Handheld Conductivity Meters

湖北天马养蜂场2011-09-04 22:50:06蜂产品检测/加工工具2866

Theconductivityisacumulativeparameterfortheionicconcentrationofasolution.Themoresalt,acidoralkaliinasolution,thegreateritsconductivity.TheunitofconductivityisS/cm.Thescaleforaqueoussolutionsbeginswithpurewaterataconductivityof0.05μS/cm(25°C).Naturallyoccurringwaterssuchasdrinkingwaterorsurfacewaterhaveaconductivityintherange100-1000μS/cm.Theupperendofthescaleisreachedbysomebasessuchaspotassiumhydroxidesolutionswithaconductivityofjustover1000mS/cm.

Conductivityismeasuredbymakingameasurementoftheelectricalresistance.Thesimplestkindofmeasuringcellusedconsistsoftwosimilarelectrodes.Analternatingvoltageappliedtooneoftheelectrodescausestheionsinthesolutiontomigratetowardstheelectrodes.Themoreionsinthesolution,thegreaterthecurrentwhichflowsbetweentheelectrodes.TheinstrumentmeasuresthecurrentandusesOhm'slawtocalculatefirsttheconductanceofthesolutionandthen-bytakenthecelldataintoaccount.

ThermalConductivityofhoney:Thespecificheatofhoneyisinthe0.54-0.60cal/g/°Crangeforliquidhoney,andisequalto0.73cal/g/°Cforfinelygranulatedhoney.Thethermalconductivityofhoneyincreaseswithtemperatureandtotalsolids,rangingfrom118x10-5to143x10-5cal/cmsec°C.

蜂蜜检测设备-仪器

contents:Data-LineConductivitytemperaturemeasureinginstrument/standardconductivityelectrodewithwaterproofplug/setcehcsolutions2x100ml1413μSand12,88mSat25oCincl.electrodestand,allwellarrangedinProfiBox.

additionallyavailable:

PT100sensorwithhandle

PTCTemperaturesensor

Measuringrange

Resolution

Accuracy

ConductivityμS

0,10to39,99μS

0,5%X0,05μS

ConductivitymS

20,0to399,9μS

0,5%±0,1μS

200to3999μS

0,5%±1μS

2,00to39,99mS

0,5%±0,01mS

20,0to399,9mS

2%±0,1mSupto2OmS

 

and6%from100to399mS

TDS

Oto3999ppm

2%±1ppm

Salinity

0,0to70,0g/kg

0,5%±0,1atrange2,0to42,0g/kg

 

atrangeOto30°C

 

Temperature(NTC30)

-5,0to105,0°C

0,2°C

PTC

-50,0to150,0°C

0,2°C±0,2

Pt100

-100,0to399,9°C

0,2°C+0,4

Datamemory

250datasetswithidentityNo./measuringvalue/time/date

Automaticmeasurements

atintervals1/213/5/10/20/30minutesand1/2/3/4hours

Autooff

adjustablefrom1to59min(afterlastoperation)

Clock

withcalendar,summer-andwintertimewillbeadjustedautomatically

Powersupply

4x1,5VAAAlkalineBatteries

Operatingtime

approx.4000h

Interface

RS232C/Parameter2400Baud/B/P1

Protocol

ASCII

Dimension

170x79x39mm(LxWxN)

Weight

350g(weightonlyofinstrument)湖北天马养蜂场,加我们的微信一起学养蜂。

Case

protectiontypeIP66andIP67