Agilent Technologies G3388A User manual

Agilent Technologies

Agilent G3388A

Leak Detector

Operation Manual

Notices

No part of this manual may be reproduced in

any form or by any means (including elec-

tronic storage and retrieval or translation

into a foreign language) without prior agree-

ment and written consent from Agilent

Technologies, Inc. as governed by United

States and international copyright laws.

Manual Part Number

5973-1709

Edition

First Edition, December 2007

Printed in USA

Agilent Technologies, Inc.

5301 Stevens Creek Boulevard

Santa Clara, CA 95052

Warranty

The material contained in this docu-

ment is provided “as is,” and is sub-

ject to being changed, without notice,

in future editions. Further, to the max-

imum extent permitted by applicable

law, Agilent disclaims all warranties,

either express or implied, with regard

to this manual and any information

contained herein, including but not

limited to the implied warranties of

merchantability and fitness for a par-

ticular purpose. Agilent shall not be

liable for errors or for incidental or

consequential damages in connec-

tion with the furnishing, use, or per-

formance of this document or of any

information contained herein. Should

Agilent and the user have a separate

written agreement with warranty

terms covering the material in this

document that conflict with these

terms, the warranty terms in the sep-

arate agreement shall control.

Safety Notices

CAUTION

A CAUTION notice denotes a haz-

ard. It calls attention to an operat-

ing procedure, practice, or the like

that, if not correctly performed or

adhered to, could result in damage

to the product or loss of important

data. Do not proceed beyond a

CAUTION notice until the indicated

conditions are fully understood and

met.

WARNING

A WARNING notice denotes a

hazard. It calls attention to an

operating procedure, practice, or

the like that, if not correctly per-

formed or adhered to, could result

in personal injury or death. Do not

proceed beyond a WARNING

notice until the indicated condi-

tions are fully understood and

met.

Operation Manual 3

Contents

1 Introduction 5

2 Operating Procedure 9

3 Function Settings 11

4 Power Supply 13

4Operation Manual

Agilent Technologies

Agilent G3388A Leak Detector

Operation Manual

Introduction

The Agilent Technologies Leak Detector is a portable, highly

sensitive instrument designed to detect helium gas leaks in gas

chromatographs (GCs) and their accessories, such as purge and

trap systems. The detector indicates leaks through a dual

system that consists of an indicating LCD and an audible alarm.

The detector is more reliable and convenient to use than soap

solutions and is capable of detecting even the smallest, hard-to-

reach gas leaks.

Fresh air inlet

Power switch

Inlet for recharger

Left side view Front view

Inlet filter

Display

Charge lamp (in green)

Sample probe

FUNC key

ZERO/ENTER key

6Operation Manual

1Introduction

Use the Agilent Leak Detector only for detecting gases. Never

allow liquids or particles to enter the probe.

To determine whether a GC or a GC accessory is leaking gas,

place the Agilent Leak Detector’s sample probe near the

suspected leak. Make sure that the sample probe remains open

during leak detection. Be careful not to place the probe’s tip

against the connection or fitting that you are checking.

Protect the detector from vibration while it is operating.

Periodically replace the filter (part number 5067-0218) that is

attached at the inlet of the sample probe.

NOTE Be aware that the detector will give a positive response to skin vapor and

to fittings that were recently leak checked with a soap solution.

CAUTION •Do not expose the detector to shock, wet environments, solvents, or

temperatures outside its specified range.

•Do not open the detector’s body.

•Do not use the detector to detect corrosive gases.

•Do not block the fresh air inlet at the top of the detector. Be aware

that the detector’s sensitivity will be adversely affected if it is used

in an area containing the leaking gas.

WARNING • Do not use the detector in areas at risk for fire, explosion, or large

leaks of flammable gas.

• Do not use the detector in areas without sufficient ventilation to

safely detect small leaks of flammable gases.

• Do not use the detector in environments that may be potentially

contaminated with dust or combustible fumes.

Introduction 1

Operation Manual 7

Specifications

Detector: Thermistor-actuated thermal conductivity cell

Thermal conductivity of gases: Lower than 48 × 10-6 cal/cm.s. °C or higher than

68 × 10-6 cal/cm.s. °C (both at 0 °C, 1 atm)

Sensitivity:*

* The sensitivity should be dependent on the difference between the thermal conductivities of gas and

air; a large difference results in a high sensitivity. Also, the kinds of gas and humidity should influence

the sensitivity.

Helium 0.01 mL/min in atmosphere

Battery: Rechargeable nickel metal hydride batteries

Part number 5067-0219

Continuous operation: 5 hours (with new, fully charged batteries)

Display: LCD (12 × 2)

Recharger: AC100 - 240 V, 50 to 60 Hz 0.3 A

Operating temperature range: 10 to 35 °C

Overall size: 65 mm (W) × 37 mm (D) × 143 mm (H)

Net weight: 310 grams

8Operation Manual

1Introduction

Agilent Technologies

Agilent G3388A Leak Detector

Operation Manual

Operating Procedure

1The detector’s batteries are not fully charged when they are

shipped from the factory. Recharge the batteries before using

the detector.

2Wait for 30 minutes after recharging for the batteries’

temperature to stabilize.

3Turn the power switch to the ON position and allow the

detector to warm up for approximately 25 seconds. If the

buzzer sounds during this time, press the ZERO/ENTER key to

stop it.

4When the LCD shows the following display (Standard

display), press the ZERO/ENTER key. Now the detector is ready

to use. “Range_L” may be displayed if this was the last

setting.

Indicating the countdown of the warm-up time by

seconds.

Press the ZERO/ENTER key to skip the warm-up step.

Warming-up display

b. Battery display

a. Range indicator

c. Leak indicator

Standard display

aRangeindicator

Range_H: High sensitivity

Range_L: Low sensitivity

10 Operation Manual

2OperatingProcedure

5Place the sample probe tip near the gas connection to be leak

checked, making sure the probe remains open and isn’t

placed against the connection being checked. Wait

approximately 3 seconds and look for one of the above

displays on the LCD.

When the buzzer function (ON or STEP) is selected, the audible

alarm sounds according to the TONE level selected. (See

Section 3.)

bBatterydisplay

Lit: The batteries are fully charged.

Blinking: The batteries need to be recharged with

the included recharger.

cLeakindicator

Gas Leak Mark: Indicates that a gas leak that has higher

thermal conductivity than air has been detected.

Gas Leak Mark: Indicates that a gas leak that has lower

thermal conductivity than air has been detected.

Zero Leak Mark: Indicates that there are no gas leaks.

This indicator will blink when the detector becomes stable.

When the leak indicator is displayed without leakage, press

ZERO/ENTER to adjust the zero balance.

Out of zero balance Adjust zero balance

This display Indicates that

There may or may not be a gas leak.

There is a gas leak.

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