Firma:              Spectra Physics

Modell:            SP 8880

Kommentar:    Dokumente engl.

INTRODUCTION

The Autosampler is a microprocessor-controlled modular automatic liquid sampling unit designed for use in liquid chromatography. It is designed to be part of a total system which includes a pump, a detector, and an integrator.

The Autosampler accommodates up to 81 samples, and up to 10 injections per sample in a completely automated operation. Interaction between the Autosampler and other Spectra-Physics instruments is available through the LABNETS communications network.

Specifications

The Autosampler consists of a single microprocessor-controlled module, containing Keyboard and Display, the Injector Valve, Helium Degas control for flush solvent, diagnostics, and all required mechanical and electrical assemblies. Also included are a detachable flush reservoir, four sample trays, necessary tools, tubing and fittings for installation, and Operators Manual.

Capabilities include:

·        80 sample vials in four removable trays.

·        Vials are identified by the quadrant and the position in the tray.

·        Trays can be numbered 1 - 20 and automatically read.

·        A priority sample, position 5.01, can be run without disrupting the automatic sequence.

·        The same vials can be used repetitively for calibration and re­calibration sequencing.

·        Full loop and variable volume injection (SP8880 only) modes.

·        Samples are withdrawn by a digital stepmotor-driven syringe

·        through the concentric sampling needle which permits vial

·        pressurization with a gas in full loop mode.

·        Automatic flush sequence after every injection.

·        Variable sample draw and injection dwell rates for the analysis of viscous samples.

·        Sample size, number of injections, run time and analysis file can be varied with each vial.

·        Injection Volume:

·        Variable Injection mode (SP8880 only) 1 microliter to 300 microliters in 1 microliter increments (1500 µL with optional 2.5 mL syringe).

·        Fixed Loop mode - 20 microliter Standard, 10, 50, 100, 200, and 500 microliter loops available.

·        Precision: 0.5% RSD at 10 µL for fixed loop mode and 1.0% RSD at 10 µL for variable volume mode. Precision values are based an a properly maintained instrument that is tested under the conditions stated in Appendix C.

·        Number of injections per vial: 1 to 10.

·        Minimum volume required: 5 microliters for a 1 microliter injection using an optional microvial (P/N 3115-0400).

·        Sample vial: 2 mL glass with Teflon-faced septum and screw­cap. Optional microvial permits sampling from limited sample volumes.

·        Cycle time: 2 minutes between samples for 20 microliter in­jection using variable volume injection mode.

·        Analysis time: up to 9,999 minutes, or longer under external control.

·        Gradient delay: up to 99.99 minutes.

·        Inputs/outputs (standard) :

·        Inject hold input; Gradient Start output; Pump Stop output; Inject Signal output; +5 Volt, 30 mA output.

·        BCD output and control board (Optional on SP8880 only) : Vial Position information and remote Autosampler mechanism control.

·        Communications board (standard on SP8880): Provides all features of BCD board above plus RS-232-C communications and LABNET for complete system communication and syn­chronization. Also provides 4 timed event outputs and equili­bration delay up to 99.9 minutes.

·        Bar code label reading (Optional) : Provides bar code label reader for positive sample identification. The label is read and file conditions selected as the vial is lifted to the fixed sam­pling needle.

·        Power requirements: 90-130 VAC 50/60 Hz or 200-265 VAC 360 VA 50/60 Hz

·        Environment: +100 to +400 C, 20% to 95% non-condensing relative humidity.

·        Weight: 43.0 lbs (19.5 kilograms)

·        Dimensions:    Width                    Height                   Depth

                            15.0 inches           9.75 inches           22 inches

                            (38 cm)                 (25 cm)                 (56 cm)