How Do Scales at Truck Weigh Stations Work?
Truck weigh stations are a frequent sight along all major roadways across Canada. They play a crucial role in checking vehicular weights and are equipped with truck scales to determine a truck’s weight. To properly use a weigh station, you need to understand how they work. We can help you out with this.
Ancoma Scales has been in business since 1977. We provide various products and maintenance services including:
- Truck scales
- Bench scales
- Floor scales
- Weight indicators
We can apply our services to almost any make or model of truck weight scale in Alberta and Edmonton.
In this blog post, our expert technicians discuss how truck weigh stations work.
What Are Weigh Stations?
They are designated locations, mostly stationed directly off the highways, where commercial vehicle weights are inspected. Once a truck is verified, it will be permitted to exit and continue with the commute.
How Truck Scales Work
Weigh stations work because of the scales that weigh the truck axles. Certain scales are single-axle while others are multi-axle and use one of the three common measurement systems:
- Bending plates - They are metal platforms that have strain gauges attached to them which emit varying currents to the junction box when the plates are compressed. The current emitted from each plate is calculated to find the ultimate weight of the truck.
- Load cell systems - They are composed of a material such as steel or concrete, with a strain gauge (sensitized) implanted inside. The strain gauge will emit a small amount of current as it is pressed by the weight of the vehicle. A junction box is used to read the amount of current that flows through the wires, which can later be referred to calculate the exact weight of the truck in question.
- Piezoelectric - These are sensors that are planted in a conductive material, which alters the amount of electrical current sent to the sensors while applying pressure. These scales need the data from each sensor to be calculated for finding the total weight.
Kinds of Truck Scales
Trucks can be weighed in various ways at weigh stations. Certain modern systems enable truckers to exit and get back on the road easily, reducing staffing needs of government agencies at weigh stations. Different types of truck scales are:
- One-axle – These require trucks to slowly drive over a single scale, stopping each time for measurements whenever a wheel is placed over a scale.
- One-stop – In this type, several scales will be strategically placed for a trucker to position their vehicle just once for all the necessary measurements to be noted.
- Weigh-in-motion – This enables drivers to run over a sensor array, which notes the truck’s weight. Some weigh-in-motion systems have been positioned on highways, removing the need to lose valuable driving time during operations.
Let Ancoma Scales Help
You can always count on us if you are concerned about finding quality truck scales and the support needed to maintain them. We have the following qualifications:
- Membership in The Alberta Road Builders Association
- Membership in the Alberta Sand and Gravel Association
- Measurement Canada accredited
- A member of Avetta
- A part of ISNetworld
- A part of Browz
- COR certified
For information on the price of truck scales, read our blog post - WHAT IMPACTS THE PRICE OF A TRUCK SCALE?
Call us to learn more about our services.