Loose cables, exposed speed sensing and dirty friction wheels cause slip and inaccurate results. That affects your billing and production control.
FMS and TMX: a partnership for maximum reliability
TMX Solutions and FMS Force Measurement Systems from Switzerland have joined forces: we bring the most rugged and accurate belt scales for heavy bulk materials to Germany, with local service on site.
FMS belt scales have been the best-kept secret of the bulk materials industry for more than 25 years. In quarries, gravel plants, recycling plants and tunnel projects across Europe they run trouble-free under the harshest conditions. Now with local service in Germany through TMX Solutions.
Together with FMS we offer belt scales built not for the lab but for tough field use. Enclosed, low-maintenance, durable.
THE CHALLENGE
Challenges of conventional belt scales
When smooth production matters, you need a belt scale you can rely on. In many plants the reality looks different, and operators struggle with recurring problems:
Inaccurate measurements
Frequent failures
Dust, moisture and mechanical loads wear down conventional systems. Unplanned downtime costs time and money.
High maintenance effort
Exposed sensors and cables need constant cleaning, adjustment and maintenance. Resources you could use more productively.
Short service life
Cost-optimized designs fail under continuous load. Frequent replacement drives up lifecycle costs.
Our solution: FMS belt scales, enclosed and durable
FMS belt scales start where conventional systems fail: with a unique, fully enclosed design that works accurately and reliably even under extreme conditions.
Unique design
Unlike comparable belt scales, the speed sensor is fully enclosed inside the measuring idler. No exposed cables, no vulnerable friction wheel: just rugged Swiss engineering.
- Non-contact speed measurement directly in the measuring idler
- No slip, no contamination: maximum accuracy
- Hermetically sealed force measurement, proven more than 10,000 times
- Rugged galvanized steel housing for mobile and stationary plants
Direct force measurement
The high-quality force measuring bearings, originally developed for high-precision web tension measurement in manufacturing, are the heart of every FMS belt scale. They measure force directly, without deflection or support on the frame.
- Overload protection up to 20 times the rated force
- Enclosed rolling bearings with additional seals
- Accuracy of ±2 % under real operating conditions
- No exposed cables
How a belt scale works
Throughput = weight × belt speed
FMS belt scales capture both parameters simultaneously and accurately: the weight of the bulk material through direct force measurement, the belt speed through integrated non-contact sensors. The evaluation electronics calculate and display the throughput in real time.
Belt scale product overview
The right scale for every application
BMGZ021 series
For flat belts: compact and mobile
The compact measuring idler for flat conveyor belts is often used in mobile plants.
- Very compact design
- Installation height only 150 mm
- Ideal for mobile crushers and screening plants
- Rugged construction with enclosed components
- Non-contact speed measurement without friction wheel
- Direct force measurement without deflection
- Custom adaptations implemented quickly
BMGZ041 series
For troughed belts: rugged and versatile
The rugged measuring idler for troughed conveyor belts suits stationary and semi-stationary plants.
- Compact design
- Installation height from 180 mm
- Troughing angle 20° to 45°
- Ideal for gravel plants, quarries, loading stations
- Proven FMS force measurement technology
- Integrated non-contact speed measurement
- Universal retrofit possible
BMGZ061 series
Legal-for-trade version: for the highest requirements
The legal-for-trade version with modern evaluation electronics for applications with legal requirements.
- Legal-for-trade version in line with statutory requirements
- Integrated temperature sensor for automatic correction
- Compensation of ambient influences
- For troughed conveyor belts
- Matching evaluation electronics BMGZ750
- Ideal for billing and customs applications
- Highest accuracy and long-term stability
Latest-generation evaluation electronics
All series can be equipped with state-of-the-art evaluation electronics:
All measured values at a glance, clear and intuitive:
- Simple operation and rugged construction for harsh environments
- Ethernet interface for easy system integration
- Integrated web browser: configuration directly from a laptop
- PROFINET interface for full remote control
- Calibration and tare functions
Technical advantages at a glance
Rugged construction
All components enclosed and protected against dust, moisture and mechanical impact
Universal mounting
Adjustable end plates and telescopic side parts for all conveyor belt types and sizes
Long service life
Systems running 10, 15 or even 20 years with regular maintenance
Low maintenance
No exposed cables or friction wheels: minimal maintenance saves resources and cost
Accurate measurement
Accuracy of ±2 % through direct force measurement and non-contact speed sensing
Overload protection
Up to 20 times the rated force, far more rugged than standard load cells (300–500 %)
Quick installation
Simple, universal retrofit on almost any conveyor belt
Flexible integration
Ethernet and PROFINET for easy connection to existing control systems
Applications
Our belt scales are designed for heavy bulk materials.
Materials
- Gravel and sand
- Crushed stone and chippings
- Coal
- Chalk
- Cement
- Construction waste
- Asphalt
- Salt
Applications | stationary
- Gravel and crushed stone plants
- Quarries
- Cement plants
- Transport and loading conveyors
- Loading stations for rail or ship
- Salt mines
Applications | mobile
- Semi-mobile plants in tunnel and road construction
- Mobile crushing and screening plants
- Mobile recycling plants
- Gravel processing
- Sand extraction
Good to know
FMS belt scales are designed specifically for heavy bulk materials. Accurate weighing requires a certain minimum load. These systems are not suitable for very light materials such as compost, wood chips, green waste or food.
Success story: Holcim Schweiz AG
Holcim Schweiz AG chose FMS belt scales for its bulk material measurement. At the Hüntwangen gravel plant alone, nine BMGZ scales are in use, without a single failure since 2015.
When we needed new belt scales and planned to switch from our previous supplier, we looked around the market. In the end we chose FMS. The BMGZ series belt scales proved particularly rugged and resistant to interference. Since commissioning we have not had a single failure.
— Walter Rutschmann, Head of Maintenance, Holcim Schweiz AG
This product ensures maintenance-free operation, which is particularly important to me for saving resources and cost.
— Walter Rutschmann, Head of Maintenance, Holcim Schweiz AG
This success story is no exception: many FMS belt scales have been in continuous use for more than 20 years and prove remarkably durable. The result is a loyal customer base that does not want anything else.
TMX: your partner in Germany
As the authorized FMS Force Measurement Systems partner for Hesse, Rhineland-Palatinate, Saarland and Thuringia, we offer high-quality weighing technology plus comprehensive on-site service, from the first consultation to long-term support.
On-site consulting
Our specialists analyze your requirements and recommend the best system configuration for your application.
Installation and commissioning
Professional mounting and configuration by trained technicians, ready to run right away.
Maintenance
Regular inspections and maintenance contracts secure the long-term availability and accuracy of your system.
Repair
Fast diagnosis and on-site repair: minimum downtime for your production.
Calibration
Accurate calibration for the highest measurement accuracy and compliance with legal requirements.
Support
Competent help with all technical questions, in German and available regionally.
Custom solutions
Standard solutions don't fit your plant? No problem. FMS and TMX Solutions develop custom adaptations together, quickly and without fuss. From custom mounting frames to special interfaces: we'll find a solution.
Technical specifications
Measuring idlers: all series
| Property | Specification |
|---|---|
| Force measurement | LMGZ series, proven more than 10,000 times |
| Overload protection | Up to 20 times the rated force |
| Speed measurement | Non-contact, integrated in the steel housing |
| Housing | Galvanized steel, rugged and weatherproof |
| Sealing | Double-sealed axle, hermetically sealed force measurement |
| Connection | Rugged, sealed connector |
| Accuracy | ±2 % (depending on belt quality and vibration) |
| Maintenance | Maintenance-free, optionally once a year during plant overhaul |
Example configurations
| Application | Series | Throughput | Special features |
|---|---|---|---|
| 130 t/h | Gravel processing (stationary) | BMGZ041 | Belt width 800 mm, troughing 30°, covered plant |
| 100 t/h | Salt mine (stationary) | BMGZ041 | Belt width 650 mm, troughing 15°, site in Spain |
| 120 t/h | Mobile crusher | BMGZ041 | Belt width 650 mm, troughing 20°, incline 15° |
Interfaces and integration
- Ethernet interface as standard
- PROFINET interface for full remote control
- All common field buses available on request
- Integrated web browser for easy configuration
Ready for maximum reliability?
Proven Swiss quality with local service in Germany.
Contact us for a free consultation or a no-obligation quote. Our specialists analyze your requirements and develop the best solution together with you.