LINE ISOLATION MONITOR with MICROPROCESSOR

According to the Standard for Health Care Facilities NFPA 99 3-3.3.4.2(b) and (c) under Line Isolation Monitor Tests - "the LIM circuit shall be tested at intervals of not more than 1 month by actuating the LIM test switch. For a LIM circuit with automated self-test and self-calibration capabilities, this test shall be performed at intervals of not more than 12 months."

The new equipment will save the hospital time by eliminating the monthly and bi-yearly tests. With the new alarm level, more equipment can be connected to the isolated power system without causing nuisance alarms. The new alarm is UL listed and can be used to retro-fit any older ground detector or 2 ma Line Isolation Monitor in existing hospital panels.

CONTINUOUS MONITORING WITH NON- SWITCHING CIRCUITRY
Another product can be a solid-state, non-switching LIM designed to continuously measure the impedance between the secondary conductors of an isolated power system and ground. This impedance measurement is processed through the solid-state circuitry and displayed on an ammeter. No switching circuitry is used that could generate interference on physiological monitors.

LOW INTERNAL LEAKAGE CURRENT
The LIM is designed for an internal leakage current of only 25 microamperes allowing for more system leakage without exceeding the alarm point level.

5 MILLIAMPERE ALARM POINT
The alarms when the total hazard current reaches 5 milliamperes as stipulated by the 1984 National Electrical Code and NFPA 99 'Health Care Facilities. With a 5 milliampere alarm level more equipment can be connected to the isolated power system without causing nuisance alarms.

SENSITIVE TO A LOSS OF GROUND
A solid ground connection is vital for proper monitoring of an isolated power system. The LIM will detect a loss of ground to the LIM and will signal a visual and audible alarm.

PROVEN RELIABILITY
Thousands of LIM's are successfully working in many hospitals throughout the country. A rigid, quality assurance program which includes a 72-hour 'burn-in' period insures that each LIM is in top working order before being placed into service.

RECOGNIZED UNDER UL STANDARD 1022.