JR-1000/1001 Data Loggers
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Copyright © 2010 ACR Systems Inc. All Rights Reserved.
1.4
APPENDIX A JR-1000/1001 Sample Rates
JR-1000/1001 Sample Rates
1.4.1
How a Data Logger Stores Readings
The sample rate of your data logger is the frequency with which it stores readings in its
memory. A selected sample rate applies to the channel on a JR-1000/1001.
If you set your data logger's sample rate to eight seconds, it reads it's input channel and stores
the reading once every eight seconds. If you choose a sample rate longer than eight seconds,
the logger still reads it's input channel once every eight seconds, and stores an averaged
reading at the end of the sample interval you have chosen if the sampling mode is set to
Average.
For example, if you use a two-minute sample rate, the data logger takes fifteen separate
readings over each two-minute interval. At the end of each two-minute interval, the logger
calculates the average of the fifteen readings, and stores that average in its memory.
Otherwise if the sampling mode is set to Spot the logger still takes readings every 8 seconds
but only stores the reading taken at the selected interval.
1.4.2
Sample Rate Tables
The following tables list the maximum time spans over which your JR-1000/1001 will record
readings. The time spans depend on the length of the sample rate. A JR-1000/1001 has a
memory capacity of up to 244,800 readings when data compression is selected and up to
32,640 readings when data compression not selected.
In each table, the
Sample Rate
column lists the available sample rates. The
Days, Hours,
Minutes
and
Seconds
columns list the time spans over which your logger will record readings
at each sample rate.
For example, a JR-1000/1001 using a sample rate of ten minutes and without compression will
store readings for 226 days and 16 hours. After that time, depending on how it was set up, the
logger will either continue to take readings and replace the oldest readings with the new
readings (FIFO), or it will stop taking readings (Stop When Full).
Table B-1: JR-1000/1001 Sample Rate Table with Compression (max)
Sample Rate
Years
Days
Hours
Minutes
Seconds
8 sec.
0
22
16
0
0
16 sec.
0
45
8
0
0
Summary of Contents for JR-1000
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