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APPENDIX A. SPECIFICATIONS
A.1 Measurement Capability
•
Vibrating Wire (all types).
•
External temperature (thermistor).
•
Internal temperature (thermistor).
•
Main battery voltage (3V and 12V)
•
RTC lithium battery voltage.
A.2 Power
Power supply:
Internal 3 VDC (7.5Vmax) or
External 12 VDC (15Vmax)
Processing/communication current: <100 mA
VW measurement current:
<250 mA
Quiescent current:
<600
µ
A
RTC battery type:
Panasonic CR2032 3V lithium coin cell:
20mm, 225 mAHr
RTC battery life:
>10 years
Operating temperature range:
−
30 to +50
°
C
A.3 Memory
Data memory:
320K EEPROM
Program memory:
24K EEPROM
Array storage
8000 or 16000
Data memory type: ring (oldest overwrite)
Array elements:
ID (optional)
Year
Julian day (or month,day)
Time (hhmm or hh,mm)
Seconds
Battery voltage
Datalogger temperature
Transducer reading
Transducer temperature
Array #
A.4 Clock
Features:
full calendar
Time format: 12 or 24 hour (selectable)
Date Format: mm,dd or Julian (selectable)
Accuracy:
±
2 minutes per year
