TimePower TP309 Benchtop Turbidimeter
| Brand | TimePower |
|---|---|
| Origin | Beijing, China |
| Manufacturer Type | OEM/ODM Manufacturer |
| Product Origin | Domestic (China) |
| Model | TP309 |
| Form Factor | Benchtop / Laboratory |
| Measurement Range | 20–200 NTU |
| Resolution | 0.1 NTU |
| Operating Ambient Temperature | 0–25 °C |
| Accuracy | ±2 % |
| Display | 5.0-inch TFT color touchscreen with Chinese UI |
| Light Source | Imported monochromatic cold LED source |
| Calibration Method | Formazin-based zero calibration (ISO 7027 compliant) |
| Data Storage | Cyclic memory for ≤256 measurement records |
| Compliance | Meets ISO 7027:2016 and GB/T 13200–2016 requirements |
| Electrical Architecture | SMT-integrated circuit design with embedded microcontroller platform |
| Power Supply | AC 220 V ±10 %, 50 Hz |
Overview
The TimePower TP309 Benchtop Turbidimeter is a precision optical instrument engineered for reliable, repeatable turbidity quantification in laboratory and process support environments. It operates on the principle of nephelometric measurement—detecting scattered light intensity at a 90° angle relative to the incident beam—as standardized in ISO 7027:2016 and aligned with GB/T 13200–2016. This method ensures high sensitivity and minimal interference from color or absorbance, making the TP309 particularly suitable for applications where low-to-moderate turbidity levels must be monitored with trace-level consistency. Designed for use in drinking water quality assurance, coagulation/flocculation optimization in municipal water treatment, effluent monitoring in wastewater plants, and purity verification in pharmaceutical and semiconductor-grade ultrapure water systems, the TP309 delivers stable performance under controlled ambient conditions (0–25 °C).
Key Features
- 5.0-inch high-contrast TFT color touchscreen interface with intuitive Chinese-language navigation—no external PC required for routine operation.
- Monochromatic cold LED light source (850 nm nominal wavelength) providing long-term spectral stability, low thermal drift, and extended service life (>10,000 hours).
- Integrated zero-point calibration using formazin standard suspension, compensating for both optical zero drift and electronic baseline offset—critical for maintaining metrological integrity across extended operational cycles.
- Surface-mount technology (SMT) printed circuit board assembly combined with unified mechanical housing, enhancing electromagnetic compatibility (EMC), thermal uniformity, and mechanical robustness.
- Embedded microcontroller architecture optimized for low power consumption and deterministic real-time response during measurement acquisition and data logging.
- Cyclic non-volatile memory storage supporting up to 256 timestamped turbidity readings; overflow management automatically overwrites oldest entries without user intervention.
Sample Compatibility & Compliance
The TP309 accepts standard 25 mm round glass cuvettes (10 mm path length) and is compatible with aqueous samples exhibiting minimal particulate settling during measurement—ideal for clarified surface water, filtered potable water, membrane permeate, and coagulated supernatants. It complies with ISO 7027:2016 for instrumental turbidity measurement methodology and satisfies national regulatory alignment per GB/T 13200–2016. While not certified for GLP/GMP audit trails or FDA 21 CFR Part 11 electronic signature compliance out-of-the-box, its deterministic firmware behavior, fixed calibration protocol, and immutable measurement algorithm support validation documentation per ISO/IEC 17025 laboratory accreditation requirements.
Software & Data Management
No proprietary software installation is required for basic operation; all functions—including calibration, measurement, and data review—are executed via the onboard GUI. Stored records include date/time stamp, NTU value, and operator ID field (user-defined text input). Data export is not supported via USB or serial interface in the base configuration; however, manual transcription or screen capture remains feasible for audit-ready reporting. Future firmware updates may introduce optional RS-232 or Modbus RTU communication protocols for integration into SCADA or LIMS environments—subject to regional regulatory review and hardware revision.
Applications
- Optimization of coagulant dosing in drinking water treatment plants via real-time turbidity feedback during rapid mix and flocculation stages.
- Verification of filter performance and breakthrough detection in granular media and membrane filtration units.
- Process control in industrial boiler feedwater preparation and cooling tower makeup monitoring.
- Effluent compliance testing against discharge permits (e.g., EPA NPDES limits) in municipal and industrial wastewater treatment facilities.
- Quality control of purified water used in pharmaceutical manufacturing (USP , EP 2.2.2) and semiconductor rinse processes.
FAQ
What turbidity standard does the TP309 use for calibration?
The instrument uses formazin suspension as the primary reference standard, consistent with ISO 7027:2016 and GB/T 13200–2016.
Is the TP309 suitable for field deployment?
No—it is designed exclusively for benchtop use in temperature-controlled laboratories (0–25 °C ambient); no IP-rated enclosure or battery operation is provided.
Can it measure below 20 NTU?
The specified lower limit is 20 NTU; measurements below this range are not validated and may exhibit reduced linearity and increased relative uncertainty.
Does it support automatic temperature compensation?
No—sample temperature must be stabilized prior to measurement, as the device lacks integrated temperature sensing or compensation algorithms.
Is NIST-traceable calibration available?
The unit ships with factory calibration verified against formazin standards traceable to national metrology institutes; end-user recalibration requires certified reference suspensions and documented SOPs.
