Ion Science GasCheck IS - Manual (Page 7)

GASCHECK 3000 & 3000IS MANUAL Ion Science Ltd
Page 7 of 28 Unrivalled Detection. www.ionscience.com
Introduction
Scope and definitions
This manual provides installation, operation and maintenance instructions for the GasCheck 3000 and
3000is. You must use the GasCheck as specified in this manual.
Read this manual before you install and operate the GasCheck. Important safety information is highlighted
as WARNING and CAUTION instructions; you must obey these instructions. The use of WARNINGS and
CAUTIONS is defined below.
The units of measurement used throughout this manual conform to the SI international system of units of
measurement
Description
Refer to Figure 1. The GasCheck is a portable, battery-powered, hand-held gas leak detector. Indications of
a leak are shown on the digital display (2) and are also given by a front panel mounted LED flasher (3) and
as audible clicks from the rear panel loud speaker (6). Two versions of GasCheck 3000 are available:
• The standard GasCheck 3000 - suitable for leak detection of all non-flammable gases other than air.
•
The GasCheck 3000is - intrinsically safe and is suitable for leak detection of hydrogen and other
flammable gases, and for leak detection in hazardous areas of Ex ia IIC T4 rating.
The GasCheck has a convenient storage and carrying case, together with a spare battery holder, a long
flexible probe (for leak detection in areas where access is restricted) and a box-spanner for probe changing.
Principal of operation
When the GasCheck is switched on, a small internal fan draws gas samples through the probe and into the
GasCheck. The GasCheck measures the thermal conductivity of the gas samples.
When you first switch on the GasCheck (or when you press the manual zero key: see Section 4.1), an auto
zero is made. If further samples have a different thermal conductivity from the zeroed sample, the Gas
Check calculates and displays the difference as a leak rate.
This means that you can use the GasCheck to detect any gas other than that in which the Gas Check is
zeroed.
WARNING
Warnings are given where failure to observe the instruction could result in
injury or death to people.
CAUTION
Cautions are given where failure to observe the instruction could result in
damage to the equipment, associated equipment and process.