The 109241 internal calibrated leak is a built-in helium reference source for compatible Pfeiffer Adixen ASM 122, ASM 142 and ASM 310 leak detectors. It supports automatic sensitivity checks and stable quantitative measurements during industrial leak testing. LeakLab can supply and replace the module as part of leak-detector service work; contact us to confirm the exact instrument version, documentation and availability.
Description
Replacement components for helium leak detectors
109241 Internal Calibrated Leak for ASM 122, ASM 142 and ASM 310
The calibrated internal leak identified as ASM 122 / ASM 142 / ASM 310, Internal 50 CC NO HZ, part number 109241 is intended for setup and sensitivity checks of compatible Pfeiffer Adixen helium leak detectors. It provides a stable reference helium flow for the instrument's internal calibration routine.
LeakLab can supply the 109241 module for repair or planned replacement. Confirm the detector model, serial-number range, connection and required documentation before ordering.
Purpose and Applications
The 109241 calibrated leak is used as a built-in helium reference source in a mass-spectrometer leak detector. During a self-check, the instrument introduces the internal-leak flow into the analyzer and compares the response with its configured value. This process:
- checks the leak detector indication;
- confirms that measurement-channel sensitivity has been maintained;
- supports documented leak-test measurement assurance when the individual reference-leak documentation provides the required traceability.
Typical applications include leak testing of heat exchangers, compressors, pipeline valves, vacuum components and other products for which a quantitative leak-rate result is required.
Compatibility
| Leak detector | Configuration | Function of the 109241 module |
|---|---|---|
| ASM 122 | Stationary or mobile mass-spectrometer leak detector | Internal reference leak for self-checks and periodic calibration |
| ASM 142 / ASM 142D | Leak detector for vacuum and sniffer methods | Reference helium source integrated into the analyzer path |
| ASM 310 / ASM 310D | Compact leak detector for integral and local testing | Internal leak for regular sensitivity and indication-scale checks |
Model names alone are not sufficient to guarantee fit. Compatibility must be checked against the detector's complete configuration and service documentation.
Technical Information
| Parameter | Value | Notes |
|---|---|---|
| Product designation | Calibrated internal leak for ASM 122 / ASM 142 / ASM 310 | Built-in calibration source |
| Referenced part numbers | 2000049790 / 109241 | Adixen / Pfeiffer Vacuum references stated in the source product record |
| Referenced item number | PN20048 | Supply-list reference stated in the source product record |
| Tracer gas | Helium (He) | Used as the tracer gas for leak testing |
| Installation | Internal | Installed inside the detector and connected to its analyzer system |
| Nominal flow | Unit-specific | Use the exact value and temperature correction stated in the certificate or calibration documentation for the individual reference leak |
| Connection | Dedicated connection for ASM 122 / 142 / 310 | Provides a leak-tight connection to the internal instrument path; confirm the exact version before purchase |
| Construction | Sealed helium reservoir with a diffusion element | Flow is determined by the element properties and helium pressure inside the reservoir |
| Indicative service life | Up to 10 years under the stated storage and operating conditions | This source-record figure must be checked against the documentation for the individual product series and unit |
Operating Principle
The gas-flow measure consists of a sealed volume filled with helium above atmospheric pressure. A helium-permeable element in the body produces a continuous, controlled flow by diffusion.
When connected to the leak detector, tracer gas enters the vacuum path and then the mass-spectrometer cell, where the detector measures the response. The manufacturer establishes the temperature dependence for the applicable gas-flow measure. Use the temperature correction stated in the individual certificate or calibration record.
Benefits of an Internal Reference Leak
- Provides a repeatable reference signal under controlled temperature conditions.
- Allows the instrument's condition to be checked and documented before critical tests.
- Enables operator-initiated calibration without opening the system or connecting an external reference leak.
- Protects the module from routine handling damage by locating it inside the instrument.
- Shortens routine instrument-check time and reduces production-line downtime.
Supply and Service
LeakLab can supply the 109241 calibrated leak separately or as part of a service kit for a compatible Pfeiffer Adixen leak detector. The documentation and completeness of each unit should be checked against the order requirements, particularly where a regulated or audited measurement process applies.
| Option | Scope | Result |
|---|---|---|
| Replacement component supply | Shipment of a 109241 calibrated leak with the documentation agreed for the order | Module prepared for installation after compatibility and documentation checks |
| Service replacement | Removal of the previous leak, installation and leak-tightness check of the replacement, followed by instrument setup | Instrument checked with the replacement internal reference source |
| Leak-detector maintenance | Vacuum-section inspection, consumable replacement and testing with internal and external reference sources as agreed | Documented functional assessment before return to operation |
Operating and Replacement Recommendations
- Check the detector with its internal leak before each shift or series of critical tests, as required by the applicable procedure.
- Compare the detector reading with the documented unit-specific flow after applying the stated temperature correction.
- If the result deviates materially, repeat calibration and diagnose the instrument.
- Plan replacement according to the instrument manufacturer's maintenance instructions and the results of calibration or performance checks.
- Store spare calibrated leaks in closed packaging within their specified temperature and humidity range.
The 109241 internal calibrated leak is an important measurement-assurance component for compatible ASM 122, ASM 142 and ASM 310 instruments. Contact LeakLab with the complete detector identification to confirm compatibility, delivery options, documentation and service scope.
