Marco Zanatta

blower to zero since 12:00 UTC

Zero concentration in both columns...checking.

Concetration went to zero in 24/08 at 14:00

P. villani mantainenece at the inlet to solve high temperature in the inlet head. Somenthing wrong happend...high temperature in the CCNC. Need to be checked tomorrow.

12:30 OPC temperature up to 50°C....removed from inlet

Instrument unable to stabilize temperature at low SS. Inlet T unawailable for the moment.

After maintaninence of yesterday, PC was not on UPS. Today current down in the morning. waiting to restart.

flow went to zero at  07:30 UTC...maybe pump dead, to be checked

Water refill. 2 full water canister up to station

P. Villani on site. The software was in full block due to the broken ambient temperature probe

• Probe is replaced.
• Turbine is checked
• Software modified to avoid block: if T and ambient are out if bound the software goes into allert, but mantain the acquisition with fake T and P. Adding modified nominal flows for each line. Obtained the source code.
• New data format version
• Lines are numbered

WAI acquisition blocked since 22 Febrary 2024.  Full software in block.

• No head heating
• No turbine heating
• No acquisition of data

Zero MAAP  in parallel with MAAP evk2

• Start time UTC-2 : 12:26
• EndTime UTC-2: 14:14

Zero check passed both columns

09:22 stop acquisition

09:40 Defogging column B...did not work. Prepare to unistall the laser assembly

12:50 Cleaning columnd B done with water and ethanol...never again. Dangerous given that the lens is not fixed whatsoever.. Potentially a good idea to buy a second lens.

13:05 Connected to total inlet. First stage monitor of cloumn B at 0.04!

13:17  Column A and B Test at ss1. both columns counting half of CPC.

13:28 Column A and B Test at ss1 on filter 10 min. A: 1-3 cm-3 B=0 cm-3

Problem with the T1 sonde, impossible to be calibrated, always rises to 63°C

Problem noted on 13/03/2024 and peristing

Intrument sampling the lab air since the last maintenance on 20/02/2024

Data to be discrded since then till today