2 data format – Hach-Lange BODTRAK II: Respirometric Biochemical Oxygen Demand (BOD) User Manual

Page 17

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Operation

17

4.5.2 Data format

When a result array is downloaded to HyperTerminal, all data from the test are sent

without pause. The data flow cannot be stopped or paused.

Figure 3

shows channel number, start date, start time, and the format of the

downloaded data. BOD values in mg/L follow. Only the first data points, of a

maximum of 360 equal distance points, are shown in this example. Each line ends

with a carriage return and a line feed. The end of the data stream is shown by a

message such as “Test Run to Completion” and a dollar symbol ($).

If small negative BOD values are seen at the start of a test, refer to

Troubleshooting

on page 37

.

BOD Log for Ch 1
Status: END
Full Scale: 700 mg/L
Tst length: 7 days
Start Date: 3/3/08
Time: 13:04

Days, Reading (mg/L)

0.00, 0
0.05, 10
0.11, 12
0.16, 12
0.22, 14
0.27, 14
0.33, 12
0.38, 8
0.44, 10
0.50, 12
0.55, 12
0.61, 14
-
-
-
Test Run to Completion
$

Figure 3 Downloaded test data

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