I have a client with multiple sites along a canal that monitors VOC's. All of the communications are spread spectrum. At times, paths are blocked by large equiptment but not for long so Loggernet is expected to pick up any data not retreived. For some reason, we are missing fairly significant amounts of data in the datalogger files and so far we have no answers as to why and it's only some of the sites. For example:
15 minute data from ST-2 on 10/10
2021-10-10 12:38:00 278240 0.074 10.54 0.004 4.151 2 21.7 39 1022 12.38 69.29
2021-10-10 12:39:00 278241 0.074 10.57 0.004 3.64 2 21.7 39 1022 12.46 69.29
2021-10-10 12:40:00 278242 0.074 10.55 0.004 3.572 2 21.74 39 1022 12.63 69.29
2021-10-10 12:41:00 278243 0.074 10.55 0.004 3.769 2 21.8 39 1022 12.64 69.29
2021-10-11 02:21:00 279063 0.074 10.28 0.004 3.954 2 20.57 39 1019 12.32 67.52
2021-10-11 02:22:00 279064 0.074 10.28 0.004 4.038 2 20.59 39 1019 12.47 67.53
2021-10-11 02:23:00 279065 0.074 10.28 0.004 4.067 2 20.6 39 1019 12.49 67.56
2021-10-11 02:24:00 279066 0.074 10.28 0.005 4.386 2 20.6 39 1019 12.49 67.56
Physically going to the datalogger and attempting to retreive the data gives the same results.
Site 1 status summary shows no signs of problems.
10/24/2021 5:24:15 AM
Datalogger Information
Reported Station Name: CR800_1
OS Version: CR800.Std.32.05
OS Date: 01/06/2020
OS Signature: 29708
Panel Temperature: 11.77 °C
Memory: 4194304 bytes
Watchdog Errors: 0
Program Information
Current Program: CPU: Site Program REV D3.CR8
Start Time: 3/31/2021 3:55:26 PM
Run Signature: 14657
Program Signature: 52268
Results for Last Program Compiled: CPU: Site Program REV D3.CR8 -- Compiled in SequentialMode.
Memory Free: 46020 bytes
Program Errors
Program Errors: 0
Skipped Scans: 0
Skipped System Scans: 0
Skipped Records in Cal_VocZeroC: 0
Skipped Records in Cal_VocZeroA: 0
Skipped Records in Cal_VocSpan: 0
Skipped Records in Cal_Values: 0
Skipped Records in OneMin: 0
Skipped Records in FifteenMin: 0
Skipped Records in PM_10Error: 0
Variable Out of Bounds: 0
Battery Information
Battery Voltage: 12.65
Lithium Battery: 3.49
Number of times the datalogger's 12V supply has dropped below operating threshold: 0
Number of times voltage has dropped below 5V: 0
There are 18 identical sites in the project, but to my knowledge, not all of them have this issue.
Any things to look for would be greatly appreciated.
Thanks,
Dave Adams