Hengaode V1100/V1200 UV-Vis Spectrophotometer, H100 Nitrogen-Protected COD Digestion System, HA/96EP Intrinsically Safe 2-Wire Conductivity Transmitter, and HAD-30340 Digital pH Colorimeter
| Brand | Hengaode |
|---|---|
| Origin | Beijing, China |
| Model | V1100/V1200 (UV-Vis), H100 (COD digester), HA/96EP (conductivity transmitter), HAD-30340 (pH colorimeter) |
| Wavelength range (V1200) | 200–1000 nm |
| Spectral bandwidth (V1200) | 2 nm |
| Wavelength accuracy (V1200) | ±1.0 nm |
| Photometric accuracy | ±0.5%T |
| Stray light | ≤0.05%T (220 nm NaI, 340 nm NaNO₂) |
| Conductivity range (HA/96EP) | 0.01–20,000 µS/cm (with K=0.01 to K=10.0 cells) |
| Temperature compensation | 0–100.0 °C (25 °C reference) |
| Output | 4–20 mA isolated, RS485, HART |
| Enclosure rating | IP67, Ex ia IIC T6 Ga |
| COD digestion capacity | 4+1 or 8 positions |
| Nitrogen flow rate | 5–60 mL/min |
| pH colorimeter range | 5–8 |
| Optical drift | <0.002 A/20 min |
Overview
The Hengaode Multi-Instrument Laboratory Suite integrates four core analytical devices engineered for regulatory-compliant water quality, environmental, and industrial process testing: the V1100/V1200 UV-Vis spectrophotometer, H100 nitrogen-protected COD digestion system, HA/96EP intrinsically safe 2-wire conductivity transmitter, and HAD-30340 digital pH colorimeter. Each instrument adheres to internationally recognized standard methodologies—ASTM D1253, ISO 6060, USP , EPA 410.4, and HJ/T 70–2001—ensuring traceable data integrity across laboratory, field, and continuous monitoring applications. The V1100/V1200 employs double-beam optical architecture with deuterium and tungsten halogen sources, enabling high-fidelity absorbance quantification across 200–1000 nm for routine calibration of nitrate, phosphate, heavy metals, and organic contaminants. The H100 digester eliminates chloride interference in COD analysis via controlled nitrogen purging—critical for saline wastewater from petrochemical, chlor-alkali, and offshore oil production facilities. The HA/96EP transmitter meets IEC 60079-0 and GB 3836.1–2010 requirements for Zone 0 hazardous areas, delivering galvanically isolated 4–20 mA output with 25 °C temperature compensation essential for boiler feedwater and condensate monitoring. The HAD-30340 implements narrow-band cold-light photometry aligned with APHA 510B (platinum-cobalt method), providing rapid, operator-independent pH estimation without electrode calibration drift.
Key Features
- V1100/V1200 spectrophotometer: Dual-wavelength auto-scan, 128×64 LCD display, -0.3–3 A absorbance range, and <0.002 A/h baseline stability after 30-min warm-up
- H100 COD digester: Precision mass-flow-controlled nitrogen delivery (5–60 mL/min per channel), configurable 4+1 or 8-position heating blocks (ceramic or microcrystalline glass), and programmable 2-h digestion cycles with ±10-min resolution
- HA/96EP conductivity transmitter: Intrinsic safety certification (Ex ia IIC T6 Ga), automatic range switching across five cell constants (K = 0.01–30.0 cm⁻¹), and dual-compensation algorithms for both temperature and solution-specific conductivity nonlinearity
- HAD-30340 pH colorimeter: Monochromatic cold LED source (>10,000 h lifetime), integrated self-diagnostic firmware, and user-definable calibration curves compliant with GLP audit trails
- All instruments feature EMI-hardened circuitry, conformal-coated PCBs, and power conditioning compatible with 110/220 VAC ±10% input and optional 24 VDC operation
Sample Compatibility & Compliance
The suite supports heterogeneous sample matrices under strict environmental and industrial regulatory frameworks. The V1100/V1200 accommodates cuvettes (10 mm pathlength) and test tubes for turbid or particulate-laden waters per ISO 7027. The H100 digester handles 250 mL borosilicate digestion vessels per HJ/T 132–2003, enabling direct post-digestion titration without transfer loss. The HA/96EP transmitter interfaces with ASTM D5391-certified conductivity cells for ultrapure water (≤0.055 µS/cm at 25 °C) and high-salinity brines (up to 100 mS/cm). The HAD-30340 complies with ISO 10523 for colorimetric pH determination in drinking water (GB 5749–2022) and municipal wastewater (CJ/T 51–2018). All units meet CE marking requirements for electromagnetic compatibility (EN 61326-1) and electrical safety (EN 61010-1).
Software & Data Management
No proprietary software is required for standalone operation; however, all instruments support ASCII-based serial communication protocols. The HA/96EP provides HART 7.5 and Modbus RTU over RS485, enabling seamless integration into DeltaV, Emerson DeltaV, Siemens Desigo, and Honeywell Experion DCS platforms. Audit-ready data logging—including timestamped conductivity, temperature, and alarm status—is retained for ≥30 days in non-volatile memory. The V1100/V1200 stores up to 200 calibration curves and measurement sets internally, exportable via USB to CSV format for LIMS ingestion. Firmware updates follow IEC 62443-2-4 secure provisioning procedures, with cryptographic signature verification prior to installation.
Applications
- Environmental labs: COD analysis of coastal wastewater (Cl⁻ up to 20,000 mg/L), nutrient profiling (NO₃⁻, PO₄³⁻), and disinfection byproduct screening (e.g., chloroform at 254 nm)
- Power generation: Real-time monitoring of condensate purity (HA/96EP), boiler water alkalinity (HAD-30340), and corrosion inhibitor concentration (V1200 at 520 nm)
- Pharmaceutical manufacturing: USP conductivity validation of purified water and water-for-injection systems
- Oil & gas: On-site salinity assessment in produced water using K=10.0 cells, and sulfide quantification via methylene blue assay (V1200 at 670 nm)
- Educational institutions: Undergraduate spectroscopy labs utilizing V1100’s simplified interface and preloaded NIST-traceable calibration standards
FAQ
Does the HA/96EP transmitter support FDA 21 CFR Part 11 compliance?
Yes—when deployed with a validated HART host system that enforces electronic signatures, audit trails, and role-based access control, the HA/96EP satisfies Part 11 requirements for electronic records and signatures in GMP environments.
Can the H100 digester be used for total phosphorus digestion per ISO 6878?
Yes—the nitrogen-purged thermal profile (150–165 °C) and 250 mL reaction volume are fully compatible with persulfate oxidation protocols for orthophosphate release.
What is the maximum allowable ambient temperature for continuous V1200 operation?
The instrument is rated for 5–35 °C ambient per IEC 61010-1; operation above 35 °C requires active HVAC stabilization to maintain wavelength accuracy within ±1.0 nm.
Is the HAD-30340 suitable for seawater pH estimation?
No—this colorimeter is validated only for freshwater matrices (5–8 pH range); marine samples require potentiometric measurement per ISO 8781 due to ionic strength effects on dye dissociation.
How frequently must the HA/96EP’s temperature sensor be recalibrated?
Annual verification against a NIST-traceable RTD standard is recommended; the built-in PT100 sensor exhibits drift <±0.1 °C/year under continuous operation at 60 °C.
