On-site Surface Particle MonitorPartSens
Measures numbers and sizes
of deposited particles in 10 seconds.
- ISO14644-9
- ISO14644-13
- VDA19.2
PRODUCTS
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Cleanroom
Solutions -
Fluid Contamination Solutions
- Online Fluid Contamination Monitoring System
- PDS.TM
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Human Health Solutions
Innovative “surface cleanliness” monitoring method
OVERVIEW
Particles size of 5µm or more called "macroparticles" are difficult to measure with an air particle counter as they fall and deposit in a cleanroom. These uncontrolled particles fall and deposit on the surfaces of manufacturing systems, contaminating the manufacturing environment. Furthermore, these particles redisperse in the air and be transported with physical contacts by people and the systems. Once these macroparticles are deposited, it is difficult to control the contamination. An appropriate cleaning program must be established and effective cleaning must be performed to solve the contamination problems.
PRODUCT
PartSens is a portable surface monitor that instantly measures the size and number of macroparticles on any surface of a cleanroom manufacturing environment. PartSens classifies the particles into reflective, non-reflective, and fiber. It evaluates various applications related to surface cleanliness such as cleaning efficiency of pre-cleanroom, air showers, floors, walls, equipment, clothes, gloves, and products.
Technical Characteristics
- Measurement Technology and Related Standards
- ISO14644-9 ISO14644-13
VDA19.2
- Measurement Range
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- Non-metallic particles
2µm - >3000µm - Metallic particles
25µm - >3000µm - Fibers
50µm - >3000µm
- Non-metallic particles
- Measurement Principle
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PartSens adopts the ISO based measurement principle and the only instrument listed in VDA19.2 “Technical Cleanliness in Assembly”
The measurement principle of PartSens is in accordance with “direct and indirect measuring procedures” in VDA19.2, as well as “Oblique, glancing, and side-light measurement systems,” the method described in ISO14644-9 Annex D.2.7. As shown in the diagram on the right, the LED lights are illuminated from both sides of the measurement area. A CCD camera captures all surface particles as reflected light via the lens. The maximum diameter and the number of particles are counted in a few seconds from a binary image. This unique technology that detects three-dimensionally raised particles, instead of distinguishing them from the background pattern and simple banalization is suitable for monitoring particles on flat surfaces. Apply Tape Lift Pads on rough surfaces to capture particles trapped in the gaps.Glancing light technology
- Measuring Method
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Tape Lift Pads for measuring cleanliness levels of all surfaces Tape Lift Pads are adhesive strips especially designed for PartSens. These pads enables cleanliness evaluation of particles found on rough and/or curved surfaces such as cleanroom suites, systems, and tools. The use of the pads widens the applications of PartSens, for example, air shower efficiency can be monitored by capturing particles from cleanroom suites before and after entering the room. Tape Lift Pads hold a remarkable 99% adhesion efficiency of particles from smooth surfaces. Tape Lift Pads serve every customer's applications.Recommended storage conditions
Temperature: 10 - 20℃
Relative Humidity: 60 - 70%
- Displaying Results
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Featuring new “particle classification” for easy analysis of contamination trends PartSens offers an additional feature that allows users to analyze the sources of contamination in a simplified way. Measured particles are classified into 3 categories (metallic, non-metallic particles, and fibers). Each category is indicated in different colors. Particle size distribution will allow users to see the contamination trends clearly and take necessary measures to improve the cleanliness level.Features of particle classification
- Application
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Optimizing cleaning programs The only way to remove particles on a surface is to establish effective cleaning programs for each surfaces. Clean products and environment can be achieved by targeting the cleanliness level and evaluating and optimizing the cleaning program to reach the goal. The target cleanliness is determined by:
- Set the target cleanliness level (the number of the critical particle size/cm2) for each surface and location.
- Implement changes to cleaning tools, procedures, number of people, duration, frequency and verify with PartSens.
- Document effective methods that reaches the targeted cleanliness level.
- Assign trained persons to carry-out cleaning.
Applications of PartSens
- Accessories
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- Measurement stand
- 2 Batteries
- Power adapter
- Travel case
- USB
- Consumable goods
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- Tape Lift Pads
- Options
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- Bluetooth printer
- Printer paper rolls
Specification
Base unit
| Measuring principle | Glancing light technology (in accordance with ISO14644-9) |
|---|---|
| Detectable items | Particle sizes , numbers , classifications (particles and fibers) |
| Detection range(Feret-max) | Non-metallic particles 2µm - >3000µm Metallic particles 25µm - >3000µm Fibers 50µm - >3000µm |
| Particle size allocation | According to VDA19.1 and ISO16232 |
| Display types | Distributive, Distributive/1000 cm², Cumulative, Cumulative/1000 cm² |
| Measuring time | <10 sec. |
| Data storage capacity | 300 data |
| Screen type | Touch screen, 12.1” TFT |
| Languages | English, Japanese, German, French |
| Screen resolution | 3872 × 2764 (pixels) |
| Outputs | Network ( TCP/IP ) , USB Type A, HDMI |
| Power supply | AC 100-240 V AC-1, 4 A 50/60 Hz | DC 24 VDC @ 5A Lithium-ion battery 2 × Nominal Voltage 11.1 V, 7800 mAh, 86, 58 W max. |
| Weight | 7.7kg, 6.7kg |
| Application temperature range | 5 - 30 ℃ ; 20 - 95% (RH) non-condensing |
| Storage conditions | 0 - 50 ℃ ; up to 98% (RH) non-condensing |
Measuring head
| Measuring area | 2.68cm2 (19.36 × 13.82mm) |
|---|---|
| Data transmission | WLAN 2.4 GHz |
| Range of mobile measuring head | Operating range max. 10 meters away from the base unit |
| Power supply | Lithium-ion battery |
| Calibration | Once a year recommended |
| Measuring device for tape lift pads | Included |
| Screen type | Touch screen, LCD |
More Information
More Details
Practical, Easy, and Accurate monitoring
Traditionally, the use of airborne particle counters and microscopes were believed to be the best method for assessing a surface cleanliness level. However, these methods are not practical for monitoring macroparticles (≥5µm) because airborne particle counters can only detect particles that are small enough to keep floating in the air and can be vacummed by the particle counter, leaving all the macroparticles which falls onto surfaces undetected. Microscopes are not effective either, for they have a possibility of cross-contaminating samples. Cleanroom flashlights for visualizing contaminants also cannot detect macroparticles for cleanrooms required to control particles smaller than 100µm. PartSens is the only monitoring device to be listed in VDA 19.2 “Technical cleanliness in assembly” that replaces obsolete inspection methods, leading an innovative approach to prevent “transfer,” “contact,” and “deposition” of particles in a clean environment.
Monitor “deposition” and “contact transfer” of particles Learning the process of surface contamination to know the risks
Depending on the mass and the air current, particles larger than ≥5-25µm eventually deposits and contaminate all surfaces. Particles on surfaces cannot be removed by Fan Filter Units, hence referred to as “unfiltered particles.” Walking, cleaning or any other activities cause these particles to be transferred to other areas of the facility or re-dispersed into the air, creating higher risks of contamination.
Percentage of particles removed by cleanroom airflow or deposited onto surfaces（room height 2.7m）
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