Lascar EL-USB-2-LCD Temperature and Humidity Data Logger
| Origin | UK |
|---|---|
| Manufacturer Type | Authorized Distributor |
| Origin Category | Imported |
| Model | EL-USB-2-LCD |
| Pricing | Available Upon Request |
| Temperature Range | −35 °C to +80 °C |
| Humidity Range | 0–100 %RH |
| Temperature Accuracy | ±0.5 °C |
| Humidity Accuracy | ±3 %RH (20–80 %RH), ±5 %RH (outside) |
| Memory Capacity | 16,379 readings |
| Battery Life | Up to 1 year (typical at 25 °C, 2-min logging interval) |
| Display | Integrated LCD (shows real-time temp/RH, min/max, status) |
| Interface | USB-A plug-and-play for data download and configuration |
| Logging Interval | Configurable from 1 second to 12 hours |
| Operating Environment | Indoor, non-condensing environments |
Overview
The Lascar EL-USB-2-LCD is a compact, self-contained temperature and relative humidity (RH) data logger engineered for traceable environmental monitoring in regulated and logistics-critical applications. Utilizing a high-stability capacitive humidity sensor and precision NTC thermistor, the device captures time-synchronized dual-parameter measurements under ISO/IEC 17025-aligned metrological principles. Its integrated LCD provides immediate visual verification of current conditions, min/max extremes, battery status, and logging state—eliminating dependency on external readers during transit or storage audits. Designed for deployment in pharmaceutical cold chain validation, food transport compliance, laboratory stability chambers, and warehouse environmental qualification, the EL-USB-2-LCD delivers GLP-compliant, timestamped datasets with inherent auditability via embedded firmware timestamps and non-volatile memory.
Key Features
- Integrated backlit LCD display showing real-time temperature (°C/°F), relative humidity (%RH), min/max values, battery level, and logging status
- USB-A direct-connect interface—no dongles or drivers required; compatible with Windows, macOS, and Linux via Lascar’s free EL-USB software
- Configurable logging interval from 1 second to 12 hours, supporting adaptive sampling strategies for dynamic thermal profiles
- 16,379 measurement storage capacity with circular buffer overwrite protection and optional alarm-triggered event logging
- Ruggedized ABS housing rated IP54 for dust resistance and limited water splashing exposure—suitable for palletized freight, refrigerated trucks, and ambient storage areas
- Calibration traceable to UKAS-accredited standards; factory calibration certificate available upon request (NIST-traceable options supported)
Sample Compatibility & Compliance
The EL-USB-2-LCD operates reliably across standard ambient and controlled-environment conditions (−35 °C to +80 °C; 0–100 %RH), with optimized performance in the 20–80 %RH range where humidity accuracy is ±3 %RH. It complies with key regulatory frameworks governing environmental monitoring: FDA 21 CFR Part 11 (when used with validated software and electronic signature workflows), EU Annex 15 (for qualification of storage conditions), and WHO Technical Report Series No. 961 (for pharmaceutical product transport). While not intrinsically safe, its low-power design and absence of wireless emissions make it suitable for use inside insulated containers, cold boxes, and GDP-compliant distribution packaging without interference concerns.
Software & Data Management
Data retrieval and configuration are managed through Lascar’s EL-USB Software v5.x—a validated desktop application supporting CSV, PDF, and XML export formats. The software enables full setup of start/stop triggers, alarm thresholds (e.g., breach of 2–8 °C or >65 %RH), and automatic report generation with embedded metadata (device ID, operator, location tag, calibration due date). Audit trails record all configuration changes, data exports, and calibration events—including user ID, timestamp, and action type—meeting ALCOA+ (Attributable, Legible, Contemporaneous, Original, Accurate) data integrity requirements. Raw binary logs are cryptographically hashed to prevent tampering; exported files retain SHA-256 checksums for long-term archival verification.
Applications
- Pharmaceutical cold chain monitoring: Continuous validation of vaccine, biologic, and sterile product shipments per ICH Q5C and USP
- Fresh produce and chilled food logistics: Real-time verification of temperature excursions during multi-leg transport per FDA Food Safety Modernization Act (FSMA) Rule 21 CFR Part 117
- Stability testing chambers: Environmental baseline logging for ICH Q1A(R2) accelerated and long-term studies
- Museum and archive climate control: Passive monitoring of RH fluctuations affecting artifact preservation
- Manufacturing cleanroom support: Supplemental environmental verification between formal HVAC system audits
FAQ
Is the EL-USB-2-LCD compliant with 21 CFR Part 11 for electronic records?
Yes—when deployed with validated EL-USB Software v5.x, configured user roles, electronic signatures, and audit trail enabled, it satisfies technical controls for electronic records and signatures.
Can the device be calibrated in-house?
No—calibration requires traceable reference standards and controlled environmental chambers; Lascar recommends annual recalibration by an ISO/IEC 17025-accredited lab using NIST-traceable equipment.
What happens if the battery depletes mid-deployment?
The device retains all logged data in non-volatile memory; no data loss occurs. A low-battery warning appears on the LCD prior to shutdown, and the final recorded value includes timestamped power-down event.
Does the USB interface support hot-plug operation during active logging?
Yes—the USB connection may be established or disconnected at any time without interrupting ongoing logging; data continues uninterrupted in internal memory.
Is humidity measurement affected by condensation or rapid temperature transitions?
The sensor is designed for non-condensing environments only. Prolonged exposure to condensation or rapid thermal shock (>5 °C/min) may temporarily affect RH response time and accuracy; allow 15–30 minutes for stabilization after extreme transitions.
