Sensit HXG-3 Manuale utente

SENSIT® HXG-3

Combustible Gas Detector

INSTRUCTIONMANUAL

7-11 UL V4

Approved UL913, For Class 1,

Division 1, Groups C & D

hazardous locations when used

with alkaline batteries.

7WA6

Read and understand

instructions before use.

SENSITHXG-3

Warning:

To prevent ignition

of flammable or

combustible

atmospheres,

disconnect power

before servicing.

Sensit® is a registered trademark of J And N

Ex-Ox-Tox Gasdetectie

Westerdreef 5V

2152 CS Nieuw-Vennep

Telefoon: 0252 620885

E-mail: [email protected]l

Website: www.exoxtox.nl

CONTENTS

Page # 1. Accessories and Parts

2. General Description

2. Specifications

3. Product Features

5. Sensor Type

5. Battery Installation

6. Adjustable Features - Factory Only

7. Operation and Use

10. Calibration Check

11. Menu

16. Calibration

18. Warranty and Repair Policy

ACCESSORIESANDPARTS

Standard Accessories (included)

Carrying Case 872-00001 Wrist Strap 360-00040

Filter Cap 365-00045

Instruction Manual 750-00023 Alkaline Batteries 310-00004

Optional Accessories and Parts

Extension Adapter 870-00012

Printer 870-00004

PC Interface with Software 870-00008

Calibration Kit – Methane 881-00015

Calibration Kit – Pentane 881-00077

LEL Sensor 375-2611-01

This safety symbol is used to indicate a potentially hazardous situation

which, if not avoided, may result in minor or moderate injury.

CAUTION NOTICE

TheSensit®HXG-3isdesignedtodetectcombustiblegases.All

Sensit®HXG-3instrumentsincorporateanadvancedlowpower

semiconductorsensortomeasurecombustiblegasesinLEL(Lower

ExplosiveLimit) range.Allmeasurements arein 0.1%LELincre-

ments. The ppm display is simultaneously shown in 1 or 10ppm

increments (resolution). An automatically backlit display shows

allgasconcentrationsbeingmeasured.LEDslocatedonthefront

oftheinstrumentindicatepresetvisualwarningsof increasedgas

concentration.

Audibleandvisualalarmswarn theoperatorofhazardouscondi-

tionsbeingsensed.Thepresetalarmsareindicatedbyaredflashing

LED, display indicator and alarm sound. The combustible gas

alarmispresetfrom50%LEL(2.5%methaneor0.75%pentane).

TheSensit® HXG-3 instrumentis approved byUnderwritersLabo-

ratories to UL913, for Class 1, Division 1, Groups C & D hazardous

locations when used with Duracell™ MN1400BK or equivalent al-

kaline batteries.

GENERALDESCRIPTION

SPECIFICATIONS

SENSORSPECIFICATIONS

TYPE RESOLUTION RANGE ACCURACY

Leak 1ppm or 10ppm 0-50,000ppm ±10%

LEL 0.1% 0-100% ±10%

PRODUCTSPECIFICATIONS

Size: 11.5” x 3” x 2.32” (292 x 76 x 69 mm)

Weight: 1.2 lbs.

Operational Temp: 0 to 120° F

Storage Temp: -20° to 132° F

Battery Life-Alkaline: approximately 25 hrs. continuous

PRODUCT FEATURES continued from page 3

The tick can be easily heard with the speaker located in the

back of the instrument.

TheInfraredCommunication windowislocated ontheright side

to allow the Sensit® HXG-3 instrument to download: Calibra-

tiondata;CommunicatewithSmart-Cal CalibrationStation;PCi-

2s Computer Interface; Readings the operator has elected to

saveto theinstrument’s on-boardmemory.

A flexible gooseneck is used to assist in locating the source of

gas leaks and remote sampling.

Atwo linedisplaycontinuously updatesthe operatorofall avail-

able gas concentrations and alarms simultaneously as well as

indicates battery power. Below the display is a series of LEDs

thatare preset toindicate combustiblegasconcentrations. Dur-

ing an alarm condition the red LED on the right side will flash

andan audiblewarning willsound.

There are 3 operational button pads on the front of all Sensit®

HXG-3instruments.

•POWER/MUTEBUTTON(A):OperatethePOWERandMUTE

feature and exit menu items.

• MENU BUTTON (B): Use to enter, change and select menu

items.

•SAVE/ZEROBUTTON(C): Usesave data feature,zero

sensor, scroll and change menu items.

SENSITHXG-3

Sensit® HXG-3 instruments are constructed of durable ABS

plastic to withstand the rigors of field use.

Incorporated in the hand grip area is the battery compartment.

AllSensit® HXG-3 instruments require 3“C” typealkaline bat-

teries. Duracell MN 1400 batteries provide approximately 25

hours of continuous use. A thumbwheel is located on the right

side of the instrument to activate the audible tick sound that

helpsin locatingthe sourceof agas leak.This tickis generated

by using specialized circuitry in combination with the LEL sen-

sor located at the end of the gooseneck assembly.

PRODUCTFEATURES

BACKLIT

2 LINE DISPLAY

SPEAKER

(ON BACK) WARNING LED’S

16”FLEXIBLE

GOOSENECK

IR COMMUNICATION

(DOWNLOADING)

SOLIDSTATE

SENSOR

PUSHPAD

BUTTONS

BATTERY

COMPARTMENT

(Continued on page 4)

THUMBWHEEL FOR

TICK ADJUSTMENT

ADJUSTABLEFEATURES (FACTORYONLY)

SessionSaves 1-100 6

Alarm-LEL 0-100% 50%

PPM Display Option 1ppmor10ppm 10ppm

CalDueInterval 30, 45, 60,

90, 180,360 30 days

ShowSession Log* 1-100 6

Warm-upTime 10-30sec. 30 sec.

PurgeTime 1-60 sec. 0 sec.

* Can be disabled

MENU ITEMS RANGE DEFAULT

If you do not use your right hand to hold the bottom of the bat-

tery compartment the batteries can come out. Observe the po-

larity markings on the inside of the battery holder. Improper in-

stallation will cause the instrument not to operate. Replace the

battery sleeve and allow the locking tab to snap into position.

NOTE: Improper battery installation will disable the instru-

ment.

Checkto besurethe handleissecure tothe instrumentbodyby

gently pulling the handle away. The handle will remain firmly in

place if a proper connection is made.

BATTERYINSTALLATION/REPLACEMENTContinuedfrom pg5

Combustible Gas Sensor

All Sensit® HXG-3 instruments incorporate a highly sensitive

semiconductor type sensor. The function and accuracy of the

sensoraremonitored andcontrolledbyspecialized circuitryand

amicroprocessor.Thissensor iscapableofmeasuring concen-

trationsof 10ppm ofmethane (natural)gas up to100% LEL.

SENSORTYPE

BATTERYINSTALLATION/REPLACEMENT

CAUTION: Always change batteries in an environment

free of combustible gases.

Batteryreplacement is necessarywhen the displayreads BAT

LOW,anaudiblealarmsoundsandthegreenreadyLEDflashes.

When the instrument remains in BAT LOW, a countdown will

appear starting at 300 seconds (5 minutes) which is the maxi-

mumtime remaining to shutdown.

Removethe batterysleeve coverby depressingthe lockingtab

onthefront ofthehandle withacoin orflatobject andpullingthe

handle away from the top or display area of the instrument.

Place 3 approved batteries into the battery holder. For best re-

sults hold the battery compartment so that it lays in your right

hand.With your lefthand installthebattery thatgoestoward the

front first, the battery that is in contact with the rear spring sec-

ondandfinally insertthethird batteryinthe centerbyforcing the

secondbattery suchthat thespring compressesandallows the

batteries to go into place.

(Continued on page 6)

7(Continued on page 8)

CAUTION: Always start any Sensit® HXG-3 in a gas

free environment to insure a proper zero.

1. Push and hold the power button (A) until the display illumi-

nates.

2. If the display fails to illuminate or BAT LOW is shown on the

displayreplace thebatteries.There isroom inthecarrying case

to keep an extra set of alkaline batteries.

3. During successful start-up the instrument will display:

a.Productname andmodelversion

b.System check

c.Dateand time

d.GasType

e.CAL PAST DUE when calibrationis overdue

f. Warm-upcountdown

g.AUTOZERO indicatingthe zeroingofthe sensor

h.Workingdisplay

NOTE:Ifasensor iscompletelyinoperableorimproperly zeroed

atstartup, thedisplay willshow ERROR LEL followedbyFAIL.

OPERATIONANDUSE

(continued on page 9)

OPERATION AND USE continued from page 7

4. Model 3.30 displays LEL% only. Model 3.35 displays LEL%

and ppm. All LEL readings have a resolution of 0.1% LEL or

50ppmmethane. Allppm readingshavearesolution of1ppmor

10ppm and are displayed simultaneously with the LELdisplay.

5. It may be necessary to manually zero the instrument based

oncompany practicesand environmentalconditions.

CAUTION: Zeroing should be done in a gas free envi-

ronment only.

6. When testing high areas or overhead lines the use of the

optionalextensionadapter willallowa broomhandle or painters

stick to extend the instrument to the area where sensing must

beaccomplished.This slidesontothe batterysleeveand isheld

in place by the locking nut assembly.

7. Whena gasis sensedthe displaywillupdate. Additionally, a

seriesofLEDs onthefront oftheinstrument willilluminatewhen

the preset concentrations of the calibration gas are reached. If

an alarm condition exists, based on a preset alarm point, the

red (HAZ 3) LED will flash and the alarm will sound.

Thepreset levels of the LED warninglights are:

AmberLED/Low 5 - 9.9% LEL methane

RedLED/Haz1 10.0 - 24.9% LEL

RedLED/Haz2 25.0 - 49.9% LEL

RedLED/Haz3 50.0 - 100% LEL

(Continued on page 10)

OPERATION AND USE continued from page 8

Caution: These instruments have cross sensitivities to

a variety of gases.

8. During an alarm condition (factory default at 50% LEL) the

displaywill flash,LED HAZ3 willflash andanaudible alarmwill

sound indicating a potentially unsafe environment. To disable

the audible alarm press and release the mute button (A). To

enablethe alarm pressand release itagain.

9. To assist in locating the source of small combustible gas

leaks or surveying areas outdoors or indoors, rotate the

thumbwheel located on the right side of the instrument until a

steady ticking sound is heard. Note: There is no warm-up for

this feature as it uses the LEL sensor that is already operating.

Movethe sensor towardthe area suspectedof leakage.As the

sensormovescloserto aleaksourcethetick willincrease.When

the tick becomes a steady tone rotate the thumbwheel in a

clockwise direction while keeping the sensor in the same posi-

tion.This willslow downthe tickand allowthe operatorto finda

higherconcentration usingthe same procedure.Ifthe tickgoes

away you have moved away from the leak or there is no more

gaspresent. Forbest resultsalways usethe leak detectorprior

to using any liquid leak detection fluids as these sensors will

detecttheir presence.

10.At any time the operator may save the readings on the dis-

play by pressing the SAVE/ZERO button (C). This will save all

readingsfor downloadat a latertime.

OPERATION AND USE continued from page 9

The memory is factory set to store 6 events. This can be ad-

justed from 1-15 at the factory. The most recent save is first

duringdownload.

11. FollowingFederal, State,Municipaland/orCompany proce-

dures move to the areas where gas readings are suspected or

must be tested. During sampling the respective readings may

change.Audibleand visualalarms willactivatewhen thepreset

limitsare reached.

12. When being used in dark areas an automatic backlight will

illuminate the display.

13. To turn instrument off, push and hold the power button (A)

for 5-6 seconds until POWER DOWN appears on the display.

To verify the accuracy of any Sensit® HXG-3, it must be ex-

posed to a known concentration of test gas. Any sensor that

does not meet the specifications listed in this manual may re-

quire calibration or replacement. A calibration check does not

update the calibration due date. Full calibration is required to

update these times.

Acalibration past duemessage willilluminateduring warm-upif

calibrationhas notbeenperformed peryour companyspecified

interval.Anytimeitis suspectedtheSensit® HXG-3 isnotwork-

ingproperly, checkcalibration.

CALIBRATIONCHECK

(continued on page 13)

MENU continued from page 11

POWER/MUTE button (A) will reenter the USER MENU. Use

the SAVE/ZERO button (C) at this time to scroll to another

menufunction. Pressing the POWER/MUTE button (A) willre-

turn the instrument to the working display.

CALIBRATION (see page 16 for complete instructions)

From the working display access the user menu by pressing

andholding theMENU button(B)until thetop lineof thedisplay

reads USER MENU. Press and release the SAVE/ZERO but-

ton (C) until the bottom line displays CALIBRATION.

POWER OFF

Fromtheworkingdisplayaccessthemenubypressingand hold-

ing the MENU button (B) until the top line of the display reads

USERMENU.PressandreleasetheSAVE/ZERObutton(C)until

the bottom line displays POWER OFF. Press the MENU button

(B). Use the SAVE/ZERO button (C) to increase the number of

minutes of run time and the MENU button (B) to reduce them.

Settingthetimerto0willcausetheunittoalwaysremainon.After

adjustingthenumber,pressandreleasetheleftbutton(A)tosave

the adjustment. Use the SAVE/ZERO button (C) at this time to

scrolltoanothermenufunction.PressingthePOWER/MUTEbut-

ton (A) will return the instrument to the working display.

SETCLOCK

From the working display access the user menu by pressing

andholding theMENU button(B)until thetop lineof thedisplay

readsUSER MENU.Press andreleasethe SAVE/ZERObutton

(C)untilthe bottomlinedisplays SET CLOCK.Press theMENU

button (B). The day will flash upon entering the SET CLOCK

11 (Continued on page 12)

TheSensit® HXG-3 has severalfeatures inthe user menu.

Theseinclude:

PRINT MENU: SESSIONLOG - print data thatwas saved.

CAL LOG - print last 4 successful calibrations.

SMARTCAL- access to Smart-Cal Calibration Station.

CALIBRATION: Calibrate LELand accessSmart-Cal

CalibrationStation.

POWER OFF: Set the automatic shut off timer in minutes.

SET CLOCK: Set date and time.

SHOW CAL LOG: Display last calibration.

SHOW SES LOG: Display saved gas reading data with date

and time.

BUMPTEST: Perform automatictest forresponse tominimum

of80% of calibrated gas valuewithin 30seconds.

SMART-CAL: Accessautomatic calibrationstation.

GAS TYPE: Selectnatural/methane orpentane asprimary gas

to be sensed.

PRINTMENU

From the working display access the user menu by pressing

andholding theMENU button(B)until thetop lineof thedisplay

reads USER MENU. The bottom line will read PRINT MENU.

Press the MENU button (B) to access the print menu options.

UsetheSAVE/ZERObutton (C)toselect theCAL LOG orSES-

SIONLOG.

At this time prepare the printer.Aim the IR window on the right

sideof the instrumentto theIR receptoron the printer. Position

theinstrument 6-12” fromthe IRreceptor and pressthe MENU

button (B). Downloading will begin immediately. When the dis-

play no longer reads PRINTING... use the SAVE/ZERO button

13 (Continued on page 14)

MENU continued from page 12

option. The SAVE/ZERO button (C) advances to the next item

are based on US time and date settings using a 24 hour clock.

After adjusting all numbers press and release the POWER/

MUTEbutton (A)to savethe adjustment.Use theSAVE/ZERO

button (C) at this time to scroll to another menu function in the

USER MENU. Pressing the POWER/MUTE button (A) will re-

turn the instrument to the working display.

SHOW CAL LOG

From the working display access the user menu by pressing

andholding theMENU button(B)until thetop lineof thedisplay

readsUSER MENU.Press andreleasethe SAVE/ZERObutton

MENU button (B) and the display will show the last gas cali-

bratedand calibration date.Pressing any buttonwill return the

display to the user menu. Pressing the POWER/MUTE button

(A) will return the instrument to the working display.

SHOW SES LOG

From the working display access the user menu by pressing

andholding theMENU button(B)until thetop lineof thedisplay

readsUSER MENU.Press andreleasethe SAVE/ZERObutton

MENU button (B). Use the SAVE/ZERO button (C) to scroll to

the saved session you wish to review. SESSION 1 is the most

recent data saved. Pressing the MENU button (B) will display

the date and time of that session. Pressing the MENU button

(B)againwill displaythegas reading.PressthePOWER/MUTE

(Continued on page 15)

MENU continued from page 13

(B)againwill displaythe gasreading.Press thePOWER/MUTE

button (A) to return to SESSION(#) and pressing the SAVE/

ZERO button (C) will allow you to scroll all previously saved

SESSIONS. Pressing the POWER/MUTE button (A) 2 times

willreturnyouto theUSERMENU.PressingthePOWER/MUTE

button (A) once more returns you to the working display. The

number of stored session log saves is factory set at 6. It can

store up to 100 by changing a factory setting (contact SENSIT

TECHNOLOGIESfor instructions).

BUMPTEST

Fromtheworkingdisplayaccessthe menubypressingandhold-

ing the MENU button (B) until the top line of the display reads

USERMENU.PressandreleasetheSAVE/ZERObutton(C)until

thebottomlinedisplaysBUMPTEST.Prepare50%LELmethane

(orpentane)calibrationgasforapplication totheinstrument.

Applycalibration gastothe instrumentsensor. PresstheMENU

button(B).The readingmustread80% ofcalibratedvaluewithin

30 seconds. The reading is on the left side and the timer is on

the right side of the display.

If the instrument passes, the display will read BUMP TEST

PASSES, a beep will sound and the unit display will automati-

cally return to the user menu. If the instrument fails, the display

willreadBUMP TEST FAILED and abeepwillsound. Repeated

bump test failure indicates possible need for instrument repair.

Contact JAnd N for instructions.

At the end of any bump test press the POWER/MUTE button

(A) to return to the working display.

MENU continued from page 14

SMART-CAL (methane calibration only)

From the working display access the menu by pressing and

holding the MENU button (B) until the top line of the display

readsUSER MENU.Pressandreleasethe SAVE/ZERObutton

instrumentinto thecradleprovided onthe leftsideof theSmart-

CalCalibration Station.Attachthetubing fromthe stationto the

instrument sensor. Press the MENU button (B). The display

will show SMART CAL Communicating. Select the test from

the Smart-Call Station to be performed.At the end of the test

the instrument will beep 3 times and display PASS or FAIL.

Retrythe testif necessaryby pressing the proper buttonon the

Smart-CalStationagain. Pressandrelease the POWER/MUTE

button(A) toreturn theworking display. Removethetubing and

return instrument to service or send instrument to the proper

placefor repair percompany procedures.

SHORTCUT TOACCESS SMART-CAL: Place the instrument

intothe cradle providedon theleftside oftheSmart-Cal calibra-

tion Station. Attach the tubing from the station to the instru-

ment sensor. While in the working display press the POWER/

MUTEbutton (A) for 2-3seconds and release.The display will

show SMART CAL Communicating. Perform all tests as de-

scribed in the SMART CAL section.

GASTYPE

From the working display access the user menu by pressing

andholding theMENU button(B)until thetop lineof thedisplay

(Continued on page 16)

GAS TYPE continued from page 15

(continued on page 17)

reads USER MENU. Press and release the SAVE/ZERO

BUTTON(C)until thebottomlinedisplays GASTYPE.Pressthe

MENU BUTTON (B). Press Button (B) or Button (C) to change

betweenPEN(Pentane) orNAT(Natural orMethane) asprimary

gas to be sensed. Press Button (A) to confirm selection is made.

CALIBRATION

Calibration is the process of setting the readings of the instru-

mentto equalthe value ofcertified calibrationgases.

NOTE: Using calibration kits other than recommended by

SENSIT TECHNOLOGIES may cause inaccurate readings.

Repairs are required if any sensor fails to calibrate. Con-

sult SENSIT TECHNOLOGIES for details.

NOTE: When calibrating, the numbers shown on the dis-

play represent the numbers seen by the microprocessor

and should not be confused with actual gas readings.

Combustible Gas Calibration Procedure (50%LEL Methane

or 50%LEL Pentane)

The calibration gas used for this procedure should match the

Gas Type selected for your instrument. Refer to Gas Type in

the Menu section of this manual. Instruments set to methane

will calibrate with 50% LEL methane/air while those set to

pentanewill calibratewith 50% LELpentane/air.

Priorto calibrationallow theinstrument tooperate for5 minutes

in a gas free environment. Manually zero the instrument by

CALIBRATION continued from page 16

press and holding the (C) button until the display shows

AUTOZERO. Preparethecorrespondingcalibrationgas(methane

orpentane),regulatorandadapter.

From the working display access the USER MENU by pressing

and holding the (B) button until the top line of the display reads

USER MENU. Press and release the (C) button and the bottom

lineshouldreadCALIBRATION. Pressandreleasethe(B)button,

the top line will read CALIBRATION and the bottom line will read

LEL 50%.

Applythe appropriate calibration gas foryour instrumentsset-up

andpressthe(B)buttontostarttheautomatedcalibrationprocess.

If calibration is successful, the display will flash DATA SAVED

before automatically returning to the calibration menu. Pressing

the(A)buttonrepeatedlywill returntheinstrumenttotheworking

display. Remember to disconnect and shut off the gas supply.

Ifcalibrationisunsuccessful,thedisplaywillflashBADCALbefore

returning to the calibration menu. In the event of a BAD CAL,

remove the instrument from service and contact SENSIT

Technologiesforassistance.

NOTE:Calibrationwill be basedonthe last successfulcalibration.

The calibration due date will not be updated until successful

calibrationhas occurred.Anyinstrumentthatdoes notcalibrate

requiresservice.ContactSENSITTECHNOLOGIESfordetails.

WARRANTYANDREPAIRPOLICY

Your Sensit® HXG-3 is warranted to be free from defects in

materials and workmanship for a period of two years after pur-

chase(excluding sensor,calibration andbatteries). Ifwithin the

warrantyperiod,yourinstrumentshouldbecomeinoperativefrom

suchdefects, the unitwill berepaired orreplaced at ouroption.

This warranty covers normal use and does not cover damage

whichoccursin shipmentorfailure whichresultsfromalteration,

tampering,accident, misuse,abuse, neglector impropermain-

tenance.Proof ofpurchase may berequired beforewarranty is

rendered. Units out of warranty will be repaired for a service

charge.Internal repairor maintenancemust becompleted bya

SENSITTECHNOLOGIES authorizedtechnician. Violationwill

void warranty. Units must be returned postpaid, insured and to

the attentionof theService Dept. forwarranty orrepair.

This warranty gives you specific legal rights and you may have

other rights which vary from state to state.

Ex-Ox-Tox Gasdetectie

Westerdreef 5V

2152 CS Nieuw-Vennep

Telefoon: 0252 620885

E-mail: [email protected]l

Website: www.exoxtox.nl

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