数字衡量指标

digital weighing indicator Thecontrolleristoresistancestraingaugesensortosignalsource,using24-bitΣ-Δ-typeA/Dconversiontechnologyand8-bitsingle-chipmicrocomputer,LSI,composedofhigh-precision,highreliabilityelectronicweighingdisplaycontrolinstrument. Belowthiscontrollerhasthemajorfunction: 1.parametersettingandcalibrationandperformedatthefrontpanel. 2.hasdemonstrationweightresetfunction. 3.Improperoperationandindicationfault. 4.4 20mAanalogoutput,mayestablish4mAandwhenthe20mAelectriccurrentoutputcorrespondsweightvalue. 5.Cansettheoutputtobecontrolledbylow,middleandhighthreegroup,andmayestablishtherespectiveControlvaluesandbuffervalueswillfully. Majortechniqueparameter. 1.1 A/Dsamplingrate 7.5times/s 240times/s 1.2 theresolution 24 1.3 None-linearly ≤0.005%F.S 1.4 zerodrift ≤0.2μV/°C 1.5 temperaturecoefficientmeasuringrange ≤10ppm/°C 1.6 fullscalenetinputsignalscope 2 20mV 1.7 beginningheavysignalscope -1 +9mV 1.8 simulatorinputsensitivity: 2.80.5uV/d(smallest)1.5uV/d(recommendation) 1.9 Zeroresetscope 100%FS 2.0 demonstrate 6redLEDnixietubes(characterhigh14mm) 2.1 workingconditionstemperature -5°C 45°C 2.1 relativehumidity 90%(nocondensation) 2.2 powersupply +18to+24VDC,0.5A 2.1 sensorsupplyvoltage: Drivesuptofournolessthan350Ωloadcell.