FLUIDX GasCheck G Series Manual de usuario
USER MANUAL
GASCHECK G SERIES
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© 2018 FLUIDX Equipment, Inc.
CONTACT US
PHONE/FAX
Phone: 801.486.1015
Fax: 801.486.1032
ADDRESS
FLUIDX Equipment, Inc.
139 W. 2260 S.
Salt Lake City, UT 84115
www.uidxinc.com
info@uidxinc.com
SMT-07-1015 rev B
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© 2018 FLUIDX Equipment, Inc.
CONTENTS
1. SCOPE .................................................................................... 1
2. SAFETY .................................................................................. 1
3. OVERVIEW ............................................................................ 2
4. BASIC OPERATION ............................................................ 12
5. MAINTENANCE .................................................................. 16
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© 2018 FLUIDX Equipment, Inc.
1. SCOPE
This manual contains safety, operation, and maintenance information
for GasCheck G Series handheld snier leak detector. Our leak detectors
are designed to ensure safety when used properly. It is the responsibility
of the user to follow safety-related warnings, cautions, notes, and other
requirements described in this manual.
Should a question, comment or problem arise, the information below
is provided as a guide. When returning a unit for factory service or
calibration, contact Portable Leak Detectors for a return material
authorization number (RMA). The device should be boxed securely and
contain all contact information, including return shipping information.
If the device is being sent to the factory for service, a written statement
of the problem or symptoms should then be included. The RMA number
must be on the outside of the package or indicated on the shipping label.
2. SAFETY
Please read this manual in full before using the GasCheck G Series
instrument. Portable Leak Detectors takes no responsibility for damage,
injury or death resulting from misuse, misunderstanding or negligence
while using this gas detector. Please contact Portable Leak Detectors for
clarication on any aspect of this manual that is not understood or for
additional information.
2.1 QUALITY ASSURANCE
GasCheck G Series instruments are manufactured in compliance with
ISO9001:2000, which ensures that the equipment supplied to the customer
has been designed and assembled from traceable components, leaving
Portable Leak Detectors calibrated to traceable standards.
2.2 RESPONSIBILITY OF USE
Many gases are hazardous and can cause explosion, poisoning and
corrosion resulting in damage to property and life. It is the responsibility
of the person using this instrument to ensure it is being used in
accordance with this manual and that the instrument is functioning
correctly before use.
The GasCheck G Series handheld leak detectors can detect a large range
of gases but some gases are more dicult to detect. It is the responsibility
of the user to ensure the GasCheck instrument has the sensitivity to detect
the required gas before reaching potentially dangerous levels.
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2.3 DISPOSAL
Disposal of the GasCheck G Series its, components, and any used batteries
shall be in accordance with local and national safety and environmental
requirements.
2.4 CALIBRATION
Calibration service is recommended on a yearly basis. LACO Technologies
has an A2LA Accredited calibration lab which complies to ISO/IEC 17025-
2005 and ANSI/NCSL Z540-1-1994. Also complies with ISO-9001 quality
standard. Call LACO at 801-486-1004 for more information.
3. OVERVIEW
The GasCheck is a portable handheld gas detector instrument
predominantly used for detecting gas leaks and can detect almost all
gases to varying degrees. It is powered by standard AA size batteries and
will accept both Alkaline and Nickel Metal Hydride (rechargeable) types.
The GasCheck uses thermal conductivity as its means of detecting gas
which oers a robust sensor technology that requires practically no
maintenance beyond annual servicing.
All GasCheck G Series models have an easy to use graphical interface with an
intuitive keypad allowing simple function selection and adjustment. It can
be upgraded to add features without the need to be returned to the supplier
and without having to modify the internal rmware. It has an LCD display,
LED indicator and audible sounder than indicates the detected signal.
Table 1: GasCheck Specications
COMPONENT DESCRIPTION
TEMPERATURE 0 to 50° C (32 to 122° F)
STORAGE TEMPERATURE -25 to 70° C -(13 to 158° F)
INSTRUMENT CASE Polyurethane
DIMENSIONS L.390 x W.60 x H.50mm L (15.35” x W2.35” x 2.0”)
WEIGHT 0.5 kg (1.0 lb)
INGRESS RATINGS IP20
LENGTH OF LONG PROBE 300 mm *12”)
DETECTION TYPE Thermal conductivity
DETECTION TIME TO T90 1 sec (short probe) 9 sec (long probe)
CLEAR DOWN TIME 1 sec (short probe) 9 sec (long probe)
BATTERY TYPE Alkaline or NiMH AA (qty 4)
BATTERY LIFE AT 20°C (68°F) 40 hours (20 hours when using the backlight
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Table 2: GasCheck Replacement Parts
PART NUMBER DESCRIPTION
A-08045 Long probe
A-08043 Short probe
1/BH-01 Replacement battery holder
08024CPC8 Nozzle
A-08029 Box Wrench
CM515.0-4101FAG/1 Leak Standard with Rellable Helium Reservoir,
5x10-4 cc/sec
CM515.0-410SFA0/1 Open Style Leak Standard for use with helium
regulator and tank, 5x10^-4 cc/sec
3.1 APPLICATIONS
Common applications include:
• Quality assurance: Testing seal integrity after product manufacture
• Laboratory applications: Detection of leaks from mass spectrometers
and chromatograph equipment
• Industrial: Leaks from gas cylinders, pipe work and process equipment
• Medical: Testing of membrane materials and sealing of glove boxes
• Pneumatic: Valve seal testing.
3.2 UNITS OF MEASUREMENT
The GasCheck is calibrated against a 5 E-4/cc/s helium leak to allow
volumetric readings and also a 5000ppm helium to allow measurement of
concentrations.
Table 3: Selectable Units of Measurement
UNIT DESCRIPTION
cc/sec Cubic Centimeters per Second oers a reading that indicates
the volume of gas escaping into atmosphere from a single
point, i.e., leakage from a hold in a gas lled vessel or pipe.
ppm Parts Per Million is a concentration reading. The GasCheck G
will display the concentration being detected. However, it is
more dicult to gauge the quantity of leakage.
mg/m3 Milligrams per meter cubed is also a unit that measures
concentration. (See ppm above)
g/yr Grams per Year is an alternative measure leak rate.
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© 2018 FLUIDX Equipment, Inc.
3.3 IMPORTANT NOTES
The GasCheck G Series range is NOT intrinsically safe, so it should not be
used in potentially explosive environment. Intrinsically safe GasCheck
instruments are available; please contact Portable Leak Detectors for more
information.
• Ambient air pressure, heat, and humidity can also aect readings.
• The GasCheck G range is NOT “gas specic”, i.e., it cannot dierentiate
between gases.
3.4 PACKING LIST
Please remove all packing material and then check the content of the
carry case against the list below before use. Should the instrument or any
accessory appear damaged or missing, contact the instrument supplier for
advise before use.
Table 4: Packing List
ITEM QTY DESCRIPTION CHECK
1 1 GasCheck G instrument w/short probe and nozzle tted
2 1 Long Probe
3 1 Box wrench to change probe
4 1 Spare battery clip
5 1 User manual
6 1 Calibration certicate
7 1 CD containing additional product information
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© 2018 FLUIDX Equipment, Inc.
3.5 THERMAL CONDUCTIVITY
All gases conduct heat by varying amounts. If an object is heated and
the source of the heat is then removed, the object will eventually cool
down to match the ambient air temperature. This action occurs because
the ambient air surrounding the object carries the access heat into the
surrounding atmosphere. This principal is also the same for objects that
are cooler than the surrounding ambient air. Dissipation of heat into an air
atmosphere is known and is a predictable rate. However, if the ambient air
is replaced with an alternative gas like helium, the rate at which an object
cools down changes.
If the object mentioned above had its environment replaced with pure
helium it would cool down to the environment temperature about 6
times faster.
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© 2018 FLUIDX Equipment, Inc.
The GasCheck G Series contains a heated thermistor bead that transmits
heat to a block of material that remains at a constant temperature. As air
passes through the detector chamber a constant amount of heat passes
from the bead to the block. Gases that are dierent to air will aect the
rate at which heat transmits from the bead to the block. These rates of
change are measured and displayed as leak rates.
The diagram below shows the basic functionality of the GasCheck Thermal
Conductivity sensor. A fan draws a small ow of gas through the probe and
into the sensing chamber. The thermistor bead heats up when electrical
power is applied. As air passes through the cell a constant level of heat is
transmitted to a Temperature Stable block through the air. This rate of heat
transmission is used to Zero the instrument.
When gases with dierent thermal qualities pass through the chamber,
the amount of heat being transmitted to the Temperature Stable block
changes. These changes are measured, calculated and displayed on the
GasCheck as leak rates or gas concentrations.
NOTE Some gases have similar thermal properties to that of
the air, therefore the GasCheck can only detect larger
concentrations of these gases.
NOTE Some gases have positive and other gases have negative
signals. To simplify the instruments function, the GasCheck
only display changes as positive readings.
NOTE The GasCheck G2 cannot dierentiate between gases.
Selecting a specic gas on the GasCheck G Series allows
the instrument to calculate concentrations of that gas only
if that gas is being detected.
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© 2018 FLUIDX Equipment, Inc.
3.6 INSTRUMENT MAIN MENU
Once the GasCheck has run through its START UP routine it will display its
normal RUNNING SCREEN used when locating gas leaks. Before using the
instrument, the various settings should be adjusted to suit the application.
Pressing the ESC key while viewing this RUNNING SCREEN will access the
instrument’s MAIN MENU. Repeated pressing of the ESC returns the user
back to the RUNNING SCREEN.
Figure 1: Running Screen
NOTE The amount of functionality varies between models. See
Table 1: GasCheck Specicationsto nd which functions
relate to which model.
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