12
Sentinel
™
Data Loggers
Sentinel
™
Data Loggers
13
3.3 Sentinel
™
Current Logger - Model SDL-A302
ELECTRICAL
All measurements are TRMS based on 64 samples per cycle.
Range:
15 to 3000A
Display Resolution:
0.25A
Accuracy:
± (1.0% of R 1.0A) from 100 to 3000A
± (1.0% of R 1.5A) from 15 to 100A
Accuracy specifications apply in the 23°C ± 5°C (30 to 50% RH) range. Add 300 ppm/°C from -10° to
18°C and 28° to 50°C to all accuracy specifications. Conductor must be centered in the sensor. Continu-
ous magnetic field <40 A/m (Earth Magnetic Field). No external electrical or alternating magnetic field is
present. Sinusoidal current with frequency 50/60Hz ± 3Hz for > 60A and 50/60Hz for < 60A. Calibration
cycle is 1 year.
POWER
Power Source:
Four C size alkaline batteries.
Operating Time (@ 25°C):
Storage Rate < 2 Sec:
100 hrs
Storage Rate 5 Sec, 6 Sec:
15 days
Storage Rate 10 Sec, 15 Sec:
25 days
Storage Rate > 30 Sec:
45 days
An internal lithium battery (>2.8V) provides additional memory back up for
up to 30 days.
If the unit is connected to DataView
®
via PC, the operating time is 100
hours regardless of the storage rate.
RECORDING
Storage Rate:
250ms to 12 hrs
Recording Session Length:
1 minute to 8 weeks selectable from table
or user programmable from computer
Total Memory:
Record 480,000 events (Size: 1MB)
Date and Time:
MM/DD/YY, DD/MM/YY, hh:mm:ss.sss
(24hr and AM/PM)
Storage Technique:
Start/Stop, FIFO, XRM™
(Extended Recording Mode)