Timepower TP-340 Acid-Base Concentration Meter
| Brand | Timepower |
|---|---|
| Origin | Beijing, China |
| Manufacturer Type | Manufacturer |
| Product Category | Domestic |
| Model | TP-340 |
| Pricing | Upon Request |
Overview
The Timepower TP-340 Acid-Base Concentration Meter is a dedicated electrochemical analyzer engineered for continuous or intermittent measurement of hydrogen ion activity (pH) and derived acid/base concentration in aqueous process streams. It operates on the principle of potentiometric measurement using a high-stability glass pH electrode paired with a reference electrode—typically Ag/AgCl in double-junction configuration—to minimize liquid junction potential drift and contamination risk. Unlike general-purpose pH meters, the TP-340 integrates concentration calculation algorithms compliant with standard dissociation constants (e.g., for HCl, H₂SO₄, NaOH, KOH) across defined temperature and ionic strength ranges, enabling direct readout of molar or weight-percent concentration values without manual calibration curve interpolation. Designed for integration into industrial control environments, it supports both laboratory verification and permanent online installation in piping manifolds or bypass cells.
Key Features
- Corrosion-resistant electrode assembly with chemically inert PTFE or Ryton® body materials, rated for continuous exposure to ≤10% H₂SO₄, ≤15% HCl, and ≤8% NaOH at temperatures up to 60 °C
- Wide operational concentration range: 0.1–10 wt% for strong monoprotic acids/bases; extended capability to 20 wt% with optional high-range sensor configuration
- High-precision signal conditioning architecture featuring 24-bit analog-to-digital conversion and real-time temperature compensation (PT1000 input supported)
- Embedded microcontroller platform with non-volatile FRAM memory ensuring ≥10 years of data retention during power loss
- 5.0-inch capacitive touchscreen LCD with intuitive Chinese-language menu navigation, configurable display units (mol/L, wt%, g/L), and dual-channel output options (4–20 mA isolated analog + Modbus RTU over RS-485)
- Integrated data logging with circular buffer storage (≥10,000 timestamped records), automatic overwrite policy, and USB export capability for audit-ready traceability
Sample Compatibility & Compliance
The TP-340 is validated for use with clean to moderately suspended aqueous solutions typical of boiler feedwater treatment, pickling line rinse tanks, caustic scrubber effluents, pharmaceutical cleaning-in-place (CIP) validation streams, and food-grade acidulant dosing systems. It complies with IEC 61000-6-2 (immunity) and IEC 61000-6-4 (emissions) for industrial electromagnetic environments. While not certified to intrinsic safety standards (e.g., ATEX/IECEx), its enclosure meets IP65 rating for dust and low-pressure water ingress protection. For regulated industries, the device supports GLP-compliant operation through user-accessible audit trail settings, password-protected parameter modification, and timestamped calibration log export—aligning with FDA 21 CFR Part 11 requirements when deployed with validated software interfaces.
Software & Data Management
The TP-340 operates autonomously without external PC dependency but includes optional Windows-based configuration and data analysis software (TP-Link Suite v3.x). This application enables remote firmware updates, multi-point calibration certificate generation (including uncertainty estimation per ISO/IEC 17025 guidelines), and export of time-series datasets in CSV or Excel-compatible formats. All stored measurements include metadata: date/time stamp, temperature reading, electrode impedance status, and operator ID (if enabled). Data integrity is preserved via cyclic redundancy check (CRC-16) on all internal memory writes and automatic checksum validation during USB transfer.
Applications
- Power generation: Real-time monitoring of condensate polishing resin regeneration acid/base dosage and blowdown concentration control
- Chemical manufacturing: In-line titration endpoint verification during neutralization reactions and catalyst recovery loops
- Metallurgical processing: Concentration tracking in zinc electrowinning electrolyte circulation and aluminum anodizing bath maintenance
- Pharmaceutical production: Verification of sodium hydroxide concentration in equipment sanitization cycles per USP Water for Injection specifications
- Food & beverage: Validation of citric or phosphoric acid concentration in carbonated beverage formulation tanks
FAQ
What types of acids and bases can the TP-340 measure directly?
It provides factory-calibrated concentration outputs for hydrochloric acid (HCl), sulfuric acid (H₂SO₄), nitric acid (HNO₃), sodium hydroxide (NaOH), and potassium hydroxide (KOH). Custom calibration curves may be loaded for other analytes via the configuration software.
Is temperature compensation automatic?
Yes—integrated PT1000 sensor input enables real-time Nernst equation correction across 5–60 °C; manual offset entry is also supported for non-standard thermal profiles.
Can the TP-340 be used in hazardous areas?
No—the unit is not intrinsically safe or explosion-proof rated. It requires installation in non-classified zones or within purged enclosures per local electrical codes.
How often does the electrode require recalibration?
Under stable process conditions, biweekly two-point calibration (using certified buffer solutions at pH 4.01 and 7.00 or 10.01) is recommended; frequency increases with aggressive media or thermal cycling.
Does the device support digital communication protocols beyond Modbus?
Standard firmware implements Modbus RTU only; optional OEM firmware variants may include Profibus DP or HART 7 upon special order and system-level validation.
