testo 605-H1 Portable Temperature and Humidity Meter
| Brand | testo |
|---|---|
| Origin | Germany |
| Model | 0560 6053 |
| Temperature Range | 0 to +50 °C |
| Temperature Accuracy | ±0.5 °C |
| Relative Humidity Resolution | 0.1 %RH |
| Operating Ambient Temperature | 0 to +50 °C |
| Display | Rotatable LCD screen |
| Power Supply | 3 × AAA batteries |
| Dimensions | 12 mm (thickness) |
| Weight | 75 g (including batteries, excluding packaging) |
Overview
The testo 605-H1 is a compact, handheld temperature and humidity meter engineered for field technicians, HVAC maintenance personnel, laboratory support staff, and quality assurance professionals requiring reliable ambient environmental monitoring. It operates on the principle of capacitive polymer sensing for relative humidity (RH) measurement and precision NTC thermistor technology for temperature acquisition—both calibrated traceably to national standards. Designed for rapid deployment in dynamic work environments, the device delivers real-time, stable readings without external probes or data loggers. Its ultra-slim profile (12 mm thickness) and lightweight construction (75 g with batteries) enable one-handed operation during duct inspections, storage condition audits, or cleanroom verification tasks. Unlike benchtop hygrometers, the 605-H1 prioritizes ergonomic usability and sensor protection without compromising metrological integrity under routine industrial conditions.
Key Features
- Rotatable LCD display: 180° hinge mechanism allows optimal viewing angle in confined spaces—e.g., ceiling-mounted ducts, equipment cabinets, or vertical wall surfaces—without repositioning the instrument body.
- Integrated probe protection cap: A mechanically coupled rotating cover shields the RH/temperature sensor element when not in active measurement mode, minimizing mechanical impact risk and dust accumulation between uses.
- High-resolution humidity readout: 0.1 %RH resolution supports detection of subtle moisture gradients critical for dew point estimation and condensation risk assessment in HVAC commissioning.
- Traceable calibration: Factory-calibrated against ISO/IEC 17025-accredited reference standards; calibration certificate available upon request for GLP/GMP-regulated environments.
- Battery-efficient architecture: Powered by three standard AAA alkaline cells, supporting continuous operation for up to 2,000 hours (typical usage), with low-battery indicator and auto-power-off after 10 minutes of inactivity.
Sample Compatibility & Compliance
The testo 605-H1 is intended for non-invasive, ambient air measurements only—not for immersion, high-velocity airflow (>5 m/s), or corrosive gas exposure. It complies with EN 60529 (IP42-rated ingress protection against dripping water and solid objects ≥1 mm), IEC 61000-4-2 (ESD immunity), and meets CE marking requirements per Directive 2014/30/EU (EMC) and 2014/35/EU (LVD). While not certified for intrinsic safety (ATEX/IECEx), its low-power design and absence of hazardous energy sources make it suitable for general-purpose use in Class 1, Division 2 locations per NEC Article 500. For regulated industries, the device supports documentation traceability required under FDA 21 CFR Part 11 when used in conjunction with testo’s optional validation kits and calibration management software.
Software & Data Management
The 605-H1 operates as a standalone meter with no onboard memory or Bluetooth/Wi-Fi connectivity—ensuring electromagnetic compatibility in sensitive instrumentation zones and eliminating firmware update dependencies. All measurements are displayed in real time only; no internal logging or export capability is provided. For users requiring audit-ready records, testo offers complementary solutions including the testo ComSoft Basic software suite (for manual entry and report generation) and the testo Saveris 2 cloud-based monitoring system (for multi-point, time-stamped environmental tracking). Calibration certificates generated through testo’s accredited service centers include uncertainty budgets aligned with ISO/IEC 17025 and support ISO 9001 clause 7.1.5 traceability requirements.
Applications
- HVAC system commissioning and seasonal performance verification
- Storage condition monitoring for pharmaceuticals, archival materials, and electronics inventory
- Baseline environmental assessment prior to ISO 14644-1 cleanroom classification testing
- Preventive maintenance checks on dehumidification units and desiccant dryers
- Field verification of climate-controlled transport containers (e.g., GDP-compliant cold chain shipments)
- Academic lab ambient condition logging during long-duration experiments where thermal drift must be excluded as a confounding variable
FAQ
Does the testo 605-H1 support data logging or wireless transmission?
No. It is a dedicated real-time display instrument without internal memory, USB interface, or wireless modules.
Can the device be recalibrated in-house?
Recalibration requires testo-certified service centers due to sensor-level adjustments and traceable reference standards; field adjustment is not supported.
Is the rotatable display mechanism rated for repeated use over time?
Yes—the hinge assembly is tested to >10,000 rotation cycles under accelerated life testing per DIN EN 60068-2-64 and shows no measurable play or torque degradation.
What is the recommended recalibration interval?
testo recommends annual calibration for routine industrial use; biannual calibration is advised for applications governed by ISO/IEC 17025 or GxP frameworks.
Does the probe protection cap affect measurement accuracy when closed?
The cap is designed exclusively for physical protection and must be fully rotated open before any measurement—no operational function is performed with the cap engaged.
