Shandong Leheng Instrument Co., Ltd. is one of the most reliable manufacturers and suppliers of truck scales load cells in China. We ware committed to providing high quality customized products with low price. Please feel free to wholesale cheap truck scales load cells in stock here from our factory.
The weighing sensor of a truck scale (also known as a weighing sensor) is the core force electric conversion component of an electronic truck scale, responsible for converting the physical weight of the loaded vehicle into measurable electrical signals. The product is widely used in large tonnage static and dynamic weighing systems for highway toll collection, port and dock cargo weighing, industrial and mining enterprise material measurement, warehousing and logistics, and railway freight yards.
Products Description
This product is a high-precision double shear beam weighing sensor designed specifically for electronic car scales, track scales, and large industrial weighing systems. The range covers 10t to 40t, with an accuracy level of OIML C3. It is made of alloy steel material and treated with nickel plating for corrosion resistance, with a protection level of IP67 to IP68, fully meeting the legal measurement requirements of trade settlement weighing instruments.
It can directly replace mainstream models such as ZEMIC HM9B and METTLER TOLEDO SBD, with installation dimensions and electrical parameters fully compatible. Replacement does not require modification of the existing scale structure.
We serve a global market, exporting to over 50 countries across North America, South America, the EU, and Southeast Asia. Whether you require standard models or customized solutions, our OEM/ODM capabilities allow us to tailor specifications to your exact needs. With a standard delivery time of just 15 days and full technical support, Leheng is your trusted partner for high-quality weighbridge sensors and industrial weighing solutions.
Working Principle
Its working principle is based on resistance strain measurement technology: after the vehicle drives on the weighing platform, the elastic body of the sensor undergoes small deformation under the load, and the resistance strain gauge attached to its surface synchronously deforms, causing a change in resistance value. It is converted into a linear voltage signal proportional to the weight through a Wheatstone bridge circuit and output for processing and display by the weighing instrument.
Be used in a wide range of industries.
Truck scale for concrete batching plant
Unmanned truck scale for construction site
Unmanned truck scale for customs checkpoint
Product Specifications
|
Industry |
Specific Application |
Required Capacity Range |
|
Logistics & Freight |
Highway weigh stations, distribution center inbound/outbound |
30t - 40t |
|
Mining & Quarrying |
Raw material intake, ore truck weighing |
40t |
|
Agriculture |
Grain silos, livestock weighing, harvest collection |
20t - 30t |
Product Specification
|
Parameter Item |
Specification Range |
|
Rated Capacity |
10t, 15t, 20t, 25t, 30t, 40t |
|
Accuracy Class |
C3 |
|
Sensitivity |
2.0±0.005 mV/V |
|
Non‑linearity |
≤0.02% F.S |
|
Hysteresis |
≤0.02% F.S |
|
Repeatability |
≤0.01% F.S |
|
Creep (30 min) |
≤0.02% F.S |
|
Compensated Temperature Range |
-10～+40℃ |
|
Operating Temperature Range |
-30～+70℃ |
|
Temperature Effect Span |
0.002% F.S/℃ |
|
Temperature Effect Zero |
0.002% F.S/℃ |
|
Zero Output |
±1% F.S |
|
Input Impedance |
750±5Ω |
|
Output Impedance |
700±2Ω |
|
Insulation Resistance |
≥5000MΩ (50VDC) |
|
Safe Overload |
150% F.S |
|
Ultimate Overload |
200% F.S |
|
Excitation Voltage |
5～12V(DC) |
|
Protection Class |
IP67～IP68 (adhesive bonding/laser welding) |
|
Material |
Alloy steel (Nickel‑plated surface) |
|
Tightening Torque (N.m) |
1100 |
|
Equivalent Product |
ZEMIC (HM9B) METTLER TOLEDO (SBD) |
Product drawing
FAQ
Q1. Can I get samples?
The sample is free. So you just pay off the cost of delivery. And when you confirmed the order, we will return it to you.
Q2. How can we guarantee quality?
Always a pre-production sample before mass production; Always final Inspection before shipment.
Q3. How long will you prepare the goods?
According clients' order quantity, the time of stock up will have some change. Usually we can prepare the goods within 15 days.
Q4. Why should you buy from us not from other suppliers?
After 17 years of research and development accumulation, we have become experts in the production of weighing sensors. With reliable product quality and comprehensive customer service, we have won the trust and cooperation of customers in North America, South America, the European Union, Southeast Asia and other regions.
Q5. What services can we provide?
Accepted Delivery Terms: FOB, CIF, EXW, CIP, DDP, DDU;
Accepted Payment Currency: USD, EUR, JPY, CAD, AUD, HKD, GBP, CNY, CHF;
Accepted Payment Type: T/T, L/C, PayPal, Western Union.
Q6: Why do car scales need 4 or 6 sensors?
The number of sensors on the car scale is consistent with the number of support points on the scale body. The general standard truck scale uses four sensors corresponding to four legs; Large tonnage or ultra long weighing platforms (such as 60 tons or more, 18 meters or more) use 6 sensors to reduce the load borne by each sensor, improve overall weighing accuracy and safety.
Q7: What is the difference between sensor protection levels IP67 and IP68?
IP67: Completely dustproof, can be immersed in water for a short period of time (1m underwater, 30 minutes).
IP68: Completely dustproof, can be immersed in water for a long time (depth and time specified by the manufacturer).
Q8: How to calculate the sensor range?
Common calculation formula: C=K ₀ · K ₁ · K ₂ · K ∝ · (Wmax+W)/N
Among Which
C - Rated range of a single sensor
W max - maximum weighing value of the truck scale
W - Self weight of the scale body
N - Number of sensors
K ₀ - Insurance coefficient (1.2-1.3)
K ₁ - Impact coefficient (dynamic balance needs to be considered)
K ₂ - Center of gravity offset coefficient
K ∝ - Wind pressure coefficient
For example, a 30t truck scale with a self weight of 1.9t and 4 sensors, calculated based on a typical coefficient, results in C ≈ 12.36t. Therefore, a 15t range sensor is selected.
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