TimePower TP653 Coulometric Karl Fischer Moisture Analyzer
| Brand | TimePower |
|---|---|
| Origin | Beijing, China |
| Manufacturer Type | Direct Manufacturer |
| Country of Origin | China |
| Model | TP653 |
| Measurement Principle | Coulometric Karl Fischer Titration |
| Display | 5.6-inch color touchscreen LCD |
| Electrolysis Current Range | 0–400 mA (auto-controlled) |
| Detection Range | 3 µg – 100 mg H₂O |
| Resolution | 0.1 µg |
| Accuracy | ±3 µg (for 3 µg–1 mg) |
| Operating Temperature | 20–30 °C |
| Operating Humidity | ≤85% RH |
| Power Supply | AC 220 V ±10%, 50 Hz ±10% |
| Max. Power Consumption | ≤40 W |
| Dimensions | 300 × 290 × 200 mm |
| Weight | 3.7 kg |
Overview
The TimePower TP653 Coulometric Karl Fischer Moisture Analyzer is a precision laboratory instrument engineered for trace water quantification in liquid, solid, and gaseous samples using coulometric Karl Fischer titration—a primary reference method defined by ISO 12937, ASTM D6304, and USP . Unlike volumetric KF systems, the TP653 generates iodine electrochemically at the anode via controlled current, enabling high sensitivity and reproducibility for samples containing ≤100 mg of water. Its coulometric architecture eliminates reagent standardization errors and ensures stoichiometric equivalence between consumed charge and reacted water molecules (1 mole e⁻ ≡ 1/2 mole I₂ ≡ 1 mole H₂O), delivering certified accuracy down to 0.1 µg resolution. Designed for routine QC/QA workflows in regulated environments, the analyzer complies with GLP data integrity requirements through time-stamped event logging and audit-ready operation records.
Key Features
- 32-bit embedded microprocessor with real-time mini-OS for deterministic control and low-latency response
- Auto-balancing electrolytic cell with hermetic moisture barrier design—reduces equilibration time and extends electrolyte service life
- Dual-input operation interface: capacitive touchscreen + tactile physical keys for glove-compatible use in fume hoods or cleanrooms
- Real-time electrolysis curve visualization on 5.6″ color LCD—enables immediate assessment of reagent activity and endpoint stability
- Twelve pre-programmed analysis methods; six user-customizable methods stored with parameter sets (titration current, delay time, drift threshold)
- Integrated auto-fill and auto-drain functions minimize operator exposure to toxic/pyrophoric KF reagents (e.g., pyridine/methanol-based electrolytes)
- Full digital keypad for direct entry of sample mass, dilution factor, and unit conversion—eliminates post-acquisition manual calculation
- RS-232 and USB interfaces support bidirectional communication with analytical balances (Sartorius, Mettler Toledo) and LIMS/ELN platforms
Sample Compatibility & Compliance
The TP653 accommodates diverse matrices per standardized protocols: hydrocarbons (ASTM D6304), transformer oils (GB/T 7600), pharmaceutical excipients (USP ), organic solvents (SH/T 0246), agrochemical intermediates (SH/T 0255), and polymer precursors (GB/T 6283). Sample introduction options include glass syringes (0.5 µL and 50 µL), 1 mL gas-tight syringes, and optional headspace samplers for volatile or moisture-sensitive solids. All hardware and firmware conform to IEC 61010-1 safety standards. Data handling supports 21 CFR Part 11-compliant electronic signatures when integrated with validated third-party software. Reagent compatibility is verified for common coulometric electrolytes (e.g., Hydranal-Coulomat AG, Sigma-Aldrich KF Coulometric Anolyte).
Software & Data Management
Instrument firmware logs every operational event—including method execution timestamp, cumulative charge (C), water mass (µg), drift value (µg/min), and electrolyte exhaustion alerts—with non-volatile memory retention. Exportable CSV reports include raw current-time integrals, calculated water content (% w/w or ppm), and operator ID fields. Optional PC software enables method synchronization across multiple TP653 units, statistical process control (SPC) charting, and automated report generation compliant with ISO/IEC 17025 documentation requirements. Audit trails record all parameter modifications, method deletions, and calibration events with user attribution and time stamps.
Applications
- Power industry: moisture monitoring in insulating oils per IEC 60814 and GB/T 7600 to prevent dielectric breakdown
- Petrochemical QA: quantification of residual water in benzene, toluene, MTBE, and biodiesel feedstocks per ASTM D6304 Class I
- Pharmaceutical manufacturing: release testing of active pharmaceutical ingredients (APIs) and lyophilized products under USP and EP 2.5.12
- Food & flavor chemistry: water activity validation in essential oils, emulsifiers, and hygroscopic extracts
- Electronics materials: verification of moisture content in photoresists and encapsulation resins prior to wafer processing
FAQ
What is the minimum detectable water mass?
The TP653 achieves a lower detection limit of 3 µg H₂O with ±3 µg absolute accuracy, suitable for ultra-dry solvents and high-purity monomers.
How often must the electrolyte be replaced?
Replacement frequency depends on cumulative water load and drift performance; the system triggers an alert when accumulated charge approaches 95% of the electrolyte’s rated capacity (typically 1–3 g H₂O per 100 mL reagent).
Is ventilation required during operation?
Yes—KF reagents contain pyridine and methanol; all sample injections and electrolyte handling must occur inside a certified fume hood per OSHA 1910.1200 guidelines.
Can the TP653 be integrated into an automated production line?
Via RS-232 or Modbus RTU, the analyzer supports remote start/stop commands and real-time data streaming to SCADA systems for inline moisture surveillance.
Does the instrument support multi-point calibration verification?
While coulometric KF does not require external calibration standards, the TP653 includes built-in charge-integration verification using certified water standards (e.g., 1.00 mg H₂O ampoules) per ISO 12937 Annex B.
