Product Line
Low Profile Weight Scales
SMD Sensors' low profile precise weight scales offer a range of capacities from 0.1 to 1000 lbs, these scales are equipped with a full Wheatstone bridge and calibrated with custom electronics. As a result, the low profile scales are highly accurate exhibiting a ±0.05% accuracy including non-linearity, non-repeatability, and percentage-per-year drift. SMD scales offer rugged construction, featuring options such as splash resistance, RF immunity, overload protection. Scales can be made from unlimited color and material selection, and other custom design choices.
Featured Model
Model W130
Medical Diagnostic Scale — 8 kg
The W130 is an 8 kg low profile scale designed for medical instrumentation. Built on SMD's proprietary thin-film load cell technology with a full Wheatstone bridge and custom calibration electronics, it delivers ±0.05% accuracy over time. The low profile design integrates cleanly into diagnostic equipment, analyzers, and lab instruments.
Capacity
8 kg
Design
Low profile
Technology
Thin-film load cell
Applications
Medical Instrumentation
Industries Served
Weight Scale Features
High long-term zero point stability, low power consumption, low hysteresis, and compact design. Our scales are used to determine a myriad of liquid level, flow rate, and fluid measurement parameters. Applications served by these highly versatile scales include medical instrumentation, medical analyzing systems, force and displacement measurement, battery-powered equipment and food dispensing equipment.
Medical Devices
Reagent monitoring, IV fluid, waste management
Diagnostic Instruments
Analyzers, hematology, immunoassay systems
Semiconductor
Gas cylinder weighing, chemical dispensing
Laboratory
Sample prep, gravimetric measurement
Food & Dispensing
Ingredient dosing, portion control systems
Fluid Measurement
Flow rate via weight, drip monitoring
Life Science
Bioreactor media prep, buffer preparation
Industrial OEM
Automation, force/displacement measurement
Choosing the Right Scale
Custom Engineered Scales
SMD Sensors designs custom solutions on a regular basis. For example, a 5 kg stainless steel scale was developed for a semiconductor manufacturer, to weigh critical gas cylinders in a gas cabinet. The application called for a chemically resistant stainless steel scale less than 1" tall. SMD designed a 0.75" tall solution, see the Semiconductor Gas Cylinder Scales.
If you need
Small reagent or waste monitoring
Start with
W100
450 g capacity, compact footprint, ±0.05% accuracy, overload protected.
If you need
Reagent bottle or large container weighing
Start with
W110 / W120
2.8–3 kg capacity, splash resistant, RF immunity option for diagnostic environments.
If you need
Medical analyzer integration, 8–9 kg
Start with
W130 / W140
Low profile design fits medical instrumentation; W140 adds analyzing system support.
If you need
Hanging IV bag or fluid monitoring
Start with
W300
Hanging scale in 600 g to 3 kg variants for IV fluid measurement.
Scale Models
| Model | Name | Capacity | Dimensions (L × W × H) | Hysteresis | Non-Repeatability | Key Features | ||
|---|---|---|---|---|---|---|---|---|
 | W100 | Medical Reagent Scale | 0.45 kg [0.99 lb] | 4.50 × 3.50 × 1.20" [114.3 × 88.9 × 30.5 mm] | ±0.05% R.O. | ±0.05% R.O. | Overload protected, reagent & waste monitoring, RoHs available | View Product |
 | W110 | Low Profile Bottle Scale | 2.8 kg [6.17 lb] | 11.42 × 5.85 × 1.43" [290.0 × 148.6 × 36.6 mm] | ±0.75 g | ±0.75 g | RoHs available, custom platforms, long-term stability 0.1%/yr | View Product |
 | W120 | High Accuracy Reagent Scale | 3 kg [6.61 lb] | 5.22 × 4.08 × 1.75" [132.5 × 103.6 × 44.4 mm] | ±1.50 g | ±0.75 g | Overload protection, RoHs available, custom platforms | View Product |
| W130 | Medical Diagnostic Scale | 8 kg [17.63 lb] | 8.95 × 6.69 × 1.89" [227.3 × 169.9 × 48.0 mm] | < 0.01% R.O. | < 0.05% R.O. | RF immunity, RoHs available, custom platforms | View Product |
 | W140 | Medical Diagnostic Reagent Scale | 9 kg [19.84 lb] | 9.0 × 6.69 × 3.59" [228.6 × 169.9 × 91.2 mm] | ±5 g | ±5 g | Center balanced, RoHs available, medical analyzing systems | View Product |
 | W300 | Hanging Scale | 600 g / 1 kg / 2 kg / 3 kg | 3.75 × 1.34 × 5.80" [35.3 × 34.0 × 147.3 mm] | ±1% of span | ±1% of span | Low profile, low power, long-term stability, IV bag monitoring | View Product |
| Custom | Custom Scales | Application-specific | Any configuration | Per design | Per design | Any material, color, capacity — e.g. 0.75" stainless for semiconductor gas cylinders | View Product |