A Call to Alarms

Process monitoring through status indicators

In the dynamic world of system monitoring, an important component of the analysis instrumentation is the alarm/status indicator. These devices are available as visual, audible, and combination audible/visual alarms. They are wired to controllers or panel meters, and are used to monitor conductivity, level control, pH, pressure, temperature, and many assembly line processes. When high or low limits are reached or exceeded, the alarm goes off to signal a problem with the system.

Visual Alarms

Most visual alarms feature a set of green, amber and red incandescent lamps. As with traffic signals, the green light signifies that all systems are "go," that they are functioning properly. The amber light comes on to signal possible problems, while the red light signifies that the system has, or should be, shut down.

Incandescent lamps are steady-burning—they stay lit when actuated. They are most commonly used in areas where workers have direct visual contact with the light, such as in an assembly process in which a green, continually glowing lamp signals workers the system is in operation and is operating properly.

More Details or Order Online: Low-Profile Incandescent Lights Low-Profile Strobe Lights Low-Profile Audible Alarms

Yet, incandescent lamps may not be suitable in a busy, noisy production area. Here, strobe alarms are more effective. When the controller/meter's high or low limits are reached, strobe lights actuate and flash, reflecting off walls and ceilings so that even workers with their backs to the monitoring system are alerted.

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Audible Alarms

Selectable by the user, many audible alarms emit a variety of sounds or buzzers. These indicators are used in areas that have low noise levels to allow the workers to hear the buzzer, or outdoors, where the visual lights may not illuminate well due to sunlight.

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Audible/Visible Alarms

Audible/visual alarms give the end-users the best of both worlds. They emit an audible alarm, as well as providing a visual indicator. These products are available in a strobe/audible alarm, or an incandescent/audible alarm.