YOKOGAWA MG8G, User Manual, Page: 57 / 63

<12. TROUBLESHOOTING>
12-4
IM 11P03A03-01E 6th Edition : Jan. 26, 2022-00
12.3 When Calibration Cannot Be Executed
• Check that the password has been entered correctly and that the ENABLE lamp is lit.
• Check that the instrument is in steady state. If the MAINT lamp blinks in MEAS mode, the
instrument is in a stabilization period and calibration cannot be executed.
• Check that the calibration gas concentrations are set properly.
12.4 In the Event of Power Failure
12.4.1 Instantaneous Power Failure
The instrument will not be affected and will continue to work if the duration of a power failure is
80 ms or shorter in the case of the instrument with a power supply of 100 to 115 V AC or if the
duration of power failure is 350 ms or shorter in the case of the instrument with a power supply of
200 to 240 V AC. Even if the duration of a power failure is the above-mentioned time or less, the
instrument may be restarted if the power failure occurs during the warm-up period because of the
amount of time that the heater is turned on.
12.4.2 When the Power Returns
If the temperature of the constant temperature chamber remains at 50 °C or higher when the
power returns from a relatively short-term (a few minutes) power failure, the instrument will
returns to MEAS mode in about 30 seconds. This applies only when the instrument was in steady
state before the power failure.