ChemTron PHYSICS 100/300 High-Precision Multifunction Data Logger

Overview

The ChemTron PHYSICS 100 and PHYSICS 300 are modular, high-precision multifunction data loggers engineered for traceable, multi-sensor environmental and process parameter monitoring in regulated and research-intensive environments. Built upon a dual-platform architecture, these instruments operate on the principle of universal analog/digital signal conditioning—accepting standardized voltage (0–10 V, ±10 V), current (0–20 mA, 4–20 mA), and resistance-based inputs (Pt-100, NTC) with programmable scaling, linearization, and cold-junction compensation. The PHYSICS 100 supports one or two independent sensor channels (models 100-1 and 100-2), while the PHYSICS 300 expands capability to two, three, or four galvanically isolated input channels (models 300-2, 300-3, 300-4), enabling concurrent acquisition of temperature, humidity, pressure, airflow, pH, conductivity, redox potential, CO concentration, irradiance, and other physical or electrochemical parameters. Both platforms comply with IEC 61000-4 electromagnetic immunity standards and feature IP54-rated enclosures—ensuring reliable operation in laboratory, cleanroom, outdoor meteorological, pharmaceutical stability chamber, and industrial QC settings where long-term measurement integrity is critical.

Key Features

• Galvanically isolated input channels (1–4, depending on model) with configurable excitation, filtering, and sampling rates up to 10 Hz per channel
• 0.01°C temperature resolution with multi-point calibration support (up to 5-point Pt-100/NTC calibration curves stored in non-volatile memory)
• Integrated dual-mode power system: 12 V DC adapter (230 V AC input) + replaceable 3×AA alkaline battery backup (up to 200 hours in low-power logging mode)
• Real-time diagnostics including sensor open-circuit detection, over-range warning, battery voltage monitoring, and relay-triggered fault alerts
• Programmable min/max/average recording, zero-offset adjustment, and user-defined alarm thresholds with visual (LED) and relay output activation
• Sleep-mode optimization for extended unattended deployment—automatically reducing CPU clock and display refresh during idle intervals

Sample Compatibility & Compliance

The PHYSICS series accepts industry-standard analog sensors without proprietary transducers: Pt-100 (DIN EN 60751 Class B), NTC thermistors (e.g., 10 kΩ @ 25°C, β = 3950 K), capacitive humidity sensors (0–100% RH, ±2% RH accuracy), infrared pyrometers (1–14 µm spectral range), vane anemometers (0–30 m/s), gas flow meters (0–50 L/min), pH electrodes (±0.01 pH), conductivity cells (0.01–200 mS/cm), ORP probes (-1000 to +1000 mV), and photo-diode-based lux meters. All models ship with factory calibration certificates traceable to DKD (Deutscher Kalibrierdienst) standards and optional NIST-traceable or CNAS-accredited calibration reports. The firmware architecture supports audit-ready data integrity per FDA 21 CFR Part 11 requirements when used with encrypted SD card logging and password-protected configuration access.

Software & Data Management

Data retrieval and configuration are managed via ChemTron’s PC-based LogView Pro software (Windows 10/11 compatible), supporting USB, RS-232, Ethernet, and Bluetooth 5.0 interfaces. The software enables real-time graphing, statistical analysis (mean, SD, trendline fitting), CSV/Excel export, and automated report generation compliant with GLP/GMP documentation templates. Internal EEPROM stores up to 99 (PHYSICS 100) or 12,000 (PHYSICS 300-3/300-4) timestamped records; external microSD cards (up to 32 GB) extend capacity to ≥25,000 entries with FAT32 formatting. All logged data includes embedded metadata: channel ID, unit, timestamp (RTC with ±2 sec/month drift), sensor serial number, and operator ID field.

Applications

• Pharmaceutical stability testing (ICH Q1/Q5): continuous monitoring of temperature/humidity in climatic chambers and storage warehouses
• Environmental metrology: validation of HVAC performance, cleanroom classification (ISO 14644), and weather station node deployment
• Chemical process QA: inline verification of reactor jacket temperature, solvent dew point, and exhaust gas composition
• Academic research: multi-parameter correlation studies in soil science, building physics, and atmospheric boundary layer modeling
• Food safety compliance: HACCP-critical zone logging for cold chain validation and thermal processing verification

FAQ

What sensor types are natively supported without external signal conditioners?
Pt-100, NTC thermistors, capacitive humidity sensors, 4–20 mA loop-powered transmitters, 0–10 V analog outputs, and thermocouple signals (with optional cold-junction module).
Can the PHYSICS 300 simultaneously log six different parameters from a single sensor?
No—it acquires raw signals from up to four discrete sensors; derived parameters (e.g., dew point, enthalpy, heat index) are calculated post-acquisition in LogView Pro using user-defined formulas.
Is the internal real-time clock battery-backed?
Yes—the RTC retains time/date during main power loss for ≥72 hours via onboard capacitor, ensuring uninterrupted timestamping during brief outages.
Does the device meet ATEX or IECEx certification for hazardous areas?
No—PHYSICS units are rated IP54 for dust/moisture resistance but lack intrinsic safety certification; they must be installed outside classified zones or within explosion-proof enclosures.
How is calibration traceability documented for regulatory audits?
Each unit ships with a DKD-certified calibration certificate listing measured points, uncertainties, reference standards (e.g., Fluke 1523 with 0.005°C uncertainty), and technician accreditation—fully compliant with ISO/IEC 17025 requirements.