Vemco VR60 - Logging Setup

20
For illustration purposes, assume there is a continuous logging of data, and an average is used for
the number of bytes required for time storage. With these assumptions, the time to fill the memory
has been calculated in the table below for a number of cases.
SAMPLE TIME TO FILL STORAGE MEMORY
TRANSMITTED
DATA
LOG
INTERVAL
CALCULATION TIME TO FILL
MEMORY
123 psi
123 psi
123 psi
123 psi
123 psi
5 min
60 s
10 s
1 s
0.4 s
300 × (262144-5.5) ÷ [(3/2)+3]
60 × (262144-5.5) ÷ [(3/2)+3]
10 × (262144-5.5) ÷ [(3/2)+2.2]
1 × (262144-5.5) ÷ [(3/2)+2]
0.4 × (262144-5.5) ÷ [(3/2)+2]
202 days
40.5 days
8.2 days
20.8 hours
8.3 hours
12.3 psi
12.3 psi
12.3 psi
12.3 psi
12.3 psi
5 min
60 s
10 s
1 s
0.4 s
300 × (262144-5.5) ÷ [(4/2)+3]
60 × (262144-5.5) ÷ [(4/2)+3]
10 × (262144-5.5) ÷ [(4/2)+2.2]
1 × (262144-5.5) ÷ [(4/2)+2]
0.4 × (262144-5.5) ÷ [(4/2)+2]
182 days
36.4 days
7.2 days
18.2 hours
7.3 hours
123 m 15"C
123 m 15"C
123 m 15"C
123 m 15'C
123 m 15"C
5 min
60 s
10 s
1 s
0.4 s
300 × (262144-6.5) ÷ [(5/2)+3]
60 × (262144-6.5) ÷ [(5/2)+3]
10 × (262144-6.5) ÷ [(5/2)+2.2]
1 × (262144-6.5) ÷ [(5/2)+2]
0.4 × (262144-6.5) ÷ [(5/2)+2]
165.5 days
33.1 days
6.5 days
16.2 hours
6.5 hours
NOTE: Due to the data compression within the memory storage board, the data in 256k bytes of
storage memory will take more than 1600k bytes of disk storage after downloading to a
computer (see Print Data section).
Log Setup
Before decoding and logging a data telemetry transmitter, the time and the Log Interval (see
Glossary) should be set in the Setup routine (see Setup section of Option 01). The Log Interval
prompt shown on the display is:
LOG Int. 0 S
(Y/N)
The Log Interval is intended to provide the option of saving data storage memory by reducing the
number of data entries into memory.