Qlar Load Cells

High-Performance Sensors for Accurate Weighing

At the heart of every weighing system lies the load cell — the vital sensor that transforms physical force into precise signals. Qlar (formerly Schenck Process) load cells offer unmatched stability, accuracy, and durability across industrial weighing applications.

 

Comprehensive Range for Every Scale

• Ring Torsion Load Cells (RT series, RTB, RTN, etc.) — From 0.25 t up to 470 t, these circular strain gauge designs deliver minimal deformation and rapid response. shop.qlar.com

• Shear Beam Load Cells — Ideal for smaller scales and platform weighers; capacities range from a few kilograms to several hundred kilograms. shop.qlar.com

• Other Weighing Sensors — Qlar’s full sensor family includes weighbeams, weighdiscs, measuring eyes, and more, covering capacities from 0.1 t to 600 t. shop.qlar.com

 

Key Strengths & Capabilities

• Ultra-high sensitivity & repeatability — Stable performance even in harsh environments, with minimal drift over time. shop.qlar.com

• Resilience to lateral forces — Designed to minimize measurement errors from off-axis loads or vibrations. shop.qlar.com

• Integrated overvoltage protection — Safeguards against electrical surges and ensures longevity. shop.qlar.com

• Modular plug-in cable options — Quick replacement and flexible connectivity for easier maintenance. shop.qlar.com

• Explosion-proof / IECex / ATEX-rated variants available — Certified for use in hazardous zones (Zone 1/21 or 2/22) where required.

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High precision, easy maintenance

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Designed with extreme conditions in mind
Hopper scales in the burdening area have to retain their reliability and accuracy even under the most extreme of conditions. The high levels of dirt produced during the process mustn’t impact negatively on their function or ease of maintenance.

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Qlar hopper scales have been designed for just these applications. Since they are equipped with high-precision load cells (RTN) and secured via stops in our compact mounts, neither dirt nor material influences can harm them.

The dampening effect of the elastomer mount reduces building vibrations and the dynamic loads of the discharge feeders. The bumber checks can be easily checked and set which greatly simplifies and speeds up all maintenance work.

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Benefits
Continuously reliable results, even under extreme conditions. Bumber checks are easy to check and set. All maintenance work becomes much simpler and faster and servicing costs are cut.

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Applications
Qlar hopper scales are used in burdening areas for the production of pig iron.

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1. Test equipment

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Safe, mobile, adjustable

The clever mobile solution
If processes are to be carried out with accuracy, the hopper scales must be adjusted with precision. But structural circumstances mean that the burden hoppers cannot always be checked for accuracy or adjusted by fitting or adding external weights. Or if this is possible, it is simply too complex a process.
As an alternative Qlar can supply mobile check wear to provide a smart solution to this task.

The mobile check wear consists of a two-section frame with an integrated hydraulic cylinder and master load cell. This unit is supplied pre-assembled by Qlar and is suspended between the base of the hopper and the foundation using terminal links.

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Reliability through correct adjustment
Once the hydraulic pressure has been applied, the test equipment produces a tractive force between the hopper and foundation, a proportion of which is forwarded to the scales’ load cell as the resultant weight. The result is displayed on the DISOMAT® Tersus.

A comparison of the two evaluation electronics provides information about correct adjustment or shunt forces on the hopper scales if required.

Mobile or stationary

Depending on size and usage, Qlar check wear can be fitted permanently to the hopper or used as a mobile unit for several hoppers.

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2. Blast furnace top scales

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Robust, reliable, durable

Highly resistant scales
Blast furnace top scales are subject to the most extreme of ambient conditions. The weighing systems used must be designed to withstand a lot, such as the lifting forces resulting from the pressure of the blast furnace top gases (approx. 2bar).

Qlar blast furnace top scales are designed for just these conditions.
Nowadays we recommend that customers screw blast furnace top scales directly onto SensiQ weighbeams WB for such applications.

The benefits of this application are obvious: the scales contain no parts requiring adjustment (e.g. guides or spring elements). They are pleasantly simple to install and maintain.

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Other benefits
Qlar blast top furnace scales are very robust and are characterised by high reliability and outstanding durability. A benefit that not only satisfies the very particular requirements of this type of scales, but also makes economic sense.​