Digi Sense Pocket Digital Thermometer Model 90003-00
| Brand | Digi Sense |
|---|---|
| Origin | USA |
| Manufacturer Type | Authorized Distributor |
| Product Origin | Imported |
| Model | 90003-00 |
| Pricing | Available Upon Request |
Overview
The Digi Sense Pocket Digital Thermometer Model 90003-00 is a compact, handheld precision instrument engineered for rapid and reliable temperature measurement across laboratory, field, and industrial process environments. Utilizing a high-stability NTC thermistor sensor embedded in a seamless 304 stainless steel probe sheath, the device delivers accurate thermal readings with minimal thermal mass and fast thermal equilibration. Its measurement principle relies on resistance–temperature correlation calibrated per NIST-traceable standards, ensuring metrological integrity for routine verification tasks. Designed for portability without compromising robustness, the unit features a fully sealed IP67-rated housing—providing protection against dust ingress and temporary submersion in liquids—making it suitable for wet-bench applications, food safety spot checks, HVAC diagnostics, and quality control sampling where hygiene and environmental resilience are critical.
Key Features
- 304 stainless steel probe shaft for corrosion resistance, mechanical durability, and compatibility with aqueous, acidic, and mildly caustic media
- Sealed, waterproof (IP67) enclosure rated for operation in humid or splash-prone environments
- Simultaneous °C/°F dual-scale display with manual toggle function for flexible unit selection
- Min/Max memory tracking to capture extreme observed values during sequential measurements
- 1-second display refresh rate for real-time thermal response visualization
- Dedicated power-on/off switch to extend battery service life; includes pre-installed alkaline battery
- Integrated protective holster with belt/pocket clip for secure transport and hands-free access
- Typical 99% step-response time of ≤30 seconds under standard calibration conditions (e.g., 25°C → 70°C in stirred water bath)
Sample Compatibility & Compliance
The Model 90003-00 is compatible with direct immersion in non-aggressive liquids, semi-solids, and ambient air. It is routinely deployed in applications requiring compliance with Good Manufacturing Practice (GMP) and Good Laboratory Practice (GLP) documentation protocols. While not certified for intrinsically safe or hazardous-area use, its design supports traceable calibration practices aligned with ISO/IEC 17025 requirements when used with accredited reference standards. The device meets RoHS Directive 2011/65/EU for restricted hazardous substances and conforms to FCC Part 15 Class B emission limits for unintentional radiators.
Software & Data Management
This thermometer operates as a standalone, non-connected instrument with no onboard data logging or PC interface. All measurements are displayed in real time and retained only in volatile Min/Max memory until power cycle. For audit-ready documentation, users are advised to pair the unit with external electronic lab notebooks (ELNs), LIMS platforms, or manual entry into validated spreadsheets. Calibration records—including date, standard used, deviation observed, and technician ID—should be maintained per FDA 21 CFR Part 11 guidelines where applicable. Optional third-party USB thermocouple adapters may enable serial output for custom integration, though such configurations fall outside factory-supported functionality.
Applications
- Routine temperature verification of incubators, refrigerators, autoclaves, and cold-chain transport units
- In-process monitoring during pharmaceutical compounding, food preparation, and chemical synthesis
- Field validation of HVAC system outputs, chiller performance, and thermal insulation efficiency
- Educational demonstrations of thermal equilibrium, heat transfer kinetics, and sensor response dynamics
- Pre-use verification of sterilization cycles and bioburden reduction parameters
- Environmental health and safety (EHS) assessments including surface temperature screening and thermal hazard identification
FAQ
What is the measurement range of the Model 90003-00?
The standard operating range is –50°C to +300°C (–58°F to +572°F), optimized for general-purpose use. Extended-range variants are available upon request.
Is the probe autoclavable?
No—the unit is not rated for repeated steam sterilization. Autoclaving will compromise sensor stability and seal integrity. For sterile applications, use disposable probe covers compliant with ASTM F1877.
How often should this thermometer be calibrated?
Calibration frequency depends on usage intensity and regulatory context; typical recommendations include daily verification against a certified reference before critical measurements, with full recalibration every 3–6 months or per internal SOP.
Can the device measure surface temperature directly?
It is designed for immersion or contact measurement; for non-contact surface readings, infrared thermometers meeting ASTM E1965 or ISO 18434-1 are recommended.
Does it support GLP-compliant audit trails?
No—this model lacks timestamped event logging or user authentication. For GLP/GMP-critical workflows, consider Digi Sense’s data-logging series (e.g., Model 91000-xx) with CSV export and 21 CFR Part 11–compatible firmware.
