SmartBob® is a cable-based level measurement system that automates manual tape measurements for bins, silos, and tanks. Designed for bulk solids and select liquid applications, SmartBob delivers accurate, on-demand level readings in vessels up to 150 feet tall—without the need for climbing.
As a core component of BinMaster inventory management solutions, SmartBob integrates seamlessly with BinCloud® cloud software and Binventory® on-premise systems to provide real-time inventory visibility from a phone, tablet, or PC.
A generic name for a SmartBob is a weight-and-cable level sensor, bin bob, plumb bob or yo-yo sensor. It is also commonly referred to as an automated tape measure for inventory tracking.
Reliable Level Measurement for Challenging Materials
Unlike continuous sensors, SmartBob uses a weighted cable that lowers to the material surface and returns precise distance measurements. This makes it ideal for materials that create dust, buildup, or uneven surfaces where non-contact technologies may struggle.
SmartBob advantages:
- Accurate measurements up to 150 ft (45 m)
- Ideal for powders, grains, pellets, and bulk solids
- Unaffected by dust, dielectric changes, or material properties
- Works well in tall, narrow, or obstructed vessels
- Low maintenance with long service life
Flexible Models for Multiple Applications
SmartBob systems are available in configurations to meet a wide range of material handling needs.
Available options include:
- Standard SmartBob for dry bulk solids
- SS (Submersible Solids) models for brine tanks and submerged materials
- AO (Analog Output) models with built-in 4–20 mA output
- High-temperature models for extreme environments
- Multiple cable types, probes, and mounting accessories
This flexibility allows SmartBob to be tailored for industries including agriculture, feed, cement, plastics, food processing, and more.
| Means of Measurement | Plumb Bob |
|---|---|
| Measurement Type | Continuous Level |
| Medium | Solids |
| Voltage | 115 VAC, 230 VAC |
| Outputs | SmartBob Protocol |
| Ambient Temperature | -40°F to +185°F (-40°C to +85°C) |
| Process Temperature | Up to +500°F (260°C) |
| Approvals | CSA Class II, Groups E, F & G |
| Approvals | Ordinary Locations (non-hazardous) |
| Enclosure Type | NEMA 4X, NEMA 5X |
| Enclosure Material | Plastic |
| Mounting | 3" NPT |
| Conduit Entry | 0.75" NPT |
| Range | 150 ft. (45 M) |
SmartBob by BinMaster