TCT Handset Smoke Portable Opacity Meter
| Brand | TCT |
|---|---|
| Origin | Fujian, China |
| Manufacturer Type | Authorized Distributor |
| Country of Origin | China |
| Model | Handset Smoke |
| Instrument Type | Portable |
| Measurement Principle | Light Extinction (Opacity) Method |
| Max. Permissible Error | ±2% |
| Zero Drift | ±1% |
| Span Drift | ±1% |
| Repeatability | ≤0.01 |
| Optical Path Length | 215 mm ± 0.05 cm |
| N-value Range | 0–100 % (Resolution: 0.01%) |
| K-value Range | 0–16.00 m⁻¹ (Resolution: 0.01 m⁻¹) |
| Engine RPM (Optional) | 400–9,999 rpm (Resolution: 10 rpm) |
| Oil Temperature (Optional) | −13 to +150 °C (Resolution: 1 °C) |
| Warm-up Time | 3–6 min (ambient-dependent) |
| Operating Temp. | +5 to +40 °C |
| Humidity Range | 30–90 % RH |
| Storage Temp. | −32 to +55 °C |
| Sample Gas Temp. | 0–256 °C |
| Physical Response Time (T₁₀%–T₉₀%) | <0.2 s @ 75 L/min |
| Electrical Response Time | 0.9 s |
| Power Supply | 230 V / 0.9 A, 50–60 Hz |
| Max. Power Consumption | 65 W |
| Net Weight | <5 kg |
| Compliance | GB 3847–2018, GB 36886–2018, ISO 11614, EU Directive 2014/45/EU |
Overview
The TCT Handset Smoke Portable Opacity Meter is an engineered field-deployable instrument designed for regulatory-grade measurement of diesel exhaust opacity (N) and extinction coefficient (K) in accordance with internationally recognized metrological and environmental standards. It operates on the principle of light extinction—measuring the attenuation of a collimated infrared or visible light beam as it passes through a defined optical path (215 mm) traversing the exhaust plume. This method is standardized under ISO 11614 for continuous opacity monitoring and aligned with the test protocols specified in GB 3847–2018 (China’s “Limits and Measurement Methods for Exhaust Smoke Emissions from Compression Ignition Engines and Vehicles”) and GB 36886–2018 (“Emission Limits and Test Methods for Exhaust Smoke from Non-Road Diesel Mobile Machinery”). The device integrates real-time photometric detection with automatic zero/span calibration routines, thermal stabilization, and active airflow management to ensure measurement integrity across variable ambient and exhaust conditions.
Key Features
- Compact, handheld form factor (<5 kg) optimized for roadside enforcement, mobile inspection units, and remote field deployment.
- 215 mm precision-machined optical path chamber with ±0.05 cm dimensional tolerance—engineered to minimize scattering artifacts and support traceable K-value derivation per ISO 11614 Annex B.
- Integrated thermal and fan control systems maintain stable detector temperature and purge flow dynamics, reducing drift during sequential measurements.
- Onboard 240 Wh rechargeable lithium battery enables >4 hours of continuous operation without external power—validated under ISO 5801 airflow conditions at 75 L/min.
- Wireless connectivity suite: dual-band Wi-Fi (2.4/5 GHz) for instrument-to-PC/cloud synchronization; Bluetooth 5.0 for optional OBD-II interface (RPM, oil temperature, DTC retrieval).
- Optional AI-powered optical character recognition (OCR) module for rapid license plate and vehicle registration document capture—compatible with Chinese domestic vehicle ID formats and metadata tagging.
- GPS/BeiDou dual-mode geolocation logging (optional), time-stamped and embedded in exported data packets for audit-ready reporting.
- Thermal direct-printing via Bluetooth-enabled mini-printer—generates calibrated, timestamped hardcopy reports compliant with GLP documentation requirements.
Sample Compatibility & Compliance
The Handset Smoke is validated for use with transient and steady-state diesel exhaust streams from on-road vehicles (light- and heavy-duty), non-road mobile machinery (e.g., construction equipment, agricultural tractors), and marine auxiliary engines. It accommodates exhaust gas temperatures up to 256 °C and maintains photometric accuracy across humidity levels from 30–90 % RH and ambient operating temperatures of +5 to +40 °C. All optical and electronic subsystems are certified to meet electromagnetic compatibility (EMC) Class B per EN 61326-1 and safety compliance under IEC 61010-1. Its measurement uncertainty profile—including ±2 % max permissible error, ±1 % zero and span drift, and ≤0.01 repeatability—is verified per ISO/IEC 17025-accredited procedures and documented in the factory calibration certificate shipped with each unit.
Software & Data Management
The instrument interfaces with TCT SmokeLink Desktop Suite (v3.2+), a Windows-based application supporting automated firmware updates, multi-instrument fleet configuration, and batch report generation. Raw opacity waveforms, K-value time series, GPS coordinates, and OBD parameters (if enabled) are stored in encrypted SQLite databases with SHA-256 hashing. Data export options include CSV (ISO 8601 timestamps), PDF (with digital signature fields), and XML compliant with China’s Ministry of Ecology and Environment (MEE) data exchange schema. Remote 4G LTE upload supports TLS 1.2–encrypted transmission to centralized environmental monitoring platforms, with configurable retry logic and offline buffer retention. Audit trails record all user actions—including calibration events, parameter changes, and data exports—with immutable timestamps and operator ID binding, satisfying requirements for GLP/GMP-aligned field testing environments.
Applications
- Regulatory roadside emissions screening by environmental protection bureaus and traffic law enforcement agencies.
- In-service conformity testing for heavy-duty diesel fleets under China’s national emission recall and supervision framework.
- Field validation of aftertreatment system performance (e.g., DPF regeneration efficiency, SCR urea dosing accuracy) during durability trials.
- Third-party certification testing for non-road diesel machinery prior to type approval under GB 20891.
- Mobile laboratory integration for urban air quality studies correlating real-world driving emissions with meteorological and traffic data.
FAQ
Does the Handset Smoke comply with EU type-approval requirements for roadside inspection?
Yes—it meets the technical specifications outlined in EU Directive 2014/45/EU Annex IV, Section 5.2.2 for portable opacity meters used in periodic technical inspections.
Can the device perform free-acceleration smoke tests per GB 3847–2018 without external triggers?
Yes—the internal acceleration profile generator synchronizes sampling with engine speed ramping, eliminating need for manual trigger cables or pedal sensors.
Is firmware update capability available over-the-air via 4G?
Firmware updates require local USB connection or Wi-Fi download; 4G is reserved for measurement data upload only, ensuring separation of control and telemetry channels.
What is the recalibration interval recommended for field use?
Annual recalibration is advised; however, daily zero-check using integrated reference filter and quarterly span verification with NIST-traceable neutral density standards are required for GLP-compliant operations.
Are OEM-specific OBD protocols supported beyond generic SAE J1939 and ISO 15031?
Custom protocol stacks (e.g., Weichai, Yuchai, Cummins China ECUs) can be deployed via firmware patch upon submission of ECU diagnostic specification documents.
Related Products
