ABB AWT420 Operating Instruction

Also see for AWT420: Commissioning instructions Manual Manual

Contents

ABB AWT420 Operating Instruction Manual pdf 93 page image

AW T4 2 0 | U N I V E R S A L 4 - W I R E , D U A L- I N P U T T R A N S M I T T E R | O I/A W T4 2 0 - E N R E V. B93Connectivity/Communications (optional)EthernetHTTP, HTTPS, FTP, Secure FTPPROFIBUS DPDPV0, DPV1MODBUSRTU RS485HART• Fieldcomm certified version – HART 7• Configured range– 4 to 20 mA, user-programmable acrossmeasurement range• Dynamic range– 3.8 to 20.5 mA with 3.6 mA low alarm level,21 mA high alarm level• Accuracy– ±0.25 % of reading• Maximum load resistance– 500 Ω at 20 mA• Configuration– Can be assigned to either measured variable• Isolation– 500 V DC from any other circuitryData loggingStorage• Measurement value storage(programmable sample rate)• Audit log*, Alarm log*, Calibration log, Diagnostics logStorage mediaSD card, up to 32 GB capacityChart viewOn local displayHistorical reviewOf dataData transferSD card interface – Windows-compatible FAT file system,data and log files in Excel and DataManager Pro compatibleformatsEnvironmental dataAmbient operating temperature:–10 to 55 °C (14 to 131 °F)Ambient operating humidity:Up to 95 % RH non-condensingStorage temperature:–20 to 70 °C (–4 to 158 °F)Altitude:2000 m (6562 ft) max. above sea level* Audit log and Alarm log data are stored in the same log file.2-electrode conductivityConductivity inputMeasurement range and resolutionCellconstantConductivityrangeDisplayresolutionAccuracyrepeatability0.01 0 to 200 μS/cm 0.001 μS/cm±1.0 % ofmeasurementrange per decade0.05 0 to 1000 μS/cm 0.001 μS/cm0.1 0 to 2000 μS/cm 0.01 μS/cm1 0 to 20000 μS/cm 0.1 μS/cmDynamic response<3 s for 90 % step change when damping is OffDampingConfigurable: Off, Low, Medium and HighTemperature inputTemperature element types• Automatic temperature sensor recognition for Pt100,Pt1000 and 3k Balco RTDs in either 2-lead or 3-leadconfigurations• Temperature element can be used for automatictemperature compensation of the conductivity solutionMeasurement range and resolutionSensorgroupTemperaturerangeDisplayresolutionAccuracyrepeatabilityPt100Pt10003K Balco–20 to 200 °C(–4 to 392 °F)0.1 °C(0.1 °F)0.1 °C(0.18 °F)None User-programmable–20 to 300 °C(–4 to 572 °F)N/ATemperature compensation modesLinear, UPW, NaCl, HCl and NH3Reference temperature25 °C (77 °F)Configured output rangeCell constant Min span Max span0.01 1 μS/cm 200 μS/cm0.05 5 μS/cm 1000 μS/cm0.1 10 μS/cm 2000 μS/cm1 100 μS/cm 20000 μS/cm