Timepower TP-305 Copper Content Analyzer
| Brand | Timepower |
|---|---|
| Origin | Beijing, China |
| Manufacturer Type | Manufacturer |
| Origin Category | Domestic |
| Model | TP-305 |
| Pricing | Upon Request |
Overview
The Timepower TP-305 Copper Content Analyzer is a dedicated benchtop photometric analyzer engineered for the quantitative determination of dissolved copper (Cu²⁺) in ultra-pure and low-conductivity water matrices. It operates on the principle of visible spectrophotometry using the established double-cyclohexanone oxalyldihydrazone (DCO) colorimetric method—a standardized reaction with high selectivity for copper ions in the presence of common interferents such as iron, zinc, and nickel. Designed specifically for power plant chemistry laboratories, the instrument meets the analytical requirements outlined in GB/T 12145–2016 (Water Quality Standards for Steam Power Plants) and ASTM D859–22 (Standard Test Method for Copper in Water by Colorimetric Method). Its optical architecture employs a stable, low-power cold LED light source centered at 590 nm—optimized for the DCO–copper complex absorbance peak—ensuring minimal thermal drift and long-term photometric repeatability.
Key Features
- 5.0-inch capacitive touch TFT-LCD display with intuitive Chinese-language UI, enabling rapid navigation without external PC dependency
- Integrated microcontroller-based platform utilizing advanced surface-mount technology (SMT) for enhanced electromagnetic compatibility and operational reliability in industrial environments
- Imported monochromatic cold LED light source with spectral bandwidth <10 nm, offering superior signal-to-noise ratio, low power consumption (<1.2 W), and service life exceeding 50,000 hours
- Automated timing sequence with audible/visual alert upon completion of color development—ensuring consistent reaction kinetics across operators and shifts
- Zero-point calibration routine that compensates for both optical zero drift and electronic baseline offset, improving measurement accuracy to ±0.5 µg/L (at 10 µg/L level)
- Circular memory buffer supporting up to 256 test records; automatic overwrite of oldest entries upon overflow, with timestamp, sample ID, and result value stored locally
Sample Compatibility & Compliance
The TP-305 is validated for use with boiler feedwater, condensate, steam condensate, generator internal cooling water, drum boiler water, and natural surface waters where copper concentrations range from 0.5 to 200 µg/L. Sample introduction requires no digestion or pre-concentration—direct analysis after filtration through a 0.45 µm membrane. The DCO reagent kit (sold separately, catalog #TP-DCO-KIT) complies with GB/T 601–2016 (Chemical Reagents – General Rules for Preparation of Standard Titration Solutions) and includes stability-certified reagents with lot-specific calibration curves. Instrument design conforms to IEC 61010-1:2010 safety standards for electrical equipment used in laboratory environments. While not 21 CFR Part 11 compliant out-of-the-box, audit trails and user access logs can be exported via USB for GLP/GMP documentation purposes.
Software & Data Management
Data handling is performed entirely onboard via embedded firmware; no proprietary desktop software is required. Measurement results—including date/time stamp, operator ID (manually entered), sample identifier, raw absorbance, and calculated Cu concentration—are stored in non-volatile flash memory. Export is supported via standard USB-A port to FAT32-formatted drives in CSV format, compatible with LIMS systems, Microsoft Excel, and statistical process control (SPC) platforms. Firmware updates are delivered via encrypted .bin files loaded from USB; version history and update timestamps are retained in system diagnostics. All calibration parameters—including blank absorbance, slope, and intercept of the working curve—are user-accessible and modifiable only with administrator-level credentials.
Applications
- Monitoring copper leaching in once-through and recirculating boiler systems to prevent stress corrosion cracking (SCC) of copper-alloy condenser tubes
- Verifying compliance with turbine manufacturer specifications for copper in generator hydrogen-cooling water (e.g., Siemens TLV 700-201, GE K-117)
- Supporting chemistry control programs aligned with EPRI TR-102358 and VGB-R 410e guidelines for fossil and nuclear steam cycles
- Field validation of online copper analyzers (e.g., Hach 5000, METTLER TOLEDO Thornton 3000i) during commissioning and periodic verification
- Research-grade copper speciation studies when coupled with controlled pH adjustment and chelation masking protocols
FAQ
What is the detection limit and linear range of the TP-305?
The instrument achieves a method detection limit (MDL) of 0.3 µg/L Cu under optimized conditions, with a linear dynamic range spanning 0.5–200 µg/L (r² ≥ 0.999 over three independent calibrations).
Does the TP-305 require daily recalibration?
No—daily blank calibration is recommended, but full multi-point calibration is required only after reagent lot change, optical module maintenance, or quarterly per QA/QC protocol.
Can the TP-305 analyze seawater or high-salinity samples?
Not directly; matrix interference from chloride and bromide exceeds acceptable limits above 500 mg/L TDS. Pre-dilution or solid-phase extraction is required for such samples.
Is the DCO reagent supplied with the instrument?
No—the TP-305 is sold as an analyzer-only unit; DCO reagent kits (100-test and 500-test formats) are ordered separately with shelf-life traceability and Certificate of Analysis.
What maintenance intervals are specified for the optical path?
The LED light source and photodiode require no scheduled replacement within 5 years of continuous operation; annual inspection of cuvette holder alignment and cleaning of optical windows with lint-free ethanol swabs is advised.
