DSHD-421 Insulating Oils Volumetric Resistivity Tester
A:ProductIntroduction:
DSHD-421InsulatingOilsVolumetricResistivityTesterisanewinstrumentspeciallydevelopedforresistivitydeterminationusingtheactivebridgeprincipleaspertheIndustryStandardofPeople’sRepublicofChinaDL/T421-91“TestMethodforVolumeResistivityofInsulatingOils”.Equippedwithparametersmeasurementsystemandoilcupheatingcontrolsystem
DSHD-421InsulatingOilsVolumetricResistivityTestercantime,readreadingsandsavetestdataautomatically.Soastoachievetheadvantagesofsimplestructure,excellentlinearity,highsensitivity,stabilityandsafety.Comparedwiththeinstrumentusingvoltageorcurrentmethod,thebetteritis.
Exceptingtodeterminethevolumeresistivityofinsulatingoils,DSHD-421InsulatingOilsVolumetricResistivityTestercanalsousedtodetermineresistivityoftransformeroilandlubricatingoils.
Furthermore,DSHD-421InsulatingOilsVolumetricResistivityTesteristhebestchoicetodeterminevolumeresistivityoflubricatingoilsinthepowerindustry,petroleumindustry,scientificresearchinstitutes,andrelativefactoriesandcompanies.
B:Maintechnicalspecificationsandparameters: (I)Operationcondition 1.Ambienttemperature:0℃～40℃ 2.Relativehumidity:≤85% 3.Powersupply:AC220V±10%,50Hz±1Hz (II)Measurementparameters 1.Measurementvoltage:DC500V 2.Measurementrange:108～19.99×1013Ω·cm 3.Repeatability: (1)＞1012Ω·cm:≯25% (2)＜1012Ω·cm:≯15% 4.Heatingpowerfortemperaturecontrol:300W 5.Temperaturecontrollingrange:30℃～100℃ 6.Temperaturecontrollingaccuracy:±0.5℃ 7.Measurementerror:≤±10% 8.Measurementelectrodecup:3pieces
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