Shimadzu Spd20a User Manual Online

lamp typically provides reliable performance for approximately 2,000 hours of use. Replace the lamp when energy levels drop below acceptable thresholds or when baseline noise becomes intolerable.

| Symptom | Likely Cause | Manual Section | |------------------------|-------------------------|-----------------------| | Lamp fails to ignite | End of lamp life | 5.2 – Lamp Replacement| | High baseline noise | Air bubbles in cell | 4.3 – Purging the Cell| | Negative peaks | Wavelength wrong / Ref cell dirty | 3.5 – Wavelength Setup | | Leak error persistent | Flow cell window cracked| 5.4 – Cell Replacement| | No communication | IP address conflict | 2.7 – LAN Configuration|

Buffer salts can precipitate inside the flow cell, blocking light and causing severe noise.

The SPD-20A utilizes a dual-beam optical system to ensure a high signal-to-noise ratio. It can monitor wavelengths ranging from 190 nm to 700 nm. Whether you are performing routine quality control or complex research analysis, the SPD-20A provides the reliability needed for precise quantification. Key Specifications: Wavelength Range: 190 to 700 nm. Noise Level: 0.5 x 10^-5 AU or less. Drift: 1 x 10^-4 AU/h or less. Light Source: Deuterium (D2) lamp. Installation and Setup

The Shimadzu SPD-20A is one of the most reliable and widely used UV-Vis detectors in the HPLC (High-Performance Liquid Chromatography) market. Known for its low noise level and high sensitivity, it is a workhorse in quality control and research laboratories.

The Shimadzu SPD-20A offers several key features that make it a popular choice among chromatographers:

190 to 700 nm (SPD-20A) / 190 to 900 nm (SPD-20AV).

This section provides an overview of the major functional components described in the service manual.

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Perform a "Lamp ON" command via the front panel or LabSolutions software. Allow at least 30 minutes for the Deuterium ( D2cap D sub 2 ) lamp to stabilize. :

Proper maintenance requires periodic lamp replacement. The manual explains how to safely access the deuterium ( D2cap D sub 2 ) lamp and, on the , the tungsten (W) lamp.

The is an indispensable guide for achieving reliable and precise chromatographic data. By adhering to the maintenance schedules and operating procedures outlined by Shimadzu, users can maximize the lifespan of their detector and ensure consistent performance in their HPLC applications.

Fix: Check lamp energy in the "Maintenance" menu. If energy is low, replace the lamp.

The service manual includes a comprehensive Fault Diagnosis chapter. Below are common error messages, their meanings, and solutions derived from the manual and field experience.

The SPD-20A covers 190 to 700 nm, ideal for most UV-based applications. The SPD-20AV extends this to 190-900 nm, suitable for visible region detection.