LS-1866 DP Leak Testers

High pressure compatible
Lightweight and compact
Simple features
Entry model

Entry-level model of Air Leak Testers that has the same high detection capability as higher-end models. Good cost performance realized by integrating the necessary functions into a compact body.

Basic Specs.

Pressure range	-100 kPa to 1.5 MPa
Power source voltage	AC100 to 240 V ± 10 %,50 / 60 Hz,70 VA max
Ambient temperature	Operating temperature: 5 to 40℃ Storage temperature: -20 to 70℃
External dimensions	W165 x D240 x H208 (excluding protrusions)
Weight	Approx. 6.3 kg (Standard spec.)

Features / Functions

Highly sensitive and pressure-resistant DPS. Air operated valves that are not affected by heat.
The Intelligent Pneumatic Circuit with excellent performance and safety checks valve operation and sensor sensitivity in every test.
Master Preset and NR Mode can improve detection and reduce test time.
Extensive channel functions for a wide variety of works.

Measurement Performance Enhancing Features

Intelligent Pneumatic Circuit

Leak detection circuit with internal pressure detection method, available in Intelligent 1 Pneumatic Circuit and Intelligent 2 Pneumatic Circuit. The differential pressure sensor and air operated valves are integrated with the manifold in a highly durable structure that minimizes breakdowns. In each test, the differential pressure sensor and the valves are self-checked to ensure that the judgment result is reliable.
High-performance differential pressure sensor

The improved differential pressure sensor, which is the heart of the Air Leak Tester, and the high-performance AD converter have realized measurement stability in units of 0.1 Pa. These effects are expected to improve measurement accuracy and shorten test time.
Mastering／Master Preset

Error components due to adiabatic compression, deformation, etc. during measurement are extracted and compensated using the value, enabling testing with a considerable error component, reducing measurement time and at the same time facilitating control on the master side. In addition, the system follows gradual environmental changes, such as room temperature, to achieve more stable measurements.
Leak calibratrion

To display differential pressure due to leak in flow units such as mL/min, a flow coefficient (Equivalent Internal Volume) is required. There are two methods to measure this coefficient: the volumetric change method and the Leak Master method. In addition, the fully-automated ALC (volumetric change method) and the automatic Leak Master provide the K-check function that not only measures the flow coefficient but also automatically checks for changes in leak sensitivity.

Safety and Reliability Enhancing Features

Calibration port

A port provided on the front panel for daily inspection and leak calibration. Differential pressure and test pressure can also be inspected and calibrated.
NR (Noise Reduction)

When the leak limit is lowered to pursue accuracy or to shorten measurement time, the ratio of noise to the measured value will increase. In the Noise Reduction (NR) mode, indeterminate judgment areas are set for the initial Detection, and if the work falls within one of these areas, the noise component is removed by repeating Detection so that false rejection of good works can be reduced.
External Exhaust Valve

To prevent malfunctions due to water or oil inside the works entering the tester, an externally installed exhaust valve (optional) is controlled by the tester.
Exhaust Interference Prevention

For a system with multiple leak testers, the exhaust process can cause large fluctuations in the source pressure. It can have a negative impact on the tester(s) that are still measuring. This function is provided to prevent this problem.