Installing and Controlling Third-Party Devices
Merck Hitachi L4250 UV Detector: Installation

Hardware Installation

Device Connection:

To connect the L4250 UV Detector, use a special RS-232 cable (see  Merck Hitachi Cable).

Device Settings:

Set the PAN-RS-232C switch on the instrument's rear to the RS-232C position. DIP switch 2 (labeled Mode) must have the following settings:

Switch 1     1         2    3     4     5      6

                  Off      On  On  On  Off  Off
             (Down) (Up)   

 

Whenever you turn on the detector, activate the Autozero command by pressing first the Start/Stop key and then the Autozero key on the instrument’s panel. Only then, you can perform the Autozero command from the PC as well.

Restrictions:

No restrictions known.

 

Software Installation

Install the Device Driver in the Chromeleon Server Configuration. (For more information about the program, refer to Software Installation and Communication  The Server Configuration Program.)

  1. Start the Chromeleon server.

  2. Start the Server Configuration program.

  3. Add the detector to the timebase. Select Add Device on the Edit or context menu, and then select Hitachi (or Merck) from the Manufacturers list box and L4250 Detector from the Devices list box.

  4. The following settings are required:

On the Merck Hitachi L4250 Detector tab page, verify that the Demo Mode is disabled.

On the UV_VIS_1 tab page, enter a name for the UV detector. In addition, select the COM port to which the UV detector is connected and define the channel for data acquisition.

The Error Levels tab page classifies the severity of any errors that occur. It is generally not necessary to change the default settings.

Further Information

 Tip:

For more installation details, refer to the manual for the instrument.

For an overview of the detector, refer to  Merck Hitachi L4250 UV Detector- Overview.

For an overview of the different Merck Hitachi instruments that can be controlled by Chromeleon, refer to  Merck Hitachi.