JH-AS Vibratory Sieve Analyzer
| Brand | Jihepu (Jinan Hepu) |
|---|---|
| Origin | Shandong, China |
| Model | JH-AS |
| Price Range | USD 700 – 1,400 |
| Power Supply | AC 220 V ± 22 V, 50 Hz ± 1 Hz |
| Frequency | 3000 or 6000 cycles/min |
| Amplitude Range | 0–3 mm (continuously adjustable) |
| Max. Sieve Stack Height | 400 mm (8 × 50 mm sieves) |
| Sieve Diameter Options | 200 mm or 300 mm |
| Display | Digital LED |
| Operating Modes | Subtle vibration / Continuous vibration |
| Sample Type Compatibility | Dry and wet sieving |
| Max. Mesh Size | ≤325 mesh |
| Net Weight | 35 kg |
Overview
The JH-AS Vibratory Sieve Analyzer is a benchtop electromagnetically driven particle sizing instrument engineered for standardized dry and wet sieve analysis in quality control and R&D laboratories. It operates on the principle of controlled vertical oscillation—generated by a precision electromagnetic actuator—to induce particle stratification and separation across stacked test sieves according to ISO 9048, ASTM E11, and USP <786> guidelines. Unlike rotary or tapping sievers, the JH-AS employs linear vibrational energy with programmable amplitude and frequency, minimizing particle attrition and ensuring high reproducibility in sieve residue distribution. Its design eliminates rotating mechanical components, reducing maintenance requirements and enhancing long-term operational stability. The system supports up to eight nested sieves (each 50 mm in height), enabling multi-fractional particle size distribution (PSD) profiling in a single run—ideal for routine QC in pharmaceutical granulation, metal powder sintering feedstock evaluation, food ingredient grading, and cosmetic pigment classification.
Key Features
- Electromagnetic drive system delivering precise, repeatable vibration at 3000 or 6000 cycles per minute (50/100 Hz nominal), compliant with standard sieve testing frequencies defined in ISO 2591-1 and ASTM D6913.
- Continuously adjustable amplitude (0–3 mm) with calibrated scale on the sieve head, allowing empirical optimization for cohesive, fibrous, or fragile materials.
- Dual-mode operation: “Subtle vibration” for delicate samples (e.g., agglomerated APIs or spray-dried lactose); “Continuous vibration” for rapid throughput of free-flowing powders.
- Digital LED display showing real-time elapsed time and selected amplitude setting—no analog dials or manual timing required.
- Integrated electronic timer with automatic shutdown, supporting programmable durations from 1 second to 99 minutes and 59 seconds.
- Modular sieve platform compatible with standard 200 mm and 300 mm diameter test sieves (ISO 3310-1, ASTM E11), including stainless steel, brass, and nylon mesh options.
Sample Compatibility & Compliance
The JH-AS accommodates both dry and wet sieving protocols, making it suitable for hygroscopic, electrostatic, or density-segregated powders where liquid dispersion enhances resolution. For wet sieving, optional splash guards and drain trays are available to maintain operator safety and lab hygiene. All mechanical and electrical components meet CE marking requirements for laboratory equipment (2014/30/EU EMC Directive and 2014/35/EU LVD). While not certified to GLP or GMP out-of-the-box, its digital parameter logging, non-volatile timer memory, and absence of mechanical wear parts support audit-ready documentation when integrated into validated workflows. Users may configure SOPs aligned with FDA 21 CFR Part 11 expectations via external data capture (e.g., timestamped manual logs or camera-recorded displays).
Software & Data Management
The JH-AS operates as a standalone hardware platform without embedded software or network connectivity. Parameter settings (amplitude, duration, mode) are retained in non-volatile memory across power cycles. Data output is visual only—results require manual transcription into LIMS or Excel-based PSD reporting templates. For laboratories requiring automated data integrity, integration is achievable via external USB time-lapse imaging or industrial PLC-triggered I/O signals (optional relay interface kit available upon request). No proprietary drivers or cloud services are involved; all user interaction remains local and deterministic.
Applications
- Pharmaceutical: Granule size distribution verification pre-compression; excipient lot release testing per USP <786>.
- Metallurgy: Metal powder classification for additive manufacturing feedstock qualification (ASTM F3049).
- Food & Agriculture: Flour, starch, and grain milling fractionation per AACC Method 23–11.01.
- Cosmetics: Pigment and talc particle grading to ensure uniform suspension and texture consistency.
- Chemicals: Catalyst support material screening and polymer resin pellet sizing.
FAQ
What sieve standards does the JH-AS support?
It accepts all ISO 3310-1 and ASTM E11 compliant test sieves with 200 mm or 300 mm diameters and standard frame heights (≤50 mm per sieve layer).
Can the JH-AS perform wet sieving safely?
Yes—when used with an optional silicone splash guard and elevated drain tray, it complies with basic lab wet-process safety practices. No internal electronics are exposed to moisture.
Is calibration traceable to national standards?
Amplitude and frequency are factory-set using calibrated vibration analyzers; users may verify performance annually with a handheld laser vibrometer (e.g., PCB Piezotronics Model 356B18).
Does the unit include sieve stacks or accessories?
No—sieves, receivers, covers, and wet-sieving kits are sold separately to allow customization based on application-specific mesh series and material compatibility.
What maintenance is required?
None beyond periodic cleaning of the sieve deck and electromagnetic housing with isopropyl alcohol; no lubrication, belt replacement, or bearing service is needed due to solid-state actuation.
