ion science GasCheck Tesla User manual

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GasCheck Tesla
Instrument User Manual V1.2R

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GasCheck Tesla Instrument User Manual V1.2R
Page 3 of 26
Declaration of conformity
The EU Authorised Representative of the manufacturer Ion Science limited has sole responsibility, on the date this product
accompanied by this declaration is placed on the market, the product conforms to all technical and regulatory requirements of the
listed directives
Authorised Representative: ISM Deutschland GmbH · Laubach 30 · D-40822 Mettmann, Germany
Product: GasCheck G 1, 2 and 3 (Graphical)
Product description: Handheld micro thermal conductivity sensor used to detect gas leaks. This instrument
has been designed specifically for search and location of non-flammable gases such as
helium and CFC’s.
Directive: EMC Directive (2014/30/EU)
LVD Directive (2014/35/EU)
Standards:
EN IEC 61010-1:2010 Safety requirements for electrical equipment for measurement, Control, and laboratory use
–Part 1: General requirements
EN ISO/IEC ISO 9001:2015 Quality management systems –Requirements
EN I 61326-1:2013 Electrical Equipment for measurement, control and laboratory use
EMC Requirements (Class B and General Immunity)
Name: Clemens A. Verley Position: Chief Executive Officer
Signature: Date: 31st December 2020

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GasCheck Tesla Instrument User Manual V1.2R
Page 4 of 26
Contents
Declaration of conformity..................................................................................................................................... 3
Statements........................................................................................................................................................... 5
Safety................................................................................................................................................................................5
Quality Assurance.............................................................................................................................................................5
Responsibility of use.........................................................................................................................................................5
Disposal ............................................................................................................................................................................5
Calibration Facility............................................................................................................................................................5
Legal Notice......................................................................................................................................................................5
Instrument Description......................................................................................................................................... 6
Packing list ........................................................................................................................................................... 7
How GasCheck Tesla works ................................................................................................................................... 8
Thermal Conductivity .......................................................................................................................................................8
Instrument main menu ......................................................................................................................................... 9
Running screen....................................................................................................................................................10
Gas selection ..................................................................................................................................................................10
Sensitivity .......................................................................................................................................................................10
Battery status .................................................................................................................................................................10
Backlight .........................................................................................................................................................................10
Gas measurement ..........................................................................................................................................................10
Sound indication.............................................................................................................................................................10
Bar graph ........................................................................................................................................................................10
Peak hold........................................................................................................................................................................10
Functions ............................................................................................................................................................11
Contrast..........................................................................................................................................................................11
Backlight .........................................................................................................................................................................11
Sound..............................................................................................................................................................................11
Peak hold........................................................................................................................................................................11
Calibration ......................................................................................................................................................................11
Battery selection ............................................................................................................................................................12
View Data .......................................................................................................................................................................12
Units ...............................................................................................................................................................................12
Display ............................................................................................................................................................................12
Gas selection ..................................................................................................................................................................13
Getting started ....................................................................................................................................................14
The Keypad.....................................................................................................................................................................14
Using GasCheck Tesla...........................................................................................................................................15
The GasCheck Tesla instrument.....................................................................................................................................15
GasCheck Tesla fan current monitor .....................................................................................................................16
Probe options......................................................................................................................................................17
Detecting leaks....................................................................................................................................................18
Overview ........................................................................................................................................................................18
Calibration ..........................................................................................................................................................19
Over view........................................................................................................................................................................19
Selecting Factory or Custom Calibration........................................................................................................................19
Calibration procedure using 'ppm' units........................................................................................................................19
Calibration procedure using 'cc/sec' units .....................................................................................................................20
Replacing batteries..............................................................................................................................................21
Instrument specification ......................................................................................................................................22
Replacement parts ..............................................................................................................................................23
Instrument warranty and service..........................................................................................................................24
Warranty ........................................................................................................................................................................24
Service ............................................................................................................................................................................24
Contact details................................................................................................................................................................24
Manual log..........................................................................................................................................................25

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GasCheck Tesla Instrument User Manual V1.2R
Page 5 of 26
Statements
Safety
Please read this manual in full before using the GasCheck Tesla instrument. ION Science Inc takes no
responsibility for damage, injury or death resulting from misuse, misunderstanding or negligence while using this
gas detector. Please contact ION Science Inc via the address below for clarification on any aspect of this manual
that is not understood or for additional information required.
This instrument should only be used by qualified or competent persons with suitable knowledge of the hazards
relating to the gases contained within equipment or in the local environment.
Quality Assurance
GasCheck Tesla instruments are manufactured by ION Science Inc within an ISO 9001:2015 compliant quality
system, which ensures that the equipment supplied to our customers has been designed and assembled
reproducibly, and from traceable components.
Responsibility of use
Many gases are hazardous and can cause explosions, 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 Tesla can detect a large range of gases but some gases are more difficult to detect.
It is the responsibility of the user to ensure the GasCheck Tesla instrument has the sensitivity to detect the
required gas before reaching potentially dangerous levels.
Inadequate performance of the gas detection equipment described in this manual may not necessarily be self-evident
and consequently equipment must be regularly inspected and maintained. ION Science recommends that personnel
responsible for equipment use implement a regime of regular checks to ensure it performs within calibration limits,
and that a record be maintained which logs calibration check data. The equipment should be used in accordance with
this manual, and in compliance with local safety standards.
Disposal
Disposal of GasCheck Telsa, its components and any used batteries shall be in accordance with local and national
safety and environmental requirements. This includes the European WEEE (Waste Electrical and Electronic
Equipment) directive. ION Science Inc offers a 'take-back' service. Please contact Ion Science Ltd for more
information.
Calibration Facility
Ion Science Ltd offers a calibration service including the issue of a traceable certificate valid for 12 months. A
GasCheck Tesla Calibration Kit offers a means of checking and calibrating the instruments against a known
reference, however ION Science Inc strongly recommend the instrument is returned to an approved service
centre on an annual basis for general maintenance and calibration.
Legal Notice
While every attempt is made to ensure the accuracy of the information contained in this manual, Ion Science accepts
no liability for errors or omissions, or any consequences deriving from the use of information contained herein. It is
provided "as is" and without any representation, term, condition or warranty of any kind, either express or implied. To
the extent permitted by law, Ion Science shall not be liable to any person or entity for any loss or damage which may
arise from the use of this manual. We reserve the right at any time and without any notice to remove, amend or vary
any of the content which appears herein.

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GasCheck Tesla Instrument User Manual V1.2R
Page 6 of 26
Instrument Description
The GasCheck Tesla is a portable, handheld gas leak detector capable of detecting helium leaks within a high magnetic
field, typically surrounding Magnetic Resonance Imaging (MRI) scanners and can be effectively used while the
machinery is still in operation. GasCheck Tesla is part of a range of gas leak detectors 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 Tesla uses thermal conductivity to detect gas which offers a robust sensor technology that
requires practically no maintenance beyond annual servicing.
All GasCheck models have an easy to use graphical interface with an intuitive keypad allowing simple function
selection and adjustment. The instrument has an LCD display, LED indicator and audible sounder that indicate the
detected signal.
Applications where GasCheck instruments are typically used include:
•Medical - used by service technicians during maintenance of Magnetic Resonance Imaging (MRI) scanners and
testing of membrane materials and sealing of glove boxes.
•Laboratory applications - detection of leaks from mass spectrometers and chromatograph equipment.
•Quality assurance - testing seal integrity after product manufacture.
•Industrial - leaks from gas cylinders, pipe work and process equipment.
•Pneumatic - valve seal testing.
The GasCheck Tesla 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.
Selectable units:
cc/sec Cubic Centimeters per second offers a reading that indicates the volume of gas escaping into
atmosphere from a single point i.e. leakage from a hole in a gas filled vessel or pipe.
ppm Parts Per Million is a concentration reading. GasCheck Tesla will display the concentration being
detected however it is more difficult to gauge the quantity of leakage.
mg/m3Milligrams per meter cubed is also a unit that measures concentration. (See ppm above)
g/yr Grams per Year is an alternative measure of leak rate.
NOTES:
GasCheck Tesla is NOT intrinsically safe so should not be using in a potentially explosive environment. Please contact
ION Science Inc for more information or visit www.ionscience.com/usa
Ambient air pressure, heat and humidity can affect readings.
The GasCheck Tesla range is NOT 'Gas Specific' i.e. it can NOT differentiate between gases. Selecting a specific gas on
the GasCheck Tesla allows the instrument to calculate concentrations and leak rates of that gas only if that gas is being
detected.

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GasCheck Tesla Instrument User Manual V1.2R
Page 7 of 26
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 then contact the instrument supplier for advise before use.
Item
Qty
Description
Check
1
1
GasCheck Tesla instrument with short probe and nozzle fitted
2
1
Long probe
3
1
Box spanner used to change probes
4
1
Spare battery clip
5
1
Quick start guide
6
1
Calibration certificate

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GasCheck Tesla Instrument User Manual V1.2R
Page 8 of 26
How GasCheck Tesla works
Thermal Conductivity
All gases conduct heat but by varying amounts, if an object is heated and then the source of heat is removed, the
object will eventually cool down to match 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.
The GasCheck Tesla 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 different to air will affect 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 Tesla 's Thermal Conductivity sensor.
A fan draws a small flow 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 different 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 GasCheck Tesla as leak
rates or gas concentrations.
NOTES:
- Some gases have similar thermal properties to that of air, therefore the GasCheck Tesla can only detect larger
concentrations of these gases.
- Some gases have positive and other gases negative signals. To simplify the instruments function GasCheck Tesla only
displays changes as positive readings.
- The GasCheck Tesla can NOT differentiate between gases! Selecting a specific gas on the GasCheck Tesla allows the
instrument to calculate concentrations of that gas only if that gas is being detected.
Probe
Temperature
Stable
Fan
Air flow
Display

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GasCheck Tesla Instrument User Manual V1.2R
Page 9 of 26
Instrument main menu
Once the GasCheck Tesla 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 set and adjusted to suit the application.
Pressing the 'Esc' key while viewing this
'Running screen' will access the
instruments Main Menu. Repeated
pressing of the 'Esc' returns back to the
'Running screen'.
Running screen
Main Menu
Contrast
Backlight
Sound
Peak Hold
Calibration
Battery
View Data
Units
Gas

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GasCheck Tesla Instrument User Manual V1.2R
Page 10 of 26
Running screen
GasCheck Tesla displays the 'Running screen' whenever the instrument is being used to detect leaking gas, the
illustration below outlines the various information and icons.
Gas selection
The GasCheck Tesla displays the gas being measured in the top left of the running screen. The GasCheck Tesla will display
the gas as selected at the factory, however the Tesla has a range of gases that can be selected via an internal gas table.
Sensitivity
GasCheck Tesla has three (3) sensitivity levels, X100 (times one hundred) is most sensitive, X10 (times ten) is mid-range
and X1 (times one) is least sensitive. See the sensitivity of various gases on the table under ‘Functions (continues), Gas
Selection’.
Battery status
When the battery symbol is filled in the battery is full, when just an outline is displayed the battery is exhausted.
Backlight
The backlight symbol shows the status of the backlight even in bright daylight.
Gas measurement
The GasCheck Tesla measures the leak rate of gas leakage in which ever units are selected.
Sound indication
This symbol shows if the sounder is on or off, if the semi-circle (on the right) of the symbol is present then the sound is
switched on, if not the sounder is switched off. The beep that occurs with each key press cannot be switched off.
Bar graph
The bar graph increases as gas is detected. This graph is not scaled and should be used for indication only.
When gas is detected and the bar graph has reached its maximum level, a different sensitivity level can be selected to
give a wider detection range.
Peak hold
When selected, peak hold displays the maximum measurement on the display. Pressing the ENTER key resets the
reading but also logs the peak reading in memory.
Gas selection
Sensitivity levels
Gas measurement
Bar graph
Battery status
Backlight indicator
Sound indicator
Peak hold indicator
Data logs