AD2050_15 AD | Alldatasheet
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Technical content
,.ANALOG W DEVICES
FEATURES
Automatic Self-Calibrationfor Gain, Offset,Cold Junction Compensation and Thermocouple Linearization J, K, T, E, R, S Thermocouple Selections (AD2050) Universal Meter (AD2051), User Programmable Character SerialASCII DigitalOutput Optional Linearized Analog Output: 1mV/degree Optional Isolated20mA LooplTTL SerialOutputs Meets DIN/NEMA Dimension Specifications Temperature Ranges: - 265°F to + 1999°F -165°C to + 1760°C Power Options: 120V ac, 240V ac, + 7.5V dc to + 28V dc
APPLICATIONS
Temperature Monitoring in Laboratory, Manufacturing, and Quality Control Environments Process Control Temperature Measurements Remote Data Logging GENERAL DESCRIPTION The AD2050 and AD205 1 arehigh performance,singlechannel, 31/2digitthermocouple meters thatcan measure temperatures accuratelybetween -265°F to + 1999°F or from -165°C to + l760°c.The AD2050 isfactoryprogrammed forany of the followingsixthermocouple types:],K, T, E, Rand S.The AD205 1 isa universalmeter thatallowstheuser to selectone of the sixthermocouple typesviaswitchprogramming. The micro- processor-basedAD2050 and AD2051 providegainand offset errorcorrections,cold junctioncompensation,thermocouple linearization,and °C/oFscalingautomaticallyperformed in firmware. The AD2050 and AD205 1 displaytemperatureinformationon large0.56"(l4.3mm) high LEDs. Digitalinformationisprovided in standardASCII characterserialformat with rateselectionfor easy interfaceto printers,terminals,and otherperipherals.For remote dataacquisitionapplications,an optionalisolated20mA "HOT" JUNCTION INTEGRATOR COMPARATOR r ' I I I r I "COLD" JUNCTION INTEGRATOR CONTROL SELF-CALIBRATION CHANNEL SELECT +5V -3V MicroprocessorBased ThermocoupleMeters serialloop/TTLcompatibleinterfaceisavailable.Also an optional analogoutput linearizedto 1m V/degreeisprovidedfordriving recordersand otheranaloginstruments.Selectionof °C or OF scalingisaccessedby removing the frontpanellensand setting the selectorswitchto itsproper position. The.AD2050 and AD2051 can alsobe ordered with any of the followingpower versions:120V ac,240V ac,or + 7.5V dc to + 28V dc. Input overvoltageprotectionfor300V peak (ther- mocouple to ac lineshorts)and common mode voltagesas high as 1400V peak (acversion)with overrangeand open thermocouple detectionare provided.These meters areratedforoperation over the + lOoC to + 40°C temperaturerange.Each meter is burned in for 168 hours @ 50°C with on/offpower cyclesfor increasedreliability.The AD2050 and AD2051 aresuppliedin rugged,molded, plasticcasesthatmeet UL94V-0 and DIN/NEMA standarddimensions. M I C R P R C E S S R DIGIT ADDRESS DIGIT INFORMATION DIGIT ASCII INFO (OPTIONAL) ANALOG OUTPUT TTl SERIAL OUTPUT SERIAL INPUT ISOLATED 20mA lOOP }~,~, Figure 1. AD2050 & AD2051 FunctionalBlock Diagram tion or otherwise under any patent or patent rightsof Analog Devices.
dataisvalid,CMOSITTL compatible. playreadingsarenoteffectedby REQ. 12.0 oz (341 grams) max, dc powered. Figure 2. Rear Panel View when ordering the AD205! since itis user programmable. Specificatinns subjeCt to change without notice.