Semiconductor Manufacturing
Gas Detector

This instruction manual explains the use of three models listed on the left.

• Keep this Instruction Manual available for quick reference when needed.
• Read this Instruction Manual and thoroughly understand before using the
product.

Table of Contents

Included in this Package ........................................................................... 1
1. Introduction ............................................................................................ 2
Symbols ................................................................................................... 2
Safe Operation ......................................................................................... 3
2. Part Names and Functions .................................................................... 4
3. Operating Procedure ............................................................................. 7
Attachment of Drain Filter......................................................................... 7
Operating Procedure ................................................................................ 8
Silent Mode (No Operation Sound) ........................................................ 11
Deactivating the Alarm Buzzer ............................................................... 12
Lighting the Backlight ............................................................................. 12
4. Error Displays ...................................................................................... 13
5. Replacement of Consumable Parts .................................................... 14
Filter Element Replacement ................................................................... 14
Battery Replacement .............................................................................. 15
6. Maintenance Check ............................................................................. 16
Daily Check ............................................................................................ 16
Periodic Inspection ................................................................................. 16
Consumable Parts, Replacement Parts, and Options ............................ 17
7. Troubleshooting ................................................................................... 18
8. Warranty ............................................................................................... 19
9. Specifications....................................................................................... 20
10. Detection Principle ............................................................................ 21

－ Included in this Package －The package includes the items listed in the following table. Before using the Gas Leak
Detector, be sure to check that all items have been provided. Every precaution has beentaken in preparing the Gas Leak Detector. However, if any items are missing or damaged,please contact your New Cosmos distributor. Replacements for any missing or damaged
items will be sent.

Name

.

Quantity

Gas Leak Detector (with soft case)1

DF-114 Drain filter

1

Replacement FE-2 filter element

1

AT-2B Attachment

1

Hand strap

1

Size AA alkaline batteries

2

Instruction Manual

1

Operation guide1

Inspection report

1-1-

1. Introduction
Thank you for purchasing a New Cosmos Gas Leak Detector. Please read this Instruction
Manual thoroughly before using the Gas Leak Detector to help prevent gas leakage
accidents and to aid in safety inspections.
XP-703DIII Gas Leak Detector detects leakage of semiconductor manufacturing gases andwhen the gas concentration exceeds the set value, a buzzer and lamp provide notificationof the gas leakage to help prevent gas leak accidents.
Read and understand thoroughly this Instruction Manual regardless of your experience withusing Gas Leak Detectors.
Do not use this Gas Leak Detector for improper purpose. Do not use this Gas Leak
Detector in undocumented way in this manual.

Symbols
The following symbols are used for safety purposes:

CAUTION

Indicates an imminently hazardous situation, which will result in deathor serious injury if not avoided.
Indicates a potentially hazardous situation, which will result in deathor serious injury if not avoided.
Indicates a potentially hazardous situation, which may result in minor
injury or property damage if not avoided.

NOTE

Operational advice and/or instruction.

DANGERWARNING-2-

Safe Operation
Be sure to observe the following to use the product safely and properly.
DANGERAt the time of the detection, the target gas may be discharged from theexhaustion port.
• DANGER. Do not inhale gas.
• DANGER. Keep away from the fire.

WARNING • Be sure to turn ON the power in clean air. Since zero adjustment is
•
•
•
•
•

performed automatically, the proper gas concentration will not be
displayed when turning on the power in gas atmosphere.
Do not block the inlet and outlet. Otherwise, it may no be able to detect
properly
Do not allow water or liquids to enter the Gas Leak Detector. It may
cause interference to the gas detection and may damage the Gas Leak
Detector.
Make sure that Filter Element is clean. If the Filter Element is dirty orwet, it may no be able to detect properly.
Do not block the buzzer hole. It will muffle the alarm.
This Gas Leak Detector does not have an explosion-proof structure.
Do not use in hazardous location.

CAUTION • Remove the batteries if the Gas Leak Detector will not be used for an
•

•
•
•
•
•
•
•
•
•
•
•

extended period of time.
Check the remaining battery charge periodically (approximately once amonth) even if the Gas Leak Detector remains unused for an extended
period of time. Replace batteries if the batteries are leaking when theremaining battery charge is low.
Do not disassemble, alter, or change the structure or electric circuits of
the Gas Leak Detector. It may affect its performance.
Do not leave the Gas Leak Detector in hot and humid environment fora long period of time. It may affect its performance.
Do not use the Gas Leak Detector in places where the temperature or
humidity fluctuates greatly. It may affect its performance.
Keep the Gas Leak Detector away from significant changes inatmospheric pressure. It may affect the performance of or damage thesensor.
Avoid high mechanical impacts, dropping and throwing the Gas Leak
Detector. It may affect its performance.
In case of dew condensation, conduct an inspection after drying theGas Leak Detector completely before use.
Do not use the Gas Leak Detector near silicon sealing agents or inatmosphere containing silicon gas. It may affect its performance.
The Gas Leak Detector may detect gas or solvent vapors other than
the target gas. Consider the inspection environment when using theGas Leak Detector.
Detecting high concentration of SO2 or Cl2 may decrease the sensor
life or increase errors.
This is a simplified drip-proof Gas Leak Detector by soft case. Avoid aspracticably as possible exposure to water.
Keep away from the wireless applications. The alarm may sound dueto the radio waves near the wireless applications.
-3-2. Part Names and Functions

1

2

8

9
10

3
11
4

5

6

7

-4-

No.

Name

Functions

1

AT-2B Attachment

Gas inlet.

2

DF-114 Drain Filter

Protects the Gas Leak Detector from water, dust,
and other foreign matter.

3

OutletGas outlet to exhaust sampled gas.

4

POWER/SENSITIVITY Button

5

BUZZER Button

6

ZERO/ RESTART PUMP/BACKLIGHT Button

Starts Zero Adjustment.
Restarts pump operation after a pump error.
Lights the LCD backlight.

7

ALARM /ERROR Lamps (red)Light up or flash when detecting gas leakage. The
flashing frequency increases as the concentrationof the gas leak increases. The lamps light if theconcentration is very high. These lamps also flash
when an error occurs in the pump or sensor.

8

Buzzer hole

The buzzer sounds.

Turns the power ON and OFF.
Sets the gas sensitivity level.
Turns the alarm buzzer and operation sound ON
and OFF.

Displays the gas sensitivity and messages.
(a) The remaining battery charge is displayed.
Battery charge:
High . . . . . . . . . . . . . . . . . Low

LCD

(c)
(d)
(a)

(e)

9

(f)
●

(b)

10

Gas Sensitivity Lamps (green)

11

Battery Lid(b) It indicates the status of zero adjustment.
(c) The indicator shows the operation sound. (Theindicator is displayed only when the operation
sound is turned ON.)(d) The indicator shows the alarm sound. (Theindicator is displayed only when the alarmsound is turned ON.)(e) The pump operation is displayed. (The indicatorrotates if the pump is operating normally.)(f) The gas sensitivity level and errors are
displayed.
Indicate the gas sensitivity level. There are five gas
sensitivity levels.
The cover to the battery compartment.

-5-

Soft case
1

2
3

No.

Name

Functions

1

Side Zipper

Open the zipper to replace the batteries.

2

Back Pocket

The Operating Guide is stored here.

3

Inside Pocket

A Replacement Filter Element is stored here.

-6-3. Operating Procedure
Attachment of Drain Filter
Attach the Drain Filter and Attachment to the Gas Leak Detector before use.
1)

Place the Gas Leak Detector in the soft case, and close the zippers (both sides)
and Velcro tape.
(The Gas Leak Detector is in the soft case from the shipment.)

2)

Insert the Attachment to the Drain Filter.
(The attachment is inserted to the drain filter from the shipment.)3)

Turn the Drain Filter clockwise to the Gas Leak Detector and tighten.
(The proper detection cannot be performed unless the Drain Filter is firmly
attached.)

2

3

1

-7-

Operating Procedure
WARNING

STEPS

Always perform the daily check before use. (Refer to page 16.)

Insert1 batteries

Turn ON

2 power

WarmupGas
concentration
display

3 Detection

Turn OFF4 power

1. Insert the Batteries
There are no batteries in the Gas Leak Detector at the point of purchase. Insert theenclosed batteries into the Gas Leak Detector. (Refer to Battery Replacement on
page 15.)
2. Turn ON the Power, Warm-up, Display Gas Sensitivity
WARNING Be sure to turn ON the power in clean air. Since zero adjustment isperformed automatically, the proper gas concentration will not be
displayed when turning on the power in gas atmosphere.

1) Press the “POWER/SENSITIVITY” button for approximately one second. The
buzzer beeps and the power will be ON.

2) “ADJ” is displayed on the LCD while the Gas Leak Detector is warming up. The
stability of sensor is indicated with four gas sensitivity lamps (green). As thesensor stabilizes, the flashing lamp moves down in order from the lowest
sensitivity level “1”. Before warm-up is completed, the highest sensitivity level “4”lamp will flash. (The maximum warm-up time is three minutes.)NOTE

L SENS.
1

L SENS.
1

L SENS.
1

L SENS.
1

2

2

2

2

3

3

3

3

4
H

4
H

4
H

4
H

If the sensor stabilizes quickly, all of the lamps may not flash one at atime. If the Gas Leak Detector remains unused for an extended periodof time, the warm-up time may increase and “E-S” may be displayed on
the LCD. (Refer to Sensor Error on page 13.)
If sensor error is displayed, cycle the power.

-8-

L SENS.

3) When the warm-up operation is completed, the buzzer
sounds once, a gas sensitivity lamp (green) lights, andthe gas sensitivity level is displayed on the LCD.
The gas sensitivity level is set to level “3” immediately
after the batteries are inserted. It starts up next timewith the same settings of gas sensitivity level.

1
2
3
4
H
5

4) The gas sensitivity can be set from four levels in increasing order of sensitivity “4”,“3”, “2” and “1”. The gas sensitivity can be changed as needed.
NOTE• The detected gas concentrations for the gas sensitivity levels are as
follows (for hydrogen).
Level 4: Detects concentration of 1 ppm or less.
Level 3: Detects concentrations of around 6 ppm.

 Decreasing the Gas Sensitivity Level
Each time pressing the “POWER/SENSITIVITY”
button, the buzzer will sound once and the gas
sensitivity level will be decreased one level. The
lighted gas sensitivity lamp (green) will move up
one by one, and the LCD will also display thesame sensitivity level as shown on the gas
sensitivity lamp.
When the gas sensitivity level is decreased
beyond “1”, the level will return to level “4”.
* Sensitivity setting:

NOTE

1

2

3

L

SENS.

1
2

LOW

3
4
H

Gas sensitivity

4

Press the POWER/SENSITIVITY button for more than 3 seconds toturn OFF the power.

 Increasing the Gas Sensitivity Level
Each time pressing the “POWER/SENSITIVITY”
button twice (double-click), the buzzer will soundtwice and the gas sensitivity level will be
increased one level. The lighted gas sensitivity
lamp (green) will move down one by one, andthe LCD will also display the same sensitivity
level as shown on the gas sensitivity lamp.
When the gas sensitivity level is increased
beyond “4”, the level will return to level “1”.
* Sensitivity setting:

1

2

3

-9-

4

L

1

SENS.
Gas sensitivity

2
3
4
H

HIGH

3. Zero Adjustment
CAUTION • It needs to perform “Zero Adjustment” to use at sensitivity level “4”.

Due to its high sensitivity, it is too susceptible to the ambientenvironment to detect gas appropriately.
• It can be used even if the “Zero Point Status” (dot mark) is blinking oroff, but it may not be able to detect gas properly.

Before detection, follow the steps in accordance with the"Zero Point Status" (dot mark) on the bottom left corner of
LCD.

L
1

SENS.

2

Lighting: Zero Adjustment is not necessary for using at
sensitivity level “3”, “2” or “1”. It needs to perform
Zero Adjustment to use at sensitivity level “4”.
Blinking: Perform Zero Adjustment.
However, when the lighting on and off repetitively
may seem to be blinking. In this case, turn off thepower once and then turn on again.

3

●

4
H

“ADJ” is displayed
Zero Point Status

Lighting Off: Zero Adjustment cannot be performed. (Thereis a possibility of the presence of gas.) Wait
until it blinks. If it does not blink, after a few
minutes, turn off the power once and then turnon again.
To perform Zero Adjustment, press and hold the “ZERO/RESTART PUMP/BACKLIGHT” button for more than 3 seconds.
• If Zero Adjustment is able to be performed, “ADJ” will be displayed on the LCDwith “blip” sound for 3 seconds, and then it will return to display the gas
sensitivity level.
• If Zero Adjustment is not able to be performed, the buzzer sound will beep andit remains to display the gas sensitivity level on the LCD.

4. Detection
DANGER • Alarm Buzzer

If the alarm buzzer sounds or the alarm lamp (red) lights up /flashes,take necessary measures.
• If the remaining battery charge indicatorappears, replace thebatteries in a non-hazardous clean air location promptly. (Refer toBattery Replacement on page 15.)
If “E-B” is displayed on the LCD (refer to Battery Alarm on page 13),the buzzer will start sounding continuously and the Gas Leak
Detector will not be working. Early battery replacement isrecommended.

- 10 -

Move the Attachment towards the detection place. When the Gas Leak Detector
detects a gas leak, the alarm lamp (red) will flash and the alarm buzzer will startsounding continuously. As the gas concentration increases, the alarm buzzer willsound more frequently and will change to continuous sound. (The alarm buzzer willsound faster as approaching the location of gas leak.)
The alarm lamp (red) will flash and then light continuously in sync with the alarmbuzzer.
NOTE

The alarm buzzer can be turned ON and OFF as needed. (Refer toDeactivating the Alarm Buzzer on page 12.)

5. Turn OFF the PowerCAUTION • Make sure that the alarm buzzer is not sounding before turning OFF

the power. If the alarm buzzer is sounding when turning OFF thepower, a sensor error (refer to page 13) may occur at the next use.
• In case of detecting high concentration gas, take in clean air forseveral minutes before turning OFF the power, to prevent to affectperformance.

After the detection, press the “POWER/SENSITIVITY” button for 3 seconds. The
buzzer sounds three times and the power will go OFF.
 Automatic Gas Exhaust Mode
If there is any gas remaining in the Gas Leak Detector when the power is turned
OFF, it will enter automatic gas exhaust mode. When it enters automatic gas
exhaust mode, the buzzer will sound once, “60” will be displayed on the LCD, and acountdown will start (59, 58...).
 Procedure after Sampling High Concentrations of Gas
If a high concentration gas of any in the following table is detected, leave the Gas
Leak Detector in clean air for a certain period of time before turning OFF the power.
Turning OFF the power immediately may affect performance. Also, a sensor error(refer to page 15) may occur.

Silent Mode (No Operation Sound)
CAUTION In silent mode, the Gas Leak Detector produces

no sounds at all except for errors and the battery
alarm. It will be impossible to confirm operation
audibly. Avoid using silent mode unless it isabsolutely necessary, and make sure to releasesilent mode after use.

Press the “BUZZER” button for 3 seconds when the power is
ON to enter silent mode.
- 11 -

Operation
sound indictor

Alarm soundindicator

L
1
2
3
4
H

SENS.

In silent mode, the operation sound and alarm buzzer will not
function and the operation sound and alarm sound indicators on
the LCD will not be displayed. However, the error alarm buzzer
and battery alarm buzzer (in unusable state) will sound. (Refer toError Displays on page 13 and to Battery Replacement on page
15.)
To release silent mode, press the “BUZZER” button for 3
seconds. The alarm buzzer cannot be turned ON or OFF unlesssilent mode is released. (Refer to Deactivating the Alarm Buzzer
on page 12.)NOTE

Silent mode will remain in effect even when the poweris turned OFF unless silent mode is released or unlessthe batteries are replaced.

Deactivating the Alarm Buzzer• When the power is turned ON again, the alarm buzzer
sound setting will be the same as before the power
was turned OFF. However, the alarm buzzer soundwill be turned ON after the battery replacement.
• The alarm buzzer sound cannot be turned ON or OFF
while in silent mode.

SENS.

2
3
4
H

Alarm soundindicator

L
1

The alarm buzzer for gas detection can be turned ON or OFF.
Press the “BUZZER” button when the power is ON, the buzzer willsound once and the alarm buzzer sound will be turned ON/ OFF.
The alarm sound indicator on the LCD will light (buzzer ON) or goout (buzzer OFF).

NOTE

L
1

SENS.

2
3
4
H

L
1

SENS.

2
3
4
H

Lighting the Backlight
The LCD backlight lights by pressing the “ZERO/RESTART PUMP/ BACKLIGHT”
button.
It also lights automatically for approximately 15 seconds when an error occurs.

NOTE

To extend the battery life, the backlight will not light up when the remaining
battery charge indicator is at the lowest level (battery outline only).

- 12 -

4. Error Displays
If an error occurs with the Gas Leak Detector, the error lamps will flash, an error will be
displayed on the LCD, and the buzzer will sound repeatedly. The major errors aredescribed in the following table. Take the corresponding action given in the table.
Error

Error Display

Cause

Solution

There may have beengas present when the
power was turned ON.

Turn ON the power again inclean air. If the same error
occurs even after turning ON
the power several times,
there may be a problem withthe sensor. Request repairs.

(Error lamps flash)Sensor Error(Error lamps flash)

Water or liquid may
have been sampled or
the inlet may beblocked.

Pump Error

Remove the water or liquid.
(Refer to Filter Element
Replacement on page 14.)
If the same error occurs evenafter pressing the “ZERO/RESTART PUMP/BACKLIGHT” button, thepump may have failed, orwater or liquid may have beenin the Gas Leak Detector.
Request for repairs.

(Error lamps flash)

Battery Alarm

The battery voltage is
too low to operate.

Replace batteries. (Refer toBattery Replacement on page
15.)

A problem may haveoccurred in the Gas
Leak Detector.

Request for repairs.

(Error lamps flash)

Detector Error- 13 -

5. Replacement of Consumable Parts
Filter Element Replacement
When the Filter Element is dirty or wet, or when the water or liquid is inside the Drain
Filter, clean out the Drain Filter and replace the Filter Element.
CAUTION • Do not replace the Filter Element while the Gas Leak Detector isoperating. Dust or other foreign matter may enter the Gas Leak
Detector.
• Mount the Filter Element correctly. If the Filter is not in place properly, it
will not function properly and will not be able to detect correctly.
• Attach the filter case securely. If the filter case is loose, water or otherforeign matter may leak into the Gas Leak Detector.
• If water or liquid reaches inside the Gas Leak Detector through the Filter
Element, it is in need of repair. It will not be able to detect correctly.

NOTE

1)

Do not push or poke the Filter Element. It may damage the waterproof structure.

Turn the filter case counterclockwise andremove it.
CAUTION If water, dust, or other foreign
matter is in the Drain Filter, be
careful not to enter into the Gas
Leak Detector.

2)

Remove the O-ring from inside the cap.

3)

Replace the Filter Element with a new filter.
NOTE

Drain Filter
Cap

Clean the inside of the cap and filter
case with a dry cloth as needed.
Remove water or liquid completely anddry the parts before replacing with a
new Filter Element.

CAUTION Make sure to attach FE-2 Filter
Element between the Cap andFilter Case.

4)

Filter Case

Attach the O-ring, put the filter case back
together and reassemble.

- 14 -

O-ringFE-2
Filter Element

Battery Replacement
NOTE•

Make sure to use size AA LR6 alkaline dry cell batteries.

When the remaining battery charge indicator changes to, the battery charge islow.
When the battery voltage drops and reaches to the final voltage, “E-B” (refer to Battery
Alarm on page 13) will be displayed on the LCD and the Gas Leak Detector will not beworking. Replace the batteries.
NOTE• Use the same kind of batteries.
• Always replace two batteries at the same time.
• Due to the characteristics of the batteries, the battery life will be shorter
when the surrounding temperature is lower than room temperature.

1)

Open the Velcro tape of the soft case and open the side zipper.

2)

Open the battery lid of the back of the Gas Leak Detector and install two newbatteries (size AA alkaline) as shown on the bottom of the compartment.

3)

Close the battery lid firmly.

4)

Zip the right and left of the soft case and close the Velcro tape.

Battery lid

Velcro tape- 15 -

6. Maintenance Check
The Gas Leak Detector is precision measuring equipment. Maintenance in accordancewith the following items is imperative for maintaining performance of the Gas Leak
Detector and ensuring safety.
In case of dropping the Gas Leak Detector or being wet by using under any conditions
other than the normal environment (refer to Cautions in 1. Introduction and Range in 9.
Specifications) perform a daily inspection or request a periodic inspection (will becharged).

Daily Check
Items to Check

Description

Alarm Function

Attach the Drain Filter and turn ON the power. After the warming up
operation, set the gas sensitivity level to “3” and confirm that thealarm lamp (red) flashes and the alarm buzzer will sound bysuctioning inspection gas for half a second.
If the alarm sound indicator is displayed on the LCD and the alarm
lamp (red) will not flash or the alarm buzzer will not sound, contact
your New Cosmos distributor.

Attachment

Check the Attachment for any wear or damage which may affectoperations. If any, replace with a new Attachment.

Filter Element

When the Drain Filter is dirty or wet, or the water or liquid is in the
Drain Filter, clean out the Drain Filter and replace the Filter Element.
(Refer to Filter Element Replacement on page 14.)

Battery Charge

If the remaining battery charge is low, replace the batteries. (Refer
to Battery Replacement on page 15.)

Airtightness

Turn ON the power and confirm that "E-P" (refer to Pump Error on
page 13) is displayed on the LCD by blocking the inlet of the
Attachment.If an error occurs, the airtightness is normal. Press therestart pump button.
If an error does not occur, the Drain Filter is damaged or the airtightof diaphragm is damaged. Replace the parts or request repairs.

Periodic Inspection
To maintain the accuracy of the Gas Leak Detector, request a periodic inspection at your
New Cosmos distributor or directly from New Cosmos at least once a year.

- 16 -

Consumable Parts, Replacement Parts, and Options

Part Name

Model

Part CodeRemarks

Filter Element (10pcs)

FE-2

59160022－

Drain Filter

DF-11459070018－

Inspection Gas

EG-10D

59150300

Attachment

AT-2B

20524489

Instruction Manual- 17 -For tubing and coupling7. Troubleshooting
Check for the items in the following table before requesting repair work.
* If operation is impossible, try again after removing all of the batteries for a few
minutes and insert them again.
■ Gas Leak Detector
ProblemCause

The power will not turn
ON by pressing the
POWER/SENSITIVITY
button.

The battery polarity isreversed.

Insert the batteriescorrectly.

Battery exhaustion.

Replace the batteries.

Displaying the error.

Refer to Error Displays.

Error Displays on page
13

The Gas Leak Detector
Release silent mode.
is in silent mode.

Silent Mode on page11

The alarm buzzer isturned OFF.

Deactivating the Alarm
Buzzer on page 12

The buzzer will notsound.

ActionTurn ON the alarm buzzer.

- 18 -

Reference
Battery Replacementon page 15

8. Warranty
New Cosmos Electric Company Limited (New Cosmos) offers the following as the sole andexclusive limited warranty available to Customer.
This warranty is in lieu of, and customer waives, all other warranties of any kind or nature,
expressed or implied, including without limitation, any warranty for merchantability or
fitness for a particular purpose. The remedies set forth herein are exclusive.
New Cosmos warrants to the original purchaser and no other person or entity (customer)that gas detection product supplied by New Cosmos shall be free from defects in materials
and workmanship for a period of one (1) year from the date of purchase. This warranty
does not include consumables, such as fuses, filters, etc. Certain other accessories not
specifically listed here may have different warranty periods.
After examination of allegedly defective product return to New Cosmos, with freight prepaid,should the product fail to conform to this warranty, customer’s only remedy and New
Cosmos’s only obligation shall be, at New Cosmos’s sole option, replacement or repair ofsuch non-conforming product or refund of the original purchase price of the
non-conforming product. In no event will New Cosmos be liable for any other special,incidental or consequential damages or losses of any kind whatsoever, including but notlimited to, loss of anticipated profits and any other loss caused by reason of non-operationof the product.
This warranty is valid only if the product is maintained and used in accordance with New
Cosmos’s instructions and /or recommendations. New Cosmos shall be released from all
obligations under this warranty in the event repairs or modifications are made by persons
other than its own or authorized service personnel or if the warranty claim results fromphysical abuse or misuse of the product.

- 19 -

9. Specifications
Model
Target Gas
Detection Principle

XP-703DⅢ
H2, AsH3, B2H6, SiH4, PH3
Hot-wire semiconductor sensor (Refer to page 21.)

Gas Sampling Method

Extractive type

Detectable Leak Rate

H2: 5.07 x 10-7, AsH3: 2.53 x 10-7, B2H6: 1.01 x 10-7, SiH4: 2.53 x 10-7,
PH3: 1.52 x 10-7

Detectable Gas
Concentration

H2: 1.0ppm, AsH3: 0.5ppm, B2H6: 0.2ppm, SiH4: 0.5ppm, PH3: 0.3ppm

Response Time

Within 10 seconds (for 300% of detectable gas concentration)

Rated Power Supply
Battery Life *1
Degree of Protection *2

Size AA alkaline batteries (LR6) x 2
Approx. 12 hours (with size AA alkaline batteries at 25 degrees C)
Equivalent to IP22 *3

Operating Pressure Range Atmospheric pressure (800 to 1100hPa)
Operating Temperature and
0 to 40 degrees C / less than 85% RH (with no condensation)
Humidity Range
Compliance

EMC directive ( 2014/30/EU/SI 2016 No.1091 ) and
RoHS directive ( 2011/65/EU+(EU)2015/863/SI 2012 No.3032 )Dimensions

Approx. 38 (W) x 130 (H) x 32 (D) mm (excluding protrusions)

WeightApprox. 190g (including batteries and soft case)*1: The battery life may vary based on the environmental conditions, operating conditions,storage time, battery manufacturer, etc.
*2: While the Gas Leak Detector is inside the soft case.
*3: “Equivalent to IP22” means that protection is provided against the approach of a finger toany hazardous product location (IP2x) and that protection is provided against thenegative influence on the product interior from water drops falling within 15° of
perpendicular on both sides of the exterior of the product for 2.5 minutes each in four
location (for a total of 10 minutes) (IPx2).

- 20 -

10. Detection Principle
 Hot-wire Semiconductor Sensor
When combustible gases react with oxygen absorbed on the surface of thesemiconductor, free electrons increase in the semiconductor. As a result, theresistance of the semiconductor decreases. This resistance change is read asdifferential voltage using a bridge circuit for gas detection purpose. This type of
sensor is very sensitive and thus suitable for low concentration gas detection.

- 21 -

Additional copies of this instruction manual may be purchased.
Contact New Cosmos or its authorized representative for ordering.
The contents of this manual are subject to change without notice.

Authorized representative:

Manufacturer:
NEW COSMOS ELECTRIC CO., LTD.
2-5-4 Mitsuya-naka, Yodogawa-ku,
Osaka 532-0036, Japan
www.newcosmos-global.com

XP-703DⅢCEET(04)