Yokogawa AB-16 Counts Per Second Panel Meters

The Yokogawa Counts Per Second Type AB-16 / AB-40 / DB-16 / DB-40 Panel Meter is an analog frequency meter that converts pulse-rate inputs into a visible needle indication, engineered for panel or switchboard mounting in rugged industrial environments where clear, at-a-glance pulse-rate visibility is essential. It is used to monitor pulse frequency or count rate signals in electrical measurement systems and is commonly installed in switchgear, control panels, and industrial instrumentation, powering accurate process indication in power plants, marine systems, and manufacturing facilities that rely on sensors, tachometers, or flow meters producing pulses proportional to speed or flow. Key specifications include ±1.0% of full scale accuracy (ANSI C39.1 class), a 250° analog display, and distinct case sizes: AB/DB16 (~8.75 inch) and AB/DB40 (~4.25 inch); the unit is housed in steel or ABS with a polycarbonate window and mounts on panels or switchboards, offering readability from long distances (AB-16 about 30+ feet). Operates typically from 0 to 40°C and is part of Yokogawa's legacy AB/DB switchboard meter series, which is discontinued, with common replacements including Yokogawa 250 Series Analog Frequency Meter, Yokogawa DB40 Frequency Meter Variant, and Yokogawa Digital Panel Frequency Meter Series.