
A body mass analyzer determines body composition by sending a low‑level alternating current through the torso and measuring the resulting impedance. Multi‑frequency bioelectrical impedance analysis
Inquire NowA body mass analyzer determines body composition by sending a low‑level alternating current through the torso and measuring the resulting impedance. Multi‑frequency bioelectrical impedance analysis (MF‑BIA) separates extracellular water, intracellular water, and fat mass, providing segmental results for arms, legs, and trunk.
The technique is non‑invasive, requires only surface electrodes, and delivers results in under 30 seconds. Accuracy depends on electrode placement, subject hydration, and the algorithm used to convert impedance to composition values.
| Parameter | Typical Value | Notes |
|---|---|---|
| Measurement range (fat mass) | 2 % – 60 % | Dependent on subject BMI |
| Impedance measurement frequency | 5 kHz, 50 kHz, 250 kHz | Multi‑frequency enables water compartment separation |
| Resolution (weight) | 0.1 kg | Displayed to one decimal place |
| Power consumption | < 2 W (standby < 0.5 W) | USB‑C or mains adapter |
| Operating temperature | 10 °C – 40 °C | Relative humidity 10 % – 90 % non‑condensing |
| Dimensions (W×D×H) | 340 mm × 300 mm × 110 mm | Includes foot electrodes and hand grips |
| Weight | 4.2 kg | Portable with carrying handle |

The device’s segmental capability provides localized data that scales with limb circumference, making it suitable for populations with asymmetrical fluid retention, a scenario where whole‑body only methods lose sensitivity.
The housing is constructed from ABS‑PC blend with a UL‑94 V‑0 flame rating, providing impact resistance while keeping the unit lightweight. Electrodes are stainless‑steel 316L with a low‑contact‑resistance coating to reduce skin impedance variance.
Internal circuitry uses a 24‑bit analog‑to‑digital converter sampling at 1 kS/s per channel, enabling precise phase‑sensitive detection of impedance across the selected frequencies. A built‑in temperature sensor compensates for ambient drift in the measurement bridge.
Firmware stores calibration coefficients in non‑volatile memory and allows field verification via a reference resistor network accessed through the service port.
Each unit undergoes a three‑point impedance verification using precision resistors traceable to national standards. The acceptance criterion is ±0.5 % of the nominal value at each test frequency.
Software algorithms are validated against dual‑energy X‑ray absorptiometry (DXA) reference data collected from a diverse cohort (age 18‑70, BMI 18‑35). Regression coefficients are locked before shipment; any firmware update requires re‑validation.
Final inspection includes a visual check of electrode integrity, LCD readability, and tactile feedback of the start button. Units are packaged with anti‑static foam and a desiccant packet to protect electronics during transit.
Customization requests are evaluated for impact on measurement accuracy; any change that alters the electrode geometry requires a new validation protocol before release.
The hardware supports impedances corresponding to fat mass as low as 1 % and as high as 75 %; however, the standard algorithm is optimized for adult physiology. Pediatric‑specific equations are available as a firmware option.
Required details include intended application (clinical, research, wellness), electrode configuration, desired output format, and any regulatory certifications needed (e.g., FDA 510(k), CE marking).
Every unit receives impedance verification, software checksum validation, and a functional test simulating a full measurement cycle. Documentation of test data is supplied with each shipment.
Standard packaging is a single‑wall corrugated box with interior foam inserts. For export, double‑wall cartons with moisture‑barrier lining and shock‑absorbing corners can be arranged.
To discuss technical specifications, customization, or request a formal quotation, please use the inquiry form linked below. Our engineering team will respond within one business day.
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