Primary standard gas flow calibration system

The Cal-Trak SL-500 primary standard gas flow calibrator is the first in the new Sierra Cal-Trak line of high-precision, cost-effective, primary standard gas flow calibrators

Litre Meter announces the introduction of the Cal-Trak SL-500 primary standard gas flow calibrator, the first in the new Sierra Cal-Trak line of high-precision, cost-effective, primary standard gas flow calibrators.

Sierra Instruments, of Monterey California, is one of world's most preferred gas flow meter manufacturers: they present the successor to the well-known Cal-Bench line of primary standard piston provers of the 1990s.

Fast, primary, affordable, mercury-free and easy-to-use, the Cal-Trak SL-500 offers a standardised accuracy of +/-0.4% in a portable, low-maintenance flow calibrator.

The dimensionally-based primary accuracy of the Cal-Trak is superior to pressure-based secondary methods and is backed by a rigorous uncertainty analysis.

Field-rugged, it is used in the manufacture, inspection, validation and recalibration of mass flow controllers, flow meters and many other varieties of flow equipment in the 5 sccm to 50 slpm range.

The broad turndown ratio of the SL-500 allows three interchangeable flow cells to cover this range, minimizing initial investment and maintenance costs.

Alternatively, the modular nature of the Cal-Trak SL-500 allows a user to begin with one flow cell and then add the other cells as resources allow.

The Sierra Cal-Trak family provides primary NIST traceability, and is manufactured under strict ISO 17025 certification, and is CE approved.

The Cal-Trak SL-500 offers data logging, digital communications, interval operation and many other productivity-enhancing features.

Fast enough to use as a flow meter, the Cal-Trak SL-500 is automatic and requires minimal training for flow meter verification and calibration.

It is well-suited for applications in the metrology, semiconductor, analytical, medical and pharmaceutical fields, among others.

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