Dynamic Rail in Motion

Buy and Sell Goods By Weight
Approved to Indian Railway Trade use. Our MVR MM-7 Series of WIM System can be used to weigh trains for Invoicing of goods by weight, checking and queries of customers inbound goods to your depot. Don’t forget, they may not be weighing on Trade Approved equipment, plus the calibration may not be to a high standard. With the MM- 7 Series WIM, you can rest assured, your weighing results will be correct.

Easy Installation
The load sensors simply bolt onto the existing rails after drilling holes, or can be fused on the rails. There is no cutting of rails, no civil works and no infrastructure work involved whatsoever. The MM-7 WIM can be installed within a day and can even be carried out whilst trains are still running depending on site conditions and traffic.

High Speed or Static Weighing
Trains can be weighed accurately on the MM 7 WIM at high speeds, or the system can be used as a static train weather when loading of goods, for accurate and balanced loadings into each wagon.

No Speed Limits
There is no limit to train speeds over the system, as it can not be damaged due to the contactless installation. The wheels never come into direct contact with the MM 7 WIM.

Fully Automated Train Weighing
Weighing can be activated automatically by the train passing or from the interfaced control system. Manual weighing is also available.

Higher Accuracy Measurements
The MM-7 WIM's load sensors are the most accurate available, with an accuracy of more than 0.1%. R 106 Approval is to within 0.5% of the total train.

Data Production and Output
Date, time, number of axles and wheel load on the left and right side are registered for each train passage. Based on the measured values and on information stored in the analysis computer, data such as train gross, axle pressure and over load is calculated and presented. Data may also be presented in graphical format. After the calculation, a bill of weight (gross) with train data is created. The train weighing data is also stored in a log file on the computer.

Safety of Personnel, Infrastructure and rolling stock

Unbalanced wagons and payload Detection
The MM-7 Series WIM weighs each wheel individually, therefore unbalanced loads and wagons with axle or suspension problems, will be highlighted immediately.

Wheel Flats Detection (Optional)
MM-7 WIM, unlike most systems, can have wheel flats detection built into the system. This will pick up wheel defects before they get serious. Wheel flats can lead to cracking of the wheel and even train derailments if left unchecked.

After Sales Care and Service
We can provide Maintenance packages to suit your requirements ensuring the system is running at peak performance at all times. We can provide assistance remotely, or on-site if required. We offer 24/7 assistance to give you peace of mind, wherever you are.

MM-7 Series RWIM Advantages

  • Avoid overloading which can damage infrastructure and wagons, and un-even loading which can lead to derailments.
  • Ensure any shortfalls of weight on incoming goods are instantly detected and recorded, and also ensure you are not sending more product than you have charged for.
  • Determine the weight of wagons in order to collect revenue from shipping companies.
  • Ensure any shortfalls or leakage of goods are detected immediately upon arrival at the depot.
  • For adjustment and control in batching and volume control applications.
  • For balancing purposes of the loco and wagons manufacturer and repair workshops, in order to achieve optimum wheel to track traction with equal weight distribution.

Technical Specifications (Slow Speed WIM)

Capacity User Selectable
Stationary Accuracy ±0.05% FSR* (depends on field conditions, installation, structure and load cells also)
In-Motion Accuracy with respect to Speed ±1-3% FSR up to speed of 20 km/hr (depends on field conditions, installation, structure and loadcells also)
Type of In motion scale Load cell based permanent In-motion scale.
Operational Temperature 0˚C to 50˚C
Power supply AC single Phase 230V, 50 Hz

Load Cells

MVR LC’S are double ended shear beam load cell ideally suited for Truck, track, onboard weighing applications. Its construction of high alloy tool steel provides optimum protection under impact loading & adverse conditions. The cell is environmentally protected with waterproof seal and is Electro less nickel plated to assure resistance against corrosion.

Performance Specification
Standard Capacity 10,15,20,22.5,25 Tf
Excitation Voltage 10 VDC- Maximum 15 VDC
Nominal Output 2.0 m V/ V
Non - Linearity < ±0.1% FSO (Full Scale Output)
Hysteresis < ±0.15% FSO
Non-Repeatability < ±0.1% FSO
Creep (30 minutes) < ±0.02% FSO
Zero Balance ±1.0% FSO
Input Resistance 770 ± 15 Ohms
Output Resistance 700 ± 5 Ohms
Insulation Resistance (50 VDC) > 1000 Mega Ohms
Certification CE Certified
Safe Overload of Rated Capacity 150%
Ultimate Overload of Rated Capacity 300%
Temp. Compensated Range 0-500C
Temperature Effect on Output < 0.01% FSO/ 0C
Temperature Effect on Zero < 0.01% FSO/ 0C
Deflection < 0.4 mm at FSO
Finish & Construction Electroless Nickel Plated Tool Steel

Surge Protector / Junction Box

MVR Technology has introduced a Lightning protection Junction box for Analog & Digital load cell with better protection against lightning and high voltage Surge. Special components to enhance protection against Lightning Strikes have been incorporated. This will enhance performance, reduce down time and reduce field calls for WIM installations using DESB Load cells..


Power Supply 12 - 24 Volts DC
Supply Protection Reverse Polarity Protected
Output PNP or NPN / NO or NC
Output Indications Through LEDs
Channel Indication LED indication for each channel
Response Time On to Off : 10 - 15 m.sec. Off to On : 50 - 100 m.sec
No of Beams 4, 6, 8, 10 , 16, 20, 16, 24, 32, 40, 48, 56, 64
Beam bypass Provided in hand/body protection models
Protected Heights 90 - 2000 mm
Pitch offered 11, 20, 30,40, 50, 90mm
Adjustable Range Up to 3 meters (Higher range up to 40 meters available)
Standard Cable length 5 meters for emitter, 3 meters for receiver
Operating Temperature Up to 55 Degrees centigrade
Cross Section 36 x 42 mm
Electrical Connections Plug in Connector for Emitter & Receiver
Applicable to Directly work with PLCs / Controllers
Protections Output short circuit protected
Vibration Resistance Amplitude: 0.75 mm (p) Freq : 10 - 55 Hzs, Rate : 1 Octave / min
Operating Light 500 Lux (max.) when source is places opposite to receiver, > 3000 lux when source placed at an angle of 20 degrees


  • Optimal pricing
  • Quick and trouble free installation
  • High vehicle throughput
  • Maximize operational Productivity and cost savings
  • Automatic vehicle counter and immediate indication of the vehicle overload
  • Dust and waterproof wirings for easy and reliable connection
  • Gross weight, axle weights, numbers of axles can be recorded along with average speed
  • Data records can be stored for future use or can be sent via LAN or Internet to the server