Description
AW-Lake CAPM-2 Carrier Frequency Sensor is a Carrier Frequency sensor, which means there is no permanent magnet in the pickup, and any magnetic drag on the flow meter is avoided. The CAPM-2 requires a supply voltage between 10 VDC and 30 VDC.
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, voltage pulse of approximate amplitude (supply – 1.5 V). The frequency is proportional to the flow rate. For use with JV-CG and JV-KG meters (not for use with aluminum meters).
AW-Lake CAPM-2 Carrier Frequency Sensor Features:
- Meter Compatibility: Used with JV-CG and JV-KG meters (not for use with aluminum meters)
- Output Signal: Square wave, voltage pulse of approximate aplitude (supply – 1.5V)
- Sourcing Output: PNP type sourcing open collector transistor
- Intrinsically Safe: Intrinsically safe CAPM-2o version available
- IS Safe Version: UL & cUL certified for use in Class 1, Div 1 locations
Installation:
- Ensure that the flow meter sensor cavity is free of debris prior to installation.
- Screw the CAPM-2 into the flow meter by hand until the sensor nose contacts the bottom of the cavity.
- Do not screw in harder than hand tight, as a thin metal section is under the sensor nose
Electrical Installation Tips for Sensors and Flow Meters
Wiring should be installed by a qualified electrician or instrumentation technician. When dealing with low voltage/power signals from pickups and transmitters, it is important to use a shielded cable between the transmitter and the signal processing unit. A shielded cable will keep most of the electromagnetic interference (EMI) from entering the signal cable and disrupting the signal before it can be processed. A 20-22 gauge 3 or 4 conductor cable with shield is acceptable.
Recommended cable: Belden #88723 2 pair stranded, 22 awg Teflon coated cable. This cable is available from AW Gear Meters. When hooking up to instrumentation, connect the shield together with the wire for the signal ground, to the Instrument Ground terminal.
Specification:
- Supply Voltage: 10 to 30 VDC
- Supply Current: 9 mA @ 15 Volt, Max 18 mA
- Minimum Signal: 0.5 Hz
- Signal Output:
- Square wave
- VHigh ? VCC – 1.5V
- VLow ? 0V
- Duty Cycle: 50%
- Frequency Output: Flow dependent up to 2000 Hz
- Load: >500?
- Driving Capacity: 10 mA Max
- Temperature Range: -60°F to 185°F (-50°C to 85°C)
Download Data Sheet: CAPM-2 Carrier Frequency Sensor
Ref: aw-lake.com
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