Budget Friendly Body Water Weight Analyzer Company
This device measures total body water and estimates fat-free mass using bioelectrical impedance analysis (BIA) at a single frequency of 50 kHz. The hardware consists of four stainless‑steel
Inquire NowBudget Friendly Body Water Weight Analyzer
This device measures total body water and estimates fat-free mass using bioelectrical impedance analysis (BIA) at a single frequency of 50 kHz. The hardware consists of four stainless‑steel electrodes arranged for hand‑to‑foot measurement, a low‑power microcontroller, and a liquid‑crystal display that shows results in 0.1 kg increments.
Technology Overview
BIA works by passing a harmless alternating current through the body and measuring the voltage drop. The impedance (Z) is related to total body water (TBW) through empirical equations that incorporate height, weight, age, and gender. The analyzer uses a fixed 50 kHz signal because extracellular water dominates impedance at this frequency, reducing variability caused by intracellular shifts.
Electrode contact resistance is kept below 5 Ω through spring‑loaded contacts and a conductive gel layer, ensuring that measured impedance reflects tissue properties rather than interface artifacts.
Key Specifications
The following table lists typical performance parameters that can be adjusted per project requirements.
| Parameter | Typical Value | Adjustable Range |
|---|---|---|
| Measurement Frequency | 50 kHz | 20 kHz – 100 kHz |
| Current Excitation | 0.5 mA rms | 0.2 mA – 1.0 mA |
| Impedance Resolution | 0.1 Ω | 0.05 Ω – 0.2 Ω |
| Display | 128×64 pixel LCD | OLED or TTL optional |
| Power Supply | 2×AA alkaline | Rechargeable Li‑ion pack |
| Operating Temperature | 0 °C – 40 °C | ‑10 °C – 50 °C (with enclosure) |
Applications
In fitness centers, the analyzer provides quick hydration status before training sessions, allowing coaches to adjust fluid intake recommendations based on measured TBW changes of ±0.5 kg.
Clinical wellness programs use the device to monitor edema progression in patients undergoing dialysis, where a shift of 1 L in extracellular water corresponds to approximately 1 kg weight change detectable by the analyzer.
Research laboratories employ the unit for longitudinal studies on aging, where tracking total body water trends over months helps assess sarcopenia risk with a measurement repeatability of ±0.2 kg under controlled conditions.
Design and Construction
The housing is acrylonitrile‑butadiene‑styrene (ABS) with a wall thickness of 2 mm, providing impact resistance up to 5 J while keeping the unit weight under 150 g.
Electrodes are fabricated from 316L stainless steel, electropolished to a surface roughness of Ra 0.2 µm, which minimizes polarization effects and ensures stable contact impedance over 10 000 measurement cycles.
Internal PCB follows a four‑layer layout with separate analog and digital grounds, reducing crosstalk to less than –60 dB at the excitation frequency.
Customization Options
Clients may request alternative electrode configurations, such as hand‑to‑hand or foot‑to‑foot arrangements, which require changes to the current‑injection circuitry and the accompanying analysis algorithm.
Firmware can be tailored to output additional parameters like basal metabolic rate or intracellular water estimate, using user‑provided regression coefficients.
Enclosure colors, logo placement, and cable length are adjustable without affecting the core measurement electronics.
Quality Assurance
Each unit undergoes a three‑step verification: (1) impedance linearity test using precision resistors covering 100 Ω–1000 Ω range, (2) electrode contact resistance check with a four‑wire kelvin probe, and (3) functional test with a saline phantom of known conductivity to validate TBW calculation within ±1 %.
Production lots are sampled for environmental stress screening, including temperature cycling (‑20 °C to 60 °C, 10 cycles) and humidity exposure (90 % RH, 48 h) to confirm long‑term stability of the measurement circuitry.
Frequently Asked Questions
A: Yes, the analog front‑end supports frequencies from 20 kHz to 100 kHz; firmware selects the frequency based on the selected measurement mode.
A: We need the intended application, desired electrode arrangement, any custom output parameters, and expected annual volume to calculate tooling and pricing.
A: Units are packed in anti‑static polyethylene foam inside double‑wall corrugated cartons, with corner protectors and a moisture‑barrier bag to meet ISTA‑1A standards.
Get More Information
If you would like to discuss how this analyzer can be integrated into your workflow, please contact our technical team.
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