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.
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 |