Omega CL526, Multifunction Indicator-Simulator manual General Performance

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1 GENERAL PERFORMANCE

A complete system for testing, measuring and calibrating built in a single, compact portable instrument. The portable calibrator CL526 is a multifunction instrument designed to meet, in a modern and practical way, the needs of instrumentation engineers, both in laboratory and field work.

Accurate, compact, rugged, easy to use; the ideal solution for measuring and simulating:

millivolts

volts

milliamperes (active and passive loop)

ohms

thermocouples

resistance thermometers

The CL526 has been developed using the most advanced microprocessor technology to provide high accuracy on extended ranges and a powerful operating flexibility.

The modular firmware includes the algorithms of thermocouples and resistance thermometers in accordance with IEC, DIN standards. IPTS68 and ITS90 linearization are memory stored and can be selected through the keyboard.

The simulation-measurement of resistance and temperature with resistance thermometer uses a special proprietary active circuit.

An unique internal automatic Rj compensation system allows the CL526 to provide accurate input and output readings over wide operating conditions, with a temperature range from -5°C to +50°C. Further, external compensation is available with temperature adjustable from -50°C to +100°C.

The selection of operating functions is made on a polycarbonate thermoformed membrane keyboard which assures up to one million operations per key.

Two thick film membrane “slidewires” are used to set the simulated signal value.

Measured and simulated values are indicated on a high quality LCD dot matrix display which provides good contrast even in poor light conditions.

A menu-driven procedure allows for the generation of up to 60 memory stored values, or, for continuous or step ramp values.

The instrument carries out mathematical functions for averaging unstable input signals and, in combination with scale factor, square root calculation.

The case, made in shock-resistant ABS, is ergonomically designed for easy practical use.

The instrument is powered by four Ni-MH rechargeable batteries; an external battery charger is supplied as a standard accessory.

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Contents CL526 OMEGAnetSM On-Line Service Internet e-mail Info@omega.com Introductory Note Table of Contents Digital Interface General Performance Specifications Battery voltage Power supplyBattery life Dimensions 120x60x230 mm Weights net 1 KgTable of ranges and accuracy 32 to +302F ± 0.02% of rdg +0.18FGeneral Features Case Physical Description Power supply Functional Description+ 5 V for logic and analog circuits 5 V for analog circuits Input circuit Digital display MicroprocessorFirmware Digital to analog converterBattery charger. Operation from line source Resistance and Rtd measurementsResistance and Rtd simulation Thermocouples input-output circuitUnpacking PRE-OPERATIONAL Check Out 1248.3C TcWiring practice Electrical ConnectionsThermocouple wires Examples of input /output wiring and connectionsLimit of Error of thermocouple wires ClassHow to maximize the battery life Power SupplyBattery Charger Battery Line OpOperating mode set up Power onBattery voltage indication Operation & Applications1032.2C TcK OUT mode selectionParameter or sensor selection Out 0.0C TcKTecnical unit International Temperature ScaleRj mode Decimal point positionData memory configuration Average readingsIN-OUT data memories Data memory manual recall Data memory automatic scanningManual step advance Automatic simulation cycleSimulation cycle selection End 100.0mV Time 0h 0m 50sStart 0.0mV 0mVRj compensation mode check Simulation cycleRJ 0.0C ext Mode Linear Mode SquareScale factor program ProgWord mbar Word psi Word hPaInstallation parameter procedure Firmware version code Serial numberExternal Rj compensation Digital Interface Digital interface data program modeDigital output wiring practice Baud RateTTL to RS 232 adapter Communication protocol from CL526 to a PCComputer CL526 Instruct DataPage Ramp Computer request for CL526 settings = OHMInstr ModeDis/Lin STO 2 #D 127 202 Display Chksum = DATA1 + DATA2 + Data 3 + Data 4 .AND.7F Example B PC instructions to CL526 Communication programsExample a data transfer from CL526 to PC Example a3ØØ While LOC 1 = Ø Wend Faulty operating conditions MaintenanceSafety recommendations Error ChecksumProtection fuses StorageIndex WARRANTY/DISCLAIMER Temperature