Ordering Information
For an order or quotation for a CLO Leak, please provide the Part Number, confirm the Inlet Fitting for connection to your gas source line, and confirm the Outlet Fitting for connection to the test system or part. It is also necessary to specify the Gas, the Inlet Pressure from your gas line, and the Outlet Pressure (usually vacuum or 1 atmosphere), all as used in your test and to be used for the calibration. Any dimensional requirements should also be noted.
In addition, for CLO's to be used at one Leak Rate, please state the specific Leak Rate requested (at the specified Inlet and Outlet Pressure) and your preferred leak-rate units. Also, the Manufacturing Variance ("Tolerance") that you can allow on that Leak Rate should be specified as +/- 40% (the normal allowance), or as +/- 15% (the "Special-Range Variance"), for which there is an additional cost and an "-SR" added to the part number. An example specification is 2.0x10-5 atm-cc/sec +/- 40%. In all cases, the leak rate provided will be as close as we can make it to your specified rate, and the actual rate, as calibrated, will be recorded on the Calibration Tag and the Certifications.
CLO Leaks can also be calibrated at multiple pressures to provide a range of adjustable leak rates, for example covering values from 1 to 9x10-5 atm-cc/sec using three pressures from 15 to 200 psig. VTI provides a curve of Leak Rate vs. Pressure based on the calibrations. This allows the leak rate to be changed by changing the inlet pressure and allows exact leak rates to be selected without the limitation of the manufacturing variance. For these adjustable-rate CLO's, the Leak Rate Range requested and your available Inlet Pressure Range, as well as your Outlet Pressure, should also be specified. VTI can advise on the leak-rate range achievable based on your available pressure range.
Example Fittings Available
Please contact us for other fitting requirements.
| Code: | Description: |
|---|---|
| 118T | 1-1/8" OD Port Tube |
| 4FVCR | ¼" Female VCR |
| 4MVCR | ¼" Male VCR |
| MCFF | 1.33" OD Mini Conflat Flange |
| 2CFF | 2.75" OD Conflat Flange |
| ½T | ½" OD Tube |
| KF16 | ¾" OD ISO Flange |
| KF25 | 1" OD ISO Flange |
| KF40 | 1.5" OD ISO Flange |
| 118T/34T | 1-1/8" OD Tube with step to ¾" Tube |
| 4MPT | ¼" Male Normal Pipe Thread |
Part Number Build-Up
The CLO Series Part Numbers are constructed as follows:
CLO-X-NA-BB-YYYY-ZZZZ
where X = the code for the Leak Rate Range,
where N = number of calibration points,
where A = cal method - (C for He P for other gases),
where BB = Gas to be used,
where YYYY = the INLET fitting required,
where ZZZZ = the OUTLET fitting required.
Example Gases Available
Helium (HE), Argon (AR), Nitrogen (N2), Hydrogen (H2), Carbon Dioxide (CO2), Oxygen (O2), Air (AIR), Methane (CH4), Sulphur Hexafluoride (SF6), Refrigerants ("R"#), Xenon (XE), Deuterium (D2), Mixed gases (MIX).
Leak Rates Ranges Available and Example Part Numbers
| Leak Rate Ranges Available for the CLO (Specify a value in the range for 1 cal' point or range to be covered by 3 cal' points) |
Leak Range Code (X) | Cal Pts & Type Code (NA) | Gas Code (BB) | Inlet Fitting Code (YYYY) | Outlet Fitting Code (ZZZZ) | Example Part Number |
|---|---|---|---|---|---|---|
|
1.0 to 9.9x10-1 atm-cc/sec 1.0 to 3.0x10-2 atm-cc/sec 1.0 to 9.9x10-3 atm-cc/sec 1.0 to 9.9x10-4 atm-cc/sec 1.0 to 9.9x10-5 atm-cc/sec 5x10-5 to 5x10-6 atm-cc/sec 1.0 to 9.9x10-6 atm-cc/sec |
1 2 3 4 5 5/6 6 |
1C 1P 3P 1P 1P 3P 3C |
HE AR SF6 AIR XE H2 HE |
4FVCR 4MVCR KF25 4FVCR MCFF 1/4T 4MPT |
4MVCR MCFF KF40 4MVCR 2CFF 2CFF 4MPT |
CLO-1-1C-HE-4FVCR-4MCR CLO-2-1P-AR-4MVCR-MCFF CLO-3-3P-SF6-KF25-KF40 CLO-4-1P-AIR-4FVCR-4MVCR CLO-5-1P-XE-MCFF-2CFF CLO-5/6-3P-H2-1/4T-2CFF CLO-6-3C-HE-4MPT-4MPT |
