ODM Body Composition Analysis Machine

The device measures body composition using multi-frequency bioelectrical impedance analysis (MF-BIA). It sends low‑amplitude alternating currents through segmental electrodes placed on hands and feet. The resulting impedance vectors are used to calculate extracellular water, intracellular water, fat‑free mass, and fat mass.

Measurement Principle and Technology

The system operates at five discrete frequencies ranging from 1 kHz to 1 MHz.

Each frequency penetrates tissue to a different depth, enabling separate estimation of intracellular and extracellular fluid compartments.

Eight tactile electrodes (four on each hand and foot) provide segmental readings for the trunk, arms, and legs.

Technical Specifications

Parameter	Typical Value	Notes
Measurement technology	Multi‑frequency bioelectrical impedance analysis (MF‑BIA)	Standard
Frequency range	1 kHz – 1 MHz (5 frequencies)	Selected for multi‑compartment modeling
Number of electrodes	8 (segmental)	Hand‑to‑foot configuration
Measurement time	10 s – 5 min (protocol selectable)	Depends on selected analysis depth
Repeatability (CV%)	< 1 % (fat‑free mass)	Measured on same subject under stable conditions
Accuracy vs. DXA	R² ≥ 0.94 (fat mass)	Based on Bland‑Altman limits of agreement ±2 %
Output interfaces	USB‑CDC, Bluetooth LE, RS‑232 (configurable)	Factory‑set per order
Power consumption	< 2 W (idle), < 5 W (measurement)	DC 5 V input
Operating temperature	–10 °C to 45 °C	Relative humidity 10‑90 % non‑condensing
Dimensions (W×H×D)	120 mm × 80 mm × 30 mm	Enclosure only, excludes cable strain relief
Weight	250 g	Includes internal battery option

Typical Applications in Industry

In fitness facilities, segmental fat‑free mass readings enable trainers to assess muscle imbalances between limbs, guiding personalized strength programs.

Clinical settings use the device’s extracellular‑to‑intracellular water ratio to monitor edema progression in renal or cardiac patients.

Research labs rely on the high repeatability (CV < 1 %) to track longitudinal changes in body composition during intervention studies.

Customization Options for OEM Integration

OEMs can request alternative electrode materials such as stainless‑steel snap‑on or conductive rubber pads to match ergonomic design constraints.

Firmware can be tailored to output data via USB‑CDC, Bluetooth LE, or RS‑232, with selectable measurement protocols (e.g., quick 10‑second scan or full 5‑minute segmental analysis).

Enclosure dimensions and mounting interfaces are adjustable to integrate the measurement module into existing scales, treadmill consoles, or wall‑mounted kiosks.

Quality Control and Validation

Each unit undergoes a two‑point impedance calibration using precision resistors traceable to national standards before leaving the factory.

Batch testing includes a Bland‑Altman analysis against dual‑energy X‑ray absorptiometry (DXA) on a diverse cohort to verify limits of agreement within ±2 % fat mass.

Incoming electronic components are screened for tolerance and temperature coefficient to ensure measurement stability across the specified –10 °C to 45 °C operating range.

FAQ

• Can the electrode spacing be adjusted for different subject sizes? Yes, adjustable straps accommodate limb circumferences from 18 cm to 45 cm while maintaining consistent contact pressure.
• What information is required before quotation? Required details include desired measurement range, output interface preferences, enclosure constraints, and expected annual volume.
• How is quality inspected? Every device receives a two‑point impedance calibration, followed by functional testing and a Bland‑Altman comparison to DXA reference data.

Inquiry and Support

To discuss specific OEM requirements or request a technical datasheet, please contact our engineering team.

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