Marsden M-640 Bariatric & Wheelchair Scale, 300kg or 500kg Capacity, Class III Approved with Built-In Chair and Ramps
- Class III Approved, 300kg or 500kg capacity with multi-interval graduations, meeting NAWI Directive requirements for clinical weighing across the full range of wheelchair and bariatric patients in NHS hospitals, rehabilitation units and CQC-regulated care homes.
- High-capacity reinforced platform with built-in ramps and integrated chair option supports both wheelchair-based and seated patient weighing in a single scale, reducing the need for separate equipment across clinical areas with mixed mobility patient populations.
- Preset Tare deducts wheelchair weight automatically, with multi-interval precision, Hold function and full numeric keypad for BMI calculation, supporting accurate patient-only readings for drug dosing, nutritional assessment and bariatric pathway documentation.
- Optional Bluetooth and TP-2100 printer connectivity for EPR data transfer and printed clinical records, supporting NHS Digital audit requirements and NICE obesity pathway documentation across specialist bariatric and rehabilitation services.
Marsden M-640: Class III Approved High-Capacity Wheelchair and Bariatric Patient Scale
The Marsden M-640 is a high-capacity platform scale designed for the clinical weighing of patients in wheelchairs and those requiring seated support, available in 300kg and 500kg variants to cover the full range of wheelchair and bariatric clinical needs. With Class III approval under the NAWI Directive, built-in ramps for easy wheelchair access and an optional integrated chair for patients who can transfer to a seat, the M-640 is a versatile primary weighing solution for NHS hospitals, rehabilitation units, bariatric services and care homes where patient mobility ranges from partial wheelchair use to full bariatric dependency.
The 500kg capacity variant is the correct specification for NHS specialist bariatric services where electric powered wheelchairs combined with high-BMI patients can approach or exceed the 300kg range of standard wheelchair scales.
Product Specifications
| Specification | Detail |
|---|---|
| Capacity Options | 300kg or 500kg |
| Graduations | Multi-interval (precision varies by capacity) |
| Approval | Class III Approved (NAWI Directive) |
| Access Design | Built-in ramps, roll-on platform |
| Patient Options | Wheelchair or integrated chair (optional) |
| Key Functions | Preset Tare, Hold, BMI calculation via numeric keypad |
| Connectivity | Optional Bluetooth, TP-2100 printer |
Regulatory and Clinical Compliance
Class III approval under the NAWI Directive confirms the M-640 is authorised for patient monitoring, diagnosis and treatment in NHS and regulated settings. The 500kg capacity option directly addresses NHS England Bariatric Care Pathway requirements for accurate weight measurement across all BMI categories, including super-obese patients using powered bariatric wheelchairs where combined patient and chair weight can significantly exceed 300kg. Preset Tare is essential for clinical accuracy: the weight of a powered bariatric wheelchair can exceed 50kg, and manual subtraction introduces dosing calculation errors that automated Preset Tare eliminates.
Frequently Asked Questions
Can the M-640 weigh patients in powered electric wheelchairs?
Yes. The M-640's reinforced platform, built-in ramps and high capacity are designed to accommodate manual and powered wheelchairs including bariatric electric models. The Preset Tare function deducts the wheelchair weight automatically, delivering a patient-only reading. For very heavy powered chairs combined with high-BMI patients, the 500kg variant provides the capacity headroom needed to ensure both the chair and patient weight can be accommodated within the scale's rated range without risk of over-range error or inaccuracy.
When is the integrated chair option on the M-640 clinically appropriate?
The integrated chair option is appropriate for patients who can safely transfer from their wheelchair to a chair scale seat but cannot stand on a floor scale. This is common in rehabilitation settings where patients have partial lower limb function and can complete a short supervised transfer with assistance. Using the integrated chair eliminates the wheelchair weight from the weighing process entirely, giving a direct patient weight without the need for Preset Tare, and provides a comfortable, supported seat during the weighing episode for patients who tire quickly during transfers.
Part of our Class III approved Medical Scales and Measuring range. Medical wheelchair scales enable accurate weighing of patients remaining in their wheelchair in care homes and NHS settings.
NCL-M640
7 other products in the same category:
- Class III Approved, 300kg or 500kg capacity with multi-interval graduations, meeting NAWI Directive requirements for clinical weighing across the full range of wheelchair and bariatric patients in NHS hospitals, rehabilitation units and CQC-regulated care homes.
- High-capacity reinforced platform with built-in ramps and integrated chair option supports both wheelchair-based and seated patient weighing in a single scale, reducing the need for separate equipment across clinical areas with mixed mobility patient populations.
- Preset Tare deducts wheelchair weight automatically, with multi-interval precision, Hold function and full numeric keypad for BMI calculation, supporting accurate patient-only readings for drug dosing, nutritional assessment and bariatric pathway documentation.
- Optional Bluetooth and TP-2100 printer connectivity for EPR data transfer and printed clinical records, supporting NHS Digital audit requirements and NICE obesity pathway documentation across specialist bariatric and rehabilitation services.