Capable and Versatile


The LS-R740SS performs high-sensitivity leak testing on microvolume parts. The parts to be tested are placed in a fixture and the inside of the parts are pressurized to measure the pressure change generated by the leak. 

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

0,1 Pa

± 999,9Pa

± 2.5% of the reading ± 1Pa 、 50Pa or less ± 2Pa

5 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

Port size



USB port

Fixed length I / F

ID / F fixed length

Fixed length T / F


Test data

Test parameter

Hasta ± 999,9 Pa

32 channels (0 to 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.

Adjustment using the installed pilot pressure filter regulator: Range: 400 a 700 kPa

6mm one-touch seal: pilot pressure source, test pressure source

Special Union: port of LABOR and MASTER  

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 configuration screens