Example 1 : 0003; Err1 and Err2 are occurring
Example 2 : 0017; The four errors Err1, Err2, Err3, and Err5 are occurring.
MSB LSB
Err1: Sensor error
Err2: Heater temperature error
Err3: Temperature sensor error
Err4: Device temperature burnout
Err5: CPU error
Err6: FAN stop
0 1
1 1 1 1
2 3 4 5 6 7 8 9 10 11 12 13 14 15
Figure 6.16 Configuration of Error Data (0017)
4) Alarm
The alarm is displayed in the DDDD format. The output characters are displayed in hexadecimal
format, and Table 6.4 shows the error factors and output characters.
Table 6.4 Alarm Factor and Output Character List
Output Characters Alarm Factors
0001 ALM1: Heater unstable (temperature unstable)
0002 ALM2: Sensor failure
0004 ALM3: Electromotive force (EMF) error
0008 ALM4: Asymmetrical voltage error
0010 ALM5: Calibration error
0020 ALM6: Sensor resistance value error
0040 ALM7: Oxygen concentration Hi/Low limit error
0080 ALM8: Over range error
If multiple alarms occur, the logical sum of output characters is output.
Example 1: 00C0: ALM7 and ALM8 are occurring.
ALM1: Heater unstable
(temperature unstable)
ALM2: Sensor failure
ALM3: Electromotive force (EMF) error
ALM4: Asymmetrical voltage error
ALM5: Calibration error
ALM6: Sensor resistance value error
ALM7: Oxygen concentration Hi/Low limit error
ALM8: Over range error
MSB LSB
0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15
1 1
Figure 6.17 Configuration of Alarm Data (00C0)