Waters 2414 Refractive Index Detector

Operation modesThe 2414 detector operates as a single-channel detector, but can be configuredto operate in one of two modes to acquire refractive index signal data: RIUmode and 410 emulation mode. Additionally, the detector can monitortemperature as an auxiliary channel.RIU modeRIU mode is the default, standalone operating mode for the 2414 detectorwhich monitors a single channel using micro-refractive index units (µRIUs).Note, however, that RIU mode is not compatible with legacy data systems orcontrollers.Methods and timed event programming are available only when the detectoris configured in RIU mode.You can configure several additional parameters when using the detector inRIU mode:• Attenuation in RIU-FS (comparable to the Sensitivity parameter in 410mode) – Where the analog output channel reaches its full value of ±2volts, you can specify a scaling factor in RIU mode for the analog outputchannel that corresponds to the refractive index value. RIU-FS variesfrom 1 to 500 µRIUs.Caution: Changing the attenuation (RIU-FS) setting affects onlythe 2-V analog output• Filter Type – In RIU mode, the filter can be set to the digital Hammingor RC types.• Filter time constant, in seconds – You can program a filter time inseconds. Selecting a value of 0.0 disables all filtering. The default valueis 1.0 seconds.From the RIU mode home screen, pressing Next brings you to a fourth page ofsecondary, or less frequently used, parameters:• Voltage offset, in mV – You can program a voltage offset in millivolts.Only the analog output is affected.• Micro RIU offset in µRIUs – You can program a µRIU offset. Only theanalog output is affected.Detector description 1-13