Gas Leak Detector
Instruction ManualThis instruction manual covers the three models listed
to the left.
• Keep this manual for easy reference.
• Carefully read this manual prior to use.

XP-702IIIS-ABFET(00)Table of Contents
Package Contents
1. Introduction
Explosion proof Requirements
Symbols Used in this Manual
Safety Precautions
2. Unit Dimensions and Components
3. Operation
Procedure
Display target gas name
Switching target gas (for two-gas detector, XP-702IIIS-A/F)
Silent mode (all operating sounds/gas alarm muted)
Mute/unmute gas alarm audio
Turn backlight onTurn flashlight on
4. Error Codes (error alarms)
5. Consumable Replacement
Filter element replacement
Dust filter replacement
Battery replacement
6. MaintenanceRoutine check
Annual inspection
Consumable parts
Optional items
7. Troubleshooting
8. Warranty
9. Specifications
10. Detection Principle
11. Glossary

1
2
2
3
3
5
8
8
14
15
15
16
16
16
17
18
18
19
20
21
21
22
22
22
24
25
26
28
28

Package Contents
A standard package consists of following items. If any items are missing or damaged,please contact New Cosmos or its authorized representative for replacement.

Item

Qty.

Gas leak detector, with leather case1

Drain filter set (DF-116)

1

Replacement filter element (FE-2)

1

Short probe (AT-2G)
Dust filter (FE-106)

1
1

Hand strap

1

Panasonic alkaline AA battery (LR6)2Instruction manual (this document)

1

Quick start guide1

Inspection certificate

1

Optional gas collector sets (sold separately)
Model

Contents *Gas collectors (AT-5 and AT-6), annealed copper tube
ATS-1
(AT-11), and sampling tube (SH-4-05)
Gas collectors (AT-5 and AT-7A) and expansive probe
ATS-2(RP-4)
Expansive probe (RP-1), flexible adaptor (AT-12),
ATS-3
and sampling tube (SH-4-1)
Gas collector (AT-5), annealed copper tube (AT-11),
ATS-6
sampling tube (SH-4-05), and short probe (AT-2G)* Refer to pages 22 and 23 for details.

-1-1. Introduction
Thank you for purchasing the New Cosmos gas leak detector XP-702IIIS series.
Prior to use, please read this manual to ensure safe and reliable operation, and toprevent gas leak related accidents.
XP-702IIIS-A/F can detect two gases, one at a time. The target gas can be switchedwhen powering-on. Gases include methane, isobutane, refrigerant, etc.
XP-702IIIS-B can detect a single gas. Gases include methane, isobutane, refrigerant,
etc.
Prior to use, check the target gas(es) by referring to the gas name label on the unit.
If gas concentrations reach a preset level, the unit will produce audio-visual alarms, thus
helping prevent a gas leak incident.
Carefully read this manual regardless of your experience with gas detectors. Do not use
the product for other than the intended purpose or in a manner not described in thismanual.

Explosion proof Requirements
Follow the conditions below to comply with the explosion proof requirements.
Explosion proof:

USA/CANADA: Class Ι, Zone 0, AEx ia ΙΙB T3 Ga
Class Ι, Zone 0, Ex ia ΙΙB T3 Ga
USA:Power source:

Class Ι, Division 1, Groups C and D, T3

3.0 VDC (1.5 V battery x 2pcs)

Battery Requirements
Panasonic alkaline AA battery (LR6) x 2pcs
Duracell alkaline AA battery (MN1500) x 2pcs

Varta alkaline AA battery (4106) x 2pcs
Energizer alkaline AA battery (E91) x 2pcs

Precautions for use
・ Do not replace batteries when an explosive atmophere is present.
Ne pas remplacer les accumulateurs si une atmospére explosive peut étre présente.
・ Potential Electrostatic Charging Hazard: Do not remove leather case in ahazardous location.This equipment must be installed in the dedicated leather case with closed
zipper,before entering hazardous locations.
Risque potentiel de charge électrostatique-Ne pas retirez l'étui en cuir avant d'accéder à unendroit à risques Cette équipement doit être installé dans son étui en cuir dédié avec
fermeture éclair,complètement fermé,avant d'entrer dans des zones à risques.
・ Do not carry loose batteries when an explosive atmosphere is present.
・ Only use the detector while installed in its dedicated leather case.
・ Avoid strong mechanical shock, impact, or vibration to the detector, especially its cap.
Dropping or bumping the detector may cause the cap to become a source of ignition or fire.
・ Before opening any parts of the gas detector, ensure no explosive atmosphere is present.
・ To prevent accidents from electrostatic charges, wear anti-static clothing, conductive footwear(antistatic work shoes), and have a conductive work floor (resistance: 10M Ohm or less).

-2-

1. Introduction

Symbols Used in this ManualThis manual uses Danger, Warning, Caution and Note symbols to draw attention toprocedures, materials, methods, and processes, which require particular attention.
DANGER

Indicates an imminently hazardous situation that can result
in death or serious injury.

WARNING

Indicates a potentially hazardous situation that may result indeath or serious injury.

CAUTION

Indicates a hazardous situation that may result in minor
injury or property damage.

NOTE

Provides advice/information on product handling.

Safety Precautions
Carefully read this manual prior to use.
Follow the precautions below to ensure safe operation.
DANGERWARNINGWARNING• When a gas alarm activates, immediately take all the necessary
measures to prevent accidents including a gas explosion.
• High concentration combustible gas may be discharged from thegas outlet. Do not place the gas outlet near an ignition source.
• Zero adjustment (zeroing) starts automatically when the detector isturned on. Make sure to turn on the detector in clean air to prevent
incorrect zero adjustment. Incorrect zero adjustment will cause
inaccurate detection.
• Do not block any gas inlet and outlet. If blocked, accurate detection
is not possible.
• Avoid water intake. Water entering the gas sampling tube or gas
detector prevents proper gas detection.
• Keep the filter element at the drain filter set clean and dry. If thefilter element is dirty or wet, proper gas detection is not possible.
• Keep the dust filter clean. If the filter is dirty, proper gas detection is
not possible.
• Do not block the audio opening. If blocked, the audible alarm will bemuffled.
• Use only the following batteries:
Panasonic alkaline AA battery(LR6) x 2pcs
Varta alkaline AA battery(4106) x 2pcs
Duracell alkaline AA battery (MN1500) x 2pcs
Energizer alkaline AA battery(E91) x 2pcs

-3-

1. Introduction

CAUTION• If this product is to be unused for an extended period of time,
remove the batteries from the unit. Failure to do so may cause
them to leak or discharge, leading to product failure.
• If this product is to be unused for an extended period of time, turnon the product every 6 months to check for normal pump operation.
Failure to do so may impair the pump performance.
• This product is explosion proof equipment. Do not disassemble,
modify, or alter the structure of this unit or its electrical circuits.
Doing so may impair the performance of the explosion proof
characteristics.
• Do not leave the product in high temperature/humidity conditions
for a long period of time. Doing so may impair the performance ofthe product.
• Avoid using the product outside the specified operating
temperature/humidity range or exposing the product to abrupt
temperature/humidity changes. Failure to do so may impair the
performance of the product.
• Avoid rapid changes in pressure. Failure to do so may impair the
product performance or damage the sensors.
• Avoid strong mechanical shock, impact or vibration to the product.
E.g. dropping or bumping. Failure to do so may impair the
performance of the product.
• If condensation is present on the product, remove it and make surethe unit is completely dry and checked for abnormalities beforeuse.
• This detector may detect gases or solvent vapors that are nottarget gases. Take the usage environment into consideration.
• Do not use the product in a place or near a place where silicone
sealant/vapor may be present. Doing so may impair the
performance of the product.
• Detecting high concentrations of sulfur dioxide or chlorine, etc. may
shorten the sensor life or increase errors.
• Only use specified batteries. Failure to do so may impair the
explosion proof performance of the product.

-4-

2. Unit Dimensions and Components

①

②
③

⑨
⑪

④

⑫

⑬

⑤

⑭
⑥

⑦

⑧
⑩
⑮

-5-

2. Unit Dimensions and Components
Item

Component name①②

Short probe (AT-2G)
Cap

④
⑤

Dust filter (FE-106)
Exhaust outlet③

Filter case⑥

POWER/SENS. button⑦

BUZZER button

⑧
⑨
⑩
⑪

RESTART PUMP/BACKLIGHT
buttonFlashlight
Alarm/error light, red(2 places)
Audio opening
LCD

⑭
⑮

Press to restore the pump operation when a pumperror occurs, to turn on LCD backlight, or to display
the target gas name on LCD.
LED flashlight to illuminate a target spot.
These lights flash or light up when a gas leak isdetected. As the concentration of the leaked gas
increases, the lights flash faster, and finallybecome steadily lit.
They also flash in the event of a pump or sensor
error.
Opening for audio.
Displays gas sensitivity level, message, etc.
(a) Battery levelHighLow(b) Currently selected target gas, “GAS1” or“GAS2”, is displayed. Check the gas namelabel for gas name. For a single-gas detector,
neither “GAS1” nor “GAS2” is displayed.
(c) Musical note icon
is present when theoperating sounds are enabled.
/is present when the(d) Speaker icon
gas alarm audio is enabled/disabled.
(e) Pump icon rotates during normal pump
operation.
(f) Gas sensitivity, target gas name, or error code.

⑫⑬

Description/Function
Gas suction inlet.
Connection point for a short probe.
Houses a filter element which prevents water anddust from entering the unit.
Combination of ② and ③ is called “drain filter set”
Prevents dust and sand from entering the unit.
Discharges sampled gas.
Press to turn on/off the detector or to set the gas
sensitivity level.
Press to mute/unmute the gas alarms or operating
sounds.
Used for switching the target gas when your unit isa two-gas detector.

Gas sensitivity LEDs, green(5 places)
Battery cover

Indicates 5 levels of gas sensitivity, 0, 1/5, 1, 2,
and 3.
Cover for battery compartment.

Gas name label

Indicates target gas(es).

-6-2. Unit Dimensions and Components

Leather case

Item
⑯
⑰
⑱

Component

Description/Function

Side zipper

Access for battery replacement.

Side pocket

Stores a quick start guide.

Inner pocket

Stores replacement filters/filter elements.

-7-

3. Operation
Procedure
WARNING

Steps

1. Installbatteries• Perform routine check prior to use. (Page 21)

2. Poweron

Warm- Gas sensitivity
displayedup

3. Detectgas leak

4. Poweroff

1.

Install batteries
Units are shipped without batteries installed. Install the provided batteries.
(“Battery replacement” on page 20.)

2.

Power onWARNING

Warm-upGas sensitivity displayed• Zero adjustment (zeroing) starts automatically when the detector
is turned on. Make sure to turn on the detector in clean air toprevent incorrect zero adjustment. Incorrect zero adjustment willcause inaccurate detection.

(1) Press and hold the POWER button for one second. The detector beeps once
when tuning on.
(2) The warm-up starts. The sensor’s status is indicated using the five green gas
sensitivity LEDs. As the sensor becomes more stable, the light in these five
LEDs moves from top to bottom (from Level 3 to 0), then finally the LED for “0”keeps flashing until the warm-up is completed. Warm-up takes up to 3 minutes.
L

SENS.

H

L

SENS.

H

L

SENS.

H

L

SENS.

H

L

SENS.

H

Sensor is stable

NOTE• The gas sensitivity LEDs may not flash individually depending on
the sensor stability status. E.g. when the sensor stabilizes very
quickly. However, if the detector has been unused for a long
period of time, the warm-up may take longer or the error code
“E-S” (sensor error) may be displayed on the LCD. Power cycle
the detector, if “E-S” is displayed. (Refer to the error code table on
page 17.)-8-

3. Operation(3) When the warm-up is completed, the detector beeps
once and the corresponding green gas sensitivity LED
lights up. The gas sensitivity level is also displayed
numerically on the LCD.
The default gas sensitivity level is “1” when thedetector is turned on for the first time. The next timethe detector is turned on, the gas sensitivity will be set
at the same level before it was turned off.

CAUTION

Check the target gas of the detector prior to use.
• XP-702IIIS-B single-gas detector: Check the gas name with thegas name label on the unit.
XP-702IIIS-A/F two-gas detector: Either “GAS1” or “GAS2” isdisplayed on the LCD. Check its corresponding gas name withthe gas name label on the unit.
• Double press the RESTART PUMP button to display the target
gas name on the LCD. (Page 14)-9-3. Operation(4) The gas sensitivity level can be selected from Levels “0”, “1/5”, “1”, “2”, and “3”.
Level “0” is the highest. Change the gas sensitivity level as necessary.
NOTE• Detectable gas concentration for Levels “0” and “1/5” are as follows.
Level “0” :10 ppm or less (detectable leak rate: 3.3×10-6 Pa･m3/s)
Level “1/5”: Approx. 30 ppm• For refrigerant leak detection, the sensitivity level is fixed at Level“1/5” and cannot be changed.

● To decrease the gas sensitivity level
Each press of the POWER button decreases thegas sensitivity level by one level, being followed
by one beep. The light in the five LEDs moves up
one step and the level is numerically displayed on
the LCD. Pressing the POWER button when thegas level is Level “3” returns the level back to “0”.
3

NOTE

2

1

1/5

Low

Gas
sensitivity0• When the POWER button is pressed and held for three seconds orlonger, the detector will turn off.

● To increase the gas sensitivity level
Double press of the POWER button increases thegas sensitivity level by one level, being followedby two beeps. The light in the five LEDs moves
down one step and the level is numericallydisplayed on the LCD. Double pressing the
POWER button when the gas level is Level “0”returns the level back to “3”.
3

2

1

1/5

- 10 -

0Gas
sensitivityHigh

3. Operation3.

Detect gas leak
DANGER• If the gas alarm sounds and the red alarm lights flash or light up,
take the appropriate action. Evacuate to a safe place if needed.
Check that the gas concentration is at safe level before returning
to the site of the alarm.
• When the empty battery icon
is displayed (lit steady) on the
LCD, the battery is almost empty. Prepare replacement batteries.
If the error code “E-B” (empty battery on page 17) is displayed on
the LCD, the unit starts beeping and the detector will soon
become inoperable. Replace batteries before this happens.
Replace batteries in a non-hazardous area (clean air). (“Battery
replacement” on page 20)

Put the suction inlet close to the suspected leak point. When a gas leak isdetected, the red alarm lights start flashing and the detector starts beeping.
The higher the gas concentration is, the faster the detector beeps (similarly, thecloser the detector comes to the leak point, the faster it beeps), and finally the
beep sounds become a steady tone. As synchronized with the alarm sound, thered flashing alarm lights become steadily lit.
NOTE

• The audio part of the gas alarm can be muted as necessary.
(“Mute/unmute gas alarm audio” on page 16.)

4．
．Power off
CAUTION• Before turning off the detector, ensure that an audio alarm is not
active. Turning off the detector during an active audio alarm maycause a sensor error when the detector is turned on again. (“E-S”
code on page 17.)
• When refrigerant gas is detected, turn off the detector after flushingwith clean air. Failure to do so may cause a sensor error when thedetector is turned on again. (“E-S” code on page 17.)
• When high concentration gas is detected, turn off the detector after
flushing with clean air. Failure to do so may impair the productperformance. (“Intake of high concentration gas” on next page.)

After gas detection is completed, press and hold the POWER button for threeseconds. The detector turns off with three beeps (beep pattern: short-short-long).

- 11 -

3. Operation● Automatic gas exhaust modeIf gas remains inside the detector, the detector enters the automatic gas exhaustmode once turned off.
Once the automatic gas exhaust mode starts, one short beep is heard and thenumber “60” is displayed on the LCD, indicating a countdown is started. When thedetector reaches zero, it will turn off automatically. However, the detector will turn off
earlier if all gas in the detector is removed. During the automatic gas exhaust mode,the detector cannot be operated except to turn it off.
● Intake of high concentration gas
After the detector detects a high concentration of any gas in the table, place thedetector in clean air for a prescribed period of time before turning it off. Not doing so
may impair the product’s performance, or cause a sensor error code to be shown on
the LCD when the detector is turned on again.
Time required to flush the detector in clean air assumingthat the detector has taken in 1,000 ppm gas
Time required to
Gas nameplace the detector
in clean air
Ammonia (NH3)Ethylene oxide (EO)

10 minutes

Pentane (C5H12)
Butadiene (C4H6)
Gasoline
Propylene oxide (PO)Benzene (C6H6)30 minutes

Cyclopentane
Dichloroethane (EDC)
lsopropyl alcohol (IPA)- 12 -

3. Operation

NOTE• On-screen target gas names for each model are as follows.

Target gas
On screen gas name
GAS1
GAS2
GAS1
GAS2
Methane
CH4
Isobutane
I-B
XP-702IIIS-B
Other than
ETC
Methane/Isobutane
Isobutane
MethaneI-B
CH4
Other than
Other than
XP-702IIIS-A
ETC
ETC
Isobutane*
Methane*Isobutane
Refrigerant
I-B
RFG
MethaneRefrigerant
CH4
RFG
XP-702IIIS-F
Other thanRefrigerant
ETC
RFG
Isobutane/Methane* For any combination other than isobutane (GAS1) + methane (GAS2), “ETC” will be displayed
as gas name.
E.g. Combination of propane (GAS1) + methane (GAS2), Combination of methane (GAS1) +isobutane (GAS2).
Model- 13 -

3. Operation

Display target gas nameDouble press the RESTART PUMP button to display the target gas name on the
LCD. To go back to the gas sensitivity display, double press the RESTART PUMP
button.
Pressing the POWER button while the target gas name being displayed will change
the sensitivity level and the level will be numerically displayed on the LCD.
Target gas

On screen gas nameMethaneIsobutane

Refrigerant

Other gas

- 14 -

3. Operation

Switching target gas (for two-gas detector, XP-702IIIS-A/F)
The detector can detect one target gas at a time. The target
gas can be changed during power up.
To switch the target gas, first turn off the unit, then turn it on
by simultaneously pressing the POWER and BUZZER
buttons. The on-screen indication will change from GAS1 to
GAS2 or vice versa.
Once the unit is turned on, the target gas cannot be changed.
NOTE• Double press the RESTART PUMP button todisplay the target gas name on the LCD. (Page14)• XP-702IIIS-B single-gas detector does not
display “GAS1” or “GAS2” on its LCD, andcannot switch the target gas.

Silent mode (all operating sounds/gas alarm muted)

Musical note Speaker icon
icon (unmute) (unmute)

CAUTION • While in Silent mode, the detector iscompletely silent except for a device
malfunction alert or empty battery notification.
Because of this, it is not possible to monitor
operation via audio. It is recommended not to
use Silent mode unless necessary, and toensure Silent mode is exited after use.

To enter Silent mode, press and hold the BUZZER button forthree seconds while the detector is on. The speaker icon
appears and the musical note icon
dissapears. While inSilent mode, the detector is completely silent except for adevice malfunction alert or empty battery notification.
To exit Silent mode, press and hold the BUZZER button forthree seconds. The gas alarm audio cannot be turned on/off
while the unit is in Silent mode. (Refer to next page tomute/unmute gas alarm audio.)
NOTE• Silent mode will remain active even after thedetector is turned off. Press and hold the
BUZZER button for three seconds or perform
a battery replacement, to exit Silent mode.

- 15 -

Speaker
icon (mute)3. Operation

Mute/unmute gas alarm audio

Speaker icon
(unmute)The audio part of a gas alarm can be turned on/off.
Press the BUZZER button while the detector is on.
The detector beeps once and the audio part of agas alarm will be turned on/off.
or.
The speaker icon will be changed to

NOTE• The next time the detector is turned
on, the gas alarm audio will remainin the same position before it was
turned off. However, it will bealways set to the “on” position after
battery replacement.
• Audio part of a gas alarm cannot be
turned on/off during Silent mode.

Speaker icon
(mute)

Turn backlight on

The LCD’s backlight lights up for five seconds by pressing the RESTART PUMP
button. In addition, the backlight lights up automatically for 15 seconds when anerror occurs.

Turn flashlight on

The flashlight lights up by pressing and holding the RESTART PUMP button for 1.5
seconds. It will continue to be lit while the button is being held down.
To turn off the flashlight, release the RESTART PUMP button. It will stay lit for
approx. one minute, then turn off.

NOTE

• The backlight and flashlight are designed not to light up when thebattery level reaches too low (is displayed) to conserve thebattery life.
• The backlight lights up when the flashlight is in use.

- 16 -

4. Error Codes (error alarms)
In case of a devise error, the red error lights (two places) start flashing, and thecorresponding error code is displayed on the LCD. At the same time, the detector starts
beeping. The major error codes to be displayed are given in the table below. Take thenecessary action according to the displayed error code.
Item

Error code
Error lights
flash.

Sensor error

Error code table
Cause
Gas may havebeen present
when the detector
was turned on.

Error lights
flash.

Possible water
intake or suction
inlet may beblocked.

Error lights
flash.

Battery voltage is
too low, and thedetector isinoperable.

Error lights
flash.

Main unit failure

Pump error

Empty
battery

Main uniterror- 17 -

ActionTurn off the detector, then turn it
on in clean air. If the error codeis still present after turning off
and on a few times, the sensor
may be broken. In this case,contact us for repair.
Remove water. (Refer to “Filter
element replacement” on page
18 for removal method.) Press
the RESTART PUMP button. If
the error code is still present, thepump may be broken or water
has entered inside the detector’s
main unit. In this case, contact
us for repair.
Replace the batteries with new
ones. (Refer to “Battery
replacement” on page 20.)

Remove the batteries and installthem again after a few minutes.
Turn on the detector. If the error
code is still present, contact us
for repair.

5. Consumable Replacement
Filter element replacement
If the filter element is dirty or wet, or water is present inside the drain filter set, clean
the inside of the drain filter set, and replace the filter element with a new one.
CAUTION• Do not replace the filter element while the detector is on. Doing so
may cause foreign matter such as dust to enter inside the unit.
• Ensure that the filter element is aligned and installed correctly.
Incorrect installation may impair the waterproof and dustproof
functions which will then lead to incorrect detection.
• Ensure that the filter case is installed firmly. If installed loosely,
water may enter inside the unit.
• If water enters inside the detector through the filter element, propergas detection is not possible. Please contact us for repair.

NOTE• Do not push or poke the filter element into place (e.g. with finger,pen). Doing so may cause deformation or breakage of the filter
element which will then impair the waterproof and dustproof
functions.

(1) Turn the cap counterclockwise to remove it from the filter case.
CAUTION• When water or dust has accumulated
inside, take care so that the accumulated
water or dust will not spill inside the filter
case.

(2) Remove the O-ring from the filter case.

Cap

Filter case(3) Replace the filter element with a new one.
NOTE

CAUTION(4)• Clean the cap and inside of the filter caseas necessary with a dry cloth. Wipe themdry completely before replacing the filter
element.
• Always install a filter element (FE-2)
between the cap and the filter case.

Attach the O-ring back onto the case, and attach thecap to the filter case.

- 18 -

O-ringFilter element(FE-2)
Filter caseDrainfilter set

5. Consumable Replacement

Dust filter replacement
CAUTION• Always use the detector with the dust filter (FE-106).
• Water ingress cannot be prevented without use of a filter element.
Ensure that the filter element (FE-2) is installed in the drain filter
set.
• Do not replace the dust filter while the detector is in operation.
• While the dust filter is being removed for replacement, etc., takecare so that foreign matter such as dust or sand will not enter
inside the unit.

The dust filter (FE-106) prevents fine dust and sand from entering the built-in pump.
Do not remove it.
Replace it with a new one (sold separately), if dirty.
(1) Turn the filter case counterclockwise to remove thedrain filter set with the short probe as a single piecefrom the unit.
Drain
filter set

Turn filter case

Remove(2) Replace the dust filter with a new one.
Dust filter (FE-106)(3) Attach the drain filter set back onto the unit.

- 19 -

Insert5. Consumable Replacement

Battery replacement
WARNING• Only use specified batteries. Failure to do so may impair the explosion
proof performance of the product.
• Do not replace batteries or carry loose batteries in a hazardous area.

Whenis displayed on the LCD, the battery level is very low.
If the battery is empty, the LCD shows the error code “E-B” (empty battery) notifyingthat battery is empty and the detector will become inoperable soon. Replace thebatteries with new ones.
NOTE• Always use two new batteries of the same type.
• Replace both batteries at the same time.
• When used at low temperature, the battery life will be shorter thanwhen used at room temperature due to battery’s characteristics.

(1) Unfasten the two snap buttons, unzip the side of the leather case, and unfasten
the Velcro flaps on the bottom.
(2) Remove the battery cover from the main unit. Remove the old batteries from thebattery compartment. Install new batteries in the correct orientation by referringto the marking inside the compartment.
(3) Attach the battery cover. Make sure that the cover is firmly secured.
(4) Zip up the side of the leather case and fasten the Velcro flaps. Fasten the snap
buttons.
Battery cover

Snap button (2 places)

Velcro flaps- 20 -

6. MaintenanceThis product is a precision instrument. Please perform the periodical checks andinspections below to maintain the detector’s performance and ensure safety. In theevent of a failure to follow the safety precautions (1.“Introduction”), such as impact
shock from dropping or water ingress inside the detector, or use in the conditions
outside the specifications (9.“Specifications”), such as usage in temperature/humidity
exceeding the specified range, please contact New Cosmos or your New Cosmos
representative for inspection (fees may apply).

Routine check
Check item
Short probe

Filter element

Battery level

Airtightness

Alarm test
using
calibration gas

Description
Check that the probe is free of wear or damage that may interfere with
operation. Replace it with a new one, if worn or damaged.
Check that the filter element inside the drain filter set is clean and dry.
Replace the filter element with a new one if dirty or wet. Check that water is
not present inside the drain filter set. If present, remove it and make surethat the filter case and cap are completely dried and cleaned.
(“Filter element replacement” on page 18)
If the battery level is very low, replace the batteries with new ones.
(“Battery replacement” on page 20)
Turn on the detector. Cover the probe tip with finger. Check that the error
code “E-P” (pump error) is displayed on the LCD. If this code is displayed,then operation is normal. Press the RESTART PUMP button to resume theoperation.
If the error code is not displayed, the drain filter set may not be firmly
installed. Firmly install and try it again. If the error code is still not
displayed, the drain filter set may be damaged, or the diaphragm may not
be sealed properly. Replace them or contact us for repair.
Prepare calibration gas (e.g. CH4/55ppm/air balance commerciallyprepared gas cylinder, if your unit is used to detect methane gas leak).
Turn on the unit and set the sensitivity level to “1/5”. Let the detector
sample calibration gas. Check that the red alarm lights flash and audio
alarm starts. If the red alarm lights do not flash or the audio alarm does not(speaker icon) is displayed, contact New Cosmos
sound even thoughor your New Cosmos representative for inspection.
 When using a commercially prepared calibration gas (CH4/55ppm/airbalance), fill a urethane gasbag with gas. Let the detector sample thegas. If the alarm fails to sound, leave the gasbag for approx. 30 minutes
to allow the temperature/humidity/pressure of the gas inside to become
closer the ones of the ambient air before use.
 When using optional easy-use calibration gas, remove the drain filter set
and dust filter before test. Let the detector sample the calibration gas.
Note: The easy-use calibration gas isadsorbed on the dust filter. Remove thedust filter for proper alarm test.
Note: Caution is required to prevent
dust and sand from entering inside thepump while sampling gas.
After test, turn off the detector, andinstall the dust filter back in place.

- 21 -

Easy-use
calibrationgas6. Maintenance

Annual inspection
Contact New Cosmos or your New Cosmos representative to perform a periodic
inspection and adjustment at least once a year to maintain the product accuracy.

Consumable parts
Part Name

Model

Part No.

Filter element ( x 10 pcs)

FE-2

59160022

Drain filter set

DF-11659073007

Dust filter ( x 5 pcs)

FE-10659160335

Short probe

AT-2G

Instruction manual

20524843

Description

Attachment to checkthe surface ofpipe/fittings for gas
leaks.

20593546

Optional items
Part Name

Model

Part No.

CH4 55ppm/air balance
1000mL gas cylinder

10708064

Urethane gasbag (1L)
dia. 8mm

59240000

Urethane gasbag (2L)
dia. 8mm

59240001

Urethane gasbag (5L)
dia. 8mm

59240002
AT-5

Gas collector

20524430
AT-6

Gas collector

20524441- 22 -

Description
Calibration gas forroutine check.
(7000mL)
For routine check.
With tube andpinchcock

Optional attachment
to check the surfaceof pipe/fitting for gas
leaks.
Optional attachment
to check pipes behind
walls or undergroundfor gas leaks.

6. MaintenancePart Name

Model
AT-7A

Gas collector

Part No.

Description

20524432

Optional attachment
to be used with RP-4.

20524429

Optional attachment
to be used with AT-11
and RP-1.

20524531

Optional attachment
to be used with AT-11.

SH-4-1
Sampling tube (1 m)
SH-4-05
Sampling tube (50 cm)
AT-11
Annealed copper tube (60 cm)

20524431
w/tube59060000

AT-12
Flexible inlet adaptor

59050101
RP-1

Probe extension

20524428
RP-4

Probe extension

20524433

Optional attachment
to extend detection
range for lessaccessible pipes ortools.
Optional attachment
to be used with RP-1.
Shape-memory tube.
Optional attachment
to extend detection
range for lessaccessible pipes ortools.
Optional attachment
to check undergroundpipes and roadsurface for gas leaks.
Concentration levelhigh enough to trigger
an alarm.

Easy-use calibration gas

EG-10L(for isobutane)

59150100EG-10(for other thanisobutane)

59150200- 23 -

Note: This gas isadsorbed by the dust
filter. A proper test is
not possible if thedust filter remains
installed. Remove thedrain filter set anddust filter from the unit
when this calibration
gas is used.

7. Troubleshooting
Before contacting us for service repair, perform basic troubleshooting using the tablebelow.
If the detector locks up (cannot be turned off), remove all batteries. After a few minutes,
put the batteries back in and turn on the detector.
Symptom
Pressing POWER
button does not turn on
the power.

Cause
Battery orientation
incorrect.

Battery depleted.
Error code is displayed.

ActionRemove batteries
and reinsert them inthe correctorientation.

Reference
Battery
replacement(Page 20)

Replace batteries.

Refer to the error codes table.

Error codes(Page 17)

Silent mode is on.

Cancel Silent mode.

Silent mode
(Page 15)

Gas alarm audio is
muted.

Unmute the gas
alarm audio.

Mute/unmute
gas alarm
audio(Page 16)

No audio sounds.

- 24 -

8. Warranty
Warranty
The warranty period is one (1) year from the date of purchase.
You are entitled to the limited warranty, if the product malfunctions due to a
manufacturing defect during normal use in accordance with the instruction manual,specifications and labels.
Warranty Scope
If the product fails or is found to be damaged due to a manufacturing defect during thewarranty period, and used in accordance with the instruction manual and specifications,
we will provide a free replacement and repair service. This warranty covers the New
Cosmos product/parts only and not third-party product/parts.
Warranty Exclusions
The following will be repaired at the cost of customer even during the warranty period.
(1) Failures and damages incurred by incorrect use, deliberate acts or negligence of theuser.
(2) Failures and damages caused by disaster, earthquake, storm and flood, lightning,
extreme climate, abnormal power supply voltage, excessive electromagnetic
interferences, or other acts of God.
(3) Failures and damages resulting from repair and/or modification by non-New Cosmos
certified technicians.
(4) Consumables and failures and damages resulting from improper consumablereplacement.
(5) Other failures and damages not attributable to the manufacturer.
MaintenanceThis product is a precision instrument. Perform routine checks, and contact us for anannual inspection at least once a year to ensure safe operation and proper performanceof the product.
If you have any questions about routine checks, please feel free to contact us. Annual
inspections will be carried out according to the maintenance service contract. For repair
service, please contact us (shipping charge will apply).

- 25 -

9. Specifications■ Product specifications
Model

XP-702IIIS-B

XP-702IIIS-A
Two-gas
Switchable
Two combustible
gases
E.g. methane andisobutane

Single-gas
Target gases *1

Detection
principle
Gas sampling
methodDetectable leakrate
Lowestdetectableconcentration
Response timePower

Operating time *2
Protection class *3
Operatingtemperature andhumidity
Dimensions
WeightOne combustiblegas
E.g. methane orisobutane etc.

XP-702IIIS-F
Two-gasswitchable
One combustible gas
and refrigerant
E.g. methane andrefrigerant (R-407C
or R-410A etc.)

Hot-wire semiconductor sensor
Automatic pump typeCombustible gas: 3.3×10-6 Pa･m3/s
Refrigerant (R-407C): 12.4g/year
Refrigerant (R-410A): 11.2g/year
Combustible gas (e.g. methane, isobutane): 10 ppm
Refrigerant: 30 ppm
Less than 5 seconds except refrigerant
Panasonic alkaline AA battery (LR6) x 2pcs
Duracell alkaline AA battery (MN1500) x 2pcs
Varta alkaline AA battery (4106) x 2pcs
Energizer alkaline AA battery (E91) x 2pcs
Approx. 12 hours (AA alkaline batteries at 25°C)
IP22 or equivalent *4-20 to +50ºC, 85％RH or less (no condensation)
Approx. W38 × H135 × D32 mm (excluding protruding parts)
Approx. 190 g (including batteries and leather case)*1. Please contact New Cosmos or its authorized representative for the target gases.
*2. The operating time (battery life) may vary depending on environment and conditions of use,
storage period, manufacturer etc.
*3. When stored in the leather case.
*4. “IP22 or equivalent” refers to a structure to prevent access to hazardous parts inside thedevice with fingers (IP2X) and a structure to protect against dripping water when the device
is tilted up to 15 degrees vertically, at 4 different positions, 2.5 min each position (10 min in
total) (IPX2).

- 26 -

9. Specifications■ Explosion proof specifications
Model
Approvals*

Markings

Standards

Protection class*Power (rated)

XP-702IIIS
USA/CANADA UL Certificate No. E108302,
Class Ι, Division 1, Groups C and D, T3
Class Ι, Zone 0, AEx ia ΙΙ B T3 Ga
USA/CANADA: Class Ι, Zone 0, AEx ia ΙΙB T3 Ga
Class Ι, Zone 0, Ex ia ΙΙB T3 Ga
USA:Class Ι, Division 1, Groups C and D, T3(Intrinsically safe)[UL Division]
UL 913, 8th Edition[UL Zone]
UL 60079-0, 6th Edition
UL 60079-11, 6th Edition[CSA (cUL) Zone]
CSA C22.2 No 60079-0
CSA C22.2 No 60079-11
IP20Power source: 3.0 VDC (1.5V battery x 2 pcs)
Panasonic alkaline AA battery (LR6) x 2pcs
Duracell alkaline AA battery (MN1500) x 2pcs
Varta alkaline AA battery (4106) x 2pcs
Energizer alkaline AA battery (E91) x 2pcs
Ambient temperature: -20 to +50ºC* When stored in the leather case.

- 27 -

10. Detection Principle
Hot-wire Semiconductor Sensor

A small amount of metal oxide semiconductor is deposited on a platinum coil, then theplatinum coil is heated to a high temperature. When reducing (electron donating) gases
react with the surface of the metal oxide, electrons will be donated to the semiconductorin the course of the reaction. Consequentially, the resistance of the semiconductor
decreases as more charge carriers (electrons) are available. The sensor element(semiconductor on the platinum coil) can be understood as two resistances in parallel,being part of a bridge circuit. The resistance change of the semiconductor is read asdifferential voltage using a bridge circuit. This type of sensor is very sensitive and can
detect combustible or toxic gases at a low ppm or even a ppb level.

11. Glossary
TermClean air or normal
airDefinition
Standard atmosphere which contains 20.9 to 21.0% oxygen indry condition or atmosphere without target gas or interference
gases.

Target gas

Specific gas to be detected and used to trigger alarms.

Hazardous area

An area in which an explosive atmosphere is present, or may
be expected to be present, in quantities such as to require
special precautions for the construction, installation and use ofelectrical apparatus.

Non-hazardous area

An area in which an explosive atmosphere is not expected to
be present in quantities such as to require special precautions
for the construction, installation and use of electrical apparatus.

Explosive
atmosphere

Mixture of air and flammable substances in the form of dust orvapor which are within their explosive limits.

Flameproof enclosure(explosion proof
enclosure)

Enclosure in which the parts which can ignite an explosive
atmosphere are placed. This enclosure can withstand thepressure created during an internal explosion of an explosive
mixture, and prevent the ignition of an explosive atmosphereoutside the enclosure.

Intrinsically safe (IS)structure

Structure tested (e.g. spark test) to not become an ignition
source in a flammable atmosphere due to an electrical spark or
hot surface during normal operation and fault conditions.

- 28 -

Additional copies of this instruction manual may be purchased.
Contact New Cosmos or its authorized representative for ordering.

Authorized representative:

Manufacturer:
NEW COSMOS ELECTRIC CO., LTD.
2-5-4 Mitsuya-naka, Yodogawa-ku,
Osaka 532-0036, Japan
URL: http://www.new-cosmos.co.jp/

XP-702ⅢS-ABFET（00）2005.100