Yokogawa Integral Oxygen Analyzer ZR202 User Manual
Page 171
IM 11M12A01-05E
12-8
F12.3E.EPS
1
2
3
4
YEL
GRN
RED
WHT
Thermocouple
Multimeter
(V)
Figure 12.6
(4) If the inspection indicates that the thermocouple is normal, the electronics may be
defective. Consult your local Yokogawa service or sales representative.
12.2.2.7 Alarm 13: Battery Low Alarm
An internal battery is used as backup for the clock. After this alarm occurs, removing
power from the instrument may cause the clock to stop but should not affect stored
parameters. The internal clock is used for blowback scheduling; if you use this then after
a battery alarm occurs (until the battery is replaced) be sure to check / correct the date
and time every time you turn on the power.
<Corrective action>
When the battery low alarm occurs, remember that the battery cannot be replaced by the
user. Contact your Yokogawa service representative.
Note
Battery life varies with environmental conditions.
* If power is applied to the instrument continuously, then the battery should not run
down, and life is typically about ten years. However the battery will be used during
the time interval between shipment from the factory and installation.
* If power is not applied to the instrument, at normal room temperatures of 20 to 258C
then battery life is typically 5 years, and outside this range but within the range -30 to
+708C then battery life is typically 1 year.