AW-Lake CAPM-2 Service Manual

CAPM-2N Carrier Frequency Pickup Module

Description:

The CAPM-2N is used with the HPM series and the TR series of flow meters. The CAPM-2N is a
Carrier Frequency sensor which means there is no permanent magnet in the pickup and any
magnetic drag on the flow meter gears or turbine is avoided. The CAPM-2N requires a supply voltage
between 10 Volt DC to 30 Volt DC. A diode in the supply input prevents damage to the module in
case the polarity of the supply voltage is wrong. The output signal is a square wave. The frequency is
proportional to the flow rate.

The output is a sinking open collector NPT transistor.

Technical Data :

Supply Voltage : 10 to 30 Volt DC
Supply Current : 9 mA @ 15 Volt, Max 18mA
Minimum Signal : 0.5 Hz
Duty Cycle : 50%
Frequency Output : Flow dependent, up to 2000 Hz
Sinking Capacity: 50 mA Max

Connections:

A - +10 to 30 Volt DC supply voltage
B - Ground for supply and signals
C - Frequency signal output

AW Company wire color code:

Supply Voltage: Red
Ground: Black
Signal: White

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