HengaoDe HAD-U20 Portable UV Radiometer | SKZ-TS-I Precision Electrospray Nebulizer for TLC | HAD-L265C ASTM D445-Compliant Kinematic Viscosity Tester | HAD-Y508C Frequency-Selective Pipeline Insulation Resistance Tester | HAD-L91-1 Compact Single-Channel Temperature Data Logger
| Brand | HengaoDe |
|---|---|
| Origin | Beijing, China |
| Manufacturer Type | Authorized Distributor |
| Product Origin | Domestic (China) |
| Model | HAD-U20 / SKZ-TS-I / HAD-L265C / HAD-Y508C / HAD-L91-1 |
| Price | USD 28.50 (FOB Beijing, ex-factory) |
Overview
This integrated instrumentation suite comprises five independently certified laboratory and field-deployable devices engineered for precision measurement across photometric, chromatographic, rheological, electrical integrity, and thermal monitoring domains. The HAD-U20 employs a linear S-series UV photodiode detector with optical bandpass filtering to isolate target ultraviolet spectral bands (UVA: 315–400 nm; UVB: 280–315 nm; UVC: 100–280 nm; 254 nm & 365 nm narrowband), minimizing visible-light interference per IEC 62471 photobiological safety assessment requirements. The SKZ-TS-I electrospray nebulizer utilizes a 0.2 mm stainless-steel nozzle and imported low-noise air compressor (max. 100 PSI, regulated output 10–30 PSI) to deliver uniform, low-turbulence aerosol deposition on thin-layer chromatography (TLC) plates—critical for reproducible derivatization and visualization under GLP-compliant analytical workflows. The HAD-L265C kinematic viscosity tester conforms to SY/T 5651 and implements GB/T 265 methodology via dual-wall glass bath (Φ300 × 330 mm), PID-controlled heating (±0.1 °C stability from ambient to 100 °C), and automated timing/calculation for Newtonian liquid petroleum products. The HAD-Y508C insulation resistance tester applies frequency-selective signal injection (300 Hz – 1 MHz, 1 Hz resolution) using direct digital synthesis (DDS) lock-in technology to isolate pipeline coating defects over distances up to 20 km, fully compliant with SY/T 5918-2017 for oil & gas infrastructure integrity verification. The HAD-L91-1 temperature logger integrates an NTC thermistor (–40 to +70 °C, ±0.5 °C accuracy, 0.1 °C resolution) in a credit-card-sized housing with 32,000-point memory, USB interface, and configurable logging intervals (2 s – 24 h), meeting FDA 21 CFR Part 11 data integrity expectations for cold-chain validation.
Key Features
- HAD-U20: Four-digit backlit LCD with data hold, 30-value internal storage, USB interface, and selectable SUVA/SUVB/SUVC/254 nm/365 nm probes—calibrated traceable to NIM (National Institute of Metrology, China)
- SKZ-TS-I: Stainless-steel spray pen with ergonomic grip; 50 mL reagent reservoir; precise pressure regulation enabling controlled mist density; cleaning protocol integrated into operational sequence
- HAD-L265C: Four-capillary test ports; 2000 W immersion heater; 15 W magnetic stirrer (1200 rpm); real-time viscosity calculation engine eliminating manual interpolation
- HAD-Y508C: Dual-unit architecture (transmitter + receiver); auto-calibrating receiver with error compensation; 12 V/10 Ah rechargeable battery; sunlight-readable 3.5″ color TFT display with Chinese GUI
- HAD-L91-1: Internal sensor housed in thermally isolated chamber; timestamped logging with UTC synchronization; start/stop modes include immediate, scheduled, and manual trigger
Sample Compatibility & Compliance
The HAD-U20 supports quantitative UV irradiance assessment of germicidal lamps (UVC), phototherapy arrays (UVB), and UV-curing systems (365 nm), adhering to ISO 15858 for UVC dosimetry. The SKZ-TS-I accommodates common TLC visualization reagents—including ninhydrin, iodine vapor, phosphomolybdic acid, and anisaldehyde—without clogging, validated per USP chromatographic system suitability criteria. The HAD-L265C is restricted to Newtonian liquids per ASTM D445 scope; non-Newtonian samples require shear-rate-controlled viscometry. The HAD-Y508C satisfies SY/T 5918-2017 requirements for cathodic protection system evaluation on buried pipelines, including resistivity threshold reporting and fault localization algorithms. The HAD-L91-1 meets EN 12830 for temperature monitoring in pharmaceutical logistics and complies with WHO Technical Report Series No. 961 Annex 9 for vaccine cold chain documentation.
Software & Data Management
All units support direct data export without proprietary software dependency. The HAD-U20 and HAD-L91-1 mount as USB mass-storage devices for CSV file retrieval. The HAD-Y508C stores full measurement logs—including frequency, amplitude, distance, and calculated resistance—with audit trail metadata (operator ID, timestamp, GPS coordinates if external module attached). The HAD-L265C embeds calculation firmware compliant with ISO/IEC 17025 clause 7.7.2 for result traceability. No cloud connectivity or remote access is implemented—data sovereignty remains with the user per GDPR and HIPAA-aligned institutional policies.
Applications
- UV disinfection validation in hospital HVAC ducts and water treatment facilities
- TLC plate development for QC release testing of APIs and herbal extracts
- Kinematic viscosity grading of diesel fuel, lubricating oils, and biodiesel blends per ISO 3104
- Corrosion-under-insulation (CUI) screening of offshore platform piping networks
- Real-time thermal profiling during lyophilization cycle development and warehouse mapping
FAQ
Are calibration certificates included with shipment?
Yes—NIST-traceable calibration reports (UV irradiance, temperature, viscosity reference oil) are provided for each unit upon request at no additional cost.
Can the HAD-Y508C operate in sub-zero ambient conditions?
The transmitter and receiver function between –30 °C and +40 °C; battery performance below –10 °C requires pre-warming prior to deployment.
Is the HAD-L265C compatible with ASTM D445 standard capillary viscometers?
Yes—it accepts standard Ubbelohde and Cannon-Fenske capillaries (size range 0.4–1.2 mm) and automatically applies correction factors per ASTM D445 Annex A1.
Does the HAD-L91-1 support password-protected configuration changes?
No—physical USB connection and button-based menu navigation ensure tamper-evident operation suitable for 21 CFR Part 11 environments when paired with procedural controls.
What maintenance is required for the SKZ-TS-I spray nozzle?
Rinse with methanol or acetone after each use; ultrasonic cleaning recommended weekly; nozzle replacement interval is 6 months under continuous lab use.
