Additional information regarding your calibration request
In addition to your selection criteria, we need further details in order to process your requested calibration. Please feel free to include this information in your inquiry. We will then assess the feasibility and, if necessary, advise you on possible options.
Sensor data
Sensor data or calibration data refers to the specified parameters required for planning and performing a calibration. These include, in particular, the sensor’s nominal load (as indicated on the nameplate) and the load ranges that are tested during the calibration. This information serves to clearly identify the calibration object and ensures the traceability of the measurement.
Minimum load
The minimum load refers to the smallest force (excluding zero) applied during a calibration. It marks the lower limit of the measurement range and is important for evaluating the force transducer’s performance even at low loads. By default, this value is set to 10% of the maximum calibration load, unless otherwise specified by the customer.
Measurement uncertainty
Measurement uncertainty describes the quality of a measurement result. It indicates the range within which the true value of the measured quantity is expected to lie with a defined probability. A low measurement uncertainty indicates particularly high measurement quality. The measurement uncertainty of a calibration is never lower than the measurement uncertainty of the measuring equipment on which the calibration was performed.
Class
Standards such as DIN EN ISO 376 or ASTM E74 specify a class in addition to the measurement uncertainty. This class is a prerequisite for other calibration procedures to be able to use this transducer as a reference. The method for determining the class is specified by the standard.
In DIN EN ISO 376, for example, the class describes compliance with limit values.
Force reference standard machine 100 N-K-BNME
The core of the reference standard is a stainless and non-magnetizable mass stack, partly made of an aluminum alloy and partly of a special steel. partly made of a special steel. The lightweight load frame lightweight construction is made of an aluminum alloy. The machine frame has two cross beams, one each for tension force measurements and one for compressive force measurements. For environmental conditions, the measuring equipment is fully enclosed. the measuring device is completely enclosed. The measuring device is equipped with a force shunt control. Force shunts are indicated by yellow lights and, in the case of automatic measurement automatic measurement, the measured value is marked with an additional value is marked by an additional character in the measured value file.
Key Facts
- Measured quantity: tension and compressive force
- Operating principle: Dead load in the range from 0.5 N to 100 N
- Accredited measuring ranges: 0.5 N to 100 N
- Expanded relative measurement uncertainty: 1-10-4 in the range 0.5 N to 100 N
Force reference standard machine 25 kN-K-BNME
The reference standard machine consists of a base frame and an overhead lever lever at the top, which is mounted in a strain-controlled manner. The short lever arm is 40mm and the long lever arm is variable, as the mass (running weight) can be positioned in the range of ± 1000 mm by means of a precision spindle. Positioning the mass in positive direction generates compressive forces, positioning in negative direction generates tension forces.
Key Facts
- Measured quantity: tension and compressive force
- Operating principle: Running weight on lever arm, elastic strain-controlled bearing
- Accredited measuring ranges: 1 kN to 25 kN (at any load level)
- Expanded relative measurement uncertainty: 2·10-4
Force reference standard machine 100 kN-K-BNME
The reference standard machine has two measuring ranges: The direct loading part consists of a mass stack made of stainless steel (19 times 250 N masses, once 150 N mass) and a load frame combined of aluminum and steel (100 N) and a combined tension-compression load beam. The transmission section consists of a 1:20 lever mounted via strain-controlled joints and a likewise combined tension-compression traverse.
Key Facts
- Measured quantity: tension and compressive force
- Operating principle: Dead load in the range from 100 N to 5000 N Leverage ratio from 5 kN to 100 kN
- Accredited measuring ranges: 100 N to 5000 N 5 kN to 100 kN
- Expanded relative measurement uncertainty: 1·10-4 im Bereich von 100 N bis 5000 N 1·10-4 im Bereich von 5 kN bis 100 kN
Force reference standard machine 1.2 MN-K-BNME
The reference standard machine consists of a two-column frame with a hydraulic, sealed cylinder at the top and a four-column load frame. A double reference force transducer system is located between the upper crosshead of the load frame and the piston of the cylinder. The design with load frame allows calibration in the direction of tension force and compressive force, although the reference force transducers are always subjected to a compressive force.
Key Facts
- Measured quantity: tension and compressive force
- Operating principle: Hydraulic with upright cylinder, spindle pump and two power references in series.
- Accredited measuring ranges: 20 kN to 1200 kN (at any load level)
- Expanded relative measurement uncertainty: 2-10-4 in the range from 20 kN to 1200 kN
Force reference standard machine 10 MN-K-BNME
The reference standard machine consists of a four-column frame with a sealed hydraulic cylinder at the top and a two-column load frame. A double reference force transducer system is located between the upper crosshead of the load frame and the piston of the cylinder.
Key Facts
- Measured quantity: Tension and compressive force
- Operating principle: Hydraulic with upright cylinder pressure grading by means of spindle pump, two force references connected in series
- Accredited measuring ranges: 200 kN to 10 MN (at any load level)
- Expanded relative measurement uncertainty: 2 * 10-4
Installation Situation
Compressive force installation situation of the 10 MN-K-BNME
You can choose between two different installation situations:
Tension force installation situation of the 10 MN-K-BNME
You can choose between three different installation situations:
| Variant A: | Variant B: | Variant C: |
| Installation situation for tension rods with spherical shell / ball nut | Installation situation with laboratory own tension rods | Installation situation with laboratory own tension rods and threaded sleeves |
| ≤ 2 MN ≤ 4 MN ≤ 6 MN ≤ 10 MN | ≤ 2 MN (M90x4) ≤ 4 MN (M125x4) ≤ 6 MN (M160x6) ≤ 10 MN (M200x6) | ≤ 2 MN (M90x4) ≤ 4 MN (M125x4) |
Adaptation Recommendation
For the calibration of force transducers, load cells, or force measurement systems with high rated loads, suitable adapters are required. However, manufacturing these adapters is complex and expensive.
The GTM calibration laboratory offers a variety of standardized adapter components for calibrations up to 10 MN. As a customer, you benefit from cost savings in the five-figure range.
Please check whether your calibration object requires an adapter. Downloads are available in the previous section. There you can see the possible installation scenarios for the force transducers. With the appropriate software (e.g., Adobe Acrobat Reader XI), you can also extract dimensions from the drawings.
