AFP CB-II-F/A/A AccuRa Flow Controller Omron MK2P-S Relay 250VAC 28VDC

AFP CB-II-F/A/A AccuRa Flow Controller Omron MK2P-S Relay 250VAC 28VDC

The AFP CB-II-F/A/A is a benchtop flow control relay unit made by AccuRa Flow Products Division of Advanced Controls Engineering Corp. (AFPc Inc.), based in Warminster, Pennsylvania. The unit houses an Omron MK2P-S relay module and provides operator-selectable Latch and Non-Latch switching modes via a front-panel toggle switch, with green and red indicator LEDs for status. A rotary power knob, 12-position screw terminal block, and an attached multi-conductor cable are included, making it ready for hardwired installation.

Specifications & What's Included

• Model: AFP CB-II-F/A/A
• Manufacturer: AccuRa Flow Products Div. / Advanced Controls Engineering Corp. (AFPc Inc.), Warminster, PA
• Relay: Omron MK2P-S
• Relay contact rating (AC): 250VAC — 10A N.O. / 6A N.C.
• Relay contact rating (DC): 28VDC — 10A N.O. / 6A N.C.
• Relay general rating: 250VAC — 7A, Cos φ 0.4
• Relay standards: VDE0435, IEC 255, IEC 950, EN60950 (P.D.3)
• Switching modes: Latch / Non-Latch, selectable via front-panel toggle switch
• Front panel: Power rotary knob, Latch/Non-Latch toggle switch, green LED (Non-Latch status), red LED (Latch status)
• Terminal block: 12-position screw terminal block on rear
• Internal components: Omron MK2P-S relay module, buzzer, indicator lamp assemblies, hand-wired discrete components
• Form factor: Benchtop/desktop enclosed unit — cream/beige panel, teal/blue metal base
• Includes: Attached multi-conductor wiring cable wired to terminal block

Applications

The AFP CB-II-F/A/A was designed for use in fluid flow monitoring and control systems, particularly in laboratory, industrial process, or scientific instrument environments where a relay controller is needed to respond to flow sensing signals. The Latch/Non-Latch switching function allows the unit to either hold a switched state after a trigger (latch) or return to rest when the trigger clears (non-latch) — a common requirement when controlling solenoid valves, alarms, or secondary process equipment based on flow status. The Omron MK2P-S relay at its core is a widely used general-purpose power relay capable of switching both AC and DC loads, making this controller suitable for a range of valve, pump, and alarm circuit applications. AccuRa Flow Products was a Pennsylvania-based manufacturer of flow sensing and control hardware primarily serving laboratory and light industrial customers; units like this CB-II series controller were typical of the custom relay-based control modules built for OEM and lab integration in the 1980s and 1990s.