Strain Gages

Explain the different purposes of using 120 Ω and 350 Ω.

What factors should I consider when selecting the most suitable strain gage?

What are some of the applications for strain gages that feature long gage lengths?

How should I choose lead wires?

Can I purchase customized strain gages?

I want to measure strain on a PCB. Tell me about the minimum items required for measurements.

What’s the difference between models with codes like -C1, -D9, and -D16?

What do the numbers like -11 and -16 at the end of the model name mean?

I’ve never used a strain gage before. How should I select one?

I’m considering using the KFGS-1.5-120-C20-11 strain gage to measure bolt axial force from -40 °C to 120 °C. Can I use the EP-340 adhesive for measurements in the temperature range from -55 °C to 150 °C?

Since the strain gage is soaked in water (only during the experiment), I’m considering applying a waterproof coating. Tell me about a coating material that doesn’t influence the rigidity, since I want to measure strain in a part with low rigidity.

Do you have a strain gage with dimensions small enough to be bonded to a chip capacitor?

Why don’t they use more even numbers such as 100 Ω or 200 Ω?

How do strain gages work?

What are the advantages of using strain gages?

How do I form bridges (Wheatstone bridges)?

What is a 2-wire system and what are effects from the lead wires?

What is a 3-wire system and what are effects from the lead wires?

What are self-temperature-compensation gages?

What is the coefficient of linear expansion?

What is the difference between encapsulated strain gages and other types, such as foil strain gages?

Please show me the formula for the rosette analysis.

When attaching the strain gage, will the deviation in the angle of attachment cause errors in measurement results? Please show me how to calculate such errors and reference values.

Does the strain gage have restrictions on frequency characteristics?

Resistance value has been displayed on the package of the gage. What is the standard deviation?

Do you issue an SDS Safety Data Sheet (formerly called an MSDS Material Safety Data Sheet)?

What is the appropriate excitation voltage to apply to a 120 Ω or 350 Ω strain gage?

I want to bond a KFGS gage to a pipe with less than φ5 in diameter in the horizontal direction for measurement. Please tell me the model of the KFGS strain gage and the approximate outside diameter needed to bond the gage. Also, what precautions should I take when bonded to a round surface.

What is the shelf life of adhesives and how should they be stored?

To attach strain gages, can I use adhesives other than the recommended?

What are some problems I might encounter when using gages with long lead wires?

I don’t know whether the strain working on the part is tensile or bending. How can I determine this?

Regarding the linear expansion coefficient, if I measure the strain of copper with the strain gage for normal steel (KFGS-1-120-C1-11-L3M3R), can this be compensated for? If yes, what’s the compensation formula?