Agilent Technologies VS Series Guide de référence

VS Series Quick Reference Card

Start Up/Shutdown

Start Up

1. Plug the leak detector power cord into an appropriate 20

A mains supply receptacle.

2. Move the power switch on the rear power control panel

to the lposition. The SYSTEM READY indication

appears on the lower left of the Home screen in the

status line after about 3.5 minutes.

Refer to the VS Series Helium Mass Spectrometer Leak

Detector Operation Manual for instructions to accurately

read in the E-9 to E-11 range.

Verify Sensitivity/Calibration

1. Press the TEST button.

2. Press CONTROL PANEL on the Home screen.

3. Press STD LEAK to open internal calibrated leak.

4. Verify that the leak reads the same as the leak value

found on MENUS/CALIBRATION SET-UP screen.

If the unit does not accurately read the value of the STD

LEAK (+/- 2 minor divisions), calibrate the unit.

5. Press the Xbutton to close the internal leak.

Execute Calibration

1. Press TEST button to place the system in test mode.

2. Press CONTROL PANEL on the Home screen and the

Control Panel appears.

3. Press CALIBRATE. The system performs an

automated calibration of the system to the internal

standard leak in approximately 3 minutes. After

calibration, the unit returns to Test mode.

For information on calibrating to an external standard leak,

see the VS Series Helium Mass Spectrometer Leak Detector

Operation Manual.

Shutdown

• Move the power switch on the rear power control panel

to the 0position.

The system can be in any mode when shut down. When the

system is shut down, all valves in the system close. If the

system is not in Vent mode, the test port remains under

vacuum and may be difficult to open.

Test/Vent Controls

•Te s t - When the system is in the Vent state, press TEST

to automatically advance the leak detector through

roughing, and into test

•Ve n t - Advances the unit to the vented state; press and

hold VENT for one second.

Custom tests cycles, including the rough time, test time, and

leak rate reject levels are activated from the MENU/REJECT

& AUDIO SET POINTS and AUTO SEQUENCER screens.

Home Screen

This screen is generally active during leak detector use and

contains information that is needed for everyday operations.

(1) Linear and/or Log Leak Rate Bar Graph - Displays

real-time helium readings.

(2) Digital Leak Rate - Correlates directly with the bar

graph leak rate display. The units of measurements are

selected on the Units Set-Up screen.

(3) Test Port Pressure - Displays the test port pressure as

measured by a thermocouple device mounted just

below the test port. The test port pressure appears in

black text when OK and red when above maximum test

pressure, 10 Torr.

(4) Reject Status Indicator - Indicates when any of the four

independent set points are enabled and activated.

(5) Status - Displays the current leak detector operating state

or condition.

(6) Zero - Used to negate the presence of background

helium. It is only visible on the Home screen when

activated from the CONTROL PANEL screen.

Gross Test - Replaces Zero when Gross Test is activated

(ADVANCED PARAMETER screen). Opens the Gross

Test screen to locate leaks in roughing mode.

Test

Button

Ve n t

Button

Control Panel Screen

This screen accesses frequently used functions.

•PressControl Panel on the Home screen and the screen

appears.

(1) STD LEAK - Introduces helium from the internal

standard leak into the system, and is only functional

while the leak detector is in fine test mode. It allows for

verification of the system sensitivity and calibration.

When active, STD LEAK appears on the Home screen

status line.

(2) ZERO ENABLE - Activates the Zero function on the

Home screen, allowing an operator to exclude the

background helium signal from the leak rate display.

(3) Audio Controls - The audio signal is a unique

pitch/frequency signature at every leak rate so that the

relative size of the leak can be gauged by ear.

• Volume Adjust - Press or to

decrease/increase the volume of the audio signal.

• Volume On/Off- Press to toggle audio signal

on/off. The volume level is restored at the same level

as when shut off.

(4) HOLD - Places the system in Hold and isolates the

vacuum system from the test port, but does not vent the

test port. This only functions while in Test mode.

(5) CALIBRATE - Press CALIBRATE and an automated

calibration is performed. Internal or External Leak

appears to indicate which leak the system uses to

calibrate.This parameter is set on the Calibration

Set-Up screen.

(6) DONE- Returns unit to Home screen.

Calibration Set-Up

This screen indicates the current leak rate of the internal

standard leak, and accesses the following functions:

(1) INTERNAL LEAK VALUE - Displays the leak rate of the

internal Std Leak, compensated for the unit’s internal

temperature.

(2) EXPIRES ON- Displays the date one year after the

installation of the internal Std Leak.

(3) EXTERNAL LEAK VALUE - Change the value of the

leak that you installed by pressing on this text and

entering your leak value.

(4) CALIBRATE WITH - Sets which leak is used during the

calibration routine.

(5) Mode - Sets the calibration mode:

•FULL calibration optimizes all of the appropriate

parameters in approximately three and a half

minutes.

•FA S T calibration adjusts only the gain parameter and

takes approximately one minute.

If the gain goes above a predetermined limit, the unit

switches from Fast to the Full mode.

Screen Flow

Manual No. 699909943 Rev. C

June 2010

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