With a dynamometer or force gauge you check tensile forces, tensioning forces and lifting loads, or test components for strength. We calibrate digital and analogue force gauges in tension and compression up to 500 kN, with the results in the unit shown on your gauge.
A force gauge that is also used as a scale, with a reading in kg or tonnes, is calibrated in the same way. The certificate then states the conversion using the local gravitational acceleration. For crane scales calibrated with weights, read more at crane scale calibration.
Many dynamometers are intended for tension only. Hand-held force gauges with interchangeable attachments often measure both tension and compression. Because a gauge can behave differently in each direction, we calibrate each direction you use separately. State in your request which direction you need; that way you do not pay for measurements you will not use.
With analogue gauges we read the pointer against the scale and also check the return to zero. With digital gauges we check the resolution, the stability of the reading and functions such as peak hold, insofar as they are relevant to the measurement.
Dynamometers are often used to determine lifting loads, to adjust guy lines and to check tensioning forces. A gauge that reads too low gives a false sense of security. We therefore recommend annual calibration, and immediate recalibration after a shock load or a fall. After calibration you know what deviation to allow for in practice.
Force is measured in newtons (N) or kilonewtons (kN). Many dynamometers and tension force gauges, however, display the value in kg or tonnes, because the user wants to know what load is suspended. The conversion requires the gravitational acceleration. We use the local value of g = 9.8129296 m/s². A force of 10 kN thus corresponds to approximately 1,019 kg.
Gravitational acceleration varies slightly from place to place on Earth. Within the Netherlands that difference is negligible for most applications. If your gauge is used elsewhere in the world and accuracy is critical, please mention this in your request; the certificate always states which value of g was used.
When requesting a quote, choose the range that matches the maximum force of your gauge. A 5-tonne dynamometer (approximately 49 kN) therefore falls into the range up to 50 kN. We prefer to calibrate across the full range, from approximately 10 or 20 per cent up to the maximum force. If you only use the gauge in part of its range, we can tailor the measuring points accordingly.
A dynamometer that has been used close to its maximum for years deserves extra attention. Fatigue of the measuring element can cause the reading to drift slowly. By comparing the results of successive certificates, you will spot this in time.
Select the direction and the measuring range of your force gauge.
Price on request · state make, type and requirements (display, number of steps, class) in the remarks of your request.
Yes. We report in N, kN, kg or t. For kg and tonnes we convert the force using the local gravitational acceleration, which is stated on the certificate.
Yes. We calibrate analogue ring and spring dynamometers by reading the pointer at each load step. A damaged or sticking pointer is reported to you first, before we start measuring.
With many digital gauges, yes, via a calibration function in the gauge. After consulting you, we adjust the gauge and measure again; both results are shown on the certificate.
There is usually no statutory calibration requirement for dynamometers, but employers must ensure that work equipment is safe. Clients, inspection bodies and your own quality system therefore often require a valid certificate.
Book your calibration online via the customer portal or request a quote. We collect your force measuring instruments and calibrate them on our tensile and compression benches in Elspeet.