Strain Measurement

AirLogger™ performs strain measurement using strain gauges.
Its integrated structure with built-in bridges and amplifiers realizes simple measurement procedures.
It also reduces man-hours for measurement preparations by adopting a wireless design.

Applicable Products Comparison Table

Product Name
WM2000SA 120Ω/350Ω
WM2000SA Full bridge
Ch/Max ch 1ch/100ch
Measurement method One-active / two-active gauge methods Four-active gauge methods
Measurement range ±20000 µST
Measurement interval 0.1s~10min
Balance adjustment range ±8000 µST
Min. measurement resolution 0.1 µST
Size 54.5mm, 45mm, 17.5mm
Weight 36g
Communication distance 30m
Battery Special battery *1
Battery continuous operation time 14 days
Operating temperature range -30~100°C
Lost Data Recovery Function

* The max. number of connections can be used when the sampling period is 1 s or longer.
*1 It is also possible to operate the applicable products without using a dedicated battery by using an external power supply cable.
  See optional external power supply.


Strain Measurement

Strain measurement is used to check various phenomena as any object may be distorted when force or energy is applied.
The measurement method using a strain gauge is done by attaching a strain gauge, of which resistance value changes depending on the change of shape, with an adhesive or the like,
while minute resistance changes are extracted and detected by a Wheatstone bridge.

Ultra-Compact and Lightweight

The bridge resistance, amplifier, recorder, and radio are all built into the measurement unit.
The drive power supply is merely a small battery.
With its compact and lightweight structure, it can be set up near the measurement target,
eliminating the trouble to route the huge amount of wiring required by the conventional method.

Wireless measurement of moving parts eliminates the need for measurement jigs

Wireless technology allows evaluation of the actual machine without having to use slip rings or measurement jigs.

The wireless design significantly reduces man-hours for wiring work

AirLogger™ can shorten the evaluation period because it reduces man-hours required for measurement.
Reduction in wiring man-hours will relieve the hassle of routing cables.

Enables measurement from inside a metal housing

If there is a gasket or a window, it is possible to measure by wireless communication even in a temperature test chamber.
With the WM2000 series, you can check the radio wave condition on the software.

Capable of Real-Time Simultaneous Measurement at Multiple Measurement Points

The measurement units can be synchronized
by the synchronization signals from the PC communication unit.
Synchronous measurement of up to 100 units is possible.
The measured data can be checked in real time with standard software.
Click here for software details.

PC Communication Unit Max. 100 units

Filtering Data after Measurement

You can create a filtered file from the data measured by standard software.
With the standard software, you may use the low-pass filter function to remove fine noise and data with DC components removed using a high-pass filter.

Resampling after Measurement

You may create a file with less data by thinning out/resampling the measured data.
When outputting the measured data, of which were originally finely measured, in a csv file, you can roughen the sample to so that the data can be lessened when extracted.
This method can be applied when performing envelope detection by using a conversion formula at the time of measurement, and by using a filter function to thin out data after measurement.

Delivering Wireless Measurement that “Connects”

Memory data is stored using the internal memory of the measurement unit and has a recovery function.
The strength of the transmitted and received radio waves varies significantly depending on the way the measurement unit and the PC communication unit are installed.
Please see “How to improve the radio wave environment”.
Click here for inquiries

Ultra-compact and Low Noise, with No Need for an AC Power Supply

Since it is battery operated, it has the advantage of being less affected by power supply noise, which is difficult to remove.
It can be used in a high-voltage environment by installing the housing of the measurement unit with insulation.
(However, extreme care is required under high voltage since it cannot withstand high voltage between channels of the same measurement unit.)


Waterproofness/Dustproof performance is equivalent to IEC standard IP54 compliant. (The performance shown is the use of a waterproof attachment)

Measurement File Format

Measurement data can be output as a csv file.