Firma:              Waters

Modell:            717 plus

Kommentar:   Dokumente engl.

Description

The Waters 717plus Autosampler injects samples into a high performance liquid chromatography (HPLC) system. The Waters 717plus automates sampling by storing up to 96 sampling methods or "steps". Each method controls all injection parameters for a sequence of vials.

The Waters 717plus may be used as either a stand-alone unit or as a component in a Waters IEEE-488 based HPLC system. As part of an IEEE-488 based system, the autosampler may be controlled by Waters PowerLine­ System Controllers or Waters Data Workstations.

The Waters 717plus autosampler features:

Sample carousels and vials

Two carousel sizes:

•     48-vial carousel - Holds 4 mL sample vials

•     96-vial carousel - Holds 1 mL sample vials

Multi-method automatic sampling

An auto sampling multi-method may contain:

•    Up to 96 steps, with each step containing a different sampling method

•     Random access to any single or series of vials

Priority (Stat) sampling

The Stat function:

•     Interrupts a programmed sampling method.

•     Performs injections from a single vial or a series of vials.

•     Returns to the interrupted sampling method, and continues auto sampling from the Interruption point.

Automation options

The 717plus allows you to program the following options:

•     Auto Addition - Allows you to inject a common solution with each sample.

•     Auto Standards - Allows you to run standards automatically during a run.

•     Auto Transfer -Allows you to program the 717plus to transfer solutions from specified           vials to your sample vial; to mix the solution; and to inject.

Interaction with other LC modules

The Waters 717plus sends and receives signals from other LC modules, including:

•     Inject Start - Occurs when the sample is injected into the mobile phase stream. Initiates data acquisition, fraction collection, and detector autozero. Contact closure is initiated by the autosampler.

•     Inject Stop - Occurs when the programmed run time expires. Signals data integrators that the chromatography run is complete. Contact closure is initiated by the autosampler.

•     Hold - Halts the autosampler until the signal changes. Can be used to prevent sample injections if an LC system module fails or while a data acquisition system is preparing for the next run. Signal is received from external devices.

•     Report Delay - Delays the next injection until a data integrator can complete a report for the previous run. The delay is a programmable interval that occurs after the Inject Stop signal.

•     Programmable Event - The 717plus includes a programmable event output that can control external devices during a run.

IEEE-488 bus communication

As part of a Waters IEEE-488 system, the Waters 717plus autosampler accepts programming and control signals from an LC System controller.

RS-232 communications

The Waters 717plus autosampler sends data over an RS-232 communication line. The data is in ASCII format.

Purge and compression

Purge and compression testing copability includes:

• Purge - Fills the sample loop and iniection syringe with fresh mobile phase.

• compression - Tests the sample loop for gas content (compressibility). Compressibility limits may be set for specific mobile phases. Testing may be automatic or Operator initiated.

Needle wash system           

•            Prevents Cross-contamination of samples

•            Extends seal life by removing the mobile phase and the sample from the sampling needle

Semiprep chromatography

For semiprep chromatography (up to 2 mL iniections), the 717plus autosampler may be configured with optional:

•            2000 µL sample loop - Required for iniections greater than 200 µL

•            2500 µL syringe - Speeds pre-iniection sequence for samples greater than 150 µL

Microbore (<1µL) Chromatography

For microbore chromatography, the 717plus autosampler may be configured with:

•            25 gL syringe for improved iniection volume precision below 1.0 µL

•            Low volume sample vials

Syringe speed

The autosampler syringe speed is adiustable for each syringe size and allows you to adiust for sample viscosity.

Heater/Cooler

The Waters 717plus Autosampler may be configured with a heater/cooler to maintain constant sample compartment temperature from 4 to 40°C.

Weight

Requires a bench capable of supporting at least 75 lbs.

Power requirements

Requires 6 Amps at 110 Vac (nominal) or 3 Amps at 220 Vac (nominal) from a grounded outlet.