John Morris

Overview

The ASM Graph / ASM 142 series sets a new performance standard for an entry-level unit

General purpose leak detectors have always been synonymous with limited performance units. This belief was based on limited vacuum and electronic technologies available then to meet the key requirements of size and cost. Alcatel has once again revolutionised the world of leak detection, proving its prowess in helium leak detection.

The new universal leak detector model is the end result of an innovative engineering approach using the latest electronic technologies and vacuum concepts.

This rugged unit is undeniable proof that multipurpose no longer means compromise. On the contrary, the ASM Graph / ASM 142 series delivers unmatched features for a entry-level unit such as, a roughing capacity of 10 m³/h (7 cfm) with a usable helium sensitivity in the 0.00000000001 atm.cc/s range. In addition, its comprehensive bulletproof display panel loaded with advanced features available at your fingertips delivers a true user-friendly unit.

Dedicated to semi-conductor application the ASM Graph D+ offers you a compact and powerful unit into a clever package.

The modules of the ASM 142 series are based on the same well proven leak testing concept. They share the same basic components:
• High sensitivity analyser cell with dual filaments,
• Improved molecular drag pump model AMP007,
• Latest generation of electronics,
• Plastic cover and metal frame.

Compact and powerful helium leak detector, the ASM Graph D+ combines 14 m³/h clean, dry, roughing capacity with our high sensitivity analyser cell in very small foot print clean room compatible package.

Highly manoeuvrable, the system is mounted on a unique cart equipped with four large, full swivel wheels with brakes for easy movement through and around cluttered areas and over grilled floors such as Semiconductor Fabs.

Compartments for convenient storage of vacuum hardware and provisions for a helium bottle, are part of this clever package, all in a foot print of just 0.5m × 0.35m (20" × 16").

Click the picture for a closer look

Features

The ASM Graph series provides an unique operator interface with a touch screen including color graphic display, graphs and dynamic vacuum diagram.

The touch screen allows easy entry of your application parameters settings.

The two modes of operation, basic and advanced were specifically designed to meet any leak detection needs. Helium leak rate trend and behavior, inlet pressure change over time (for large leak detection), color graphs and full automation are among many features conveniently and easily accesible to the operator.

Additionally, an interactive dynamic vacuum diagram indicates the status of the leak detector internal vacuum components.

Benefits

SIMPLICITY
The simple design of this unit results in a quick learning curve for a new user.

It takes no more than a few minutes to get familiar with its operation.

In addition, the ASM Graph / ASM 142 series also offers evolved features to assist the operator in his daily test operation:
• Auto-calibration with temperature compensation
• Auto-Zero function
• Helium Signal Direct Readout function
• Full automation of the test cycle.

RUGGEDNESS
The ASM 142 series utilises well proven mechanical vacuum pump technology designed specifically for heavy usage in very harsh industrial environments. The helium stability of the rotary vane pump guarantees excellent stability of the helium signal.

The low rotational speed of the M.D.P. (Molecular Drag Pump) at 27000 rpm makes this unit totally bullet proof against accidental air inrushes. Further, it allows the leak detector to be moved while in operation.

The high compression ratio of the M.D.P. facilitates the gross leak test at a high pressure (7.5 Torr / 10 mbar) which speeds up the leak test process of outgassing parts.

The ASM Graph / ASM 142 series requires little maintenance and its internal layout allows easy access to all the components.

In addition, the rotary vane pump is equipped with a practical oil change device to speed-up the process.

VERSATILITY
With its 10 m³/h roughing pump capacity, the ASM 142 leak detector (standard version) delivers performance to address any leak detection application. Its unparalleled versatility makes it a truly universal unit, able to perform effectively both inboard and outboard leak tests.

In addition to these superior features, this unit offers a complete set of options and accessories to meet the requirements of any applications.

Since its introduction in 1999, the ASM 142 has become the most popular universal helium leak detector on the market. A combination of performance (the highest roughing capacity of its category), flexibility (multi-standard unit), and ruggedness (can work in any harsh environments), the ASM 142 is the answer to majority of leak detection applications. Small productions or maintenance, this unit excels and fears no competition.

Based on the same platform, the ASM 142 D (dry leak detector) and the ASM 142 S (dedicated sniffer unit) were released on the market a year after the ASM 142. They both benefit from the same advanced technology. The new ASM Graph series brings the 142 series to a new level of excellence.

Applications

These universal leak detectors can comply with a virtually limitless list of applications. Its remarkable versatility based on a smart design, allows many creative possibilities:

Maintenance applications and quality control of vacuum systems
• High helium pumping speed at the inlet port will deliver fast response time.
• A simple operator interface including a vocal synthesiser will provide a unique tool that will ease the operator tasks.
• A convenient transport cart will allow fast mobility while in operation.
Applications
- Semi conductor
- Research and development
- Cryogenic
- Aerospace industry
- Industries which use vacuum process

Production or quality control of components
• High roughing capacity will deliver fast cycle time.
• Advanced electronics will provide full automation of the test cycle.
• Integrated software will control and manage the operation with an auxiliary pump.
• Comprehensive interface capabilities such as discrete I/O and RS 232 will ease its interface with a P.L.C or/and a P.C.
Applications
- Mechanical industry (seals, valves, various small pieces)
- Instrumentation (sensors)

Outboard testing of pressurised parts (sniffing test mode)
• A unique "floating" background suppression device will deliver and guarantee a sensitivity in the 0.0000001 atm.cc/s range.
• The 142's ruggedness will allow its usage in very harsh industrial environments.
Applications
- Refrigeration
- Air-conditioning