Buying guides / Brand comparison
Helium Leak Detector Brand Comparison
Wayeal vs. INFICON, Leybold & Pfeiffer
This guide compares Wayeal SFJ-231 with best-selling models from INFICON, Leybold and Pfeiffer: UL1000, PHOENIX Quadro wet and ASM 340.
The Wayeal advantage
Sensitive detection. A practical working setup.
Core vacuum performance to match
All four models list a vacuum detection limit of 5 × 10⁻¹² mbar·L/s and a response time of <1 s. Wayeal meets the same listed core specifications for sensitive vacuum leak detection.
A high-capacity backing pump
The listed SFJ-231 configuration uses a Leybold D16C backing pump, with the highest pump-speed rating in this comparison at 50 Hz. Confirm the installed pump and validate evacuation time on your workpiece.¹
Quick startup. Clear operation.
Wayeal lists startup within two minutes, matching Leybold and below the listed figures for INFICON and Pfeiffer. Its 7-inch color touchscreen also offers a larger display than the UL1000’s listed 3.5-inch LCD.
More included in the configuration
RS232, RS485 and two USB ports support equipment communication and data workflows. The mobile cart is included, while it is listed as an extra-cost accessory for the Leybold and Pfeiffer configurations.²
Four models. One view.
Compare the specifications
Compare these specific models and listed configurations. Vacuum and sniffer limits are shown separately; pump ratings describe the backing pump, not measured test-cycle performance.
Scroll horizontally to see all four models →
| Specification | WayealSFJ-231  | INFICONUL1000  | LeyboldPHOENIX Quadro wet  | PfeifferASM 340  |
|---|---|---|---|---|
| Detection performance | ||||
| Minimum detectable leak rate · vacuummbar·L/s · lower is more sensitive | 5 × 10⁻¹² | 5 × 10⁻¹² | 5 × 10⁻¹² | 5 × 10⁻¹² |
| Minimum detectable leak rate · sniffermbar·L/s · lower is more sensitive | 5 × 10⁻⁸ | 5 × 10⁻⁸ | 1 × 10⁻⁹ | 5 × 10⁻⁸ |
| Maximum inlet pressurePa | 1,500 | 1,500 | 1,500 | 2,500 |
| Response timeListed detector response | <1 s | <1 s | <1 s | <1 s |
| Startup timemin | ≤2 | ≤3 | ≤2 | 3 |
| Backing pump · listed 50 Hz configuration¹ | ||||
| Backing-pump modelRotary vane | Leybold D16C | Leybold D16B | Leybold D2.5 E | Pfeiffer Pascal 1015 SD |
| Backing-pump pumping speed¹m³/h · 50 Hz · pump rating | 17.01 | 16.5 | 2.5 | 14 |
| Operation & included configuration² | ||||
| Operator display | 7-inch color LCD touchscreen | 3.5-inch LCD | 7-inch touchscreen | 7-inch touchscreen |
| Communication interfaces | RS232, RS485, 2 × USB | RS232 | RS232, RS485, 2 × USB | RS232, 2 × USB |
| Mobile cart² | Included | Included | Extra-cost accessory | Extra-cost accessory |
| Dimensions · W × D × H²mm · listed configurations | 645 × 678 × 965 | 1,068 × 525 × 850 | 495 × 475 × 318 | 547 × 375 × 389 |
How to read this comparison
1. Pump configuration: Figures are the listed backing-pump ratings at 50 Hz. They are distinct from helium pumping speed and complete-detector evacuation performance. Pump options and frequency affect the applicable rating.
2. Configuration scope: Cart inclusion and dimensions refer to the listed configurations. The dimensions may include different accessories; confirm the complete installed footprint and what is included in the quote.
3. Product images: Competitor photographs come from the supplied comparison. The INFICON photograph shows a UL1000 fab, while the comparison specifies UL1000. Images illustrate the product families; pictured configurations may differ from the quoted configuration.
Units: 1 mbar·L/s = 0.1 Pa·m³/s. The shared vacuum limit of 5 × 10⁻¹² mbar·L/s equals 5 × 10⁻¹³ Pa·m³/s.
Make your shortlist work harder
Put the SFJ-231 to the test on your application.
Share your workpiece, leak-rate limit, test method and target cycle time. Ask Wayeal for a configuration recommendation and a quotation matched to your process.
Discuss your application View SFJ-231 product details →Questions buyers ask
Helium leak detector comparison FAQs
Does Wayeal SFJ-231 match INFICON UL1000, Leybold PHOENIX Quadro wet and Pfeiffer ASM 340 in vacuum sensitivity?
Yes. Wayeal SFJ-231, INFICON UL1000, Leybold PHOENIX Quadro wet and Pfeiffer ASM 340 all list a minimum detectable leak rate of 5 × 10⁻¹² mbar·L/s in vacuum mode. This is equivalent to 5 × 10⁻¹³ Pa·m³/s. It is a detector specification; the achievable result on your part also depends on the fixture, vacuum background and test method.
Why consider the Wayeal SFJ-231?
The SFJ-231 combines the same listed vacuum sensitivity and sub-second detector response as the compared models with a high-capacity backing pump, startup within two minutes, a 7-inch touchscreen, RS232 and RS485 communication, two USB ports and an included mobile cart. Evaluate the complete configuration against your production requirements.