Riken Keiki RX-415 User manual

PTOE‑0281
Released: SEP/15/2009
RIKEN PORTABLE HC/O2 DETECTOR
MODEL ＲＸ−４１５
OPERATION MANUAL
(PT0-028)
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Precautioninoperation
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  
・Afterreadingthismanualwell,starttooperatethisinstrument. 
・Keep this manual where to carry out easily 
・When take out this manual by use ofconstruction work, be sure to put it
where it was. 
・Do not use this instrument for no other than given purpose. 
・When operate this instrument without using this manual or repair it by use of
no other parts than the genuine one, the safety and quality of products could
not be guaranteed. When any accident should take place by those irregular

method, we cannot assume the responsibility for it. 
2-7-6 Azusawa, Itabashi-ku, Tokyo, 174-8744, Japan
Phone : [phone]
Fax : [phone]
E-mail : [e-mail]
Web site : http://www.rikenkeiki.co.jp/english/

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1
In the beginning
It is of our great pleasure to purchase Riken portable HC/O2 gas indicator model RX-415 this
time. This instrument is an explosion-proof type portable gas indicator which is designed to
measure the presence of crude vapors in an inert gas or in air such as HC gas, vapors and
methane gas and O2.
This instruction manual is a guide book for operation of Riken portable HC/O2 gas indicator
model RX-415. It is kindly requested to read and understand this content by experienced users
as well as beginners. The following headline shall be shown to carry out the safety and effective
work in this instruction manual.

Model RX-415 is approved by certificate number:
Baseefa 05ATEX0101
Danger
This means that it gives the serious harm to the human life, body or material directly such as
touching high voltage.
Warning
This means that it gives the serious harm to the human body or material if do not perform the
operation according to the instruction manual.
Caution
This means that it gives the slight harm to the human body or material if do not perform the
operation according to the instruction manual.
＊Note
This means the advice in the operation.
Model RX-415 consists of two type according to the kind of gases below ;
For HC gas use : Model RX-415 (TYPE HC)
HC : 0-100%LEL/0-100vol%
O2 : 0-25vol%
For CH4 gas use : Model RX-415 (TYPE CH4)
CH4 : 0-100%LEL/0-100vol%
O2 : 0-25vol%

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2
Contents
 Page
１．Caution in operation (for your safety)・・・・ 3
２．Name of each part・・・・・・・・・・・・・・・・・・ 4
３．Operation
３−１．Check item before operation・・・・・・・・・・・・・・・ 6
３−２．Preparation・・・・・・・・・・・・・・・・・・・・・・ 6
３−３．Start-up procedure・・・・・・・・・・・・・・・・・・・ 8
３−４．Check of the flowmonitor・・・・・・・・・・・・・・・・ 9
３−５．Zero adjustment・・・・・・・・・・・・・・・・・・・・ 9
３−６．Measurement・・・・・・・・・・・・・・・・・・・・・ 10
３−７．Stop of pump operation・・・・・・・・・・・・・・・・・ 12
３−８．Measurement completion・・・・・・・・・・・・・・・・ 13
４．Alarm function
４−１．Kind of alarm and alarm function・・・・・・・・・・・・ 14
４−２．Countermeasure at alarm ・・・・・・・・・・・・・・・ 15
５．Maintenance check
５−１．Battery replacement・・・・・・・・・・・・・・・・・・ 16
５−２．Gas calibration・・・・・・・・・・・・・・・・・・・・・ 17
５−３．Filter replacement・・・・・・・・・・・・・・・・・・・ 22
５−４．O2 sensor replacement・・・・・・・・・・・・・・・・・ 23
５−５．Daily check and regular maintenance check ・・・・・・・ 24
５−６．Replacement of parts・・・・・・・・・・・・・・・・・・ 24
５−７．Storage and disposal
when the instrument is not used for a long time・・・・・・24
６．Scrap of instrument・・・・・・・・・・・・・・・・・ 25
７．Troubleshooting・・・・・・・・・・・・・・・・・・・ 26
８．Definition of words・・・・・・・・・・・・・・・・・・ 27
９．Specifications
９−１．Specifications・・・・・・・・・・・・・・・・・・・・・・28
９−２．Accessories (Common for HC and CH4)・・・・・・・・・・30
１０．Detection principle
１０−１．NDIR method (Non-Dispersive Infrared)・・・・・・・・ 31
１０−２．GALVANIC CELL method・・・・・・・・・・・・・・・31

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3
1.Cautioninoperation(foryoursafety)
Keep the following items below to maintain the function of instrument and for safety.
Warning
・Do not modify or alter the circuit or structure etc.
After modifying and altering the instrument, the function can not be maintained
any longer.
・As this is explosion-proof typeinstrument, make the battery replacement at
non-hazardous-zone. The replacement at hazardous zone will be beyond the
scope of explosion-proof concept.
・As this is explosion-proof type instrument, besure to operate with carrying case on.
Warning
・Sensor life can be excessively reduced under the condition where acid gas and
solvent gas are existing. In this case, make measurement as quickly as possible.
After measurement, make sensor cleaning by introducing fresh air.
Caution
・Do not fall or crush it.
As this is a fine instrument, the function may not be maintained if high impulse or
shock is given.
・Do not splash water directly.
As this is not drip-proof structure, it will be a cause for trouble if water is splashed
directly.
・Do not give the electrical noise during operation by strong walkie-talkie wave etc.
When give the electrical noise to the instrument, it will be a cause to damage the
instrument.
・When the temperature in air is changed drastically, it may affect the reading of
the instrument.
・When it is in dew or condensed, the normal measurement can not be carried out.
・For internal filter and filter tube, be sureto operate it with them on by all means.
＊Note
・When measure the gas contains water, suck it afterremoving water.
・When measure high temperature gas, make measurement after the instrument
accustom itself to its temperature.

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4
2.Nameof each part
①Power/Enter switch
This is used for the confirmation of power ON, OFF/input.
②PUMP/(+) switch
This is used for pump Switch ON/OFF and to increase the input value.
③ZERO/(-) switch
This is used for zero adjustment and decrease the input value.
④PEAK switch
This is used when desired to show the peak value.
⑤BATT/ESC switch
This is used when desired to show the battery voltage and cancel the input.
⑥Gas outlet
This is the outlet to exhaust sample gas out.
⑦Calibration gas name plate
This shows the calibration gas name.
⑧Display unit (LCD display with back light)
This displays gas concentration.
⑨Alarm lamp
This flickers and lights on at trouble alarm time.
⑩Photo sensor window
This is for automatic back-lights of display unit by detecting that it gets dark around.
⑪Gas inlet
This is a measuring gas inlet.
⑤④③②⑨ ⑩①
 ⑦⑧
⑥ ⑪

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5

⑬



⑫Carrying case
⑬Junction tube (20cm)
⑭Gas sampling probe + Sampling tube (1m)
⑮Filter tube with the flowmonitor
⑭
⑫
⑬
⑮

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6
3.Operation
３−１．Check item before operation
Instrument :
・Check that there is no damage on the display unit.
Filter tube with the flowmonitor :
・Check the dirt of cotton and when it gets dirty, replace the cotton with new one. (See 5-3)
・
When the water drops are deposited, drain it out.
・
Check that there is no crack or damage.
・
Check that there is no looseness on the nipple mounting.
Gas sampling tube :
・Check that there is no break or twist of it.
３−2．Preparation
(1) Mount the battery into the instrument. (See 5-1)
(2) Put the instrument into the carrying case.
(3) Connect the junction tube, the filter tube with the flowmonitor and the gas sampling tube with
the gas inlet of the instrument in turn.
As there are several types of head tubes for the instrument, use them according to each
environment.
Standard specification Spiral sampling tube 1m + Gas sampling tube
Optional specification Gas sampling tube 30m Black (with stick probe or float probe)
Gas sampling tube 20m Black (with stick probe or float probe)
Gas sampling tube 10m Black (with stick probe or float probe)
Gas sampling tube 29m Orange + Junction tube 1m Orange
(with stick probe or float probe)
・Connection between gas sampling junction tube and model RX-415.
By holding knurling part with fingers, pull it to the arrow mark. ⇒
Plug in to the arrow mark ←with its condition. Release the fingers holding the knurling part and
press in. Then, locked after ticking sound.
Knurling part Junction tube
Gas inlet
Junction tube
Filter tube with the flowmonitor
Spiral tube
Gas sampling tube

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7
・Connection between gas sampling junction tube and sampling tube (Optional specification).
By holding the socket of gas sampling junction tube and the plug of sampling tube by fingers
and plug in to the arrow mark until it gets a ticking sound.
Warning
・As this is used in dangerous zone, be sure to use it with carrying case.
Caution
・Be sure to plug in the gas sampling tube and junction tube.
If not surely connected, the accurate measurement cannot be carried out.
・Be sure to mount the filter tube with the flowmonitor.
If measure without filter, it will be a cause of trouble by sucking dust, water
and oil etc.
Sampling tube
Plug Socket
Gas sampling relay tube

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8
３−３．Start-up procedure
Hold pressing power switch for 5 seconds and the power will turn on. Via battery check,
filter probe connection check and sensor connection check, the gas detection will start.
The sequence performance until the gas detection starts is as follows :
Hold pressing power switch for 5 seconds
↓
 １００．０ｖｏｌ％ ２５．０％ At pump connection fail.
 Approx. 5 sec. ↓①
ＢＡＴＴ．：Ｅ −−−｜−− Ｆ At battery power shortage.
Approx. 5 sec. ↓②
  ＰＲＥＰＡＲＡＴＩＯＮ
Approx. 5 sec. ↓
ＰＲＯＢＥ／ＦＩＬＴＥＲ ＯＫ？
After checking tube/filter, press ＥＮＴＥＲ .
↓
  ＳＥＮＳＯＲ ＣＨＥＣＫ At sensor connection fail.
Approx. 5 sec. ↓③
ＳＥＮＳＯＲ ＣＨＥＣＫ ＯＫ
Approx. 5 sec. ↓
ＷＡＲＭＩＮＧ ＵＰ ３０ｓｅｃ
30 sec. ↓
 Countdown
  ＳＴＡＮＤ ＢＹ ＯＫ
Approx. 5 sec. ↓
   ０．０％ＬＥＬ ２０．９％
Detection starts.
①Display, performance at pump connection failure. (See 3.)
ＦＡＩＬＰＵＭＰ （Lamp:Light-on, Buzzer :Continuous）
②Display, performance at power voltage shortage. (See 3. and 5-1)
ＲＥＰＬＡＣＥ ＢＡＴＴＥＲＹ （Lamp: Light-on, Buzzer: Continuous）
③Display, performance at sensor connection failure. (See 3.)
In case of HC sensor connection failure
ＦＡＩＬ ＳＥＮＳＯＲ  ＨＣ （Lamp:Light-on, Buzzer:Continuous）
In case of O2 sensor connection failure
ＦＡＩＬ ＳＥＮＳＯＲ  Ｏ２ （Lamp:Light-on, Buzzer:Continuous）
In case of HC sensor/O2 sensor connection failure
  ＦＡＩＬ  ＳＥＮＳＯＲ  （Lamp :Light-on, Buzzer :Continuous）
＊Note
At power on, check that
the buzzer and pump
sound.

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9
３−４．Check of the flowmonitor
When turn on power, the pump starts working. Check that it works properly by the flowmonitor
(float) of filter tube with the flowmonitor.
When sucking properly (Can see the float)
Not sucking properly (Cannot see the float)
３−５．Zero adjustment
Make zero adjustment by removing the gas sampling tube.After the detection starts, see the
flowmonitor and check that the air is sucked properly. Then, check that the reading gets stable
and make zero adjustment by sucking the fresh air into instrument.
The operation procedure is shown below.
   ０．０％ＬＥＬ ２０．９％ （Gas display）
 ↓
 ＨＯＬＤ ＺＥＲＯ ＫＥＹ Holdpressing ＺＥＲＯ forapprox. 3sec.
 ↓
ＡＰＰＬＹ ＦＲＥＳＨ ＡＩＲ Afterchecking that fresh airis sucked intoinstrument
 ↓ and then, press ＥＮＴＥＲ switch.
 ＡＤＪＵＳＴＩＮＧ ＺＥＲＯ
Zero calibration failure
Approx. 5 sec. ↓①
ＺＥＲＯＳＥＴＯＫ
Approx. 5 sec. ↓
   ０．０％ＬＥＬ ２０．９％ （Gas display）
Float
Float

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10
①Display, performance at zero calibration failure (See 3.)
In case of HC zero cal. failure
ＦＡＩＬ ＺＥＲＯ ＨＣ／  
In case of O2 zero cal. failure
ＦＡＩＬ ＺＥＲＯ   ／Ｏ２
In case of HC/O2 zero cal. failure
ＦＡＩＬ ＺＥＲＯ ＨＣ／Ｏ２
Caution
When make zero adjustment, do it after having fresh air sucked into instrument
for over 1 minute.
If zero point is adjusted under presence of gas, the accurate detection can not be
carried out, and oxygen deficiency accident may be occurred.
＊Note
・When desired to cancel the pre-operation, press ESC switch but after
confirmed, it can not be cancelled.
３−６．Measurement
(1) Move the sampling tube end towards measuring point and draw gas.
-Take care not to bend and twist sampling tube.
-Check that it is drawn properly by the flowmonitor.
-Set the sampling tube end at the point of measurement, take into account the length of
sampling tube, and read out the gas concentration after getting stable of gas reading.
Danger
・There may be the oxygen deficiency at gas outlet point due to the inert gas.
Do not breathe at all.
・There may be the exhaust of high density gas (Above LEL).
Do not approach the fire to it.

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11
Warning
・When the temperature is drastically changed at next detection point, in order to
make accurate measurement, wait until the instrument accustom itself to its
temperature (approx 10 min.). Then, start measurement after air calibration.
Warning
・When measure O2 in inert gas, confirm that CO2 density of sucked air is under
15%. If over 15% of CO2 is introduced, that may decrease the sensor life.
(See 8. Caution in operation)
Caution
・Do not let water or oil sucked into instrument. If it should be sucked, the pump
or sensor shall be failed.
・When measure, check the running sound of pump and the flowmonitors.
It cannot be measured at stop of pump operation.
・When the measuring gas is except calibration gas, the display reading will show
at slightly high or slightly low side position.
・Do not block the gas outlet because the display reading may show the slightly
high position.
＊Note
・When suck high density gas above LEL, the hang-up phenomenon takes place
from the adsorption of it to the gas sampling tube and filter tube.
①
When use the range of vol%, use it as it is.
②
When make zero adjustment, remove the gas sampling tube and let fresh
air sucked into instrument.
③
When measure by %LELrange, clean the gas sampling tube by air and try
to measure after the display reading goes down zero.
(2) Battery voltage
By pressing BATT switch while in operation, the battery voltage at present can be confirmed.
The battery voltage will return to the gas concentration reading if there is no input of this
switch “ON” for 20 seconds.
   ０．０％ＬＥＬ ２０．９％ （Gas display）
ＢＡＴＴ
ＢＡＴＴ．：Ｅ −−−｜−− Ｆ （Battery voltage display）
ＢＡＴＴ

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12
(3) Read-out of peak value
When press PEAK switch in operation, this shows the peak value (Max point of reading for HC,
Minimum point of reading for O2）from the power switch “ON” up to now.
Then press PEAK switch again, the peak model is cancelled and returns to the measurement
mode. Then if there is no input of peak for about 20 seconds, this shall return to the
measurement mode. When hold pressing ESC switch for 3 seconds in the peak display, the
peak value will be cleared.
   ０．０％ＬＥＬ ２０．９％ （Gas density display）
ＰＥＡＫ ↓
Ｐ ８０．０％ＬＥＬ １９．５％ （Peak value display）
ＥＳＣ．3 sec.
ＰＥＡＫ
Ｐ  ０．０％ＬＥＬ ２０．９％ (Peakvaluecleared)
 ＰＥＡＫ （Reading value when peak value cleared）
   ０．０％ＬＥＬ ２０．９％ （Gas density display）
３−７．Stop of pump operation
When transfer the sampling point or stop measurement temporarily, it can stop the running of
pump only.
When stop pump running, the battery consumption can be cut by about 40% as compared with
the pump running time.All except pump work and then, no warming-up time is required if
re-operate the pump.
＊Note
・When do not measure for sometime, turn off the power.
As all except pump work, the battery will be consumed if leave the pump operation
stopped.
(1) Pump running display
＜Pump running on＞
This displays gas reading while in pump running.
   ０．０％ＬＥＬ ２０．９％ （Pump running）
＜
Pump power off＞
The following message shows while in pump work stopping.
 ＰＵＭＰ ＰＯＷＥＲ ＯＦＦ （Pump stop operation）
(2) Operating procedure
Pump : Running on →stop
   ０．０％ＬＥＬ ２０．９％ （Pump running）


13
↓
 ＨＯＬＤ ＰＵＭＰ ＫＥＹ Press ＰＵＭＰ forabout3sec.
↓
ＰＵＭＰ ＰＯＷＥＲ ＯＦＦ (Pump stop operation)
Release PUMP switch after pump off.
Pump：Stop →Operation
 ＰＵＭＰ ＰＯＷＥＲ ＯＦＦ Pump power off
↓
 ＨＯＬＤ ＰＵＭＰ ＫＥＹ Press ＰＵＭＰ forabout3sec.
↓
ＰＵＭＰ ＰＯＷＥＲ ＯＮ Display for about 5 sec. Release PUMP switch
↓  after pump running.
   ０．０％ＬＥＬ ２０．９％ （Pump running）
３−８．Measurement completion
(1) Treatment after measurement
Roll up the sampling tube in a round bundle so that any bent or twist can not be made carefully.
Make air cleaning for minimum 5 seconds until the reading comes nearby to zero point under
condition that the sampling tube is connected with instrument by sucking fresh air.
(2) Power OFF
While pressing the power switch for about 5 seconds, the power will be off.
While pressing the power switch off, the buzzer will sound for about 15 times.
Caution
・Do not forget to do air cleaning.
When neglect the air cleaning, the following will take place and will be a cause
for trouble.
①
If water, oil and mist are left and condensed in dust, much of water and oil
shall be sucked into instrument at the next measurement time.
②As HC vapors may be absorbed completely, there will be a trouble for next
time measurement.


14
4.Alarmfunction
４−１．Kind of alarm and alarm function
Trouble alarm is provided for this instrument.
Each alarm is provided with buzzer, lamp and display.
Trouble alarm and alarm pattern
Lamp Buzzer
Power ON
Systemerror ON Continuous " SYSTEM ERROR "
Batterypowershortage ON Continuous "REPLACE BATTERY"
Sensor disconnection ON Continuous " FAILSENSOR " " FAILSENSOR HC "
" FAILSENSOR O2"
Pump disconnection ON Continuous " FAILPUMP "
Measurement
Low batterywarning Flicker Intermittent “B”flickeratleftend
Low battery alarm ON Continuous "REPLACE BATTERY"
ZERO cal. failure OFF No sound " FAILZERO HC/ " " FAILZERO /O2"
" FAIL ZERO HC/O2"
SPAN failure OFF No sound " FAIL SPAN HC/ " " FAILSPAN /O2"
" FAILSPAN HC/O2 "


15
４−２．Countermeasure at alarm
(1)System error (“SYSTEM ERROR”)
When receive an excessive noise, this error may appear.
(2)When the low battery alarm is given, replace 4 pcs of batteries with new ones according to the
procedure of “5-1. Battery replacement.”
(3)Sensor connection error
When give an excessive shock or impulse to the instrument such as dropping or throwing etc.
and use for a long period, such display may appear.
Carry out the daily check or regular check (See 5. Maintenance check).
(4)Pump connection error (“FAIL PUMP”)
When give an excessive shock or impulse to the instrument such as dropping or throwing etc.
and use for a long period, such display may appear.
Carry out the daily check or regular check (See 5. Maintenance check).
(5)Zero cal. error (“FAILZERO HC/O2”)
Under the condition that zero gas (air) is not sucked correctly or water and oil etc are sucked into
instrument, such display may appear. Check whether there is any damage or any sign of water
or oil etc suction in the sampling tube or filter tube with the flowmonitor etc. If any error could not
be found, let zero gas (air) sucked into instrument correctly and make zero adjustment (See 3-5.
Zero adjustment).
(6)SPAN failure (“FAILSPAN HC/O2”)
Under the condition that zero gas (air) is not sucked correctly or water and oil etc are sucked into
instrument, such display may appear. Check whether there is any damage or any sign of water
or oil etc suction in the sampling tube or filter tube with the flowmonitor etc. If any error could not
be found, let calibration gas sucked into instrument correctly and make span adjustment. (See 5.
Maintenance check).


16
5. Maintenance check
For this correct operation, follow the following procedure.
５−１．Battery replacement

Warning
・Battery replacement shall be done at non-hazardous zone by all means.
・Be sure to use the genuine batteries.
When make battery replacement, replace all 4 pcs batteries with new ones.
(1) Check that the power OFF.
When the power is ON, do it after power OFF.
(2) Remove the carrying case from the instrument.
(3) Open the battery cover by turning the screw on the bottom of instrument counterclockwise
with minus screwdriver or coin etc.
(4) Remove 4 pcs batteries and put the new ones where they were by taking care of polarity.
＊NOTE
When remove battery, remove it from the polarity of (+). When put it, it is easy to
replace the battery from the polarity of (-).
(5) When finish the replacement of batteries, put the battery cover in the reverse way.
Warning
・Tight up the battery cover for sure.
Battery cover
As this is safety instrument. Be sure to make the regular maintenance. If any trouble
should take place, contact the nearest agent or Riken Keiki Co., Ltd.


17
(6) The following battery types are the only battery types that may be used.
1. Duracell Ultra MN1400
2. Panasonic LR14 (G)
3. Toshiba LR14
５−２．Gas calibration
The measuring range of model RX-415 is dual expanded scale of 0-100%LEL and 0-100vol%
for HC, and 0-25vol% for O2. Then, the gas calibration for all ranges is required.
(1) Prepare the calibration gas (both for low density gas and high density gas) and sampling bag.
(2) Remove the filter tube and gas sampling tubes from the instrument.Then, arrange to connect
sampling bag from the gas inlet of instrument.
(3) Turn on the power and make zero adjustment.
(4) Put the calibration gas＊１ sampling bag and make gas calibration in the following procedure.
   ０．０％ＬＥＬ ２０．９％ （Gas density display）
↓
 ＨＯＬＤ ＳＰＡＮ ＫＥＹ Press ＰＵＭＰ and ＺＥＲＯ
↓for 3 sec simultaneously.
  ＡＰＰＬＹ ＧＡＳ ＨＣ Supply cal. gas from the gas
 inlet and press ＥＮＴＥＲ
When stop gas calibration, press ＥＳＣ
ＥＮＴＥＲ   ＥＳＣ
To O2 calibration.
％ＬＥＬ ＡＤＪ＞−／＋ Waituntilgasreadinggetsstable.
When there is almost no difference between gas
display and calibration gas value, it does not need
 gas calibration adjustment.Then press ESC switch
 ＥＳＣand make it end.
To O2 calibration.
％ＬＥＬ ＡＤＪ＞−／＋ Adjustthegas readingtothe calibrationvalue.
 By pressing −, ＋switch, adjust the gas reading to the
 value of canned gas and press ENTER switch.
But when press ENTER without pressing −, ＋switch,
 ①will appear. This means that calibration proceeds without
 setting the calibration gas value.
 When do not make gas calibration, press ESC switch.
Gas cal. error
 ①
＊１：Calibration gas
ｉ−Ｃ
４Ｈ１０
 ７０〜８０％ＬＥＬ

A
i
r
-balance or N2-bal.


18
 ＨＣ ＳＰＡＮ ＳＥＴ ＯＫ Gas calibration is completed.
↓
  ＡＰＰＬＹ ＧＡＳ Ｏ２ Supply calibration gas from the gas inlet.
When perform gas calibration, press ＥＮＴＥＲ.
ＥＳＣ When stop gas calibration, press ＥＳＣ.
Completion of gas cal.
   ０．０％ＬＥＬ ２０．９％ （
Gas density display）
①
Display and function in gas calibration error. (See 3)
ＦＡＩＬ ＳＰＡＮ ＨＣ／  

Danger
・Do not approach the fire at the time of gas calibration at all.
For gas calibration, use the high density gas.
＊Note
・Before gas calibration,confirm that the indication value is “0.0%LEL” after fresh air
is sucked. Be sure to make zero adjustment when the value is not “0.0%LEL”.
End even though “0.0%LEL” is displayed, if it is flickered, zeropoint is deviated.
Make zero adjustment.


19
(5) Put the calibration gas＊２ to sampling bag and make gas calibration in the following procedure.
   ０．０％ＬＥＬ ２０．９％ （Gas density display）
↓
 ＨＯＬＤ ＳＰＡＮ ＫＥＹ Press ＰＵＭＰ and ＺＥＲＯ
↓for 3 sec. simultaneously.
  ＡＰＰＬＹ ＧＡＳ ＨＣ Supply cal. gas from the gas
inlet and press ＥＮＴＥＲ
When stop gas calibration, press ＥＳＣ.
ＥＮＴＥＲ   ＥＳＣ
To O2 calibration.
ｖｏｌ％ ＡＤＪ＞−／＋ Waituntilgasreadinggetsstable.
When there is almost no difference between gas
display and calibration gas value, it does not need
 gas calibration adjustment.Then, press ESC switch
 ＥＳＣand make it end.
To O2 calibration
ｖｏｌ％ ＡＤＪ＞−／＋ Adjustthegas readingtothe calibrationvalue.
 By pressing −, ＋switch, adjust the gas reading to the
 value of canned gas and press ENTER switch.
But when press ENTER without pressing −, ＋switch,
 ①will appear. This means that calibration proceeds without
 setting the calibration gas value.
 When do not make gas calibration, press ESC switch.
Gas cal. error
 ①
 ＨＣ ＳＰＡＮ ＳＥＴ ＯＫ Gas calibration is completed.
↓
  ＡＰＰＬＹ ＧＡＳ Ｏ２ Supply calibration gas from the gas inlet.
When perform gas calibration, press ＥＮＴＥＲ.
ＥＳＣ When stop gas calibration, press ＥＳＣ.
Completion of gas cal.
   ０．０％ＬＥＬ ２０．９％ （
Gas density display）
①
Display and function in gas calibration error.
ＦＡＩＬ ＳＰＡＮ ＨＣ／  
＊２：Calibration gas
ｉ−Ｃ
４Ｈ１０
 ７０〜８０ｖｏｌ％

A
i
r
-balance or N2-bal.