Controlling Multiple Air Leak Testers
The controller controls up to 8 pneumatic circuit units.
The tester can control the pneumatic circuits simultaneously or individually.
The compact pneumatic circuit units allows saving space which reduces facility cost.
System simple wiring
All the I/O wiring between LS-1881 and PLC can be done in the control panel.
The I/O unit, the controller and all the pneumatic circuits can be easily connected to each other with the dedicated cables.
Also there is a plan to connect it to fieldbus (DeviceNet), which helps simplify wiring.
Four Languages selectable
Four languages can be selected from Japanese, English, Chinese and Korean.
Please select one, depending on where the machine is used.
Memory card comes as standard, which eases data management.
USB Memory is included as standard.
LS-1881 stores up to 1000 test logs per pneumatic circuit.
The test logs stored in USB memory can be viewed or used for data analysis on a PC.
The test parameters can be stored in USB memory as well.
Loaded with the features to improve test efficiency and test accuracy.
Equipped with High performance AD converter and Differential Pressure.
Provides stable differential pressure measurement with the resolution of 0.1 Pa.
Equipped with High performance AD converter and Differential Pressure.
Provides stable differential pressure measurement with the resolution of 0.1 Pa.
Sophisticate Running-Average Compensation Feature
Compensates the error, which achieves test time reduction and eases management.
NR Mode
Mode to retest the part that fell in the “Uncertain Judgment Area” when the noises in test results are inevitable.
Multiple Channels
Each station holds 32 channels, which is good for multiple tested parts.
Self-Check Features
Checks sensor sensitivity and valve performance at each test as well as electrical performance.
Calibration Port
Equipped with the calibration ports ease inspection and calibration.
K(Ve) Calibration Feature
Using a Leak Master, LS-1881can measure Equivalent internal volume, K(Ve), which is used to convert measured differential pressure into a flow rate.
Automatic control of test pressure
Different test pressure and quick charge can be set for each channel by using an E/P regulator.
Pressurization time can be reduced depending on the test conditions.
LS-1881 Controller
LU-80A Pneumatic Circuit Unit
Helps reduce measurement errors and false rejects due to part temperature effects.
Compensation graphs viewed on large LCD screen.
Easy setting for mapping of the graphs.
Temperature compensation mapping should be adjusted on the actual production line.
The temperature difference between the part and the environment is measured to carry out the Temperature Compensation according to the correlation between the temperature difference and measurement errors.
Major applications
Post-cleaning leak tests, engine parts (cylinder head, cylinder block)
(a correlation should exist in the differential pressure between the temperature of Work and the applied air)
Example of Temperature Compensation Data
| Tested part | Oil pan (Whole) |
| Test pressure | 100kPa |
| Equivalent internal volume | 2500 mL |
| Leak specification | 10 mL/min |
| Test timers | Pressurization 22 secs.
Equalization 3 secs.
Stabilization 5 secs.
Detection 3 secs. |
