AD2061

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Technical content

W. ANALOG W DEVICES MicroprocessorBasedAutoranging RTD;ThermistorMeter

FEATURES

Temperature Ranges: -328°F to + 1562°F -200°C to +850°C Autoranging: 0.1°from -199.9° to + 199.9°;1°2:200° Sensor Selection (AD2060): RTD 1000 Platinum 0:=0.00385, 0.00390, 0.00392 or 22520 Thermistor Universal Meter (AD2061) Sensor User Programmable Switch Selectable Sensor Configuration: 2,3 or 4-wire 7-BitASCII Character SerialData Output Automatic Self-Calibrationfor Gain, Offset,Excitation and Sensor Linearization Optional Linearized Analog Voltage Output: 1mV/degree Optional Isolated20mA ASCII Loop/TTL SerialOutputs

APPLICATIONS

Temperature Monitoring in Laboratory, Manufacturing and Quality Control Environments Process Control Temperature Measurements Remote Data Logging GENERAL DESCRIPTION The AD2060/AD2061 arehigh performance singlechannel 3Vz digitRTD/Thermistor meters thatcan measure temperature accuratelybetween - 328°Fand + l562°F(- 200°Cand + 850°C). Both meters offerautorangingfrom O.loC/F to 1°C/F.The AD2060 issuppliedfactoryprogrammed forone of foursensor types:1000 Platinum RTDs: a =0.00385, 0.00390,0.00392 or a 22520 Thermistor.The AD2061 isa universalmeter inwhich the user selectsone of the foursensortypesviaswitchprogram- ming. The microprocessorbased AD2060/AD2061 provides gain,offsetand excitationerrorcorrection,linearizationand °C/ of scalinginfirmware.The AD2060/AD2061 displaytemperature informationon large0.56"(l4.3mm) high LEDs. Digitalinfor- mation isprovidedin 7-bitstandardASCII characterserial 'WIRE RTO OVER- VOLTAGE PROTECTION .OPENSENSOR DETECTION INTEGRATOR CONTROL SElF-CALIBRATION CHANNEl SElECT format with baud rateselectionforeasyinterfaceto printers, terminalsand otherperipherals.For remote dataacquisition applications,an optionalisolated2-wire20mA ASCII serial loop/TTL compatibleinterfaceisavailable.For drivingrecorders or otheranaloginstruments,an optionallinearizedanalogvoltage output of lmV/degree isavailable.Selectionof DC or OF scaling isaccessedby removing the frontpanellensand settingthe selectorswitchtoitsproper position. The AD2060/AD2061 can be ordered in one of the following power versions:l20V ac,240V ac or +7.5V de to +28.0V de. Input voltageprotectionof l80V peak (RTD shortto ac line), common-mode voltageto l400V peak (acversion)with overrange and open sensordetectionisprovided.These meters arerated foroperationover the 0 to +40°C temperaturerange.Each AD2060/AD2061 isburned-infor 168 hours @ 50°C with on/off power cyclesforincreasedreliability.The AD2060/AD2061 are suppliedin rugged molded plasticcasesthatmeet UL94V-0 and DIN/NEMA standarddimensions. DIGIT ADDRESS }IOPTIONALI Figure1.AD2060&AD2061 FunctionalBlock Diagram Information furnished by Analog Devices is believedto be accurate and reliable.However, no responsibilityisassumed by Analog Devices for itsuse;nor for any infringementsof patentsor otherrightsof third partieswhich may resultfrom itsuse.No licenseisgrantedby implica- tion or otherwiseunder any patentor patentrightsof Analog Devices. Route 1 IndustrialPark; P.O. Box 280; Norwood, Mass. 02062 Tel:617/329-4700 TWX: 710/394-6577 West Coast Mid-West Texas 7141641-9391 3121653-5000 214/231-5094 - - --- OBSOLETE

SPEC IFI CAli ONS (typical@+ 25"&andratedsupplyvoltagesunlessotbenvisespecified) RTDINPUTS . RTDTypes: 1000 Platinum u = 0.oo385 (PerDIN 43760) u = 0.oo390 u = 0.oo392 . Configuration:2, 3 or 4 Wire . ExcitarionCurrent: 0.25mA nominal . External Lead Resistance Effect:Automatically Compensated for 3 & 4 wire configurations . LeadResistance:500/Leadmax;RTD + Lead Resistance must be less than 4000 . 3 Wire Error: 2.8'C/O of impedance imbalance . Open Sensor: DISPLAY + EEE . RTD Short to ac Line: Internalprotectionprovided to 180V peak (130V rIDs) . Maximum Common-Mode Voltage: 1400V peak (ac or de) betWeen input and power lineground (ac version) . Common-Mode Rejection Ratio: IOOdB ac power to RTD input . Nonnal Mode Rejection:6OdB @ SO/60Hz THERMISTOR INPUTS . Thennistor Type: Series400 R = 22520 . Configuration:2 Wire . Open Sensor: DISPLAY -EEE ACCURACY . Temperature Resolution: Autoranging (0.1'from -199.9' to + 199.9',1',",2oo') . All Ranges Guaranteed Monotonic . Range Temperature Coefficient:20ppml'C typ, 3OppmrC max . ReadoutAccuracy'@ + 25T Sensor Range ~ 2oo'Cto+ 850'C -328'Fto+1562'F - 2oo'C to + 640'C - 328'Fto + 1184'F -2oo'Cto +640'C - 328'F to + 1184'F -30'Cto + 100'C -22'Fto +212'F Accuracy looORTDu=0.oo385 0:0.3'Co: 1I2LSD 0:0.6'F 0:1/2LSD 0:0.3'Co:1I2LSD 0:0.6'F:U/2LSD 0:0.3'Co: 1I2LSD 0:0.6'Fo:1I2LSD 0:O.4'C 0:1I2LSD 0:0.8'Fo: 1I2LSD looORTDu = 0.oo392 looORTDu=0.oo390 Thermistor R = 22520 'Readout Accuracy: IncludesGain and OffsetErrors.Recommended RecalibrationlntervaI15-MONTHS. DIGITAL OUTPUTS . Character SerialASCII Data: Eleven transmitted characters,(each 7 bitsplus strobe) Drive Capability:2TTL loads,CMOSITfL compatible Strobe:Negative transitiondetermines when characterserialdata isvalid.CMOS/TTL compatible. Character Rate: Selectableon PI (Pin 32) Grounded: 25 characters/sec.(SLOW) Open: loo characters/sec.(FAST) . IsolatedSerialOutput (Optional) Data: Asynchronous ASCII 20mA current loop (Opticallyisolatedto 0:600V peak) Baud Rate: Selectableon PI (Pin 32) Grounded: 300 baud (SLOW) Open: 12oo baud (FAST) Distance: 10,Ooo ft.max . Nonisolated SerialOutput (Optional) Data: SerialASCII Drive Capability:2TTL Loads, CMOSITfL compatible Baud Rate: (same as IsolatedSerialOutput) . Overrange: 0:EEE.E . Minimum Time BetWeen New Data Update: 15Oms DIGITAL INPUTS . REQ: Low-Level Triggered: Must go low at any time other than during data transmission to be recognized. REQ linetaken low during data transmissionwill not be acknowledged and the ASCII digitaloutput transmissionwillnot occur. Display readings are not effectedby REQ. . SERIAL INPUT (Optional):Edge Triggered, Current On to Current Off: Must be triggeredat any time other than during data transmission to be recognized. Serial Input triggeredduring data transmissionwillnot be acknowledged and the 20mA isolatedl1TL compatible serialoutput transmission willnot occur. Display readings are not effectedby SerialInput. ANALOG OUTPUT (OPTIONAL) . Voltage:ImV/degree,linearized . Current:0:2mA max drive . CMV: 1400V peak (acordc)betWeenAnalogOutput Ground & ac Power Line Ground . Overrange:+2.048V, -O.512V . Accuracy:0:2m V from DisplayReading Specificationssubject tochange without notice. ANALOG TO DIGITAL CONVERSION . Technique: Offset Dual Slope with Gain and Offset Error Correction . Rate: 2.5 Conversions/Second Typical . Input IntegrationPeriod: lOOms for SO/60Hz Noise Rejection POWER REQUIREMENTS (Choice of Three Supply Ranges) . ac:9OV ac to 132V ac @ 25mA (47Hz to 500Hz) 198V ac to 264V ac @ l2.5mA (47Hz to 500Hz) . de: + 7.5V to + 28V dc @ 2OOmA (Protected Against Supply Reversals) DISPLAY . Type: Seven Segment Orange LED 0.56" (14.3mm) high . PolarityIndication:"+" or "-" displayed . Overrange Indication:0:EEE . Display Test: At Power Turn-On, 3 Second Display of" + 188.8." Tests all Segments of Display '<t00 1.0 I ('oJ M U ENVIRONMENTAL . Rated TemperatUre Range: 0 to + 40'C . OperatingTemperatureRange:- IO'C to + 50'C . StorageTemperatUreRange: - 4O'C to + 85'C . RelativeHumidity: Meets MIL-STD-202E, Method 103B (0 to 90%, Noncondensing) DIMENSIONS plasticcase. Meets UL94V-O and DININEMA Standard dimensions . Weight: 15.2 oz (431 grams) max, ac powered 12.0 oz (341 grams) max, dc powered. RELIABILITY . MTBF: >55,000 hours calculated . Burn In: 168 Hours at + 50'C with Power ON/OFF Cycles. . Calibration:NBS Traceable . Recalibration:Recommended IS-Month Intervals . Warranty: 12 months CONNECTOR One 44 pin 0.1" (2.54mm) spacing card edge connector Viking 3VH2211 JN5 or equivalent Optional: Order AC2630 O25DIA ASCII DIGITAL DUTPUT BOARD 43@ Figure2. Rear Panel View AD2061 LLL AD2060 L/~L/- SENSOR TYPE' J(385) looO Platinum RTDu = 0.oo385 (390) looO Platinum RTD u = 0.oo390 ENTER (392) looOPlatinumRTDu ~0.oo392 (2252)ThennistorR ~ 22520 POWER OPTION' (I)120Vac (2)240V ac ENTER (3) +7.5Vdcto +28Vdc ANALOG OUTPUT OPTION (A) Contains Analog Output ENTER (Blank) Does Not Contain Analog Output SERIAL OUTPUT OPTION (S)Contains SerialOutput ENTER (Blank)Does Not ContainSerialOutput ORDERING GUIDE uj:J f-Z a:a.. PRICING AD2O60 AD2O61 AnalogOutput IsolatedSerialOutput DC Version AC2630 (1-4) $295.00 $355.00 $ 55.00 $ 76.00 $ 27.oo $ 9.50 (loos) $206.50 $248.50 $ 38.50 $ 53.25 $ 19.00 $ 6.50 *Only one option can be ordered. The sensor type does not need tobe specified when ordering the AD2061 since itisuser programmable. OBSOLETE