Pressure calibrator CalTrak®500

temperaturegas flowportable

Calibrate your flow instruments, save money and time Quick, easy to use, automatic data capture Portable and battery operated Results directly traceable to NIST Sierra's CalTrak® 500 is an accurate primary standard gas flow calibrator for all inert gases. The 500 is used for calibration and verification of: Mass flow meters Controllers Variable area flow meters Precision in-situ calibration of industrial flow meters and controllers The 500 is ideal for owners and users of many instruments (more than 25) that require calibration/verification one or more times a year and want to avoid the cost and downtime delay of sending instruments out to get calibrated. For accuracy surpassing the 500, review the industry-best accuracy of the CalTrak 800. Operating Principal: All of our CalTrak models contain a nearly frictionless graphite piston that moves freely inside a borosilicate glass tube. When the parallel bypass valve is closed, the gas flow is directed into the tube to push the piston up. Two photo-optic sensors detect the piston as it travels past. The distance the piston travels between the two sensors is precisely defined and represents a known volume. Accurate crystal-based timers drive a microprocessor which calculates the rate of rise. This defines the volumetric flow rate. At the same time, extremely accurate temperature and absolute pressure sensors collect data used to calculate the mass flow rate. Product Benefits The performance of only the highest level metrology laboratories can now be yours Accurate primary standard for labs & industry Proven dimensionally-based primary standard accuracy backed by a rigorous uncertainty analysis