Commands and Tips for Third-Party Devices
Waters 2487 UV Detector

 Tip: 

Before data acquisition can start, the detector needs some time to load the parameter settings. That is why a Wait command is required before data acquisition is started.

In addition to the standard commands, the Waters 2487 UV Detector provides the following commands (please note that the display Filter level determines which commands are displayed):

 

Command

Min

Max

Default

Description

Data_Collection_Rate
(For more information, refer to Data Collection Rate in the Glossary.)

1 Hz

10 Hz

1 Hz

Indicates the data collection rate for the channels.

Lamp

Off

On

 

Turns the lamp on or off.

 

Commands and Properties of UV Channels

 

Property

Min

Max

Default

Description

AutozeroOn
EventIn²

On

Off

Off

If the property is enabled, autozeroing is performed whenever this is required by an event.

AutozeroOn
WlChange²

On

Off

On

If the property is enabled, autozeroing is performed each time the wavelength is changed.

 Note:

Autozero is performed for all channels, even if only the wavelength of a single channel is changed.

Average

Off

On

On

Allows signal averaging.

FilterTime
Constant³

0.0 s

99.0 s

1.0 s

Time constant for the selected noise filter.

FilterType

None

RC

Hamming

Filter type used to reduce analog and digital signal noise.

Signal.
Upper/
LowerLimit

-10^10 mAU

10^10 mAU

0

Indicates the upper and lower limit for the signal.

Step

Auto, 0.01 s

4.80 s

Auto

Interval between two data points.

Wavelength

190 nm

700 nm

UV_VIS_1: 254.0 nm
UV_VIS_2: 225.0 nm

Wavelength at which the detector measures the signal (see the Troubleshooting section).

 

 Tips:

² It is only possible to change the Filtertype, AutozeroOnEventIn, and AutozeroOnWlChange properties once in the PGM File during negative retention times.

³ It is not possible to change the time constant for the selected filter during data acquisition.

 

For information about how to install the Waters 2487 UV detector, refer to Hardware Installation  Waters 2487 UV Detector: Installation in the Administrator Help section.