--- title: How to Delete Instrument Log Files on An Automation System description: "Instruments may be slow to respond which could be caused by a very large log file. Follow the steps to delete the log files. These steps apply to the following instruments: R837, Density Meter, and Refractometer" --- [Skip to content](https://knowledge.rudolphresearch.com/how-to-delete-instrument-log-files#main-content) English Show submenu for translations ![RRA\_Logo\_For\_email.png\]](https://knowledge.rudolphresearch.com/hs-fs/hubfs/RRA_Logo_For_email.png?height=50&name=RRA_Logo_For_email.png) Open main navigation Close main navigation - English Show submenu for translations - [Go to rudolphresearch.com](https://rudolphresearch.com/) [Go to rudolphresearch.com](https://rudolphresearch.com/) Hello. How can we help you? - There are no suggestions because the search field is empty. 1. [Ask Professor Rudy](https://knowledge.rudolphresearch.com/?hsLang=en) 2. [How To](https://knowledge.rudolphresearch.com/how-to?hsLang=en) 3. [Density Meter](https://knowledge.rudolphresearch.com/how-to?hsLang=en#density-meter) # How to Delete Instrument Log Files on An Automation System ## Instruments may be slow to respond, which could be caused by a very large log file. Follow the steps to delete the log files. These steps apply to the following instruments: R837, Density Meter, and Refractometer 1\. If working on an automation system, first close the automation software by clicking the red X on the upper right corner of the screen. 2\. Select Menu 3\. Select Operational Parameters 4\. Select Instrument Configuration (or DDM Control depending on the software version on your instrument) 5\. Select Control Panel 6\. Select Windows Control Panel 7\. Open Windows Explorer   **If a Density Meter:** 1\. On the C: drive, you will see a folder for Density 2\. Open the Density Folder 3\. Select but do not open the Log Folder 4\. While holding down the Shift key, press the Delete key to delete the Log folder.  5\. You will be asked to confirm the delete, answer yes   **If a Refractometer**: 1\. On the C:/ drive there is a Refractometer folder which you will open and also delete the Log folder. 2\. Open the Refractometer Folder 3\. Select but do not open the Log Folder 4\. While holding down the Shift key, press the Delete key to delete the Log folder.  5\. You will be asked to confirm the delete, answer yes   **If an Automation:** 1\. On the C:/drive, there is a R837 folder which you will open and also delete the Log folder. 2\. Open the R837 Folder 3\. Select but do not open the Log Folder 4\. While holding down the Shift key, press the Delete key to delete the Log folder.  5\. You will be asked to confirm the delete, answer yes   Once the log files are deleted, close out of Windows Explorer by clicking on the X on the upper right of the window and return to the instrument's main menu. - [Product Information](https://knowledge.rudolphresearch.com/product-information?hsLang=en#main-content) - [Autopol® Polarimeters](https://knowledge.rudolphresearch.com/product-information?hsLang=en#autopol-polarimeters) - [Density Meters](https://knowledge.rudolphresearch.com/product-information?hsLang=en#density-meters) - [Refractometers](https://knowledge.rudolphresearch.com/product-information?hsLang=en#refractometers) - [Troubleshooting](https://knowledge.rudolphresearch.com/troubleshooting?hsLang=en#main-content) - [Polarimeter](https://knowledge.rudolphresearch.com/troubleshooting?hsLang=en#polarimeter) - [AutoFlex](https://knowledge.rudolphresearch.com/troubleshooting?hsLang=en#autoflex) - [Density Meter](https://knowledge.rudolphresearch.com/troubleshooting?hsLang=en#density-meter) - [Refractometer](https://knowledge.rudolphresearch.com/troubleshooting?hsLang=en#refractometer) - [AlcoTest](https://knowledge.rudolphresearch.com/troubleshooting?hsLang=en#alcotest) - [Data Backup/Audit Trail/ Historical Data](https://knowledge.rudolphresearch.com/troubleshooting?hsLang=en#data-backup-audit-trail-historical-data) - [Pinter](https://knowledge.rudolphresearch.com/troubleshooting?hsLang=en#pinter) - [Troubleshooting - Boot Up Issue](https://knowledge.rudolphresearch.com/troubleshooting?hsLang=en#troubleshooting-boot-up-issue) - [How To](https://knowledge.rudolphresearch.com/how-to?hsLang=en#main-content) - [Density Meter](https://knowledge.rudolphresearch.com/how-to?hsLang=en#density-meter) - [Polarimeter](https://knowledge.rudolphresearch.com/how-to?hsLang=en#polarimeter) - [AlcoTest](https://knowledge.rudolphresearch.com/how-to?hsLang=en#alcotest) - [Automation](https://knowledge.rudolphresearch.com/how-to?hsLang=en#automation) - [Refractometer](https://knowledge.rudolphresearch.com/how-to?hsLang=en#refractometer) - [21CFR11](https://knowledge.rudolphresearch.com/how-to?hsLang=en#21cfr11) - [Minimum PC Specifications](https://knowledge.rudolphresearch.com/how-to?hsLang=en#minimum-pc-specifications) - [VeriLinkRx](https://knowledge.rudolphresearch.com/how-to?hsLang=en#verilinkrx) - [FAQ](https://knowledge.rudolphresearch.com/faq?hsLang=en#main-content) - [Printers](https://knowledge.rudolphresearch.com/faq?hsLang=en#printers) - [Warranty Coverage](https://knowledge.rudolphresearch.com/faq?hsLang=en#warranty-coverage) - [VeriLink Rx](https://knowledge.rudolphresearch.com/faq?hsLang=en#verilink-rx) - [Audit Trail](https://knowledge.rudolphresearch.com/faq?hsLang=en#audit-trail) - [Ports & Connections](https://knowledge.rudolphresearch.com/faq?hsLang=en#ports-connections) - [Software/Upgrades](https://knowledge.rudolphresearch.com/faq?hsLang=en#software-upgrades) - [Sample Cell](https://knowledge.rudolphresearch.com/faq?hsLang=en#sample-cell) - [AlcoTest-RI](https://knowledge.rudolphresearch.com/faq?hsLang=en#alcotest-ri) - [Quartz Control Plate (QCP)](https://knowledge.rudolphresearch.com/faq?hsLang=en#quartz-control-plate-qcp) - [Octapol](https://knowledge.rudolphresearch.com/faq?hsLang=en#octapol) - [Density](https://knowledge.rudolphresearch.com/faq?hsLang=en#density) [![RRA logo](https://knowledge.rudolphresearch.com/hs-fs/hubfs/RRA%20logo.webp?width=300&height=137&name=RRA%20logo.webp "RRA logo")](http://rudolphresearch.com) Welcome to the Rudolph Research Knowledge Base Copyright © 2026, https://rudolphresearch.com/