Vacuum Lifting System Accessories
Vacuum Leakage Sensing Systems
VLS-08 Series - The Latest in Solid State Vacuum Leakage Detection
Made in the USA!

The VLS-08 (Series) monitors the vacuum level automatically. If vacuum is lost during a lift a loud horn sounds, and a red light flashes to warn the operator. The VLS-08 monitors vacuum level even if the operator is not looking at the lifter, a useful and popular option.

The VLS-08 (Series) is a battery powered unit consisting of a pressure sensor, an audible warning horn, red warning light, and test switch, all controlled by a solid state microchip. All ANVER Vacuum Lifters, Vacuum Tilters and Specialty Vacuum Lifting Machinery can be equipped with a VLS-08 (Series) Solid State Vacuum Leakage Sensor and Warning System. The system is packaged in a rugged polycarbonite enclosure with a 1/4" push-to-connect fitting for tubing connections.

During each lifting cycle the programmed 'intelligent' processor senses the peak vacuum level. From this point, a 10% loss (or 20% loss for VLS-08-20) of vacuum with a leakage rate of less than 1½ in. Hg per second from that peak level will trigger the horn and light, informing the operator of a leak. The alarm will not sound on the detach cycle as with other primitive systems using preset switches. Even the smallest leak anywhere in the system will be detected.

• Advanced Solid State Circuitry with Micro-Controller
• Precise, Reliable, Board Mounted Vacuum Transducer
• LCD Digital Display of Vacuum Level in Inches of Hg
• Audible Warning Horn • Bright Flashing Red LED Warning Light
• Push-to-Connect Vacuum Source Port to Connect to Vacuum Manifold

• Auxiliary Output Jack to Connect to Optional VLS-07- AUX-S Auxiliary Siren/Alarm
• Easy Access to Battery Compartment
• Low Battery "Chirp" Indicator
• Light / Horn / LCD Test Button
• Powered by One Standard 9V Lithium Battery (included)
• Weight: 8 oz.

Principle Of Operation

The VLS-08 (Series) Vacuum Leakage Sensor is a vacuum level differential detector which is pre-programmed to activate the alarm at a 10% reduction in vacuum for VLS-08 or 20% reduction in vacuum for VLS-08-20 with a leakage rate of less than 1.5 inches Hg per second. The alarm will continue until a sufficient increase in vacuum is achieved, indicating no additional leakage is present, or the indicated vacuum level drops below 5 inches Hg. The horn, LED (red light) and LCD (digital display) can be tested by pressing and holding the "Test Button" for approximately 3 seconds. The unit is also equipped with a low battery indicator which will cause the horn to "chirp" and the LED to flash when battery power is low. The battery should be replaced immediately with a standard 9V lithium battery. The auxiliary output jack on the VLS-08 (Series) is an open collector output which can be connected directly to the VLS-07-AUX-S (auxiliary siren/strobe), or to another I/0 device, such as an emergency stop function on a CNC control, through a solid state relay.

The VLS-08 is designed to be a warning device for vacuum leakage detection. When properly installed on an ANVER vacuum lifter, the operator will be warned of a slow vacuum leakage and should have adequate time to safely lower the attached load. If the alarm signal is ignored and the lifting operation is continued, the vacuum loss may adversely affect the vacuum "hold", possibly resulting in serious injury to the operator. The VLS-08 is not designed for nor effective in detecting fast leaks or sudden failures of the vacuum system.

The vacuum level achieved, using a Mechanical Vacuum Generator, is weight sensitive, relative to the load and lifter weight, as well as the pad, manifold and generator volume. Lighter loads will produce a lower vacuum reading, which may render the VLS-08 Leakage Sensor ineffective, as the achieved vacuum level approaches 6” of Hg.

ANVER VLS-07-AUX-S Auxiliary Siren/Alarm (VLS-08-AUX coming shortly, looks identical)

The VLS-07-AUX-S is a peripheral device designed to be connected to the VLS-08 vacuum leakage sensor. When the VLS-08 warning is activated, the VLS-07-AUX-S sounds a loud 105db(A) siren and the flashing strobe is initiated. This add-on device is ideal for noisy environments, where the lifter is at a distance from the operator, or where other personnel may be in the general area of use.

This device has a self contained, easily accessible 9V battery and plugs directly into the AUX output port on the side of the VLS-08 Vacuum Leakage Sensor unit with a signal cable 25” [63.5 cm] long (included).

Vacuum Leakage Sensor and Warning Device