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Chapter 1: Introduction
Congratulations! You’ve chosen the CalTrak SL 800, featuring proven CalTrak
®
technology from Sierra. The CalTrak SL 800 has five
interchangeable cells that offer ±0.25% to ± 0.15% of reading standardized accuracy within a portable primary standard that’s ideal for both
volumetric and standardized flow applications where a high degree of measurement accuracy is required. Before you get started, we recommend
taking a few moments to review this manual and familiarize yourself with the CalTrak SL 800. If at any time you have questions regarding its
operation, please contact Sierra through our web site (www.
), or call us at SL 800-866-0200 to speak with one of our
knowledgeable customer support representatives.
Operation
The CalTrak SL 800 is a positive displacement primary piston prover for gas flow measurements in either pressure or vacuum applications.
Using Proven CalTrak Technology, it combines the accuracy of a primary standard with unequaled speed and convenience. Volumetric or
standardized flow readings are obtained with the push of a button. The CalTrak SL 800 can be set to take flow readings manually, one reading
at a time, or automatically in the continuous auto-read mode. The CalTrak SL 800 can be programmed for up to 100 readings in an averaging
sequence.
The versatile CalTrak SL 800 can be used to measure the gas flow rates at atmospheric pressure ± 7mmHg. Its Proven CalTrak Technology
features a near-frictionless piston and flow cell design that provides highly-accurate, liquid-free flow measurements of unequaled speed and
convenience. The CalTrak SL 800 consists of two primary components: The base and the flow cell. There are five interchangeable flow cell
models, each with a designated flow range. The flow cell plugs into the base unit in order to create a complete, functional CalTrak SL 800
system. The base component houses the main computer and timing circuitry. The flow cell is easily fitted into the base unit’s interface
connector and two guide pins.
The flow cell performs the actual flow measurements. For this purpose, it houses a “piston and glass assembly” comprised of a borosilicate
glass tube housing a precision-machined graphite piston. The flow cell also contains an integrated temperature sensor and barometric
pressure transducer in the gas flow stream for instant conversion of the volumetric readings into standardized flow.
CalTrak Pro software captures flow data from your CalTrak instrument to a PC.
The CalTrak Pro software allows you to:
View and plot the flow data in real-time.
Export your data to a Windows environment.
Enter flow data from a flow meter and compare the flow measurements from your CalTrak
®
precision calibrator.
Upload the latest version of the firmware to your CalTrak
®
.
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