Helium Calibrators

Variable-rate Refillable Sniffer Helium Calibrator

Features

The VSLT Adjustable (Variable) Leak-Rate Calibrators have been developed specifically to calibrate sniffer leak detectors and are designed with Teflon-permeation leak rate control elements to avoid the clogging problems common to Calibrators that have capillary leak elements. This is particularly important for small leak rates and industrial use.

The VSLT Accu-Flow™ Calibrated Leaks are available for adjustable leak rates in limited ranges within the usual values for "Sniffing" of 10-4 to 10-6 atm-cc/sec, as shown on the "Ordering" page linked above.

VTI calibrates each leak at three pressures/leak rates and provides a curve of leak rate vs. pressure. Using the curve, the fill/exhaust valve and the integral pressure gauge (to preserve NIST-traceability), the user changes the Helium pressure in the VSLT reservoir to obtain the specific leak-rate desired.

Why choose the VSLT Calibrator ?

  • WILL NOT CLOG OR BREAK - permeation leak element.
  • ADJUSTABLE LEAK RATE - by changing the pressure.
  • LONG TERM STABILITY - Low depletion rate.
  • CAN BE SET TO AN EXACT LEAK RATE - without the usual manufacturing variance.
  • REFILLABLE RESERVOIR - from the user's gas supply.
  • WIDE LEAK-RATE CHOICE - the full range that is used for sniffing.
  • NO FALSE READINGS - no large dead spaces.
  • EASY PROBE LOCATION - for repeatable results.
  • MEETS ISO REQUIREMENTS - NIST-traceable, A2LA-
    accredited Calibration Certification.

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