Cosmos XO-326IIsA User manual

Document No.: XO
-
326II
s
T
This instruction manual explains the use of six models listed in the left.
•Keep this instruction manual available for quick reference when needed.
•Read this instruction manual and understand the information thoroughly
before using.

Table of Contents
Included in this Package.........................................................................................................1
1. Introduction.........................................................................................................................2
Explosion-Proof Requirements (Japan)..............................................................................2
Symbols .............................................................................................................................2
Safe Operation...................................................................................................................3
2. Product Layout and Functions............................................................................................4
3. Operating Procedure..........................................................................................................7
Operating Procedure..........................................................................................................7
4. Error Messages................................................................................................................11
5. Replacement of Consumables .........................................................................................12
Replacing Filter Element..................................................................................................12
Remaining Battery Level Alert and Battery Replacement.................................................13
6. Maintenance Check..........................................................................................................15
Daily Check......................................................................................................................15
Periodic Check.................................................................................................................15
Replacement Parts...........................................................................................................15
7. Troubleshooting................................................................................................................16
8. Warranty...........................................................................................................................16
9. Specifications ...................................................................................................................17
10. Detection Principle..........................................................................................................18
11. Glossary..........................................................................................................................18

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－Included in this Package －
The Following items are enclosed in the package. Carefully check all items listed below before use.
Contact your New Cosmos representative if any items are broken or missing.
●Options（sold separately）
Digital Oxygen Indicator
(with oxygen sensor for factory inspection and soft case) 1
Shoulder Strap 1
Oxygen Sensor in a packet 1
FE-2 Replacement Filter Element (2pcs) 1
Size AA alkaline dry cell battery (Made by PANASONIC) 2
Instruction Manual 1
Inspection Report 1
Model Reference
LC-3-5 Extension Sensor Cable 5m
with storage case Use to extend the length of sensor cable.

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1. Introduction
Thank you for purchasing the Oxygen Indicator XO-326IIs series. Please read this instruction
manual thoroughly before using to help prevent gas accidents and to aid in safety inspections and
maintenance.
The Oxygen Indicator measures the concentration of oxygen (O2) during operations in pit, manhole,
septic tank, basement, tank, etc. This Oxygen Indicator prevents accidents from lack of oxygen; the
alarm beeps when the gas concentration reaches the set value.
Read and understand thoroughly this Instruction Manual regardless of your experience with using
the Oxygen Indicators. Do not use this Oxygen Indicator for improper purposes. Do not use this
Oxygen Indicator in undocumented way in this manual.
−Explosion-Proof Requirements (Japan)
Confirm the following explosion-proof requirements.
−Symbols
The following symbols are used for safety purposes:
DANGER Indicates hazardous situation that may result in serious injury or
death, if not avoided.
WARNING Indicates potentially hazardous situation that may result in serious
injury or death, if not avoided.
CAUTION Indicates potentially hazardous situation that may result in minor injury
or physical damage, if not avoided.
Indicates operational advices.
Condiction of Use:
▪Outside of Japan, the Oxygen Indicator should not be used in hazardous locations.
▪Replace batteries in non-hazardous location.
▪Use the Oxygen Indicator in the specified New Cosmos soft case.
▪For comprehensive measures to prevent accidents due to electrostatic charges, the
user should desirably wear anti-static working clothes and conductive footwear
(antistatic working shoes), and the floor should desirably be a conductive work floor with
a leakage resistance of 10M ohms or less.
▪Do not use other than mixed gas between air and combustible gas or vapor and toxic
gas in measuring the oxygen concentration.
NOTE

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−Safe Operation
Be sure to observe the following to use the product safely and properly.
▪
Remove the batteries if the Digital Oxygen Indicator will not be unused for
an extended period of time.
▪Check the battery status periodically (approximately once a month) even if
the Digital Oxygen Indicator remains unused for an extended period of
time. Replace batteries as the leakage of electrode may occur when the
battery level is low.
▪The Digital Oxygen Indicator has explosion-proof structure. To avoid
damaging the explosion-proof performance, never attempt to disassemble,
remodeling, modifying of structure or circuit of the Oxygen Indicator.
▪Since the Oxygen Indicator does not have a drip-proof structure, keep
away from water.
▪Keep the Oxygen Indicator away from heat and humidity. It may affect the
performance.
▪Do not leave or use the Oxygen Indicator in places where the temperature
or humidity fluctuates greatly. It may affect the performance.
▪Keep the Oxygen Indicator away from significant changes in atmospheric
pressure. It may affect the performance.
▪Avoid high mechanical impacts, dropping and throwing the Oxygen
Indicator. It may affect the performance.
▪Incase of dew condensation, conduct an inspection after drying the
Oxygen Indicator completely before use.
▪Do not use other than the specified batteries. It may damage the
explosion-proof structure.
▪Adjust pressure of measured value when detecting at places where the
atmospheric pressure is different from the standard, such as high altitude,
due to the pressure dependence of oxygen sensor.
▪Be careful not to submerge the Oxygen Indicator when using in manhole. It
may cause failure in measurement.
▪The gas sensor contains harmful substances. When disposing of the
sensor, return to New Cosmos Electric or dispose as industrial waste.
▪The batteries life will be shorter when using the Indicator at low
temperature than using at normal temperature due to the battery
characteristics.
▪Keep walkie-talkie away from the Indicator while in use. It may cause the
indicator shakes or alarm errors due to radio wave.
CAUTION
DANGER
▪
If the gas alarm is activated, take all necessary precautions immediately to
prevent lack of oxygen.
WARNING
▪Make sure to turn ON the power in normal atmosphere. Otherwise, it may
not be able to detect gas properly since zero adjustment will start
automatically.
▪Do not block the sampling port. The oxygen cannot be measured properly.
▪Use clean and dry filter elements. If the filter element is dirty or wet, the
oxygen cannot be measured properly.
▪Do not block the buzzer port or the alarm will be hard to hear.
▪The sensor unit is guaranteed for one year from the date of purchase. It is
highly recommended to replace a sensor after one year for proper oxygen
measurement.

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2. Product Layout and Functions
1
2
8
10
5 4
11
9
7
3
12
6
6
XO-326IIsA
XO-326IIsA-V
XO-326IIsB
XO-326IIsB-V XO-326IIsC
XO-326IIsC-V

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No.
Name Functions
1 POWER Switch Turns the power on and off.
2 AIR ADJ. Switch Adjusts the air to 21.0%
3
LCD Display Displays the gas concentration value and other
messages.
(a) Remaining battery level:
High・・・・・・・・Low Replace
(b) Gas concentration and error display
(c) Unit of gas concentration
4 Gas Detection port Detects gas
5 Sensor Unit Store oxygen sensor element
6 Sensor Cable Holder Rewind the cable
7 1m Sensor Cable (spiral cable) Extend the cable to 1 m
(XO-326IIsB, XO-326IIsB-V)
8 5m Sensor Cable Extend the cable to 5 m
(XO-326IIsA, XO-326IIsA-V)
9 10m Sensor Cable Extend the cable to 10 m
(XO-326IIsC, XO-326IIsC-V)
10 Alarm Lamp Flashes when alarming.
11 Buzzer Sound Hole Buzzer sounds.
12 Battery Cover Lid of battery compartment
(a)
(b) (c)

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No.
Name Functions
1 Shoulder strap bracket Fix the shoulder strap
2 Sensor storage Store sensor unit
3 Side pocket Store instruction card
Soft case
1
3
2
For XO-326IIsA
and XO-326IIsA-V
For XO-326IIsB
and XO-326IIsB-V
For XO-326IIsC
and XO-326IIsC-V

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3. Operating Procedure
−Operating Procedure
1. Replace a Sensor
1) Take an oxygen sensor out from a packet.
2) Turn the sensor cap counterclockwise and remove
oxygen sensor from the sensor case..
3) Pinch the oxygen sensor for factory inspection
straight up slowly and pull slowly.
4) Adjust the asymmetric oxygen sensor connector
pins to the socket on sensor board and push to
the sensor base.
▪Be sure to perform a maintenance check before operating detection (see
on page15).
WARNING
Install
batteries
2
STEP
Detect
4
Turn ON
power
Gas
concentration
display
3
Turn OFF
power
5
Replace
sensor
1
▪Replace the attached oxygen sensor for factory inspection to the new
Oxygen Sensor in a packet.
▪It may damage the performance of the Oxygen Indicator if it is not
attached correctly.
CAUTION
Oxygen sensor
Sensor case Sensor cap
Pull up
Oxygen sensor for
factory inspection
WARNING
▪Plug the oxygen sensor connector pins to the socket vertically, to avoid
damaging pins or socket.
Plug the oxygen sensor properly. If the oxygen sensor is plugged in
reverse (eccentrically), the sensor cap cannot be tightened properly
and it may break the oxygen sensor connector pins.
CAUTION

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5) Turn the sensor cap clockwise to attach to
the sensor case.
2. Install Batteries
For the first use, batteries are not installed in the equipment. Insert the provided batteries in
reference to page 12.
3. Turn ON Power
Press [Power Switch] for about 3 seconds. It will display ”on” and countdown of “3, 2, 1“. Then it
will display gas concentration after displaying “alarm set value” and performing “air adjustment”
automatically. Buzzer sounds, alarm lamp and vibration (for vibration specification) will also
activate within 10 seconds.
1) “on” and Countdown “1, 2, 3”
▪Make sure to turn on the power in normal atmosphere. Otherwise, it
may not be able to detect gas properly since zero adjustment will start
automatically.
WARNING
▪During switch operation of the Oxygen Indicator, the backlight of LCD
display lights up automatically for about 5 seconds.
NOTE
Incorrect
*
Oxygen sensor is connected eccentrically.
Adjust two asymmetric pins
Sensor base
Correct
Push
FE-2 Filter Element
O-ring
▪Right after replacing the oxygen sensor, sensor output is not
stabilized. Leave in normal atmosphere for more than 30 minutes
before use.
▪In case FE-2 Filter Element and O-
ring are come off from the sensor
cap, refer to “Replacing Filter Element” on page 12 to attach properly.
CAUTION