Timepower TP110 Online pH Analyzer
| Brand | Timepower |
|---|---|
| Model | TP110 |
| Origin | Beijing, China |
| Manufacturer Type | Direct Manufacturer |
| Country of Origin | China |
| Output Signal Options | (0–10) mA, (0–20) mA, (4–20) mA (load < 300 Ω) |
| Relay Outputs | 2 SPST (AC 220 V / 3 A or DC 30 V / 3 A), user-configurable |
| Display | 128 × 64 dot-matrix LCD with Chinese interface |
| Measurement Range | 0.00–14.00 pH |
| Accuracy | ±0.02 pH |
| Resolution | 0.01 pH |
| Repeatability | < 1% |
| Temperature Compensation | Pt1000 sensor, 0–60 °C |
| Sample Temp. | 5–60 °C |
| Max. Sample Pressure | < 0.6 MPa |
| Ambient Temp. | 5–45 °C |
| Humidity | ≤90% RH (non-condensing) |
| Storage Temp. | −25–55 °C |
| Enclosure Rating | IP65 |
| Power Supply | AC 85–265 V, 45–65 Hz |
| Power Consumption | ≤15 W |
| Dimensions (W×H×D) | 145 × 120 × 150 mm |
| Panel Cutout | 138 × 138 mm |
| Weight | 0.64 kg |
| Data Storage | Cyclic memory with >10-year data retention after power loss |
| A/D Converter | 24-bit |
Overview
The Timepower TP110 Online pH Analyzer is a microprocessor-based industrial process instrument engineered for continuous, high-stability measurement of hydrogen ion activity in aqueous solutions. It operates on the potentiometric principle—utilizing a galvanic cell composed of a pH-sensitive indicator electrode and a stable reference electrode immersed in the sample stream. The resulting electromotive force (EMF), governed by the Nernst equation, is converted into a calibrated pH value with traceable accuracy. Designed for unattended operation in demanding environments, the TP110 integrates signal conditioning, temperature compensation, digital processing, and configurable analog/digital outputs within a single compact enclosure. Its architecture meets the functional safety and environmental robustness requirements typical of continuous monitoring in regulated industrial water systems—including boiler feedwater, reverse osmosis permeate, cooling tower circuits, wastewater effluent streams, and pharmaceutical purified water (PW) loops.
Key Features
- 24-bit high-resolution analog-to-digital conversion ensures stable digitization of low-level mV signals from pH electrodes, minimizing quantization error and supporting long-term baseline stability.
- Integrated Pt1000 temperature sensor enables automatic temperature compensation across 0–60 °C, conforming to ISO 7027 and ASTM D1293 methodologies for compensated pH reporting.
- Triple-junction composite pH electrode interface supports interchangeable probe configurations—including low-conductivity pure water, high-ionic-strength wastewater, flat-surface mounting, and autoclavable variants—ensuring optimal junction potential control and reduced liquid junction drift.
- Industrial-grade enclosure rated IP65 provides protection against dust ingress and water jets, suitable for wall-mounted or panel-integrated deployment in non-hazardous areas per IEC 60529.
- Configurable current output (4–20 mA standard, with optional 0–10/0–20 mA) features galvanic isolation (>1500 VDC) to eliminate ground-loop interference in distributed control system (DCS) integrations.
- Two programmable relay outputs support fail-safe alarm logic (e.g., out-of-range pH, sensor fault, temperature deviation) with configurable hysteresis and latching behavior per IEC 61508 SIL-1 functional safety guidelines.
- Non-volatile memory retains calibration coefficients, historical readings, and configuration parameters for ≥10 years without battery backup—meeting GLP audit trail requirements for data integrity.
Sample Compatibility & Compliance
The TP110 is validated for use with process streams exhibiting conductivity ≥20 µS/cm (standard electrode), down to 0.1 µS/cm (with specialized low-conductivity electrode). It accommodates sample pressures up to 0.6 MPa and temperatures between 5 °C and 60 °C—compatible with pressurized recirculation loops and open-channel applications. Electrode mounting options include flow-through cells (for inline pipe integration), submersible housings (for tank or sump immersion), flanged assemblies (for ANSI/DIN piping systems), and custom-engineered brackets for OEM integration. The analyzer complies with electromagnetic compatibility standards IEC 61326-1 (industrial environment) and electrical safety standard IEC 61010-1. While not certified for intrinsic safety (ATEX/IECEx), it may be deployed in Zone 2/Class I Division 2 areas when installed per NEC Article 500 guidelines.
Software & Data Management
The TP110 employs embedded firmware with dual-mode operation: standalone field calibration (via front-panel menu navigation) and remote configuration via Modbus RTU over RS-485 (optional). All calibration events—including date/time stamp, buffer values used, slope/mV offset, and temperature—are stored in immutable log entries. Data logging supports cyclic storage of up to 30 days of 1-minute interval pH and temperature records. Export is facilitated via USB-C port (firmware update and log dump) or optional Ethernet/WiFi module enabling HTTP API access for SCADA integration. Audit trails comply with FDA 21 CFR Part 11 requirements when paired with time-synchronized NTP servers and role-based access control (admin/operator modes). Calibration certificates are exportable in CSV or PDF format for quality documentation.
Applications
- Power generation: Monitoring pH of condensate polishing units, demineralizer effluent, and steam cycle makeup water per ASME PTC 19.11 and EPRI guidelines.
- Pharmaceutical manufacturing: Continuous verification of purified water (PW) and water-for-injection (WFI) distribution loop pH per USP and EU GMP Annex 1.
- Food & beverage processing: Real-time control of rinse water, CIP solution acidity, and fermentation broth pH in compliance with HACCP critical control points.
- Municipal and industrial wastewater treatment: Feedback control of neutralization basins, lime dosing systems, and biological nutrient removal (BNR) processes per EPA Method 150.1.
- Electroplating and semiconductor fab utilities: Precise pH management in etchant and cleaning bath recirculation systems where sub-0.05 pH deviation impacts process yield.
FAQ
What electrode types are supported by the TP110?
The analyzer accepts all standard BNC-terminated triple-composite pH electrodes, including low-conductivity, high-temperature sterilizable, flat-surface, and flow-cell variants—each optimized for specific matrix challenges.
Does the TP110 support automatic temperature compensation (ATC)?
Yes—integrated Pt1000 sensing provides real-time ATC across 0–60 °C; manual temperature entry is also available for fixed-point validation.
Can the device be integrated into a DCS or PLC system?
Yes—via isolated 4–20 mA analog output or optional Modbus RTU (RS-485) communication protocol with register mapping documentation provided.
Is calibration traceable to national standards?
Calibration uses NIST-traceable pH buffer solutions (e.g., pH 4.01, 7.00, 10.01 at 25 °C); certificate of conformance includes uncertainty budget per ISO/IEC 17025.
What is the expected service life of the internal memory under continuous operation?
Flash memory endurance exceeds 100,000 write cycles; data retention remains guaranteed for ≥10 years post-power-loss without auxiliary power.
