Description
The Waters 2487 Dual λ Absorbance Detector is a two-channel, tunable, ultraviolet/visible (UV/Vis) detector designed for high-performance liquid chromatography (HPLC) applications. The Waters 2487 Dual λ Absorbance Detector can operate either as a stand-alone unit (with a chart recorder or integrator) or as an integral part of a Waters chromatography system.
Specifications:
- Wavelength range: 190 to 700 nm
- Bandwidth: <5 nm
- Wavelength accuracy: +1.0 nm
- Wavelength repeatability: +0.1 nm
- Single λ dry noise: <5 µAU (at 230 nm, 1 –second digital filter, 30-second segments, 10-Hz data rate, analytical cell)
- Wet noise: <8 µAU (at 230 nm, 1-second digital filter 30-second segments, 10-Hz data rate, analytical cell)
- Dual channel noise (dry): <35 µAU (measured at 230 nm, running at 230 to 280 nm with 2-second filter at 1-Hz data rate; dry, analytical cell)
- Dual channel noise (wet): <45 µAU (measured at 230 nm, running at 230 to 280 nm with 2-second filter at 1-Hz data rate; 1 ml/min, flow of acetonitrile, analytical cell)
- Linearity: <5% at 2.5 AU, propylparaben at 257 nm
- Drift: 1.0 x 10-4 AU/hr. max (∆T = +2°C/hr.)
- Thermal drift: 1.0 x 10-4 AU/°C max (∆T = +2°C/hr.)
- Sensitivity setting range: 0.0001 to 4.0000 AUFS
- Filter setting range
- Single-wavelength: 0.1 to 5.0 seconds
- Dual-wavelength: 1 to 50 seconds
- Time-constant: To 5.0-second Hamming filter
- Digital data rates:
- 1,2,5,10,20,40,80 Hz (single channel)
- 1,2 Hz (dual channel)
- Analog output data rates (single λ mode):
- 10,20,40,80 Hz (channel A)
- 10 Hz only (channel B)
- Lamp source: 30-W High Brightness Deuterium lamp, 0.5 nm aperture, pre-aligned 2000 silicon photodiodes (matched pair)
- Second-order filter: Automatic for wavelengths > 370 nm
- Wavelength calibration filter: Erbium filter, used at startup or on demand
- Flow cell: TaperSlit flow cell design
- Nitrogen purge: Purge fitting present on optics bench
- Path length: 0 mm (standard analytical)
- Cell volume: 10 µL (standard analytical)
- Pressure limit: 6895 kPa (69 bar,1000 psi)
- Materials: 316 stainless steel, fused silica, Tygon
- Operating temperature: 4 to 40 °C (39 to 104 °F)
- Operating humidity: 20% to <95%, noncondensing
