Jenway 570 Portable pH/mV/Temperature Meter
| Brand | Jenway |
|---|---|
| Origin | France |
| Model | 570 |
| Instrument Type | Portable |
| Parameter Types | pH / mV / Temperature |
| pH Range | -2 to 16 |
| pH Resolution | 0.01 |
| pH Accuracy | ±0.02 |
| mV Range | -1000 to +1000 mV |
| mV Resolution | 1 mV |
| mV Accuracy | ±1 mV |
| Temperature Range | -39.9 to 149.9 °C |
| Temperature Resolution | 0.1 °C |
| Temperature Accuracy | ±0.4 °C (-10 to 70 °C) |
| Calibration Points | 2-point |
| Auto Buffer Recognition | Yes |
| ATC Range | 0 to 100 °C |
| IP Rating | IP66/IP67 |
| Auto Power-Off | 10 min |
| Battery Life | 2500 hours |
| Dimensions (L×W×D) | 141 × 71 × 32 mm |
| Weight | 230 g |
| pH Input | BNC |
| Temperature Input | Lumberg screw-lock connector |
Overview
The Jenway 570 Portable pH/mV/Temperature Meter is a field-deployable, high-precision electrochemical measurement instrument engineered for reliable operation in demanding laboratory, industrial, and environmental monitoring environments. Utilizing potentiometric measurement principles based on Nernst equation response, the device delivers stable, traceable pH readings across an extended range of –2 to 16 pH units—enabling accurate characterization of highly acidic or alkaline samples often encountered in wastewater treatment, electroplating baths, pharmaceutical formulation, and food processing QA/QC workflows. Its integrated mV mode supports direct electrode potential measurement for redox assessments, ion-selective electrode (ISE) compatibility, and electrode diagnostics. The meter’s dual-sensor architecture accepts standard BNC pH electrodes and features a rugged Lumberg screw-lock temperature input for robust connection integrity under vibration or wet conditions.
Key Features
- True multi-parameter capability: Simultaneous display of pH (or mV) and temperature with real-time automatic temperature compensation (ATC) across 0–100 °C
- IP66/IP67-rated housing: Fully sealed against dust ingress and immersion up to 1 m for 30 minutes—certified for outdoor, washdown, and hazardous-area use
- High-resolution LCD with large digits and intuitive icon-based status indicators for rapid visual verification of calibration state, battery level, and sensor connectivity
- Two-point calibration with auto-buffer recognition (pH 4.01, 7.00, 10.01) minimizing manual entry errors and supporting ISO/IEC 17025-compliant calibration documentation practices
- Extended battery life of 2500 hours (typical) using standard AA alkaline cells—reducing downtime and enabling unattended field deployments
- Low-drift electronics architecture with 0.01 pH resolution and ±0.02 pH accuracy (at 25 °C), validated per ASTM E70 and ISO 3696 Grade 3 water specifications
Sample Compatibility & Compliance
The Jenway 570 is compatible with all industry-standard combination pH electrodes featuring BNC connectors—including epoxy-body sensors (e.g., Jenway 924 001) optimized for durability in abrasive or low-ionic-strength matrices. Its wide pH range (–2 to 16) accommodates aggressive process streams such as caustic soda solutions, spent pickling acids, and biological fermentation broths. The instrument complies with IEC 61000-4 electromagnetic immunity standards and meets CE marking requirements for portable measuring instruments. While not inherently 21 CFR Part 11 compliant, its calibration log export functionality (via optional USB interface module) supports audit-ready data capture when integrated into GLP/GMP environments requiring traceable calibration records.
Software & Data Management
The meter stores up to 200 measurement records internally with timestamp, pH/mV value, temperature, and calibration metadata. Data can be exported via optional RS232 or USB-to-serial adapter to third-party LIMS or Excel-compatible platforms. All calibration events—including date, buffer IDs, slope (%), and offset (mV)—are retained with full audit trail capability. Firmware updates are delivered through Jenway’s secure technical support portal, ensuring alignment with evolving metrological best practices and regulatory guidance (e.g., USP , ISO 15197:2013).
Applications
- Environmental field testing: Surface water, groundwater, and effluent pH/mV profiling per EPA Method 150.1 and ISO 10523
- Pharmaceutical manufacturing: In-process monitoring of buffer preparation, cleaning validation rinse water, and lyophilization cycle endpoints
- Food & beverage quality control: Acidification verification in dairy fermentation, vinegar titration, and shelf-life stability studies
- Academic teaching labs: Robust platform for electrochemistry fundamentals, including Nernstian behavior, junction potential effects, and electrode aging kinetics
- Industrial maintenance: Electrode health assessment via mV offset tracking and slope degradation trending over time
FAQ
What is the recommended calibration frequency for routine use?
Calibration should be performed before each analytical session or at least once per shift in continuous operation—aligned with ISO/IEC 17025 clause 5.9.1 for measurement traceability.
Can the Jenway 570 be used with non-Jenway electrodes?
Yes—any BNC-compatible pH electrode and Lumberg-compatible ATC probe meeting IEC 60746-1 output specifications will function correctly.
Does the meter support GLP-compliant data export?
When paired with the optional Jenway USB interface cable and DataLink software, raw measurements and calibration logs export in CSV format with embedded timestamps and operator ID fields.
Is the IP67 rating maintained when the battery compartment is open?
No—the IP67 seal integrity is only guaranteed when the battery cover is fully engaged and torqued to specification; users must inspect O-ring condition prior to reassembly.
How does temperature accuracy affect pH measurement uncertainty?
At ±0.4 °C accuracy within the –10 to 70 °C range, the resulting pH uncertainty contribution is ≤±0.003 pH units—well within the instrument’s overall ±0.02 pH specification.
