Capable and Versatile


The LS-R740SH is a differential pressure air leak tester that performs highly sensitive leak testing in super high pressure conditions.

Up to 16 MPa can be applied for leak testing.

Intuitive and easy-to-navigate interface with simple menu configuration.

Test pressure and differential pressure waveform display.

The influence of the noise generated during the test on the workpiece can be compensated, reducing the test time.

Three selectable languages: English, Chinese, Japanese. 

USB port for easy management of test data.

Closest location of the sensor unit to the target capsule.

Product features

General specifications



Display range


Sensor test pressure

1 Pa

± 9.999kPa (guaranteed accuracy range ± 10kPa)

± 5% of the reading ± 1Pa (500Pa or less: ± 2Pa)

20 mPa


Test accuracy


Equivalent internal volume

kPa, MPa (kg / cm2, psi, bar, etc.)

Pa, kPa, mL / s, mL / min, L / min, Pa ・ m3 / s, E-3 Pa ・ m3 / s, Pa / s, Pa / min, * Pa / s, * Pa / min (mmH2O , mmHg, inH2O, etc.)

mL, L (in3, ft3)

Leakage screen

4 digits, sampling rate: 10 times / seg.

Leakage limit

No #of channels


Power supply

Ambient temperature



Pressure source

Pilot pressure

Connection port



USB port

Fixed length I / F

ID / F fixed length

Fixed length T / F


Test data

Test parameter

Up to ± 999,9 Pa

32 channels (0 a 31) 

999,9 seconds (resolution 0,1 seconds)

AC100 ~ 240V ± 10%, 50 / 60Hz, 70VA max.

5 to 45 ℃

80% relative humidity or less / no dew condensation

Controller: approx. 2,6 kg

Pneumatic unit: approx. 15 kilograms

Clean, dry air. The source pressure must be sufficiently higher than the test pressure.

Clean, dry air, regulated between 500 to 700 kPa

Pilot pressure: Rc1 / 4

Test pressure: Swagelok Ф6 mm (WORK & MASTER port)

SH-2A 144 MHz, DRAM 8 MB

Test parameters and test results are transmitted.

Only test results are transmitted

Special formats

Trial, leakage, test pressure, channel number, timers, etc.

Test the parameters of all configurtion screens