HELIUM CALIBRATED LEAK STANDARDSFSLT Sniffer-Detector Calibrators

The FSLT Model CALIBRATORS FOR SNIFFER-TYPE HELIUM
LEAK DETECTORSThe FSLT Helium Leak Standards have been developed
specifically to calibrate sniffer leak detectors and toavoid the clogging problems common to Calibratorsthat have a capillary leak element. This is particularly
important for small leak rates and industrial plant use.
The FSLT Accu-Flow™ Calibrated Leaks are available
for any specific leak rate within the usual range for“Sniffing” of 10-4 to 10-6atm-cc/sec. They can be usedwith all makes of leak detectors.

Choosing the FSLT Calibrator
WILL NOT CLOG OR BREAK – has permeation
type leak element of Teflon®.
FIXED LEAK RATE – for simple operation.
SPECIFY AN EXACT LEAK RATE – your test
point.
WIDE LEAK-RATE CHOICE – the full range that isused for sniffing.
NO FALSE READINGS - no large dead spaces.
EASY PROBE POSITIONING – for repeatableresults.
MEETS ISO REQUIREMENTS - NIST-traceable,
A2LA-accredited Calibration Certification.

As the major manufacturer of Calibrated Leaks
for all gases, all leak rates, and all makes ofleak detectors, VTI supplies them worldwide tousers, distributors, and other manufacturers.
These Accu-Flow™ Leak Standards arerecognized internationally for their superior
quality construction and calibration.

VTI’s Calibration
Laboratory is Accreditedby the American
Association forLaboratory Accreditation.

Diagram illustrating FSLT configuration andinterface details
The “point-source” design for the gas flow assuresthat excessive Helium gas will not accumulate in“dead spaces”. Any trapped gas causes erroneous
high readings during detector calibration, which can later
result in “passing” bad product.

VACUUM TECHNOLOGY INCORPORATED Oak Ridge, Tennessee USA
Toll-Free: 800-704-4774

Fax: 865-481-3788
sales@vacuumtechnology.com
www.vacuumtechnology.com

HELIUM CALIBRATED LEAK STANDARDSFSLT Sniffer-Detector Calibrators
ORDERING INFORMATIONThe FSLT Calibrators can be ordered for a single specified Helium leak rate within a wide range of values.
When ordering or requesting a quotation, please provide the Part Number and also specify the Leak Raterequested using the full description of both the rate and the leak-rate units that you are requesting (forexample: 2.0x10-4 atm-cc/sec). Also, please specify the manufacturing variance (“tolerance”) that you canallow on that Leak Rate as +/- 40%. or +/- 15%. The usual manufacturing variance is +/- 40% of the requested
rate. (For the example rate above, the allowable range as manufactured would be from 1.2 to 2.8x10-4.) A“Special Range” variance is available of +/- 15%. (For the example, this would allow the leak rate, asdelivered, to be from 1.7 to 2.3x10-4.) For this special manufacturing variance, an “-SR” is added to the endof the Part Number and there is an addition of $200 to the price of the Leak.
Please contact us for assistance if you have any technical or ordering questions or want a customized Leakor manufacturing variance. Other leak-rates units, such as Torr-liters/sec, can be specified and calibration
data will be reported in the units requested.
“Special Orders” are everyday products for us ! Just let us know what you need !

PART NUMBER BUILD-UP

ORDER CODESThe FSLT Part Numbers are constructed as follows:
FSLT-X-HE-YYYYYY-WFVwhere X = the code for the Leak Rate Range andYYYYYY = the code for the size of Reservoir.
As noted above, an “-SR” is added to the end of thePart Number to identify the special manufacturing
variance of +/- 15% on the Leak Rate (instead of theusual +/- 40% variance).
The X and YYYYYY codes are listed in the box.

X CodeFor Leak Rates from:456

1.0 TO 9.9x10-4 atm-cc/sec
1.0 TO 9.9x10-5 atm-cc/sec
1.0 TO 9.9x10-6 atm-cc/sec

Y CodeFor Reservoir size:

150DOT
300DOT
500DOT
1000DOT

150cc
300cc
500cc
1000ccThe FSLT model is identified as a Fixed-rate Calibrated Leak with a Teflon-permeation leak element that is
specifically designed for calibrating Sniffer-type leak detectors. The “HE” in the part number identifies thisas a Helium Calibrated Leak and the “WFV” designates the particular Teflon-packed stainless steel Fill Valveused on this product.

COMMON PART NUMBERS FOR FSLT MODEL LEAKS
Common Part Numbers

For a specified Value in this Range:

FSLT-4-HE-1000DOT-WFVFSLT-4-HE - 500DOT-WFVFSLT-5-HE - 500DOT-WFVFSLT-5-HE - 300DOT-WFVFSLT-5-HE - 150DOT-WFVFSLT-6-HE - 150DOT-WFVFSLT-6-HE - 300DOT-WFV

1.0 TO 9.9x10-4 atm-cc/sec
1.0 TO 3.0x10-4 atm-cc/sec
1.0 TO 9.9x10-5 atm-cc/sec
1.0 TO 9.9x10-5 atm-cc/sec
1.0 TO 3.0x10-5 atm-cc/sec
1.0 TO 9.9x10-6 atm-cc/sec
1.0 TO 9.9x10-6 atm-cc/sec

Reservoir Size
1000cc
500cc
500cc
300cc
150cc
150cc
300cc

Other leak rates and reservoir sizes are available – just ask us !

VACUUM TECHNOLOGY INCORPORATED Oak Ridge, Tennessee USA
Toll-Free: 800-704-4774

Fax: 865-481-3788
sales@vacuumtechnology.com
www.vacuumtechnology.com
FSLT-DATA-08/2004-Rev1