SENSIT Technologies RAMP Quick guide

REMOTE AFFORDABLE MULTI-POLLUTANT SENSOR
SENSIT® RAMP
SENSOR OPERATION
AND CONFIGURATION GUIDE
READ AND UNDERSTAND INSTRUCTIONS BEFORE USE
851 Transport Drive
Valparaiso, IN 46383-8432
Phone: [phone]
219 465 2700
Fax: [phone]
Email: [e-mail]
Web: www.gasleaksensors.com


RAMPSensorOverview


SensorSpecifications
General
Overview Parameter
Weight Baseunit:7.5lbs
Dimensions Fullyassembledwithoutanemometerorantenna1
 DxWxH(5”x10”x12”)
Mounting Attachedmountingflanges
VoltageRequirements 18V–24VDCCharging(wiredadapterorsolarpanel)
CurrentRequirements 2Amaxcurrentdrawwhencharging
OperatingRuntime 3‐15daysbatterybackup2
OperatingTemp ‐20°Cto50°C
DataOutputs  Digitalwiredoutput(3.3VTTL‐USB)
 Wireless(3GCellularIncluded)3
 Optionalanalyticsonserver4
 SDcarddatabackup5



Notes:
1. Theanemometeristobemountedseparatetoapole.Couldbesamepole
assensor.

2. Batterybackuptimedependsonrunmodeandfrequencyoftransmission.

3. RequiresSIMcardandsuitabledataplanonAT&TorT‐mobile

4. Cloudbasedanalyticscanbedevelopedwithadditionalcontract

5. WhenremovingSDcardtoobtaindata,itisrecommendedtopoweroffthe
sensorboxpriortoreinsertingtheSDcardtoavoidpossibleerrors.Ifthe
systemstopsrespondingafterinsertinganSDcard,powerdownthesensor
andturnbackon.


Sensors
Overview Parameter
CODetectionRange 100ppb–25ppm
COAccuracy +/‐100ppbminor20%
NODetectionRange20ppb–25ppm
NOAccuracy+/‐20ppbminor20%
NO2DetectionRange20ppb–25ppm
NO2Accuracy+/‐20ppbminor20%
O3DetectionRange20ppb–25ppm
O3Accuracy+/‐40ppbminor50%
CO,NO,NO2,O3ResponseTimes 60‐90seconds1
CO,NO,NO2,O3DetectionMethod Electrochemical
CO2DetectionThreshold100‐2000ppm2
CO2Accuracy +/‐200ppmminor20%
CO2ResponseTime 15‐30seconds
CO2DetectionMethod NDIROptical
PM2.5DetectionThreshold 1‐1000g/m3
PM2.5Accuracy +/‐10g/m3minor50%
PM2.5ResponseTime 15‐30seconds
PM2.5DetectionMethod LaserScattering
PeriodicMaintenance Periodiccleaningofsensoropeningsof
dust,zeropointcalibration,andsingle
pointcalibration.Userreplacementof
sensorsiseasilyperformedasneeded.
AdditionalIncludedSensors Additionalsensorscanbeadded(external
ports)3


Notes:

1. Iftheunithasbeenoffforanextendedperiodoftime,itwilltake
approximately12‐24hoursfortheelectrochemicalsensorstostabilize
completely.

2. ThereareadditionalCO2sensorsavailablewithidenticalformfactorsif
higherconcentrations(e.g.10,000ppm)aredeterminedtobenecessary.

3. TheanemometerthatisdesignedtoworkwiththeRAMPistheDavis
VantagePro2Anemometer
(https://www.davisinstruments.com/product/anemometer‐for‐vantage‐
pro2‐vantage‐pro/)


SensorExteriorFeatures(FrontExterior)

FrontView
Antenna
L
e
f
t

S
i
de
Ri
g
htSide
BottomSide
To
p
Side

SensorExteriorFeaturesBackSideExterior)

BackView
Antenna
Mounting
Holes



SensorExteriorFeatures(LeftSideExterior)




LeftView
PowerSwitch
USB/Power
Port
Antenna

SensorExteriorFeatures(RightSideExterior)






Ri
g
htView Auxiliar
y
DevicePorts
Port1
(Anemometer)
Antenna
VentForPM2.5Sensor

SensorExteriorFeatures(BottomExterior)



Note:Donotobstructsensoropenings.Usermustinstallsensorenclosurewith
sensoropeningsfacingdownwardtoavoidwateranddebrisaccumulation.

ElectrochemicalSensors
CO2Sensor
PM2.
5

Se
n
so
r

SensorFeatures(FrontInterior) 


SD
Cell
(SIM)

QuickStartDeploymentGuide
ItisrecommendtouseacomputerandthesuppliedUSBcablewhensettingup
thesensorunittoverifytheoperationofthesensors,systemoutput,andcellular
dataconnectivity(ifapplicable).

1) Unpackthesensorunitandcheckforanyphysicaldamageorobstructions
atthesensoropenings.Openenclosurecoverandcheckforanylooseor
damagedcomponents.Makesureallwiresaresecurelyfastened.

2) HookupUSBcablesensorandinitializeterminalconnection.Poweronunit
andverifythattheSDcardwasdetectedandinitialized.

3) EnterintoUSBmodefromstartuporfromconfigurationmenu.Verifythe
sensoroutputsarereasonableortrendingtowardreasonablevalues
keepinginmindthestabilizationtimefortheelectrochemicalsensors.The
outputformatisshownbelow:

Heading

Description

Units/Format

DAT
E

LocalDateandTime MM/DD/YYHH:MM:SS(24H)


CO

CO PPB
NO/SO2

1

NO/SO2 PPB
NO2

NO2 PPB
O3

O3 PPB

 
CO2

CO2 PPM
T

Temperature °C
RH

RelativeHumidity %

 
PM1

PM1.0 g/m3
PM2.5

PM2.5 g/m3
PM10

PM10 g/m3

Port

1

2

ExternalModule Appearsonlyifattached
Port

2

2

ExternalModule Appearsonlyifattached
Port

3

2

ExternalModule Appearsonlyifattached
Port

4

2

ExternalModule Appearsonlyifattached

 
WD

WindDir DegreesfromNorth
WS

WindSpeed Mph


BATT

BatteryVoltage Volts(4.2‐3.4V)
CHRG

ChargingCurrent mA
RUN

RunCurrent mA


SD

SDStatus (1–OK
,
0–refertoSTA
T
)


RAW

Rawsensorsignals CO,NO/SO2
,
NO2
,
O3


STAT

SystemInformation *SeeBelow*

4) Theheading‘STAT’containsdiagnosticinformationdetailedbelow:
STAT=HEX1,HEX2,HEX3,(EXTENDEDINFO)
HEX1

Bit

Description

0

SDInitStatus(0
–
InitFailure,1
–
InitSuccess)
1

SDCardPresence(0
–
NotInstalled,1
–
Installed)
2

SDWriteStatus(0
–
NoError,1
–
WriteError)
3

TempFlag(1
–
Normal,0
–
LowTemp)
4

ChargeStatus(0
–
ChargeOn,1
–
ChargeOff)
5

CO2ConnectionStatus(0
–
NotInstalled,1
–
Installed)
6

PTR1ConnectionStatus(0
–
NotInstalled,1
–
Installed)
7

AlwaysZero

HEX2

Bit

Description

0

COReadError(0
–
OK,1
–
Error)
1

NO/SO2ReadError(0
–
OK,1
–
Error)
2

NO2ReadError(0
–
OK,1
–
Error)
3

O3ReadError(0
–
OK,1
–
Error)
4

Port1ConnectionStatus(0
–
NotInstalled,1
–
Installed)

5

Port2ConnectionStatus(0
–
NotInstalled,1
–
Installed)
6

Port3ConnectionStatus(0
–
NotInstalled,1
–
Installed)
7

Port4ConnectionStatus(0
–
NotInstalled,1
–
Installed)

H
E
X3

Bit

Description

0

Port1PowerStatus(0
–
PowerOff,1
–
PowerOn)
1

Port2PowerStatus(0
–
PowerOff,1
–
PowerOn)
2

Port3PowerStatus(0
–
PowerOff,1
–
PowerOn)
3

Port4PowerStatus(0
–
PowerOff,1
–
PowerOn)
4

Port1FaultStatus(0
–
NoFault,1
–
Fault)
5

Port2FaultStatus(0
–
NoFault,1
–
Fault)
6

Port3FaultStatus(0
–
NoFault,1
–
Fault)
7

Port4FaultStatus(0
–
NoFault,1
–
Fault)

5) Ifoperatingwithaweatherstation,orienttheweathersensorsuchthatitis
pointingNorth.Failuretodothiswillresultinarbitrarywinddirection.

6) AfterverifyingfunctionalityremovetheUSBcable.Ifplanningtorunin
USBmode,installapoweradapterorasolarpanelforlongterm
deploymentapplications.Otherwise,powercycletheRAMP,theninstalla
poweradapterorasolarpanelforlongtermdeploymentapplications.

Notes:

1. Position2isdesignatedforeitheranNOorSO2electrochemicalsensor

2. TheHeadingfortheportswillbespecifictothedevicethatisconnected
not‘Port#’





USBCommunication&ConfigurationMode(Sensor)  
TheRAMPsensorsallowforthereconfigurationofseveralparameterspertaining
totheoperationofsystem.Adjustmentoftheseparametersisonlyaccessiblefor
ashortperiodoftimeafterpoweringonthesensor(~10s).Theseparametersare
storedinnon‐volatilememoryandareretainedduringsubsequentpowercycling.
Documentationoftheseparametersislistedbelow.

RequiredComponents:
‐ Sensor
‐ USBdatacable
‐ Computerwithaserialportterminalsoftwareprogram(e.g.CoolTerm)

SensorQuickstartInstructions        

1) ConnecttheUSBcabletotheRAMPandcomputerandestablishthe
communicationlinkintheterminalsoftware.

2) Turnonpowerswitchandobserveinitializationprocess.Afterinitializingthe
microcontrollerandprintingRAMPinformation,thesystemwillsystemwill
prompttheuserto:

“EnterConfigurationMode?(YES)”
or
“EnterCalibration(USB)Mode?(CAL)”

3) Configurationmodeallowsaccesstoconfigurationsettingsandsystem
settings.ToenterconfigurationmodetypeYesatthepromptandhitenter.

Themenusarealltext‐basedandeasytofollow.Thefollowinglistcontainsall
theadjustablewithinthemenu:


Menu

Item

Description

Location

CONFIG

Common

settings

Root

Menu

DISPLAY

Prints

device

settings

Root

Menu

LOG

A
llows

user

to

save

message

Root

Menu

SYSTEM

System

settings

Root

Menu

A
PN

Cellular

Data

APN

Config

Menu

FILTER

ECHEM

Filter

Settings

Config

Menu

PM

PM

Device

Settings

Config

Menu

IDNUM

Device

ID

Numbe
r

Config

Menu

INTERVAL

Output

Interval

Config

Menu

RATIO

Points

Between

Cell

Post

Config

Menu

SERVER

Server

Address

for

Cell

Config

Menu

TIME

System

Time

Config

Menu

A
UTORANGE

A
utomatic

ADC

Selection

System

Menu

A
UTOTIME

A
utomatic

Cell

Time

Sync

System

Menu

DEBUG

Enable

verbose

USB

Output

System

Menu

DEFAULT

Reset

all

settings

System

Menu

ECHEM

Sensor

Parameters

System

Menu

ECHEMPARAM

Display

echem

parameters

System

Menu

OFFSET

Offset

and

slope

settings

System

Menu

OFFSETPARAM

Display

offset/slope

System

Menu

GSM

GSM

Test

and

Info

System

Menu

SIGNAL

Cell

signal

acquire

and

test

System

Menu

USB

Toggle

remote/local

mode

System

Menu

WIND

Wind

sensor

settings

System

Menu


Note:WiththeexceptionofDEBUGoption,allchangesmadewithinmenuare
storedinNVRAMandwillberetainedonpowercycling

4) Calibrationmodeallowstheusertoobserveacontinuoussensoroutputas
wellascalibratethezeroandslopeofthefollowingsensors:CO,NO,NO2,O3,

CO2,PM2.5reading.Calibrationmodeistemporaryandwillbelostupona
systempowercycle.ToentercalibrationmodetypeCalattheprompt.

‐ Tosetnewzerolevelexposethesensortozeroairandtypethefollowing:
CO:zero,NO:zero,NO2:zero,O3:zero,CO2:zero,orPM25:zero

‐ Tocalibratethesensortoaknownleveloftargetgasreplace‘zero’withthe
actualppbreadingforCO,theactualppmreadingforCO2,ortheg/m3
readingforPM2.5
(e.g.CO:10000wouldcalibrateto10000ppbCO,CO2:1500would
calibrate1500ppmCO2,orPM25:20wouldcalibrate20g/m3)

Note:Pleaseallow1‐2outputsforthesensorreadingtoupdate.



HardwareandSoftwareInstallationGuide   

1) DownloaddriversforFTDISerialAdapterandinstalldrivers

http://www.ftdichip.com/Drivers/VCP.htm

2) Openserialterminalprogramofyourchoice.CoolTermisrecommendedand
instructionsforusingCoolTermarefoundbelow.CoolTermisavailablefor
Windows,Mac,andLinux.CoolTermcanbedownloadedforfreefromhere:

http://freeware.the‐meiers.org/

1) Extract‘Software_CoolTerm’tothedirectoryofyourchoosing.Toavoid
certainpermissionsissuesdonotextractinto“ProgramFiles”.Itis
recommendedtoextracttothedesktopifpossible.

2) Openthe‘CoolTerm’application.Youmayreceiveanerrorindicatingthat
noserialportsarefounddependingonwhatishookeduptothecomputer.
Clickokaytocontinue.




3) Click‘Options’asshownbelow

a. ‘SerialPort’optionsshouldopenbydefault.Ifnot,selectSerialPort
optionsfromthelistofavailableoptionsasshownbelow.Alldefault
optionsshouldbecorrectbutpleaseverify.Clickon‘Port’dropdown
listandmakenoteofanyavailableports.PlugintheUSBcableand
waitforhardwareinstallationtofinish.Click“Re‐ScanSerialPorts”.
ThenewlyaddedportistheUSBcable.Selectthisport.







b. Select‘Terminal’optionsfromlistofavailableoptionsandselect
‘LineMode’asshownbelow.Linemodeaddsatextentrybaratthe
bottomofthescreenthatisusefulforsendingcommandstothe
connectedsensor.





