Updated 26 August 2011.

To download the latest version CI-340 software, click on the links below (you may have to right click to save the file). Save the files to an empty directory on your hard drive.

This section is for RS-232 versions of the CI-340 (SN: 340-004-080xx and earlier)


To restore software to the CI-340, connect the RS-232 cable from the instrument to the computer. Connect the Accessories cable to the instrument. Make sure the switch in the Accessories cable is away from the instrument. Start the DLV1210.exe program. Hold the ON switch down on the instrument while you open the CI_340V5xxx.s19 file with the DLV1210.exe program. After about 15 seconds, the instrument should display DLC. Newer instruments may or may not beep while the ON key is held down until the DLC is displayed. If DLC is not displayed, run the DLV1210.exe program a second time while holding the ON button down on the instrument.



ci_340SN1.s19 185kB V5.018 29/03/2005 for SN ending 03001, 03003, 03004, 03005

For serial numbers ending 03002, 03006-06005:
ci_340V5037T.s19 209kB V5.037T 14/02/2007 use this version to control a tablet CO2 source CI-301AD.
ci_340V5037.s19 209kB V5.037 14/02/2007 use this version to control a cartridge CO2 source CI-301AD.
ci_340V5037A.s19 209kB V5.037A 07/11/2006 use this version for S/N: 340-003-04012 and 340-003-05015 only! (Slower valve modification)

For serial numbers ending 06006-06025 and 06027:
ci_340V5139.s19 209kB V5.139 14/02/2007 For CI-340

For serial numbers ending 06026, 06028 and higher:
ci_340V5137a.s19 209kB V5.137a 16/11/2006

DLV1210.exe 616kB V1.2.1.0 30/09/2005 New DL file required to transfer V5027 or later code to instrument.
rh2kpa.exe 31kB A program to convert RH and temperature to kPa vapor pressure
C340dfV5204.exe 610kB V5.2.0.4 27/02/2008 This uses a default CSV file extension and allows up to COM8 for port.
README.TXT 6kB V5.019 and later 29/03/2005

This section is for USB versions of the CI-340 (SN: 340-005-080xx and later)

To restore firmware to a USB version of the CI-340, connect the USB cable from the instrument to the computer. Run the DLV1211.exe program on the Windows computer. Turn on the power to the instrument (or hold the power button, if the power does not stay on). Open the CI_340V6141.s19 file on the Windows computer and continue holding the power button until DLC is displayed on the instrument screen. The instrument will shut off when the download is complete. The DLV1211.exe, CI340Boot.code, and CI_340V6141.s19 files should all be in the same directory (folder) when you begin this process.

C340dfV6010.exe 607kB V6.0.1.0 02/10/2009 USB ONLY! Transfers data from CI-340 to PC. This is for newer versions of the CI-340 that use USB.
CI_340V6141.s19 210kB V6.141 08/25/2011 USB ONLY! Firmware code in CI-340. This is for newer versions of the CI-340 that use USB. This version solves a Flash memory issue with the V6039 or V6140 versions.
CI340Boot.code 2kB Required for V6037 and later. USB ONLY! Firmware code in CI-340. This is for newer versions of the CI-340 that use USB.
DLV1211.exe 566kB V1.211 19/03/2008 USB ONLY! Programs firmware code to CI-340. This is for newer versions of the CI-340 that use USB.
CI340Viewer.exe 2MB USB ONLY! Views the CI-340 screen on a PC. This is for newer versions of the CI-340 that use USB.