TimePower TP122 Online Conductivity Analyzer
| Brand | TimePower |
|---|---|
| Origin | Beijing, China |
| Manufacturer Type | Manufacturer |
| Country of Origin | Domestic (China) |
| Model | TP122 |
| Price | Upon Request |
| Display | 128×64 dot-matrix LCD, Chinese interface |
| Measurement Range | 0–1000 mS/cm |
| Accuracy | ±2.5% F.S. |
| Resolution | 0.1 mS/cm |
| Repeatability | 1% F.S. |
| Temperature Sensor | Pt1000 |
| Temp. Compensation Range | 0–60 °C |
| Sample Temp. Range | 5–50 °C |
| Ambient Temp. Range | 5–45 °C |
| Temp. Resolution | 0.1 °C |
| Temp. Error | ±0.5 °C |
| Humidity Limit | ≤90% RH (non-condensing) |
| Storage Temp. | −25–55 °C |
| Power Supply | AC 85–265 V, 45–65 Hz |
| Power Consumption | ≤15 W |
| Dimensions | 145 × 120 × 150 mm |
| Panel Cutout | 138 × 138 mm |
| Weight | 0.64 kg |
| Isolated Current Output | 0–10 mA / 0–20 mA / 4–20 mA (selectable) |
| Load Capacity | ≤750 Ω |
| Output Accuracy | 1% F.S. |
| Relay Output | AC 250 V / 5 A or DC 30 V / 5 A |
| Mounting | Panel-mount / Wall-mount / Rack-mount |
| Electrode Options | Flow-through / Immersion / Flanged (custom configurations available) |
Overview
The TimePower TP122 Online Conductivity Analyzer is a microprocessor-based, industrial-grade continuous monitoring instrument engineered for high-stability measurement of electrical conductivity in aqueous process streams. It operates on the principle of two-electrode or four-electrode conductometric sensing—depending on electrode configuration—where conductivity is derived from the measured conductance of the solution normalized to cell constant (k = L/A), expressed in millisiemens per centimeter (mS/cm). The analyzer integrates real-time temperature compensation using a Pt1000 sensor, applying the standardized nonlinear temperature correction algorithm (e.g., based on NaCl reference tables per ISO 7888 or ASTM D1125) to ensure traceable accuracy across varying thermal conditions. Designed for unattended, long-term deployment, the TP122 meets the operational demands of continuous process control in regulated and non-regulated environments—including boiler feedwater, desalination pre-treatment, chemical dosing loops, wastewater effluent monitoring, and pharmaceutical water systems (PW, WFI, and Purified Water per USP ).
Key Features
- Full Chinese-language graphical user interface with intuitive menu navigation—optimized for plant operators without specialized instrumentation training
- High-integrity signal conditioning architecture featuring 24-bit analog-to-digital conversion and embedded single-chip microcontroller processing for stable baseline performance
- Monolithic PCB design eliminates mechanical potentiometers, rotary switches, and discrete calibration hardware—reducing drift and field maintenance requirements
- Optically isolated 4–20 mA current output (configurable as 0–10 mA or 0–20 mA) with ≤750 Ω load capacity and ≤1% F.S. output accuracy—designed for compatibility with DCS, PLC, and SCADA systems
- IP65-rated front panel enclosure ensures resistance to dust ingress and water jets—suitable for outdoor mounting in utility corridors, pump stations, and chemical metering skids
- Multi-parameter display showing real-time conductivity, compensated temperature, system status, and timestamp—enabling rapid visual verification without external HMI
- Programmable relay outputs (AC 250 V / 5 A or DC 30 V / 5 A) supporting high/low limit alarms, pump interlocks, or auto-sampling triggers—fully configurable via front-panel interface
Sample Compatibility & Compliance
The TP122 supports a broad range of aqueous media, including low-conductivity boiler feedwater (<1 µS/cm equivalent), mid-range cooling tower recirculation water (0.5–5 mS/cm), and high-conductivity brine or caustic solutions (up to 1000 mS/cm). Electrode selection—flow-through, immersion, or flanged—is determined by sample velocity, fouling tendency, and piping constraints; all configurations maintain consistent cell constant traceability. While the analyzer itself does not carry CE, UKCA, or UL certification out-of-box, its electrical isolation, creepage/clearance design, and EMC resilience (per IEC 61326-1 Class A) support integration into systems compliant with IEC 61511 (functional safety) and ISO 9001/QA workflows. For GMP-regulated applications, optional audit-trail-enabled firmware upgrades and 21 CFR Part 11–compatible data logging modules are available upon request.
Software & Data Management
The TP122 operates autonomously without external software dependencies. All configuration—including measurement range scaling, temperature compensation coefficients, alarm thresholds, and output mapping—is performed locally via membrane keypad and LCD. Historical data is not stored onboard; however, the isolated analog output and relay states provide deterministic, real-time signals suitable for connection to third-party historians (e.g., OSIsoft PI, Emerson DeltaV, or Siemens Desigo CC). Optional RS485 Modbus RTU communication (add-on module) enables read-only access to live parameters and diagnostic flags—facilitating centralized monitoring in multi-analyzer deployments. Calibration logs and maintenance timestamps are retained in non-volatile memory and viewable on-screen, supporting GLP documentation requirements.
Applications
- Power generation: Continuous monitoring of condensate polisher effluent and steam cycle purity assurance
- Chemical & fertilizer plants: Reaction mixture conductivity control in ammonium nitrate synthesis and phosphoric acid concentration
- Municipal water treatment: Raw water quality trending, coagulant dosing feedback, and distribution system integrity verification
- Pharmaceutical manufacturing: Conductivity verification of purified water (PW) and water for injection (WFI) distribution loops per EU Annex 1 and USP
- Food & beverage: CIP rinse water validation, syrup concentration checks, and wastewater salinity screening prior to biological treatment
- Metallurgical processes: Electrolyte bath monitoring in electroplating and leaching circuits
FAQ
What conductivity ranges does the TP122 support out-of-the-box?
The standard configuration covers 0–1000 mS/cm. Custom linear ranges—including 0–6 mS/cm and 0–60 mS/cm—are factory-configured upon order to optimize resolution and signal-to-noise ratio for low-conductivity applications.
Is temperature compensation mandatory—and how is it implemented?
Yes. Automatic temperature compensation (ATC) is enabled by default using the integrated Pt1000 sensor. The instrument applies a programmable β-coefficient or built-in NaCl reference curve per ISO 7888 to convert raw conductance into temperature-normalized conductivity at 25 °C.
Can the TP122 be used in hazardous areas?
The base unit is rated for general-purpose use (non-hazardous locations). For Zone 1/2 or Class I Div 1 installations, intrinsically safe barrier-compatible electrode assemblies and explosion-proof enclosures must be specified separately.
What maintenance intervals are recommended for routine operation?
Electrode cleaning and calibration verification are advised every 1–3 months depending on fouling rate; no internal recalibration is required—the analog output remains stable due to digital gain/offset storage in EEPROM.
Does the TP122 support MODBUS communication natively?
No. RS485 Modbus RTU functionality requires an optional communication module installed at time of order or during field retrofit—contact technical support for part number and firmware compatibility details.
