7
The Display Messages
The high-performance D-Series Microscanner
™
continuously monitors its
ability to pro duce accurate temperature readings. If either the target’s
temperature or the unit’s ambient temperature exceeds the operational
limits, the beeper will sound one beep per second and the LED display will
default to a display message.
For example, the D501 is designed to display temperature only if that
temperature is within its specified measure ment range. If the target
temperature is greater than 565°F (296°C), the display will read “HI.”
The battery voltage is also monitored. A low battery is indicated by a double
beep each second. Temperatures will continue to be displayed as long as
accuracy can be assured. If the battery drops below 5.7 volts the battery is
considered “dead” and the display defaults to [----].
If a problem is discovered during the initial self-diagnostic test, the instru-
ment will display an error message (E-01), (E-02), etc. If any (E-##) error
message is displayed, the unit will not function and must be returned to the
factory for repair. (See section on Warranty for return instruction).
The following chart summarizes the fault conditions, and the
associated indications:
Condition
Display
Sound
Range
High Target
[HI]
1/sec
>565°F (296°C)
Low Target
[LO]
1/sec
<-65°F (-54°C)
High Ambient
[HI A]
1/sec
>122°F (50°C)
Low Ambient
[LO A]
1/sec
<32°F (0°C)
Low Battery
2/sec
<6.2v
Dead Battery
[----]
2/sec
<5.7v
Processing Error
[E-##]
Return Instrument to Exergen for Repair
