KNAUER AZURA UVD 2.1S UV Detector

The KNAUER AZURA® UVD 2.1S is a compact, cost-effective single-wavelength UV detector designed for routine HPLC applications. Despite its small footprint, it delivers reliable performance and excellent technical specifications, making it one of the most compact HPLC UV detectors available on the market.

Equipped with a deuterium lamp covering the wavelength range from 190 to 500 nm, the detector is suitable for a broad range of analytical chromatography applications. Its intelligent design provides quick access to the flow cell, enabling fast replacement and simplified maintenance. A wide selection of interchangeable flow cells is available, including bio-inert and stainless-steel versions for analytical and preparative LC applications with flow rates ranging from 10 μL/min up to 10 L/min.

Key Features

• Compact single-wavelength UV detector for HPLC
• One of the smallest HPLC UV detectors available
• Wavelength range from 190 to 500 nm
• Deuterium lamp with integrated GLP chip
• Suitable for routine analytical applications
• Compact AZURA® housing design
• Easily accessible flow cell for rapid replacement
• Wide range of interchangeable flow cells available
• Compatible with analytical and preparative LC applications
• Flow rates from 10 μL/min up to 10 L/min
• Stand-alone operation via front panel
• LAN, RS-232, and analog communication interfaces
• Compatible with major chromatography data systems
• Available as a module for AZURA® ASM 2.2L
• Low maintenance requirements

Technical Specifications

Detection System

• Detection channels: 1
• Light source: Deuterium (D₂) lamp with integrated GLP chip
• Wavelength range: 190–500 nm
• Spectral bandwidth: 13 nm (FWHM)
• Wavelength accuracy: ±3 nm
• Wavelength precision: 0.7 nm

Performance

• Noise: ±20 µAU at 254 nm
• Drift: 300 µAU/h at 254 nm
• Linearity: >2.0 AU at 274 nm
• Maximum data rate:
  • 50 Hz via LAN
  • 20 Hz via analog output
  • 10 Hz via RS-232

Flow Cells

• Flow cells sold separately
• Bio-inert and stainless-steel options available
• Suitable for analytical and preparative chromatography
• Flow rates from 10 μL/min to 10 L/min

Communication and Control

• Front panel operation
• Mobile Control software
• Software control
• Event control
• Analog control
• Terminal protocol

Interfaces

• LAN (RJ-45)
• RS-232 (SUB-D 9)
• Multi-pin connector
• Analog interface (RCA connector)

Inputs

• Autozero
• Start (IN)
• Error (IN/OUT)
• 0–10 V Analog Input

Outputs

• Error (OUT/IN)

Analog Signals

• Analog wavelength input: 0–10 V
• Analog output: 1 × ±2.5 V scalable
• Resolution: 20-bit

GLP Functions

• Lamp operating hours monitoring

Display

• LED display

Environmental Conditions

• Operating temperature: 4–40 °C
• Humidity: <90% non-condensing

Power and Dimensions

• Power supply:
  • Input: 100–240 V
  • Output: 24 V DC
• Power consumption: 60 W
• Dimensions (W × H × D): 121 × 129 × 187 mm
• Weight: 1.5 kg

Applications

• Routine HPLC analysis
• Quality control laboratories
• Pharmaceutical analysis
• Food and beverage testing
• Environmental analysis
• Academic research
• Preparative liquid chromatography
• Compact and space-limited laboratory environments