Ordering Information
The GPPT Calibrators can be ordered for a specified Helium Leak Rate within a wide range of values. When ordering or requesting a quotation, please provide the Part Number, confirm the Fitting needed, and state the specific Leak Rate requested including your preferred leak-rate units. Also, please specify the Manufacturing Variance ("Tolerance") that you can allow on that Leak Rate. The usual manufacturing variance is +/- 40% of the requested rate. An example specification is 2.0x10-8 atm-cc/sec +/- 40%. Alternatively, the allowable values as manufactured can be specified as 1 to 3x10-x, 4 to 6x10-x, or 7 to 9x10-x in a Leak Rate Range listed below.
Also, a "Special Range" manufacturing variance is available of +/- 15% of the requested rate. For this special variance, an "-SR" is added to the end of the Part Number and there is an additional cost. In all cases, the leak rate provided will be within the selected manufacturing variance and will be as close as we can make it to your specified rate. The actual rate, as calibrated, will be recorded on the Calibration Tag and the Certifications.
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 GPPT Series Part Numbers are constructed as follows:
GPPT-X-HE-YYYY-ZZZ
where X = the code for the Leak Rate Range required,
where YYYY = the fitting required
and ZZZ = the code for the reservoir size.
Valve Requirements - the addition of a Fill Valve is required on all leaks in the mid 10-6 range and larger due to the higher fill pressures. In these cases, -WFV is added to the end of the part number. For leaks without a shut-off valve, -NV is added.
Leak Rates Ranges Available and Example Part Numbers
| Leak Rate Ranges Available for the GPPT (Specify a value in the range) |
Code for Leak Rate Range (X) | Code for Fitting (YYY) | Sugg'ed Reservoir Size | Code for Reservoir Size(YYY) | Example Part Number |
|---|---|---|---|---|---|
|
1.0 to 9.9x10-4 atm-cc/sec 1.0 to 9.9x10-5 atm-cc/sec 1.0 to 9.9x10-5 atm-cc/sec 1.0 to 9.9x10-6 atm-cc/sec 1.0 to 3.0x10-6 atm-cc/sec 1.0 to 9.9x10-7 atm-cc/sec 1.0 to 9.9x10-8 atm-cc/sec |
4 5 5 6 6 7 8 |
118T KF25 KF40 MCFF 1/2T KF16 2CFF |
1000 1000 500 300 300 110 110 |
1000DOT 1000DOT 500DOT 300DOT 300DOT (Blank) (Blank) |
GPPT-4-HE-118T-1000DOT-WFV GPPT-5-HE-KF25-1000DOT-WF GPPT-5-HE-KF40-500DOT-WFV GPPT-6-HE-MCFF-300DOT-WFV GPPT-6-HE-1/2T-300DOT GPPT-7-HE-KF16 GPPT-8-HE-2CFF |
