GasLab SAN-20 User manual

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Personal Oxygen

Safety Monitor

User Manual

SAN‐20

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TableofContents

INTRODUCTION.....................................................................................................................................3

FEATURES................................................................................................................................................3

APPLICATIONS.......................................................................................................................................3

THEORYOFOPERATION.....................................................................................................................4

MONITOR..................................................................................................................................................4

LCDDISPLAY...........................................................................................................................................4

OPERATION.............................................................................................................................................5

1.Powerbutton .............................................................................................................................5

2.TemperatureUnitsSwitchingButton ...........................................................................................5

3.MenuandConfigurationStatus.........................................................................................................5

4.Calibration........................................................................................................................................6

5.AlarmThreshold...............................................................................................................................6

6.AutomaticAtmosphericPressureCompensation...............................................................................6

7.Mandownalarm..............................................................................................................................7

7.ResetButton.....................................................................................................................................7

MAINTENANCE.......................................................................................................................................7

Calibration............................................................................................................................................7

CleaningandStorage............................................................................................................................7

SPECIFICATIONS....................................................................................................................................8

TROUBLESHOOTING.............................................................................................................................9

OXYGENRECOMMENDEDLEVELS....................................................................................................9

SUPPORT..................................................................................................................................................9

Warranty..............................................................................................................................................9

ContactUs............................................................................................................................................9

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INTRODUCTION

CongratulationsonyourpurchaseofthisCO2MeterSAN‐20PersonalSafety02Monitor.

CO2MeterSAN‐20isapersonalsafety02monitordesignedtomonitorambientoxygenlevelsinrealtime.

Itisdesignedtoprotectworkersinconfinedspaces.SAN‐20isshippedfullytestedandfactorycalibrated

and,withproperuse,willprovideyearsofreliableservice.

FEATURES

 Fluorescence‐basedOpticalOxygenSensor

 Highaccuracyandlonglife

 Hasnegligiblecrosssensitivitytoothergases

 Audible,visualstrobeandvibratingalarms

 LargeLCDdisplay

 Ruggeddesignwithprotectiverubberenclosure

 Heavydutymetalclip

 Frontfacingsensorunit

 RechargeableBattery4.2v,1500mAh

 MicroUSBcableandwallUSBcharger

 RechargeableLi‐Ionbattery–18+hourspercharge

 Mandownalarm‐leveragingaccelerometertechnology

 Calibrationmethods:AmbientAir(20.9%)

 AutomaticatmosphericpressurecompensationforO2concentrations

 Noover‐exposureornegativememoryeffects

APPLICATIONS

 StoredGasesinConfinedSpaces.Industrialuseofstoredorpipedgasescreatesthepossibilitythat

oxygeninbreathableaircouldbedisplacedbygasessuchasnitrogen,helium,argonorcarbondioxide

resultinginahazardouscondition.

 Underground Tunnels, Caves or Mines. Over time oxygen can be displaced by other naturally

occurringgaseslikecarbondioxide,carbonmonoxide,ammonia,methane and the oxidation of

sulfidesresultinginloweroxygenlevelsthanisrequiredforpersonalsafety.

 CombustioninConfinedSpaces.Combustionfirstusesuptheavailableoxygen,thenproducespartial

oxidationofcarbon(carbonmonoxide),hydrogencyanide,andnitrogenoxides.Hydrogengascan

alsobeproducedanddisplaceoxygen.

Pleasetakeamomenttoreadtheseinstructionsbeforeuse.Theywillprovideyouwithallthe

necessaryinformationforthecorrectuseofyouroxygenmonitor.

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THEORYOFOPERATION

TheSAN‐20PersonalSafetyO2Monitordeterminestheconcentrationofoxygeninairsamplesusingthe

principleoffluorescencequenchingbyoxygen.Airreachesthesensorbydiffusingthroughtheopenings

oftheunit.Normalairmovementisenoughto carrythe sample tothesensor.Ithas negligible cross

sensitivitytoothergases.Themonitorbenefitsfromlowpoweroperationwhileprovidingamuchlonger

lifetimeduetothenon‐depletingsensingprinciple.

MONITOR

1. Visualalarm/strobe

2. Frontfacingsensor

3. Chargingindicator

4. LCDdisplay

5. Powerbutton

6. Temperatureunits

switchingbutton

7. USBcharginginlet

(bottomside)

8. Heavydutymetalclip

9. Factoryresetbutton

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LCDDISPLAY

1. Dangerlowoxygenalarmindicator

2. Warninghighoxygenalarmindicator

3. Batteryindicator

4. O2concentration

5. O2concentrationunits(%)

6. Calibrationicon

7. Mandownalarm

8. AirTemperature

9. Temperatureunit

(Fahrenheitorcentigradedegrees)

10. %RelativeHumidity

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OPERATION

Note:LCDBacklightwillturnoffautomaticallyafter5secondsofinactivity.WhenLCDbacklightisoff,

presseitherbuttontoturnonthebacklight.Itwillnotturnthemonitorofforchangethe°C/°Fsetting.

1.Powerbutton 

a. WhentheMonitoristurnedoff,press toturnontheunit.

b. WhentheMonitoristurnedon,press for3secondstoturnofftheunit.

Whentheunitisfirstturned on, it performs5secondscountdownforMonitorwarmup,thenenters

normaldisplaywithcurrentO2,temperature,andhumidityreadingsdisplayed.Themonitorstartstaking

measurementswhenpoweronandupdatesreadingsevery2seconds.Thedevicecan’tshutoffthealarm,

ifpoweroffwillcomebackinalarmmodeandmustdelay.

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2.TemperatureUnitsSwitchingButton 

Press shortlytoswitchtwotemperatureunits:°Fand°C.

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3.MenuandConfigurationStatus

Bypressingthetemperatureunitswitchingbutton for5seconds,theunitentersintoMenustatus.

There are three menu items by pressing the temperature unit switching button shortly to loop

switchingbetweenAIR,AON/AOFFandE(exit).

Themenuitemsaredescribedinthefollowingtable.

MenuItems FunctionalDescription

AIR “AIR”meansAmbientAirCalibration.Userpressesthepowerbutton to

implementAmbientAirCalibration(20.90%).

AON/AOFF

SettingMandownalarmfunctionon/off.Userpressesthepowerbutton

toswitch“AON”(allowingMandownalarm)or“AOFF”(prohibitingMan

downalarm).

E Userpressesthepowerbutton toexitthemenustatus.

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4.Calibration

ThereisonecalibrationmethodforAmbientAirCalibration(20.90%).

Bypressingthetemperatureunitbutton for5seconds,themonitorwillenterO2calibrationmode.

While in calibration mode, press the temperature button quickly to switch to AIR (Ambient Air

Calibration).Pressthepowerbutton toconfirm.

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5.AlarmThreshold

TheSAN‐20isequippedwithaudible,visualandvibrationalarmstoalertyouwhentheambientoxygen

concentrationexceedseitherofthetwofactorypresetalarmlevels:

 DangerLowOxygenAlarm:19.5%‐LEDwillflashandaudiblealarmwillsound3x/sec.

 WarningHighOxygenAlarm:23.5%‐LEDwillflashandaudiblealarmwillsound2x/sec.

Toalertusersinnoiseenvironment,aninnervibratorwillvibrateat1HzinbothOxygenAlarm.

Normal atmosphere contains between 20.8%and 21% oxygen. OSHA defines any atmosphere that

containslessthan19.5%oxygenas“oxygendeficient”andanyatmospherethatcontainsmorethan23.5

percentoxygenas“oxygenenriched.”Theselevelsarefactorysetandcannotbechanged.

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ATTENTION! ‐ IF A WARNING OR DANGER ALARM IS

TRIGGEREDWHILEUSINGTHEINSTRUMENTASASAFETY

MONITOR LEAVE THE AREA AND SEEK FRESH AIR

IMMEDIATELY. REMAINING ON SITE UNDER SUCH

CIRCUMSTANCESCANCAUSESERIOUSIMPAIRMENTOR

EVENLEADTODEATH.

6.AutomaticAtmosphericPressureCompensation

TheO2measurementisaffectedbyatmosphericpressureoraltitudechanging.Whenusersareathigh

altitude,compensationshouldbemadetoassuremaximummonitoraccuracy.

ThisdevicehasautomaticatmosphericpressurecompensationforO2concentrationsbymeansofabuilt‐

inbarometricpressuresensor.



7.Mandownalarm

Fallingbybreathingdangerousgasescancauseseriousinjuryandevenfatalitytoworkers.IftheMan

downalarmfunctioninSAN‐20isseton,SAN‐20candetectfallsandsendamandownalertwhichwill

activatetheaudibleandvisualalarmsandalertotherpeopleinthearea.



Theman‐downdetectionusesathree‐axisaccelerometertoautomaticallymonitortheuser’smovements

inordertoidentifyasuddenfall/impactandalackofmovementforaperiodof6seconds.

Oncealert,peoplecanturnoffthecurrentman‐downalarmbypressinganyoneofthetwobuttons.



7.ResetButton

Userscanresettheunitbypushingaresetbuttonthroughaholeonbackofshell.



MAINTENANCE

Calibration

TheSAN‐20comespre‐calibratedfromthefactory.However,theO2sensorshouldbecalibratedatleast

onceayear,orasdescribedinyourcompany’ssafetyprocedures.Youcanperformthecalibrationyourself,

oryoucanreturnittoCO2Meterforfactorycalibrationatanominalfee.

Thetemperatureandhumiditysensorsdonotrequirecalibrationandshouldremainaccurateforthelife

ofyourunit.

CleaningandStorage

Applysparinglywithasoftclothandallowtodrycompletelybeforeusing.DonotusesoaporAlcohol

cleaning.Donotusearomatichydrocarbonsorchlorinatedsolventsforcleaning.



SPECIFICATIONS

DeviceSpecifications

OperatingEnvironment 32°F~122°F(0°C~50°C),<95%RHnon‐condensing

Storage 14°F~140°F(‐10°C~60°C),<99%RHnon‐condensing

PowerSupply Li‐ionbattery(4.2V,1500mAh),MicroUSBcablew.WallUSBcharger

Dimensions 3.9x2.0x1.7Inch(98x50x42mm)

Weight 4.76oz.(135grams)



O2SensorSpecifications

MeasurementRange 0to25.0%vol.

Resolution 0.01%vol.

ResponseTime <15s

Accuracy Betterthan2%FS

Lifetime >5years



TemperatureSensorSpecifications

TemperatureRange 14~140°F(‐10.0~60.0°C)display

DisplayResolution 0.1°F(0.1°C)

DisplayOptions °F/°Cswitchable

Accuracy ±0.9°F(±0.5°C)

ResponseTime 5~30seconds(devicemustequilibratewithenvironment)



RelativeHumiditySensorSpecifications

MeasurementRange 0.0~99.9%RH

DisplayResolution 1%RH

Accuracy ±4.5%RH

ResponseTime <8secondsfor63%ofstepchange





TROUBLESHOOTING

Symptom/Issue PossibleCause/Resolution

Cannotpoweron PressthePowerButtonformorethan5seconds

CheckthattheLi‐ionbatteryischarged

Ifmonitorischargedbutwillnotturnon,contactsupport

Readingdoesnotchange Infreshair,youwillrarelyseeoxygenlevelschange.Thisisnormal.



OXYGENRECOMMENDEDLEVELS

 >23.5% Oxygenenriched,presentssignificantfireandexplosionrisk

 20.8‐21% Normaloxygenlevelinfreshair

 19.5%  Lowestsafeoxygenlevellimit(OSHA) 

 <16%  Headache,nausea,difficultyperformingmanualtasks

 <12%  Difficultybreathing,impairedcoordinationandperception

 <10%  Poorjudgementandbluishlips

 <8%  Fatalwithinminutesifnottreated

 <6%  Fatalin40seconds

SUPPORT

Warranty

The monitor comes with a one (1) year warranty starting from the date the monitor was shipped

to the buyer. For more information visit our website: https://GasLab.com/pages/terms-conditions

ContactUs

We are here to help! For information or technical support, please contact us.

[email protected]

(386) 872-7668

www.GasLab.com

GasLab, Inc.

131 Business Center Drive Ste 3

Ormond Beach, FL 32174 USA

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