CHINT  AO signal isolator and barrier 2 channels 2 in and 2 out¹

Product Description CHINT AO,Isolated Barrier(2 channels) 2in and 2outAnalogue Output Isolated Barrier, It allows bi-directional transmission of HART communication signals, The product requires independent power supply, power supply, input and output three isolation.Production parameters MODEL NOCB4038-EXNumber of channel2 inputs/2 outputsSupply voltage(Ue)20~35V DCInput signal0~20mA;4~20mA;HARTOutput signal0~20mA;4~20mA;HART;0~5V;1~5VEx-marking[Ex ia Ga]IICField apparatus2-wire valve positioner,electric converterTechnical data 1. GeneralNumber of channels2inputs/2outputs Dielectric strengthBetween non-intrinsically safe part and intrinsically safe part≥2500VAC,Between power supply part and non-intrinsically safe part≥500VACOutput accuracy(20°C)0.1%F.S.Temperature drift0.005%F.S./oCResponse timeReach 90% of final value in 2msInsulation resistanceNon-intrinsically safe part and intrinsically safe part≥100MΩ,power supply part and non-intrinsically safe part≥100MΩElectromagnetic compatibilityAccording to IEC 61326-1(GB/T 18268)EX marking[Ex ia Ga]IIC [Ex iaD]WeightApprox 150gField apparatus2-wire Valve Positioner,Electric ConverterSuitable locationzone 0;zone 1;zone 2;IIA;IIB;IIC;T4~T62. Input DataInput signal0~20mA;4~20mA;HARTVoltage drop≤2V 3. Output Data Output signal0~20mA;4~20mA;HART;0~5V;1~5VCurrent output load resistanceRL≤800Ω;RL≥250Ω(HART)Voltage output load resistanceRL≥330kΩ4. Power SupplySupply voltage(Ue)20~35V DCPower protectionReverse protection of power supplyCurrent consumption≤65mA (at 24Vdc supply,20mA output)Power supply modeIndependent power supplyPower connecting modeTerminal5. Housing MaterialPADegree of protectionIP20Flammability ratingUL94/V0Colourgrey6. Product approvals ApprovalsNEPSI7. Standard/SpecificationNEPSI[Ex ia Ga] IIC Comply with standard: GB 3836.1,GB 3836.4,GB 3836.20 [Ex iaD] Comply with standard: GB 12476.1,GB 12476.48. Safe data Max. r.m.s. a.c. or d.c. voltage Um250VMax.output voltage Uo28V(7,8,9)Max.output current Io93mA(7,8,9)Max.output power Po651mW(7,8,9)IIC Max. external inductance Lo4.2mH(7,8,9)IIC Max. external capacitance Co0.083μF(7,8,9)IIB Max. external inductance Lo12.6mH(7,8,9)IIB Max. external capacitance Co0.65μF (7,8,9)IIA Max. external inductance Lo33.6mH(7,8,9)IIA Max. external capacitance Co2.15μF(7,8,9)9. EMC DATA Electrical fast transient/burst immunityAccording to:IEC 61326-1;Class ASurge immunityAccording to:IEC 61326-1;Class BRadiated,radio-frequency,electromagnetic field immunityAccording to:IEC 61326-1Electrostatic discharge immunityAccording to:IEC 61326-1;Class BImmunity to conducted disturbances, induced by radio-frequency fieldsAccording to:IEC 61326-110. Data communicationHARTYes11. Operating ConditionsAmbient temperature-20oC~+60oCStorage temperature-40oC~+80oCRelative humidity10%~90%Environmental requirementsThe air should not contain any medium corrupting the coat of chrome,nickel and silver.Moreover,violent quiver and impact or any cause of electromagnetic induction (such as big current or spark,etc.)must be avoided when using12. Connection DataConductor cross section solid range0.5~2.5mm2Conductor cross section flexible range0.5~2.5mm2Conductor cross section AWG min.12Conductor cross section AWG max.24Stripping length8mmScrew threadM3Connection methodScrew connectionTightening torque min.0.5 NmTightening torque max.0.6 Nm13. InstallationMounting typeDIN35mm14. Notes Utilization restriction1. It is not allowed to use HHC (HART hand-held communicator) in hazardous area and safe area at the same time.2. HHC (HART hand-held communicator) used in hazardous area must have an EX certification.

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