Import Excel and CSV files

Load history from a historian export, data logger, HMI trend export or spreadsheet into a machine. File imports work on every plan.

File layout

One header row, one time column, then one column per signal. Every numeric column becomes a signal, keyed by its header.

Timestamp,steam_pressure,steam_flow,flue_o2,stack_temp
2026-10-20 00:00:00,112.1,2.08,3.3,409
2026-10-20 00:01:00,111.8,2.11,3.2,410
2026-10-20 00:02:00,112.6,2.05,3.4,408

• CSV or Excel (.xlsx). Put the table at the top left with the header in the first row.
• Times without a zone are read in the site's time zone unless you pass timezone.
• Short, plain headers make good signal keys: steam_pressure rather than Steam Pressure (psig). You can name the signal and set units afterwards.
• Up to 20 MB and 500,000 rows per file.

Upload in the app

1. Open the site

   In the app, open the site and add the machine if it is not there yet.

2. Choose Excel or CSV file

   Pick the machine, drop the file, and press Upload and import.

3. Check the result

   The import reports the rows and signals it loaded and the time range. Open the machine to see the data.

Import with the API

1. Ask for an upload URL

   POST /v1/uploads returns an uploadId, an uploadUrl valid for 15 minutes, and the headers to send with it.

   POST /v1/uploadsCopy

   curl -X POST "https://api.induqt.ai/v1/uploads" \
     -H "Authorization: Bearer $INDUQT_API_KEY" \
     -H "Content-Type: application/json" \
     -d '{ "fileName": "b101-2026-10-20.csv", "contentType": "text/csv", "size": 48213 }'

2. PUT the file

   Send the bytes to uploadUrl. It is pre-signed, so it takes no Authorization header, but it needs the returned headers.

   PUT uploadUrlCopy

   curl -X PUT "$UPLOAD_URL" \
     -H "x-ms-blob-type: BlockBlob" \
     -H "Content-Type: text/csv" \
     --data-binary @b101-2026-10-20.csv

3. Import it into the machine
   POST /v1/machines/{machineId}/importsCopy

   curl -X POST "https://api.induqt.ai/v1/machines/0b7d9a12-7c3e-4f10-a2b4-c5d6e7f8a9b0/imports" \
     -H "Authorization: Bearer $INDUQT_API_KEY" \
     -H "Content-Type: application/json" \
     -d '{
     "uploadId": "f3b0…",
     "timeColumn": "Timestamp"
   }'

   ResponseCopy

   {
     "rows": 1440,
     "signals": [
       "steam_pressure",
       "steam_flow",
       "flue_o2"
     ],
     "from": "2026-10-20T00:00:00Z",
     "to": "2026-10-20T23:59:00Z"
   }

Files already online can skip the upload: pass url instead of uploadId. See Google Sheets and Drive.

Troubleshooting