Capable and Versatile


The LS‑1866 is not only compact and lightweight, but also a simple and easy to use air leak tester. Compact size body with the latest functions, such as master preset, multi-channel and  mL / min leak rate display, etc.

● Equipped with a highly sensitive / high pressure resistant DP sensor as well as a heat-resistant air controlled valve.

●  The basic circuit, a high performance and exceptionally safe intelligent air circuit, performs checks of valve operation and sensor sensitivity during each test.

● The master presetting function and the NR mode function enable improved detection capability and reduced test times.

●  Channel functions are also available, allowing compatibility with many types of workpieces.


Prest Master

It extracts the actual leakage from drift or noise factors affecting the measurement. This function improves the production ratio and shortens the cycle time.

Clamp output

DC24V is emitted from the beginning to the end of the test. The use of this signal allows control of the clamp template by the air leak tester.


Leakage calibration

The calibration port, located on the front panel of the air leak tester, allows easy verification of the leak rate by installing Leak Maste, etc.

Quick fixing bracket

Installation or removal of the air leak tester can be easily accomplished with only two threads.


Product features

General specifications

Differential pressure

Minimum display

Display range

Excess pressure in the sensors

0,1 Pa

± 999Pa

5 mPa

Leakage volume display range

Alarm setting range

Timer setting range

Number of channels

Power supply

Test pressure source

Pilot pressure source

Transmission function

Ambient temperature / humidity

0,00 ~ ± 999 ml / min (Automatic range)

0 ~ ± 999

0 ~ 999.8s (Infinite setting)


AC100 ~ 240V ± 10%, 50 / 60Hz, 70VAmax

It uses clean air. The original pressure must be sufficiently higher than the test pressure.

Apply 400 to 700 kPa of clean air.

RS-232C serial port 

5 a 40 ° C / 80% RH or less, yet no dew condensation.