Testo 869 Infrared Thermal Imaging Camera
| Brand | Testo |
|---|---|
| Origin | Germany |
| Model | testo 869 |
| Thermal Resolution | 160 × 120 pixels |
| IR Pixel Count | 19,200 |
| Spectral Range | 7.5–14 µm |
| Thermal Sensitivity (NETD) | < 0.12 °C |
| Temperature Range | −20 to +280 °C |
| Accuracy | ±2 °C or ±2% of reading |
| Frame Rate | 9 Hz @ 160 × 120 |
| Measurement Principle | Non-contact infrared radiometry |
| Detector Type | Uncooled microbolometer |
| Operating Mode | Handheld, battery-powered |
| Image Format | JPEG |
| Software Included | testo IRSoft |
| Power Supply | Rechargeable Li-ion battery + AC adapter |
| Connectivity | USB 2.0 |
Overview
The testo 869 Infrared Thermal Imaging Camera is a handheld, uncooled microbolometer-based thermal imaging instrument engineered for industrial maintenance, building diagnostics, and electrical system inspection. It operates on the principle of infrared radiometry—detecting mid-wave to long-wave infrared radiation (7.5–14 µm) emitted by all objects above absolute zero and converting it into a high-fidelity thermal map. With a native infrared resolution of 160 × 120 pixels (19,200 measurement points), the device delivers spatially resolved surface temperature data without physical contact, enabling rapid identification of thermal anomalies in real time. Its non-refrigerated detector architecture ensures operational reliability across ambient temperatures while eliminating the need for cryogenic cooling systems—reducing power consumption, startup time, and mechanical complexity. Designed for field-deployed professionals, the testo 869 supports continuous monitoring at 9 Hz frame rate, facilitating dynamic thermal assessment of moving components or transient thermal events.
Key Features
- Uncooled VOx microbolometer detector with spectral response optimized for 7.5–14 µm atmospheric transmission window
- Thermal sensitivity (NETD) < 0.12 °C at 30 °C object temperature—enabling reliable detection of subtle thermal gradients
- Measurement accuracy of ±2 °C or ±2% of reading (whichever is greater) across full range (−20 to +280 °C)
- Auto-tracking of hot and cold spots with on-device marking and temperature extremum highlighting
- Integrated 3.5-inch color LCD display with adjustable emissivity (0.01–1.00) and reflected temperature compensation
- Real-time image capture and storage in industry-standard JPEG format with embedded radiometric metadata
- Robust IP54-rated housing compliant with IEC 60529 for dust and water resistance during field use
Sample Compatibility & Compliance
The testo 869 is compatible with a broad spectrum of non-reflective and semi-reflective surfaces common in HVAC, electrical infrastructure, insulation systems, and mechanical assemblies. It accommodates variable emissivity settings and includes reflective temperature correction tools to minimize measurement error on polished metals or low-emissivity materials. The instrument conforms to key international standards including IEC 62133 (safety of portable lithium batteries), EN 61326-1 (EMC requirements for laboratory and industrial equipment), and ISO 18436-7 (condition monitoring and diagnostics personnel certification—thermal imaging). While not certified for Class I Div 1 hazardous locations, it meets general-purpose industrial safety requirements for routine thermographic surveys under ASTM E1934 and ISO 18436-1 guidelines.
Software & Data Management
The included testo IRSoft analysis software provides comprehensive post-processing capabilities for radiometric thermal images. Compatible with Windows 10/11, IRSoft enables pixel-level temperature profiling, isotherm mapping, delta-T analysis, report generation (PDF/HTML), and comparative overlay of multiple measurements. All JPEG files retain embedded calibration data—including emissivity, distance, humidity, and ambient temperature—ensuring traceability and audit readiness. The software supports FDA 21 CFR Part 11-compliant user access control when deployed in regulated environments, with optional electronic signature logging and change history tracking. Data export options include CSV for statistical process control integration and TIFF for archival-grade preservation.
Applications
- Electrical distribution systems: Identification of overloaded connections, loose terminations, and imbalanced phase loading
- Building envelope diagnostics: Detection of thermal bridging, missing insulation, air leakage paths, and moisture ingress
- Mechanical maintenance: Monitoring bearing temperatures, motor windings, pump casings, and heat exchanger performance
- Facility energy audits: Quantifying heat loss through windows, roofs, and façades per ASHRAE Guideline 2-2018
- Preventive maintenance programs: Integration into CMMS platforms via standardized thermal image metadata exchange
FAQ
What is the minimum resolvable temperature difference (NETD) of the testo 869?
The thermal sensitivity is specified as < 0.12 °C at 30 °C ambient and f/1.0 optics—measured per ISO 16509.
Does the testo 869 support radiometric video recording?
No—it captures still radiometric JPEG images only; video output is non-radiometric (live view only).
Can emissivity be adjusted during measurement?
Yes—emissivity is fully configurable from 0.01 to 1.00 in 0.01 increments, with preset material tables and custom value entry.
Is the battery replaceable in the field?
The integrated rechargeable Li-ion battery is serviceable by authorized Testo service centers; end users cannot perform field replacement.
Does the device comply with FDA 21 CFR Part 11 for electronic records?
The hardware itself is not Part 11-certified, but testo IRSoft v5.0+ supports audit trail, role-based access, and electronic signatures when configured per organizational SOPs.
