LS-1881 Leak Tester
The LS-1881 consists of a Windows®-based controller unit capable of managing up to 8 independent pneumatic units to achieve high production speeds. This leak testing system can also be used to simultaneously test multiple cavities in a single production piece. By using the same patented differential pressure sensor (DPS) as the LS-1842 air leak tester, the LS-1881 unit allows for a wide variety of quality control functions, as well as easy operation, all visualized and controlled from a large color LCD screen.
Multiple pneumatic circuit units
With the ability to connect up to 8 units, the LS-1881 reduces facility costs and the space required to operate. This allows for maximum efficiency and productivity in a limited space.
Simple wiring
Thanks to the simplicity of its wiring, the LS-1881 significantly reduces the number of machine assembly hours. Additionally, it allows for the installation of I/O units directly on the control board, facilitating the connection between the pneumatic circuit units.
Selective measurement screen
The LS-1881 allows the selection of different types of display, such as the compensation value, test pressures, and others, as well as the leak value. This function is carried out through different modes, giving the user the ability to select one, two, four, or eight measurements at a time.
Substantial help mode
The help mode content allows the user to display lists of errors and probable causes to narrow down the source of the problem. When the LS-1881 exhibits a fault, it instantly checks the status of the input and output signals on the I/O monitor screen.
Quality control functions
The LS-1881 can store up to 1000 data values per station and can graphically represent them directly on the machine through the quality control (QC) function. Subsequently, the measured data can be analyzed on a computer for better understanding and processing via a USB device.
Product features
Standard features
Intelligent pneumatic circuit II
Performance of the check valves. Pneumatic tests to verify the sensitivity of the DPS. Valve equipment. Weight reduction. High flow capacity.
Load retention
It is used to detect the location of the leak.
Calibration
Measurement of equivalent internal volume. Calibration of range K (Ve) and compensation of the differential pressure sensor. Calibration test of the range and compensation of the pressure sensor.
Leakage limits
Two-level limit setting (DET HH, DET Hi, DET Lo, DET LL). Noise reduction.
Drift compensation
Master adjustment.
Self-diagnosis
Performance of the valves. Sensitivity of the pneumatic system DPS. Open/closed shut-off valve. Sensor compensation. CPU performance.
Exhaust interference prevention
Control of the exhaust timing of the pneumatic circuit units.
Sensor protection (exhaust air blowing)
Cleaning of the pneumatic circuit at the end of each test cycle.
Sensor protection (external exhaust valve)
An independent external exhaust valve unit (G3-M) is required.
Groups
Synchronize start and end (escape) of selected station.
General specifications
| Differential pressure | |
| Minimum reading | 0.1 Pa |
| Reading accuracy | ± 2.5 % of the reading ± 1 Pa. ± 2.5 % of the reading ± 1 Pa for a range above 50 Pa. ± 2 Pa for a range of 0 to 50 Pa |
| Sensor range | ± 1500 Pa |
| Test pressure | 5 mPa |
| Screen | |
| Test accuracy | mPa, kPa (PSI, kg/cm2, bar, mbar, mmHg, cmHg, inHg) *1 |
| Leakage rate | Pa, kPa, mL/s, mL/min, L/min (mmH20, inH20, mmHg, in3/min, in3/d) *1 |
| Equivalent internal volume | mL, L (in3, ft3) *1 |
| Number of stations | Up to 8 stations |
| Number of channels | 32 channels (0 ~ 31) |
Are you looking for more technical information about the LS-1881?
Download the complete catalog from the manufacturer Cosmo Instruments.