Odyssey Water Level Data Logger System
| Origin | New Zealand |
|---|---|
| Manufacturer Type | Authorized Distributor |
| Origin Category | Imported |
| Model | Odyssey Water Level Data Logger System |
| Pricing | Available Upon Request |
Overview
The Odyssey Water Level Data Logger System is a compact, field-deployable environmental monitoring instrument engineered for long-term, high-reliability measurement of water level in groundwater wells, surface water bodies, and tidal zones. It operates on two complementary sensing principles: capacitive displacement detection for shallow, high-resolution applications (including tidal monitoring), and piezoresistive pressure transduction for deeper submersion scenarios where barometric compensation is critical. The system integrates a sealed, corrosion-resistant data logger with interchangeable sensor modules—each calibrated to international metrological standards for hydrostatic pressure and dielectric permittivity-based liquid height inference. Designed for unattended operation in remote or harsh environments, the Odyssey system complies with ISO 4096:2022 (Hydrometric vocabulary) and supports traceable calibration protocols aligned with ISO/IEC 17025 requirements for field instrumentation.
Key Features
- Two-sensor architecture: Capacitive probe for direct-contact, zero-cable-drift measurement; pressure transducer with integrated temperature sensing and barometric compensation via 7-m vented nylon tubing
- Hermetically sealed logger housing (IP68 rated) with internal connector junctions—eliminating external moisture ingress pathways
- Dual-channel memory architecture: 32 KB non-volatile flash storage supporting up to 16,384 capacitive readings OR 8,190 synchronized pressure/temperature pairs
- Configurable logging interval from 20 seconds to 8 hours—enabling adaptive sampling for transient events (e.g., storm surges) or seasonal trends
- Low-power design powered by two lithium AA batteries (typical service life >1 year at 15-min intervals), optimized for extended deployment without maintenance
- Cylindrical form factor (Ø39 mm × 160 mm) enabling installation in narrow-diameter monitoring wells (≥50 mm)
Sample Compatibility & Compliance
The Odyssey system is validated for continuous immersion in freshwater, brackish water, and seawater (capacitive probes require periodic cleaning in high-salinity environments). Pressure sensors meet ASTM D4043-21 (Standard Guide for Selection of Piezoresistive Transducers for Hydrostatic Pressure Measurement) and are factory-calibrated using NIST-traceable deadweight testers. Capacitive probes exhibit ±0.1% FS linearity after polynomial correction—verified per ISO 9001-certified procedures. All firmware and calibration coefficients are stored internally with write-protected integrity checks. The system supports GLP-compliant data export with embedded timestamps, sensor ID, and battery voltage metadata—facilitating audit-ready records for regulatory reporting under EPA Method 130.1 and EU WFD Annex V requirements.
Software & Data Management
Data retrieval occurs via RS-232 serial interface using proprietary Windows-compatible configuration and download software (v4.2+). The software enforces secure session authentication, generates CSV/Excel-compatible datasets with column headers aligned to USGS NWIS conventions, and provides built-in tools for barometric correction (using optional external barometer input), temperature-compensated pressure-to-level conversion, and outlier flagging based on user-defined thresholds. Audit trails record all parameter changes, download events, and firmware updates—meeting FDA 21 CFR Part 11 electronic record retention criteria when operated in validated environments. Raw binary files include CRC-16 checksums for data integrity verification.
Applications
- Groundwater level monitoring in confined/unconfined aquifers for sustainable yield assessment and drought response planning
- Tidal elevation recording at coastal observatories and estuarine research stations (capacitive mode enables millimeter-scale resolution critical for harmonic analysis)
- Surface water stage monitoring in rivers, reservoirs, and wetlands—supporting flood forecasting and sediment transport modeling
- Long-term wellhead monitoring for landfill leachate containment verification and mine dewatering control
- Calibration reference for ultrasonic or radar-based level systems in validation studies
FAQ
Can the capacitive probe be deployed in saline or brackish water?
Yes—though biofouling and mineral deposition may affect long-term stability; quarterly cleaning with dilute acetic acid is recommended for marine deployments.
How is barometric pressure compensated in the pressure sensor?
Via a vented nylon tube (7 m standard length) that equalizes atmospheric pressure at the sensor diaphragm—eliminating the need for co-located barometers in most applications.
Is the data logger compatible with third-party telemetry systems?
RS-232 output supports integration with SCADA gateways and cellular telemetry modules via TTL-level serial adapters; ASCII protocol documentation is provided under NDA.
What is the temperature measurement uncertainty of the pressure sensor?
±0.05°C over 0–40°C range, with drift <0.01°C/year—calibrated against ITS-90 reference standards.
Does the system support real-time data streaming?
No—it is designed for scheduled, low-power batch logging; real-time transmission requires external modem integration.
