Omega CL526 Maintenance, Safety recommendations, Faulty operating conditions, Error Checksum

Page 46

11 MAINTENANCE

The CL526 portable calibrator has been factory tested and calibrated before shipment.

The calibration should be verified and re-adjusted if the instrument is showing an error exceeding the declared specifications or when a critical active or passive component is replaced (either at component level or at board level). OMEGA will supply, on request, a technical reference manual, with all instructions and recommendations for service and calibration. OMEGA engineers will give prompt support for any requests of assistance.

11.1Safety recommendations

Primary elements (i.e. thermocouples, resistance thermometers, etc.) are normally linked to electrical potentials equal or near to the ground potential. However, in some applications, there may be present a common mode voltage to earth. Check for voltage between input terminals and ground, as this voltage can be transmitted to other devices connected to the calibrator.

11.2Faulty operating conditions

During start up, measuring and simulation modes, faulty conditions of the instrument will be announced, with coded messages as follows:

Error Checksum 1

Error Checksum 2

Error Checksum 3

Error Checksum 4

Error Checksum 5

Error Checksum 6

Error Checksum 7

!!! ERROR 9 !!!

Indicates a possible loss of data on “AUTORAMP” program or on the manual memories.

Indicates a possible loss of data on “PROGRAM X”.

Indicates a possible loss of data on “AUTORAMP”, “PROGRAM X” and/or on the manual memories.

Indicates a possible loss of calibration data.

Indicates a possible loss of calibration data, and/or “AUTORAMP” data and/or on the manual memories

Indicates a possible loss of calibration data, and/or “PROGRAM X”data.

Indicates a possible loss of calibration data, and/or “AUTORAMP” data, “Xscaling” and from the three manual memories

Indicates a data writing on the EEPROM memory not verified.

When the above error codes are indicated repeat the set-up of the application parameters and/or autoramp data and/or In-Out memories.

- UNDER -

+ OVER +

ERROR 2

Indicates “underflow” conditions

Indicates “overflow” conditions

Indicates an environment temperature (in correspondence with <IN/OUT> terminals) exceeding the stated limits

Indicates that the load is exceeding the stated limits.

When in mA “OUT” function, the external load must not exceed 1000 Ω.

46

Page 45 Page 47
Image 46
Page 45 Page 47
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 Functional Description Power supply+ 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 positionAverage readings Data memory configurationIN-OUT data memories Data memory manual recall Data memory automatic scanningAutomatic simulation cycle Manual step advanceSimulation 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 hPaFirmware version code Serial number Installation parameter procedureExternal Rj compensation Digital Interface Digital interface data program modeDigital output wiring practice Baud RateCommunication protocol from CL526 to a PC TTL to RS 232 adapterComputer 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
Top Page Image Contents