Tanita SC-331S
Tanita · Model SC-331S
• Comprehensive full-body composition monitor from Tanita • Includes FDA cleared body fat analysis for kids, ages 5 to 17 • Includes collegiate and high school wrestling weight calculations • Portable design makes for easy mobility • USB output is EMR ready, compatible with Tanita Health Ware software
Key tips
- ·Mounting and securement hardware takes real fatigue from vibration and road shock - inspect it as carefully as the device itself.
- ·Post-call battery and function checks catch transport-induced faults that a scheduled PM would miss for months.
Typical Failure Modes
Failure patterns typical of this equipment class - general BMET reference, not verified against this exact unit's own service history unless flagged. Severity is a category-level estimate.
Calibration drift
HighSymptoms: Weight reading inaccurate or fails a known-weight check.
Root cause: Load cell drift or environmental settling.
Load cell / strain gauge failure
HighSymptoms: Erratic, zero, or no reading under load.
Root cause: Overload damage or connector corrosion.
Display fault
MediumSymptoms: Blank, flickering, or partial digit display.
Root cause: Display module or ribbon-cable failure.
Battery / power fault
MediumSymptoms: Won't power on, intermittent shutdown, low-battery indicator.
Root cause: Aged or depleted battery.
Serviceable Parts & Consumables
The parts a BMET typically services on this class of equipment. Service class and relative cost are general engineering estimates for the category, not figures from this unit's documentation. Part numbers appear only when pulled from this unit's own service manual. Always confirm intervals and pricing against the manufacturer.
Load cell / strain gauge assembly
Class Major service partRel. cost $$$R&R Moderate
Display module
Class Periodic replacementRel. cost $$R&R Fairly easy
Battery (rechargeable or replaceable)
Portable/wireless units only.
Class Periodic replacementRel. cost $R&R Easy
Weighing platform
Class Major service partRel. cost $$R&R Fairly easy
| Part | Service class | Relative cost | R&R difficulty |
|---|---|---|---|
| Load cell / strain gauge assembly | Major service part | $$$ | Moderate |
| Display module | Periodic replacement | $$ | Fairly easy |
| Battery (rechargeable or replaceable) Portable/wireless units only. | Periodic replacement | $ | Easy |
| Weighing platform | Major service part | $$ | Fairly easy |
Relative cost: $ lowest · $$$$ highest service-part cost for this equipment class. Not a price.
PM Checklist
Preventive-maintenance tasks typical of this equipment class. Perform to the manufacturer's procedure and your facility's policy - this is general reference, not a schedule for this specific unit.
- ·Post-call function and battery check
- ·Mounting / securement inspection
- ·Annual full PM and vibration-tolerance check
Troubleshooting Approach
A structured starting point derived from the failure modes above. Follow the manufacturer's service documentation for the actual procedure.
Symptom: Calibration drift
- Confirm the presentation - typically weight reading inaccurate or fails a known-weight check.
- Check the most likely cause first: load cell drift or environmental settling.
- Inspect the affected subsystem against the manufacturer's inspection checklist.
- If the fault is confirmed and not a field adjustment, service or replace the load cell / strain gauge assembly per the manufacturer's service documentation.
- Return the device to service only after the manufacturer's functional and applicable electrical-safety checks pass.
- Record the findings, any parts used, and the verification results in the maintenance history.
Symptom: Load cell / strain gauge failure
- Confirm the presentation - typically erratic, zero, or no reading under load.
- Check the most likely cause first: overload damage or connector corrosion.
- Inspect the affected subsystem against the manufacturer's inspection checklist.
- If the fault is confirmed and not a field adjustment, service or replace the display module per the manufacturer's service documentation.
- Return the device to service only after the manufacturer's functional and applicable electrical-safety checks pass.
- Record the findings, any parts used, and the verification results in the maintenance history.
Technical Specs
- Length
- 14.8 in
- Weight
- 15 lbs
- Kind
- Standing
- Width
- 14.6 in
Typical Location
Where this class of equipment is typically deployed - general reference, not this unit's own placement record.
- Ambulance / transport vehicles
- Emergency Department
- Inter-facility transport teams
Documents & Manuals
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Describe a symptom or error code. Bio answers from this device's own documented error codes, failure modes, parts, and guides.
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