Firma:              Waters

Modell:                         486

Kommentar:     Dokumente engl.

The Waters 486 Tunable Absorbance Detector (the Waters 486) is a single-channel tunable ultraviolet/visible (UV/VIS) detector designed for high performance liquid chromatography (HPLC) applications.

The Waters 486 can operate as a stand-alone unit (with a chart recorder) or with other Waters system modules, such as the Waters 860 Networking Computer System, the Waters 600E Multisolvent Delivery System, or the Waters 745/745B or 746 Integrators.

Wavelength range        The 486 provides a usable light intensity over the wavelength range

and sensitivity                of 190-600 nanometers (nm), although its primary use is in the   ultraviolet wavelength range between 190 and 380 nanometers. The       maximum sensitivity of the instrument is 0.001 absorbance units full                                       scale (AUFS).

Features                        The Waters 486 offers the following features:

• Easy to use operator interface

• Self-calibration to ensure wavelength accuracy

• Battery backup to retain parameter settings when the detector is powered down or during power interruptions

• A deuterium arc lamp

• The patented Taper-Gell© flow cell design which reduces refractive index interference with the absorbance signal

• Optional cells:

• Non-metallic

• Semi-prep

• Microbore

• High Pressure (A cell optimized for operation in LC/MS)

• Lamp shut-off to lengthen usable lamp life

• User selectable chart mark an IV integrator ouput (standard an 10mV)

• Wavelength scanning for determination of optimal wavelength

• Diagnostic routines to verify proper functioning

• A modular design for easy servicing

Operational Specifications

Wavelength range                   190 to 600 nm

(single, fixed wavelength)

Wavelength accuracy             ± 2 nm

Wavelength repeatability         ± 0.25 nm

Noise                                       ±1.0 x 10 ^-5 AU, 1 second filter setting, 210 to 280 nm) dry cell

Drift                                          1.0 x 10 ^-4 AU per °C (after warm-up)

                                               1.0 x 10 ^-4 AU per hour (after warm-up)

Sensitivity Setting Range        0.001 to 2.0 AUFS (under software control)

Filter Setting Range                0.1 to 5.0 seconds (under software control)

Bandwith                                 8 nm

Optical Component Specifications

Lamp Source                          Deuterium arc lamp

Flowcell                                   Dual beam Taper-Cell ^® design

Path length                              10 mm (standard, analytical)

Cell volume                             8 µL (standard, analytical)

Pressure limit                          1000 psi

Materials                                  316 stainless steel, Dynasil ^® ,

                                               Suprasil II ^® , Teflon ^®

Environmental Specifications

Operating temperature            15 to 32.2°C

Operating humidity                  20 to 80%, non-condensing

Shipping and storage              -40° to 65°C

temperature

Shipping and storage              20 to 80% non-condensing

humidity

Dimensions

Height                                      9.2 inches (24 cm)

Length                                     21.5 inches (54.5 cm)

Width                                       11.2 inches (28.5 cm)

Weight                                     38 pounds (17.5 kg)

Electrical Specifications

Line Frequency                       50 Hz, 47 -53 Hz

                                               60 Hz, 57 - 63 Hz

Fuse Ratings                           1.5A, 100/120 VAC

                                               0.75A, 220/240 VAC

Power Consumption               100 VA (Nominal)

DC Power Supply                   +5VDC at 2.2 A (Power limited at 11 W) ±15VDC at 300 mA

Lamp Power Supply                309 mA Regulated Constant

                                               Current (Fused at 3/8 A)

                                               3.0 VAC Filament Heater

                                               (unregulated) (Fused at 6 1/4 A)

                                               500 VDC Arc Strike (nominal)

Instrument Operating Voltages

                                               Voltage                          Setting Range

                                               100 Vac                          85 to 110 Vac

                                               120 Vac                          102 to 132 Vac

                                               220 Vac                          187 to 242 Vac

                                               240 Vac                          204 to 264 Vac

Optical Specifications

                                               Monochromator           Seya-Namioka configuration

                                               Grating                           Concave holographic

                                               Optical Bandwidth         8 nm

                                               Lamp Power                  30W

Optional Flow Cell Specifications

                                 Volume            Path                 Sample                          Reference

                                                         Length            In              Out                In              Out

Analytical Cell                  8 µl             10 mm             0.009"       0.009"            0.009"       0.009"

Semi-Prep Cell             2.5 µl               3 mm             0.040"       0.040"            0.009"       0.009"

Microbore Cell              2.5 µl               3 mm             0.005"       0.005"            0.009"       0.009"

Non-metallic Cell             8 µl             10 mm             0.010"       0.010"            0.020"       0.020"

Mass Spec Cell               8 µl             10 mm             0.009"       0.009"            0.009"       0.009"