Instruction Manual
INFRARED GAS
ANALYZER
TYPE: ZSP
INZ-TN4ZSPb-E
INTRODUCTION
Congratulations on your purchase of Fuji Gas Analyzer. (Type:ZSP)
• Read this instruction manual carefully to ensure correct installation, operation and maintenance of the
gas analyzer. Incorrect handling may lead to unexpected trouble or injury.
• The specifications of the gas analyzer is subject to change without prior notice for improvement.
• Modification of the gas analyzer without permission is strictly prohibited. Fuji is not responsible for any
damage caused by modification made without permission.
• This safety precaution/operation manual should be kept by users of the analyzer.
•Keep this manual at hand for your future reference.
• This instruction manual must be given to final users.
Manufacturer : Fuji Electric Instrumentation Co., Ltd.
Type of product : Described in nameplate on main frame
Date of manufacture : See company nameplate on main unit.
Country of manufacture : Japan
Request
• Transcription of a part or the whole of this manual without permis-
sion is prohibited.
• The contents of this manual are subject to change without prior
notice.
– i –
© Fuji Electric Systems Co., Ltd. 1997
Issued in June, 1997
Rev. 1st edition March, 2000
Rev. 2nd edition January, 2002
CAUTION ON SAFETY
Before use, carefully read this “Caution on safety” so that the product is usable correctly.
• The precautions given here are of great significance to safety. Therefore, they should be observed without fail.
The precautions on safety are classified into ranks “Danger”, “Caution” and “Prohibition.”
Danger Items which pertains to incorrect handling that may lead to personal death
or serious injury
Caution Items which pertains to incorrect handling that may lead to medium trouble,
injury or physical damage
Prohibition Items which pertains to prohibition (DO NOT)
Installation, carrying, relocation and storage of gas analyzer
Danger
• This product is not explosion-proof. Do not use it in explosive gas-rich atmosphere. Otherwise,
serious accidents such as explosion and fire may be caused.
Caution
• Installation, carrying and relocation must be made by a qualified contractor or your dealer.
Incorrect installation results in falling accidents, electric shocks or fire accidents.
• The gas analyzer is heavy. Special care should be taken for installation to prevent trouble or injury due
to falling or dropping of the analyzer.
•When the gas analyzer needs to be lifted, be sure to put on gloves. Do not hold it with bare hands to
prevent injury.
• This product must be installed in a place that meets the conditions specified in the ‘instruction manual’
Use in a place that is outside the given installation conditions may cause an electric shock, fire or
malfunction.
• During installation work, attention should be paid not to allow entrance of wire fragments, etc. into the
product. Otherwise, a fire, trouble or malfunction may be caused.
– ii –
Caution on wiring
Caution
•Request an installation company or your dealer to carry out wiring.
If wiring is incomplete, shock hazard or injury may be caused.
•Class D grounding construction is mandatory. Otherwise, shock hazard may be caused.
< Caution for wiring company >
For preventing shock hazard, fire and injury, be sure to observe the following.
• Before wiring, be sure to turn off the primary power supply. If this is neglected, you may receive an
electric shock.
• For grounding, use a 600 V-IV wire having a diameter of 2 mm2 or more and an adequate dielectric
strength.
• Connect the power supply which meets the rating of product. Connection of other power supply may
cause a fire.
• Select the diameter of input and output wires, which matches the rated current of gas analyzer.
• Be sure to use solderless terminals for connection to the input and output terminal block.
• Use the terminal block for branching the output wire.
• Be sure to fix the input and output wires onto the floor, wall surface, etc. and use a protective device
for wires.
Caution on use
Danger
• If you notice malodor or abnormal sound, stop the instrument immediately. If this is neglected, fire
may occur.
Caution
•When the analyzer is to be operated after it has been left unused for a long time, the operating procedure is different from the normal stop/start procedure. It should be handled according to the procedure
shown in the instruction manual to ensure its proper performance and to prevent trouble or injury.
•Do not operate the analyzer for a long time with its door left open to avoid entry of dust into the
analyzer. Dust deposits will result in damage to the analyzer.
– iii –
Caution on use
Prohibition
• Do not insert a rod or your finger into the fan (electronic cooler at ceiling), otherwise injury may be
caused by the rotating blades.
• Do not touch metal, finger, etc. to the input and output terminal block of analyzer. Otherwise, shock
hazard or injury may be caused.
• Smoking and use of fire/flame is prohibited in the vicinity of the gas analyzer. Otherwise, a fire may
occur.
•A water-filled container such as a bucket should not be placed on the roof of the gas analyzer having
indoor specifications. If such a container turns over, spilled water may cause shock hazard or burning
inside the analyzer.
Caution on maintenance / inspection
Danger
•When handling standard gas such as calibration gas, read the instruction manual for the standard gas
for correct handling. Special care should be taken when handling hazardous gas such as CO gas and
the like to prevent poisoning.
• During maintenance or inspection, be sure to turn ON the ventilation fan in the analyzer to prevent
poisoning due to gas leakage.
• When the gas filter of the analyzer is to be replaced or the washing unit needs maintenance, be sure to
close the calibration gas valve. Especially, if the calibration gas valve is located at the sample gas
inlet, the replacing or washing shall be done after closing the calibration gas valve to prevent poisoning or other trouble.
Caution
• The gas converter is heated to about 220°C. When the catalytic agent needs to be replaced, turn OFF
the power for the converter and use heat-proof gloves about 30 minutes later.
• When the fuse is blown off, check the cause of it and replace it with the same type of fuse having the
same capacity to prevent electric shocks or other trouble.
• When the analyzer is provided with a power leak relay, press the test button to confirm proper operation before making maintenance or inspection to prevent electric shocks.
• Be sure to lock the door. Do not allow unauthorized persons to use the door key. Do not touch the
door carelessly to prevent electric shocks and other trouble.
The following items must be observed to prevent electric shocks or injury and to ensure safety.
• Take off metallic objects such as wrist watch before starting the work.
• Do not touch the device with wet hands.
– iv –
Others
Caution
• When trouble cannot be remedied even after following the instruction manual, contact your dealer or
Fuji's service station (serivice engineer). Do not disassemble the device, as it results in electric shocks
or injury.
• Do not use replacement parts which are not specified by makers. Use of these parts will not only
provide the required performance but also result in damage or other trouble.
• Replacement parts used for maintenance must be handled as incombustible objects.
– v –
CONTENTS
INTRODUCTION ................................................................................................................................................... i
CAUTION ON SAFETY ....................................................................................................................................... ii
1. OUTLINE....................................................................................................................................................... 1
2. SPECIFICATIONS ........................................................................................................................................ 1
3. COMPOSITION ............................................................................................................................................. 1
4. INSTALLATION ........................................................................................................................................... 2
4.1 Selection of installation site ................................................................................................................ 2
4.2 Selection of gas sampling location...................................................................................................... 2
4.3 Installation work.................................................................................................................................. 3
4.4 Connection of cables ........................................................................................................................... 3
4.5 Connection of pipes............................................................................................................................. 3
5. DESCRIPTION OF EACH PART ................................................................................................................. 5
6. PREPARATION FOR OPERATION ............................................................................................................ 5
6.1 Injection of clean water ....................................................................................................................... 5
6.2 Supply of external power .................................................................................................................... 5
6.3 Check of sample piping, exhaust piping, etc....................................................................................... 5
6.4 Airtightness test................................................................................................................................... 6
6.5 Setting of temperature inside locker.................................................................................................... 6
6.6 Warm-up time ..................................................................................................................................... 6
7. INDICATION/OPERATION PANEL ........................................................................................................... 7
7.1 Name and description of each component of indication/operation panel ........................................... 7
7.2 Function and indication of indication/operation panel........................................................................8
7.3 General operation of indication/operation panel ................................................................................. 9
8. CALIBRATION ........................................................................................................................................... 10
8.1 Kinds of standard gas ........................................................................................................................ 10
8.2 Preparation of standard gas ............................................................................................................... 10
8.3 Calibration concentration setting (except zirconia O2 sensor) .......................................................... 12
8.4 Calibration concentration setting (zirconia O2 sensor) ..................................................................... 14
8.5 Zero calibration (air point calibration in case of zirconia O2 sensor) ............................................... 16
8.6 Span calibration (low concentration point calibration in case of zirconia O2 sensor) ...................... 17
8.7 Auto calibration................................................................................................................................. 18
9. OPERATION ............................................................................................................................................... 25
9.1 Operating procedure .......................................................................................................................... 25
– vi –
10. MAINTENANCE ......................................................................................................................................... 26
10.1 Routine maintenance and inspection................................................................................................. 26
10.2 Periodic maintenance and inspection ............................................................................................... 28
10.3 Other maintenance and inspection .................................................................................................... 28
10.4 Concentration guarantee term of standard gas cylinder (for NOx, SO2, CO and O2 analyzer) ......... 29
10.5 Maintenance of sampling device....................................................................................................... 29
10.6 Maintenance of zirconia O
sensor.................................................................................................... 35
2
10.7 Others, major component figures ...................................................................................................... 35
11. STANDARD ACCESSORIES AND SPARES ........................................................................................... 36
11.1 Standard accessories.......................................................................................................................... 36
11.2 Spares for 1 year (optional) ............................................................................................................... 37
12. PROCESSING OF HEATING PIPE ENDS ................................................................................................ 38
12.1 Outline ............................................................................................................................................... 38
12.2 End processing method ..................................................................................................................... 39
12.3 Check after piping ............................................................................................................................. 41
12.4 Clamp support ................................................................................................................................... 41
12.5 Specifications of tube trace ............................................................................................................... 42
12.6 Specifications of heating pipe ........................................................................................................... 42
13. TROUBLESHOOTING ............................................................................................................................... 43
13.1 Troubleshooting of instrument .......................................................................................................... 43
13.2 Error codes and remedies .................................................................................................................. 44
14. SPECIFICATIONS ....................................................................................................................................... 45
CODE SYMBOLS ............................................................................................................................................... 49
SAMPLING SYSTEM BLOCK DIAGLAM ...................................................................................................... 50
OUTLINE DIAGRAM......................................................................................................................................... 52
CONNECTION DIAGRAM ................................................................................................................................ 53
– vii –
1. OUTLINE
The infrared gas analyzer (ZSP) can continuously and accurately measure the concentration of gases such as NOx,
SO2, CO, CO2 and O2 contained in the flue gas from a stationary generating source. The analyzer is available in
both single-component and multi-component types depending on customer’s specification. The actual analyzer
may somewhat differ from the descriptions in this manual depending on the specifications demanded by each
customer. For outline diagram, piping system, hardware configuration, specifications, standard accessories, spares
and supplies, refer to the delivery specifications submitted individually.
Note: For details of the infrared gas analyzer, refer to the instruction manual INZ-TN2 ZRG separately
prepared.
2. SPECIFICATIONS
Please refer to Chapter 14. Specifications. Note that the contents of the separately issued data sheet have priority.
3. COMPOSITION
(1) Gas sampling section 1 set (depending on customers’ designation)
(2) Gas piping 1 set (depending on customers’ designation)
(3) Accommodation locker 1
Infrared gas analyzer ZRG 1 or 2 (depending on customers’ designation)
Zirconia O2 sensor ZFK 3, 4 1 (depending on customers’ designation)
Converter ZDL 1 (for NOx measurement)
Sampling 1 set
Standard gas, pressure regulator 1 set (depending on customers’ designation)
Standard accessories 1 set
Spares and supplies for 1 year 1 set (depending on customer’s designation)
– 1 –
4. INSTALLATION
Danger
• This product is not explosion-proof. Do not use it in explosive gas-rich atmosphere. Otherwise, serious
accidents such as explosion and fire may be caused.
Caution
• Installation, carrying and relocation must be made by a qualified contractor or your dealer.
Incorrect installation results in falling accidents, electric shocks or fire accidents.
• The gas analyzer is heavy. Special care should be taken for installation to prevent trouble or injury due
to falling or dropping of the analyzer.
• When the gas analyzer needs to be lifted, be sure to put on gloves. Do not hold it with bare hands to
prevent injury.
• This product must be installed in a place that meets the conditions specified in the ‘instruction manual.’
Use in a place that is outside the given installation conditions may cause an electric shock, fire or malfunction.
• During installation work, attention should be paid not to allow entrance of wire fragments, etc. into the
product. Otherwise, a fire, trouble or malfunction may be caused.
There are a number of conditions which must be met for operating the gas analyzer stably over a long time.
4.1 Selection of installation site
A site which satisfies the following conditions should be selected for installation of the analyzer.
(1) A place which is near the gas sampling location
(2) A place which is not exposed to direct sunlight or heat radiated from a high temperature object (One
which is not exposed to rain or water splash in case of indoor type)
(3) A place which has a clean atmosphere (dust and corrosive gas not present)
(4) A place with a minimum of vibration
(5) A place where daily variation in temperature is minimum
4.2 Selection of gas sampling location
A place which satisfies the following conditions should be selected.
(1) A typical place where the gases to be analyzed exist
(2) Where the gases always flow without stagnation
(3) A place easy of access for maintenance and inspection
(4) Where the gases respond quickly to a change in the process operating conditions
(5) Where variation in pressure, temperature, etc. is minimum
– 2 –
4.3 Installation work
For installation of the analyzer locker and the extractor, follow the piping instructions in Fig. 4-1 and the
separately issued approval drawings (outline diagrams, sampling system diagram).
(1) Countermeasures for cold climate
(a) Freeze prevention of gas piping
(b) Freeze prevention of drain pot
(c) Freeze prevention of bypass and drain pipes
(2) Countermeasurement for vibration
When installing in a place where vibration is considerable, the locker should be floated on antivibration
rubber pads.
4.4 Connection of cables
Caution
• Request an installation company or your dealer to carry out wiring.
If wiring is incomplete, shock hazard or injury may be caused.
• Class D grounding construction is mandatory. Otherwise, shock hazard may be caused.
<Caution for wiring company>
For preventing shock hazard, fire and injury, be sure to observe the following.
• Before wiring, be sure to turn off the primary power supply. If this is neglected, you may receive and
electric shock.
• For grounding, use a 600 V-IV wire having diameter of 2 mm2 or more and an adequate dielectric
strength.
• Connect the power supply which meets the rating of product. Connection of other power supply may
cause a fire.
• Select the diameter of input and output wires, which matches the rated current of gas analyzer.
• Be sure to use solderless terminals for connection to the input and output terminal block.
• Use the terminal block for branching the output wire.
• Be sure to fix the input and output wires onto the floor, wall surface, etc. and use a protective device for
wires.
The lead-in for AC power cables and outlet for signal wires are provided at the bottom of the analyzer or else
at the specified place. Connect AC power cables and output signal wires according to the separately issued
wiring diagrams.
Note: Avoid connecting the analyzer power supply near devices such as high-frequency heating fur-
nace or electric welder which greatly disturb the power waveform, and avoid sharing the same
power lines with such devices. Class D grounding construction (100W ground resistance) is
required.
4.5 Connection of pipes (refer to piping instructions in Fig. 4-1 and separately issued approval
drawings)
(1) Connect gas pipe between the gas extractor and the analyzer inlet (sample gas inlet). Use a joint, etc.
for ø10/ø8 Teflon pipe when connecting to ensure there will be no leakage.
(2) Additionally tighten the joint section if necessary
– 3 –
(Note 2)
Sampling
pipe
Fule
(Note 1)
300 or
more
Mating flange for
*
installing extractor
JIS 5K 65A FF
Teflon pipe φ10/φ8 or tube trace
(heating pipe) SE-10C1-56-1-PVC-M
or equivalent.
Outer sheath for Teflon pipe ø10/ø8 is
PVC and bundle outer sheath is ø33.
For pipe end processing, refer to Section 12.
Gas extractor
ZBAK
Note)
Vertical
Horizontal
installation
Heater power supply
100V AC
(Note 7)
Gas
conditioner
300
Leave 300mm space for inspection
and exchange of filter.
Radius 300mm
or more
* Supporting wire
Power connection kit
TFC-3HPT-10JM (Note 6)
Gas outlet facing downward (or horizontal)
Use termination kit TFC-7HPT-10JM (Note 6) or
caulk with silicone bolding agent, etc. after
insulation of heater wire (for indoor installation).
Gradient of 15˚
or more (Note 4)
* Support
(Note 3)
Peel off covering
by about 2m.
(φ10/φ8 teflon tube
inside heating pipe)
*
Direct lead-in
Gas
conditioner
(in panel)
(Note 7)
Gas analyzer
60 × 120 square
hole for wiring
Drain
Sample tube
Filter
Drain
(Note 5)
Outside exhaust
*Exhaust
+ Drain
Drain
* Drain port (Note 8)
The part marked by the asterisk is not supplied.
Front-view diagram
Fig. 4-1 Piping procedure
Note 1) To prevent aspiration of leaked air
Note 2) Install so that pipe end comes to nearly center of flue and is at right angle to the gas flow.
Note 3) Peel off heating pipe by about 2m in order to air-cool measured gas.
Note 4) Provide an inclination of 15° or more on the gas pipe so that drain will not accumulate in the event
of power failure, etc.
Note 5) Exhaust and drain share the same output. In the case of indoor installation, provide a drain pot
and carry out drain separation, and exhaust air outside (pipe inner diameter should be ø8 or
more).
Note 6) Use this when utilizing a heating pipe. (Maker : Fujikin, Japan)
Note 7) The gas pipe (ø10/ø8 teflon tube) should be inserted directly into the gas conditioner.
Note 8) In outdoor application or in a cold district, protect the drain pot and pipes with a heat insulating
material, etc. to prevent drain from freezing in winter.
– 4 –
5. DESCRIPTION OF EACH PART
Please refer to Chapter 14 specification attached at the end of the manual.
6. PREPARATION FOR OPERATION
6.1 Injection of clean water
Inject clean water through the filter or air aspiration port until it overflows from the gas conditioner.
6.2 Supply of external power
Supply external power to the analyzer. And check the connections with output signal wire, etc. The exter-
nal power supply should be.........
100V±10% AC,
50/60 Hz ±1%,
with power consumption of 0.9kVA max. (excluding heating pipe).
Check with reference to the separately issued approval diagrams.
6.3 Check of sample piping, exhaust piping, etc.
Check the connection of the sample piping and if necessary, provide exhaust piping + drain piping (Pipes
with inner diameter of ø8 or more for both). When sample will be dispersed upward, then branch and waterseal the exhaust pipe for the purpose of drain separation. Be sure to disperse the exhaust into the atmosphere.
Make checks with reference to the piping instructions in Fig. 4-1 and the separately issued gas analyzer
diagram.
– 5 –
6.4 Airtightness test
(1) Piping inside panel
Since airtightness is confirmed during tests before shipment, an Airtightness test during trial run is
usually unnecessary. When a long time has passed after shipment, then carry out the following procedure.
(a) Close the drain port.
(b) Connect standard gas to the sample gas inlet.
(c) Connect the transparent tube of the conditioner air suction port (see Fig. 10-1) vertically (in place
of a manometer).
(d) Flow standard gas gradually, and after reaching a pressure of about 1961Pa, close the needle valve
of the pressure regulator.
(e) Check the water level at the air suction port of the conditioner, and if the drop in the level in less
than 147Pa/min, then the error due to insufficient airtightness is negligible.
(f) If a leak is present when measuring a harmful gas, make a check by applying soapy water to the
normal pressure section while aspirating outside air.
(2) Piping outside panel
Thoroughly check the tightened condition of pipe joints. If necessary, apply pressure from the extractor outlet side and make a test as in the preceding item (1).
(3) If the airtightness is insufficient, make a test on each section, find the faulty location and make it
completely airtight. If the faulty location is before the aspirator, then air enters the gas pipe midway to
cause a drop in the indication.
6.5 Setting of temperature inside locker
Turn on power supply to a space heater depending on the ambient temperature. Ventilation fan should
always be turned ON.
6.6 Warm-up time
Turn ON the auto breaker.
(1) Gas extractor
Turn ON the power switch and warm up the extractor for at least 1 hour.
(2) Heating pipe (option)
Turn ON the power supply auto breaker of heating pipe and warm up the pipe for at least 1 hour.
(3) Electronic gas cooler
Turn ON the power switch and warm up for at least 10 minutes.
(4) NO2/NO converter (option)
Turn ON the switch, set the temperature regulator at 220°C, and warm up for about 30 minutes until
indication of the temperature reaches 220±2°C. 200°C for a NO/CO (+ O2) analyzer
(5) Analyzer
Turn ON the power switch and carry out warm-up.
Infrared gas analyzer: about 8 hours
Zirconia O2 sensor: about 30 minuets
– 6 –
7. INDICATION/OPERATION PANEL
7.1 Name and description of each component of indication/operation panel
3 Unit indication lamp
4 Day indication
2 Main indication
1 Component indication
NO
SU TU TH SA
X
Vol%
ppm
MOWE FR
RANCE
5 Sub indication
6 Range changeover switch
7 Function indicator lamp
8 Function key
9 Component selector key
10 Digit shift key
11 Numeric input key
SO
2
O
2
FUNC COMP ENT ZERO SPAN CAL
Vol%
ppm
Vol%
HOLD
(Three component of NOx, SO
RANCE
RANCE
AUTO SALHEAS CAL SET SET RANCE
15 Calibration start key
14 Span calibration key
13 Zero calibration key
12 ENT key
2
and O2 are indication in this figure.)
Part Name Description
q Component indication Indicates kind of gas measured.
w Main indication Indicates measured concentration. Also indicates various set-points for alarm function, auto
calibration function (option), etc.
e Unit indication lamp Indicates units of measured gas concentration.
r Day indication
Indicates current day or day of starting by means of bar in auto calibration (option) setting mode.
Indication SU MO TU WE TH FR SA
Day Sun. Mon. Tue. Wed. Thu. Fri. Sat.
t Sub indication Indicates measuring range, error code, various set points, etc.
y Range changeover key Used when changing the range. High range is set when pressing
pressing
.
and low range is set when
u Function indicator lamp Relevant lamp lights up when following functions are set.
MEAS: Lights up in measuring status.
CAL SET: Flashes in calibration concentration setting mode.
ALM SET: Flashes in alarm setting mode.
HOLD: Flashes in hold setting mode or lights steadily while hold function is activated.
RMT RANGE: Flashes in remote range setting mode or light steadily while remote range function is activated.
AUTO CAL: Flashes in auto calibration setting mode or lights steadily while auto calibration function is
activated.
i Function key Setting mode is changed at each press of this key (Refer to Section 5).
o Component selector key Set component is changed for each setting mode.
!0 Digit shift key Shift is made from highest toward lowest digit at each press of this key.
!1 Numeric input key Selected digit is incremented at each press of this key.
!2 ENT key By pressing this key after setting, the set contents are memorized and becomes valid.
!3 Zero calibration key Used for zero point calibration. (Lamp flashes in zero calibration mode.)
!4 Span calibration key Used for span calibration (Lamp flashes in span calibration mode.)
!5 Calibration start key
Start key for manual calibration. Zero is calibrated by pressing ZERO and CAL keys.
Span is calibrated by pressing SPAN and CAL keys. (CAL lamp lights steadily during calibration).
– 7 –
7.2 Function and indication of indication/operation panel
This panel consists of the following functions.
Key Function Main indication Sub indication Function indication lamp
▲
FUNC Measuring mode Measuring value Range MEAS lamp lights
Setting mode
FUNC Calib.conc.setting Calb.conc. Range CAL SET lamp lights
FUNC Alarm setting (option) Alarm value ALM SET lamp flickers*
FUNC Hold setting ON or OFF HOLD lamp flicker
FUNC Remote range setting (option) ON or OFF RMT RANGE lamp flickers*
FUNC Current time setting Hr.min. Day Auto CAL lamp flickers
FUNC Auto clib.start time setting HR.min. Day AUTO CAL lamp flickers
FUNC Auto calib.cycle setting Time AUTO CAL lamp flickers
FUNC Calib. gas flow time setting Time AUTO CAL lamp flickers*
FUNC Calib. gas flow time setting Mode No. AUTO CAL lamp flickers*
FUNC Auto calib.changeover ON or OFF AUTO CAL lamp flickers
FUNC Key lock changeover ON or OFF *
ZERO Zero calibration Measured value Range Zero key indication flickers
ZERO Span calibration Measured value Range Span key indication flickers
Auto calibration (option)
• When the setting mode is assumed, the analog output signal is held at the value just before entering this mode.
• When optional functions are not provided, the contents of these functions are not indicated.
* Refer to the instruction manual of the infrared gas analyzer for the items marked by the asterisks.
– 8 –
7.3 General operation of indication/operation panel
The measuring mode is assumed when
power is turned ON. The gas concentration appears on the main indication, while
the range being used appears on the sub indication.
Gas concentration
indication
Advice on Operation
NO
Range
indication
✩When selecting the range
In the setting status, as shown in the figure
at the right, the high range is selected when
key is pressed, while the low range is
selected when key is pressed.
✩When selecting the gas component
In the setting status, as shown in the figure
at the right, the gas component can be set
by pressing COMP key.
Example: When COMP key is pressed
while the 1st component is flashing, the flashing moves to the
2nd component (figure at right).
The setting for the 2nd component is now changeable.
* The 1 component type analyzer is not pro-
vided with COMP key.
Hige rang is selected
when key is pressed
Low rang is selected
when key is pressed
1st component
2rd component
3rd component
COMP ENT ZERO SPAN CAL
Pressing changes the settable gas component.
✩For releasing zero or span
If a mistake has been made in zero or span
calibration, then perform a reset in the following way.
The figure at the right shows an example.
If SPAN key has been pressed mistakenly
instead of ZERO key, then press SPAN
key again. Calibration is released.
If ZERO key has been pressed mistakenly instead of SPAN key, the press
ZERO key again.
Calibration is released.
– 9 –
ZERO SPAN
Pressed wrongly.
ZERO SPAN
The lamp blinks.
ZERO SPAN
Press again to extinguish the lamp.
Thus reset. Press the key afresh.
ZERO
8. CALIBRATION
Danger
• When handling standard gas such as calibration gas, read the instruction manual for the standard gas for
correct handling. Special care should be taken when handling hazardous gas such as CO gas and the like
to prevent poisoning.
8.1 Kinds of standard gas
8.1.1 When not using zirconia O2 sensor
(1) Zero gas: N2 or atmospheric air/instrument air depending on specification (when without verifi-
cation stipulated in the laws for measurement and weighing)
(2) Span gas: Gas of 90% or more full scale for each component, remainder is N2 (span gas for low
range will be delivered unless otherwise specified)
8.1.2 When using zirconia O2 sensor
(1) Zero gas: Air (Span gas of the O2 analyzer in the laws for measurement and weighing).
(2) Span gas: 1 to 2% O2, remainder is N2. (Zero gas of the O2 analyzer in the laws for measurement
and weighing).
Gas of 90% or more full scale for other than zirconia O2 sensor, remainder is N2.
Note: For separately calibrating the low and high ranges of the zirconia O2 sensor, supply 9 to
10% O2 and the remainder N2 for the low range (10%) and use air for the high range
(25%).
8.2 Preparation of standard gas
The standard gas to be used for calibration is delivered in a separate package from the locker.
Check the kind of standard gas to be used according to the sampling system diagram, and set it at the
prescribed location.
Before starting calibration, attach a pressure regulator to the standard gas.
8.2.1 How to mount pressure regulator for standard gas cylinder
(1) Before mounting a pressure regulator to the gas cylinder, clean the gas cylinder adapter. Entry of
dust into the pressure regulator may result in gas leaks.
(2) If packing is not inserted in the mounting nut for the cylinder or it is damaged, replace it with
supplied spare one.
(3) Use a spanner of a proper size, fasten the cylinder mounting nut to the gas cylinder. Mount
supplied joint to the outlet according to Item “Sampling system block diagram”.
(4) Loosen the pressure controls and then tighten the outlet controls.
(5) Open a valve of the gas cylinder, and the pressure gauge on the high pressure side indicates a
pressure of the gas cylinder by flowing gas into the pressure regulator.
(6) Turn the pressure controls clockwise to increase the secondary pressure; adjust the pressure con-
trols so that a pressure gauge on the low pressure side reads 30 kPa.
(7) Open the outlet controls to release gas.
– 10 –
Pressure gauge on
low pressure side
Pressure gauge on
Adapter
high pressure side
Pressure controls
Packing
Cylinder mounting nut
Output handle
Pressure regulator
Cylinder
R1/4 joint
Fig. 8-1 Pressure regulation for standard gas cylinder
– 11 –
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