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

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.

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