Handheld Particle Counters 3888 / 3889 / 3889-01
Six-channel handheld OPCs at 2.83 LPM (0.1 CFM) with 0.3 µm sensitivity for ISO 14644-1 cleanroom spot checks — ISO 21501-4 calibrated, battery-operated, internal pump, NIST-traceable certificate.
Products
| Model | Group | Positioning | Core fit |
|---|---|---|---|
| 3888 / 3889 / 3889-01 | Handheld OPC | 3-channel (3888) or 6-channel (3889) handheld optical particle counter | Cleanroom certification, pharmaceutical monitoring, IAQ survey |
Key Features
ISO 21501-4 compliant — 0.3 µm minimum
The optical sensor meets ISO 21501-4 single-particle optical sizing requirements. NIST-traceable calibration certificate supplied as standard — satisfying regulatory requirements for calibrated instruments used in pharmaceutical, medical device and semiconductor cleanroom classification.
6 channels simultaneous at 2.83 LPM (0.1 CFM)
All six particle size channels (0.3, 0.5, 1.0, 3.0, 5.0, 10.0 µm) are measured simultaneously in every sample. The 2.83 LPM (0.1 CFM) flow rate matches ISO 14644-1 Table A.1 sample volume requirements for Class 5–8 cleanroom classification sampling plans.
3889-01: Ethernet for monitoring integration
The 3889-01 variant adds Ethernet connectivity — enabling direct data feed into SCADA, building management systems and cleanroom monitoring platforms without an intermediate gateway. Ideal for fixed-point remote particle monitoring alongside portable use.
Optional hot-wire environmental sensor
An optional add-on hot-wire sensor measures air velocity (0.1–30 m/s), temperature and relative humidity at the sampling point — combining particle count and HVAC airflow data in one instrument pass during cleanroom qualification.
≥ 10,000 record memory with batch management
Internal memory stores time-stamped sample records. Multiple sampling locations, sample IDs and dates can be managed on-device for cleanroom classification campaigns across multiple rooms. USB or RS-232 export to PC for data analysis.
≥ 8 h battery — full-shift portable operation
Li-ion rechargeable battery sustains over 8 hours of continuous operation — enabling complete cleanroom certification campaigns without recharging interruption.
Technical Specifications
| Parameter | Unit | Value / Description |
|---|---|---|
| OPTICAL SENSOR | ||
| Light source | — | Semiconductor laser diode |
| Detection principle | — | Single-particle optical scattering (OPS) |
| Min. detectable particle size | µm | 0.3 at 50% counting efficiency |
| Counting channels | — | 6 simultaneous: 0.3 / 0.5 / 1.0 / 3.0 / 5.0 / 10.0 µm |
| Max. particle concentration | particles/L | 2,000,000 — coincidence loss < 5% |
| FLOW SYSTEM | ||
| Sample flow rate | LPM / CFM | 2.83 LPM / 0.1 CFM — internal self-priming pump |
| Flow accuracy | % | ±5% of nominal flow rate |
| Programmable sample time | s | 1 – 99 s |
| ENVIRONMENTAL SENSOR (optional) | ||
| Air velocity | m/s | 0.1 – 30.0 m/s (optional hot-wire add-on probe) |
| Temperature | °C | 0 – 50 °C range |
| Relative humidity | % RH | 10 – 95% RH non-condensing |
| USER INTERFACE | ||
| Display | — | Large backlit LCD — simultaneous 6-channel count display |
| Internal memory | records | ≥ 10,000 sample records |
| Printer | — | Optional internal thermal printer (model-dependent) |
| COMMUNICATION — MODEL DIFFERENCES | ||
| 3888 / 3889 interfaces | — | USB; RS-232 |
| 3889-01 interfaces | — | USB; RS-232; Ethernet — for network monitoring integration |
| POWER | ||
| Battery type | — | Rechargeable Li-ion |
| Battery runtime | h | ≥ 8 hours continuous operation |
| AC supply | V / Hz | 100 – 240 V / 50 – 60 Hz |
| PHYSICAL | ||
| Approximate dimensions W×H×D | mm | 120 × 230 × 75 |
| Weight | kg | Approx. 1.3 (without optional printer) |
| CALIBRATION | ||
| Calibration standard | — | NIST-traceable factory calibration certificate to ISO 21501-4 |
| Recommended interval | — | Annual — per ISO 14644-2 instrument management requirements |
Values are summarized for page-level selection. Confirm final model configuration, accessories and calibration certificate before order placement.
Applications
EU GMP Annex 1 Grade A–D classification
Pharmaceutical cleanroom ISO Class 5–8 classification and EU GMP Annex 1 Grade A/B/C/D monitoring. 0.5 µm channel for Grade A primary compliance data; 5.0 µm for macroparticle tracking per EU GMP requirements.
ISO Class 3–6 spot checks
Semiconductor fab cleanroom spot checks and trending at ISO Class 3–6. 0.3 µm sensitivity enables Class 4–5 classification; 3889-01 Ethernet for integration into fab monitoring.
ISO 14644-1 cleanroom certification
ISO Class 7–8 cleanroom certification for medical device manufacturing under ISO 13485 and EU MDR controlled environment requirements.
Operating theatre and pharmacy monitoring
Hospital operating theatre and pharmacy cleanroom airborne particle checks per HTM 03-01 (UK) and EN 15224.
ESD-controlled environment checks
IPC-A-610 Class 3 clean assembly environment verification and excursion investigation.
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