Sable FMS- Portable Multi-Parameter Respirometry System
| Brand | Sable |
|---|---|
| Origin | USA |
| Manufacturer Type | Authorized Distributor |
| Origin Category | Imported |
| Model | FMS- |
| Price Range | USD 7,200 – 14,300 |
| Dimensions | 35 × 30 × 15 cm |
| Weight | 4.0 kg |
| Power Supply | 12–15 VDC (AC adapter included) |
| Data Storage | Removable SD card (up to 32 GB) |
| Sampling Interval | 0.1 s – 1 h (user-configurable) |
| Gas Flow Control | 10–1500 mL/min (microelectronic thermal feedback loop, ±2% accuracy) |
| O₂ Sensor | Fuel cell, 0–100%, resolution 0.001%, drift <0.02%/h |
| CO₂ Sensor | NDIR dual-wavelength, 0–5%, resolution 0.0001–0.01%, drift <0.001%/h |
| H₂O Sensor | Platinum-electrode capacitive, 0–100% RH (non-condensing), resolution 0.001% RH, drift <0.01% RH/h |
| Temperature Compensation | Automatic (0–100 °C, ±0.2 °C accuracy) |
| Pressure Compensation | Automatic (30–110 kPa) |
| Analog Inputs | 8-channel bipolar voltage, 4-channel temperature |
| Digital I/O | 8 TTL control outputs, RS-232/USB + SableBus high-speed interface |
Overview
The Sable FMS- Portable Multi-Parameter Respirometry System is a field-deployable, open-circuit metabolic measurement platform engineered for high-fidelity quantification of oxygen consumption (VO₂), carbon dioxide production (VCO₂), water vapor pressure (H₂O), and respiratory exchange ratio (RER) across diverse biological systems. Built upon validated principles of differential gas analysis and mass flow-controlled respirometry, the FMS- integrates precision gas sensing, real-time environmental compensation, and embedded data acquisition into a single ruggedized enclosure. Its architecture conforms to core methodologies described in ASTM E2579 (Standard Practice for Measuring Metabolic Rates), ISO 8573-1 (compressed air purity for physiological instrumentation), and supports experimental compliance with GLP and GMP-aligned data integrity frameworks—including audit-trail-capable timestamping, sensor calibration logging, and immutable SD-card-based raw-data storage. Designed for longitudinal and comparative studies, the system enables accurate metabolic phenotyping under controlled lab conditions or uncontrolled field environments—without reliance on external PCs during acquisition.
Key Features
- Integrated dual-channel gas path architecture: BaseLine and Chamber modes enable rapid switching between reference and sample streams for baseline drift correction and dynamic chamber purging.
- Triple-sensor gas analysis suite: Electrochemical O₂ fuel cell (2-year typical service life, field-replaceable), NDIR CO₂ analyzer with dual-wavelength compensation, and platinum-electrode capacitive hygrometer—all factory-calibrated and traceable to NIST standards.
- Microelectronic mass flow control: Closed-loop thermal feedback system regulates flow from 10 to 1500 mL/min with ±2% full-scale accuracy; resolution: 0.1 mL/min (≤99.9 mL/min), 1 mL/min (>100 mL/min).
- Environmental compensation engine: Real-time correction for ambient temperature (0–100 °C, ±0.2 °C) and barometric pressure (30–110 kPa), eliminating spurious RER shifts caused by altitude or diurnal atmospheric variation.
- Embedded 7-inch capacitive touchscreen interface: Displays synchronized time-series plots of VO₂, VCO₂, H₂O, barometric pressure, RH, analog inputs, SD card status, sampling progress, and system diagnostics—no host PC required.
- Expandable I/O architecture: Eight configurable analog inputs (±10 V), four dedicated thermistor channels, eight TTL digital control outputs, and dual communication interfaces (RS-232/USB + proprietary SableBus) support integration with third-party actuators, video tracking systems, infrared thermography, or implantable biologgers.
Sample Compatibility & Compliance
The FMS- accommodates a broad spectrum of biological models—from sub-milligram insects (e.g., Drosophila, mosquitoes) and small mammals (mice, gerbils) to large avian and mammalian subjects (birds, marine mammals, livestock, and human volunteers). Its modular chamber design supports custom-built or commercially available metabolic chambers—including flow-through rodent cages, facemasks for human exercise testing, portable avian respirometry hoods, and sealed soil microcosms. All gas pathways comply with USP Analytical Instrument Qualification guidelines for critical parameter verification (flow linearity, sensor response time, cross-sensitivity validation). Data files generated adhere to FAIR principles (Findable, Accessible, Interoperable, Reusable) via standardized CSV and HDF5 export formats. The system meets essential requirements for FDA 21 CFR Part 11 compliance when deployed with Sable’s optional software suite featuring electronic signatures, role-based access control, and immutable audit logs.
Software & Data Management
Acquisition and analysis are managed via Sable Systems’ ExpeData™ v6.x software (Windows 10/11 compatible), which provides real-time visualization, automated peak detection, stoichiometric conversion (Weir equation, Lusk tables), and batch processing of multi-session datasets. Raw sensor voltages, timestamps, and metadata (calibration dates, chamber volumes, flow rates) are stored in binary format with lossless compression and checksum validation. Export options include time-aligned CSV, MATLAB .mat, and Python-compatible .h5—enabling direct integration into Jupyter workflows or statistical pipelines (R, Python SciPy). For regulatory submissions, the software supports IQ/OQ documentation templates aligned with ISO/IEC 17025 and supports ALCOA+ data integrity criteria (Attributable, Legible, Contemporaneous, Original, Accurate, Complete, Consistent, Enduring, Available).
Applications
- Comparative respiratory physiology: Developmental trajectories of ventilatory CO₂ sensitivity in fossorial vs. non-fossorial rodents (Sprenger et al., Respir Physiol Neurobiol 2019).
- Human metabolic phenotyping: Quantification of energy demand and mechanical efficiency during pregnancy-associated locomotion (Denize et al., Appl Physiol Nutr Metab 2019).
- Veterinary and agricultural science: Methane emission profiling in dairy cattle under circadian feeding regimens (Maia et al., 21st Int. Congress Biometeorology 2017).
- Ecophysiology and climate adaptation: Thermal balance modeling in tropical livestock (de Melo Costa et al., Int J Biometeorol 2018) and metabolic rate plasticity at invasive range margins (Louppe et al., J Zool 2018).
- Toxicology and environmental health: Resting metabolic rate disruption following early-life triphenyl phosphate exposure in avian models (Guigueno et al., Environ Pollut 2019).
- Neuroethology and behavior-metabolism coupling: Integration with 2D/3D video tracking to correlate spontaneous locomotor activity with instantaneous VO₂ in freely moving subjects.
FAQ
What is the maximum continuous runtime on battery power?
The optional 4.8 Ah lithium-ion battery pack supports ≥6 hours of uninterrupted operation at nominal flow rates (200–500 mL/min) and ambient temperatures (15–25 °C). Runtime scales inversely with flow rate, sensor heater duty cycle, and screen brightness.
Can the FMS- be used for closed-system respirometry?
No—the FMS- is designed exclusively for open-circuit, flow-through respirometry. Closed-system measurements require separate pressure-compensated manometric or fluorometric platforms.
Is firmware upgradable in the field?
Yes. Firmware updates are delivered via SD card and applied through the touchscreen interface without disassembly or external hardware.
How is sensor calibration performed?
O₂ and CO₂ sensors are calibrated using certified span gases (e.g., 20.9% O₂ in N₂, 1% CO₂ in air) and zero gas (N₂). Calibration coefficients are stored in non-volatile memory with date/time stamps and user ID tagging.
Does the system meet CE or FCC regulatory requirements?
Yes. The FMS- carries CE marking (EMC Directive 2014/30/EU, RoHS 2011/65/EU) and FCC Class B compliance for electromagnetic emissions, verified per ANSI C63.4-2014.
