MRC INE-112N-GC User manual

INE-112N-GC
Gas Chromatograph
User Manual
PLEASE READ THIS MANUAL CAREFULLYBEFORE OPERATION
Hagavish st. Israel 58817 Tel: [phone], Fax: [phone] [email protected]
MRC.4.22

Notice
This manual only applies to INE-112N-GC Model Gas Chromatograph, excluding large diameter
capillary direct sampler, capillary split sampler, six-way plane switching valve, reformer, and other
accessories. If you use these accessories, the corresponding manual will be attached in the package.
Without the prior written permission of our company, it's prohibited to copy, reproduce or translate
any part of the manual into other language(s). The contents of this manual are subject to change
without prior notice.

Table of Contents
1 Principles, Applications and Features....................1
1.1 Principles.........................................................1
1.2 Applications.....................................................1
1.3 Features...........................................................2
2 Technical Indicators and Specifications .................3
2.1 Technical Specifications...................................3
2.2 Specifications ..................................................4
2.3 Optional Accessories.......................................5
3 Installation Instructions.........................................6
3.1 Installation Conditions ....................................6
3.2 Unpacking Check.............................................7
3.3 Preparation and Treatment of Gas Source......8
3.4 External Gas Flow Connection ........................9
3.5 Installation of Packed Column.......................12
3.6 Installation of Liner and Spacer of Split
Sampler ..................................................................19
3.7 Installation of Capillary Column System........21
4 Appearance and Structure of the System ...........25
4.1 Appearance of the Instrument......................25
4.2 Layout............................................................26
4.3 Structural System ..........................................28
5 Operations...........................................................31
5.1 Self-test .........................................................31
5.2 Keypad Operations........................................32
6 Basic Operations..................................................33
6.1 Monitor Interface..........................................33

6.2 Sampler Interface..........................................36
6.3 Column Oven Interface .................................38
6.4 Detector Interface .........................................40
6.5 File Management Interface (For Automatic
Model)....................................................................43
6.6 System Configuration Interface.....................47
6.7 Online Configuration Interface......................49
7 Operation Examples ............................................51
7.1 FID Detector ..................................................51
8 Maintenance and Troubleshooting .....................56
8.1 Maintenance of the Instrument....................56
8.2 Cleaning of the Instrument ...........................57
9 Warranty..............................................................71

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1 Principles, Applications and Features
1.1 Principles
The gas chromatograph uses gas as the mobile phase (carrier gas). When the sample is "injected" into the sampler by
the micro-injector, it will be carried by the carrier gas into the capillary column. Due to the difference in the
distribution or adsorption coefficient of each component in the chromatograph between the mobile phase (gas phase)
and the stationary phase (liquid or solid phase) in the chromatograph, under the flushing of the carrier gas, each
component is repeatedly repeated between the two phases. Participate in two times to separate the components in
the column, and then use the detector attached to the column to detect the components in order according to their
physical and chemical properties.
1.2 Applications
The instrument has a wide range of applications and is suitable for trace detection of environmental protection, air,

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water pollution and other pollution; analysis, monitoring, and research of poisons; biochemistry; clinical applications;
pathology and virus research; food fermentation; petrochemicals; petroleum processing; oil Product analysis; geology
and prospecting research; organic chemistry; synthesis research; health and quarantine; pollution detection analysis
and research.
1.3 Features
The full-color large 7-inch LCD touch screen brings users better human-computer interaction.
High-precision temperature control system, high control accuracy (better than ±0.05℃), the oven has a
nine-phase programmed temperature;
Manual flow/pressure adjustment of the gas path, the screen displays the flow/pressure value
The gas path has air leak and air shortage alarm functions;
System self-checking and fault identification functions;

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2 Technical Indicators and Specifications
2.1 Technical Specifications
Oven Temperature Control Indicators
Temperature range
5℃～400℃above room temperature (15℃～399℃above room temperature)
(increment: 1℃)
Temperature accuracy
better than ±0.1
℃
(measured at 200
℃
)
Programmed
temperature
nine-phase programmed temperature
Rate setting 0.1℃～40℃/min (increment: 1℃), measured at 200℃
Constant temp time 0～999min (increment: 1℃)
Sampler, Flame Ionization Detector (FID) Indicators
Temperature range
15
℃～
399
℃
above room temperature (increment: 1
℃
)

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Temperature accuracy
better than ±0.1
℃
(measured at 200
℃
)
Flame Ionization Detector
Detection limit
(Normal
hexadecane in isooctane)
INE-112N-GC
D≤3×10
-12
g/s
Max. limit temp
399℃
Baseline noise ≤5×10-14A
Baseline drift ≤1×10-12A/30min
2.2 Specifications
INE-112N-GC
Dimensions 568mm×560mm×490mm
Weight 40Kg
Power supply voltage AC220V±22V, 50Hz±1Hz

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2.3 Optional Accessories
The basic type of INE-112N-GC gas chromatograph has following components, including chassis, capillary column
sampler, a full set of capillary column carrier gas and auxiliary gas flow, computer temperature controller, flame
ionization detector and micro current amplifier, general purifier, cylinder pressure reducing valve, and the connecting
cable of the exterior gas pipeline.
Basic INE-112N-GC gas chromatograph 1 pc
Operation Manual 1 pc
Product warranty card 1 pc
Accessories and spare parts (see Packing List) 1 set
The following accessories of Model INE-112N-GC gas chromatograph are optional, and can be ordered with the basic
instrument (if needed). They can also be ordered at any time after the instrument has been operated.

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Autosampler
Switch valve of gas sampler
Reformer (conversion agent containing methanation nickel)
Chromatography workstation
Deoxidizing tube
3 Installation Instructions
3.1 Installation Conditions
The instrument should be placed on a solid stable laboratory bench which complies with the environmental
requirements. The ambience shall maintain clean, free of severe dust pollution.
To ensure that the instrument works normally, the working environment shall meet following criteria:

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The temperature shall remain between 5℃~35℃, with relative humidity not greater than 85%.
It shall be free from direct sunlight, shock, dramatic turbulence, or erosion of corrosive substances.
The power voltage is AC220V ± 22V, with frequency of 50Hz ± 1Hz, and must be equipped with a good grounding
line.
It shall stay away from high-intensity magnetic field, electric field and the occurrence of high-frequency waves of
electrical equipment. The grounding line shall not share the same power outlet with other devices.
Note: If the power supply voltage fluctuates, it is recommended to use the AC electronic power supply with power
higher than 5000W.
3.2 Unpacking Check
Open the package (please save the outer packing box in case you need to move it), and count the host and spare parts
according to the accessory spare parts list. If there is any error, please contact your local sales agent or contact our
company directly.

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3.3 Preparation and Treatment of Gas Source
3.3.1 Gas Source
The FID detector of INE-112N-GC needs three types of gas, i.e.
carrier gas (generally, nitrogen), hydrogen and air. The purity of the
nitrogen must not be lower than 99.99%, and that of the hydrogen
not be lower than 99.9%. The air must not contain water, oil or
contaminated gas.
3.3.2 Gas Source Treatment
Before three types of gas enter the instrument, it must strictly undergo purification treatment. You can choose the
general purifier manufactured by our factory. See Figure 3.3.2. The purifier consists of the purification pipe and switch
valve, and it is connected between the instrument and the gas source. The purification pipe is added with activated
“5A” molecular sieve and silica gel. If it is necessary to input the gas source into the chromatograph, turn the switch

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valve knob to “On” position. The duct connection of outdoor air should be stainless steel or copper pipes.
3.4 External Gas Flow Connection
3.4.1 Connect the pipeline to the connector
INE-112N-GC gas chromatograph gas pipeline mainly consists of 3×0.5 polyethylene duct (Annex 28 #) or 2×0.5
stainless steel duct. Nuts are M8×1, 3.2 (Attachment 24 #) or M8×1, 2.1 (Attachment 7 #). The connection diagram of
these two kinds of conduits and joints is shown in Figure 3.4.1. In the picture, the purpose of the φ3×0.5 polyethylene
pipe with sealing gasket is to enhance the strength of the pipe at the sealing point to ensure smooth gas and sealing
performance. If φ2×0.5 stainless steel connecting pipes are used, φ2×0.5×20 sealing gaskets are not needed. The
sealing ring in the picture can also be replaced by a φ5×1 PTFE tube cut into a length of 5mm. Two sealing rings must
be used in use, otherwise the sealing performance will not be guaranteed. The maximum seal pressure is
0.5MPa~0.8MPa (5kgf/cm2~8 kgf/cm2). Check whether the gas circuit joints are leaking. Do not use ordinary soapy
water with strong alkalinity to avoid corrosion of the parts. It is better to use a dilute solution of sodium lauryl sulfate
as the leak test liquid.

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1. Nut (M8×1, φ3.2) (accessory 24#)
2. Airproof gasket (phosphor copper) (accessory 21#)
3. Two pieces of airproof coils (accessory 22#)
4. φ3×0.5 polyethylene pipe (accessory 28#)
5. Airproof gasket (φ2×0.5×20 stainless steel pipe) (accessory
23#)
6. Joint
7. φ2×0.5 stainless steel pipe
8. Nut (M8×1, φ2.1) (accessory 7#)
Figure 3.4.1 The connection of the external gas flow joint

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3.4.2 External Gas Flow Connection
Cut the polyethylene pipe of φ3×0.5 (accessory 28#) into six pieces according to requirements. Then, referring to
Figure 3.4.1, use them to link the pressure-reducing valve joint and the purifier inlet (joint on the switch valve), and to
link the purifier outlet (joint on the drying pipe) and the gas flow inlet of the main device. Now, the connection of the
external gas flow is finished.
3.4.3 Inspection of External Gas Flow Leakage
After the connection of the external gas flow is completed, it is necessary to examine for leakage with following steps:
‧Shut down the constant flow valve for the carrier gas and the needle valves for hydrogen and air on the packed column
gas flow of the main instrument.
‧Turn on the high pressure valve of the steel cylinder (before doing so, the low adjustment lever must be in a relaxed
state), slowly turn the low pressure adjustment lever until the low pressure gauge indicates 3kg/cm2.

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‧Turn off the high pressure valve of each steel cylinder. At this time, the low pressure indication value on the pressure
reducing valve should not drop. Otherwise, there is a leak in the external air circuit, which needs to be eliminated.
3.5 Installation of Packed Column
For the on-column injection, the side of the injection inlet should be allowed for a section of empty column (at least
50mm), in order to facilitate the needle of the sampler to be fully inserted into the gasifier during injection.
Due to the rigidity of the column, φ5.7mm glass packed column must be installed on the side of the injection inlet and
the detector inlet as well. For both side, the installation procedure is the same.
3.5.1 Install φ3mm and φ4mm metal columns to the inlet of packed column
Use Figure 3.5.1 as the installation instructions:
1) Mount the nut (SN#: 6), graphite airproof gasket (SN#: 4) and packed column transition joint (SN#: 1) into the
packed column in sequence.

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2) Make the column head extend out of the transition joint by 20mm~30mm (as shown in the figure), hold this
position and tighten the nut by hand, then use two suitable wrenches, one clamped on the nut, the other
clamped on the transition joint, reverse tightening and sealing.
3) Install the nut (M12×1, φ6.2) and graphite airproof gasket (φ6) into the transition joint in turn.
4) Push the transition joint together with column head into the sampler outlet joint and insert the column as deep as
possible (Note: the lower end of the gasification tube must be inserted into the column head).
5) Keep this position, first tighten the nut (M12×1, φ6.2) with the injector outlet connector by hand, and then
tighten it with an M12 wrench and seal it.

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SN# Name Specifications
1 Transition joint
φ
3mm
(on the instrument)
φ
4mm
(accessory 33#)
2 Graphite gasket
φ
6mm
(accessory 16#)
φ
6mm
(accessory 16#)
3 Nut M12×1, φ6.2
(accessory 24#)
M12×1, φ6.2
(accessory 24#)
4 Graphite gasket
φ
3mm
(accessory 17#)
φ
4mm
(accessory 19#)
5 Metallic column
φ
3mm
(outside diameter)
φ
4mm
(outside diameter)
6 Nut M8×1, φ3.2
(accessory 27#)
M8×1, φ4.2
(accessory 28#)
Figure 3.5.1

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3.5.2 Install φ5mm and φ4mm metal columns and 5.7mm glass column to the inlet of packed column
Use Figure 3.5.2 as the installation guide:
1) Put the nut (SN#: 3) and graphite gasket (SN#: 2) directly into the packed column in turn (without the assistance of
transition joint).
2) Insert the column into the sampler outlet joint as deep as possible (note: the lower end of the gasification tube
must be extended into the column head, and ensure that the needle tip goes into the column while sampling).
3) Hold this position. First, tighten the nut to the sampler outlet joint with hand. Then, tighten it with wrench M12
and seal it.
Warn: During the installation of glass column, if the nut is over-tightened, the column will be broken. Please be
careful with the operation.

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SN#
Item
Specification
1
Packed column
φ5 metallic
column
φ6 metallic
column
φ5.7 glass
column
2
Graphite
airproof gasket
φ5
(accessory 18#)
φ6
(accessory 16#)
φ6
(accessory 16#)
3
Nut
M12×1,
φ5.2
(accessory 25#)
M12×1,
φ6.2
(accessory 24#)
M12×1,
φ6.2
(accessory 24#)
Figure 3.5.2