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24 ST 3000 Release 300 and SFC Model STS103 User’s Manual 6/08
3.5 Considerations for Local Smart Meter Option
Reference
specifications
Table 8 lists pertinent Smart Meter specifications for reference.
Table 8 Local Smart Meter Specifications.
Operating Conditions
—————
Parameter Rated Extreme, Transportation and
Storage
Ambient Temperature °F
°C
–40 to 176
–40 to 80
–58 to 194
–50 to 90
Relative Humidity %RH 10 to 90 0 to 100
Design
———————————
Accuracy
No error. Reproduces transmitter signal exactly within its resolution.
Display Resolution Bargraph
Digital Readout
±3% of reading
±0.005 for ±19.99 reading range,
±0.05 for ±199.9 reading range,
±0.5 for ±1999 reading range,
±5 for ±19990 reading range,
±50 for ±199900 reading range,
±500 for ±1999000 reading range,
±5000 for ±19990000 reading range.
Shown as:
19.99
199.9
1999
19.99 K
199.9 K
1999 K
19990 K
Display Update Rate
Above 32°F (0°C): ½ second
@ or below 32°F (0°C): 1½ seconds
Meter Display at High
and Low Temperature
Extremes
The rated temperature limits for the local meter are listed above and are
true in that no damage to the meter will occur over these temperatures,
however the readability of the LCD is affected if taken to these
temperature extremes:
• The LCD will turn black at some temperature between 80 to 90 °C
(176 and 194 °F), rendering the display unreadable. This effect is
only temporary, and normally occurs at 90 °C (194 °F).
• At low temperatures, the update rate of the display is lengthened to
1.5 seconds due to the slower response time of the display. At -20
°C (-4 °F) the display becomes unreadable due to slow response of
the LCD. This is also only temporary and normal readability will
return when temperature returns above -20 °C (-4 °F).