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AW Gear Meters 8809 Industrial Drive, Franksville, WI 53126  web: www.awgearmeters.com

Tel: 262-884-9800Fax: 262-884-9810  Email: [email protected]

REV. 12/08 CAPM-2o.DOC

CAPM-2o Carrier Frequency Pickup Module

Installation & Technical Guide

Installation:

• Ensure that the flow meter sensor cavity is free of debris prior to installation.

• Screw the CAPM-2o 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.

Please heed the following warning:

CAUTION: DO NOT EXCEED 7 NEWTON-METERS FORCE TO SEAT THE SENSOR, THIS IS

EQUIVALENT TO HAND TIGHT. EXCESS FORCE MAY CRUSH THE SENSOR NOSE OR

DAMAGE THE FLOW METER BY FORCING THE METAL SECTION UNDER THE SENSOR INTO

THE MEASURING CHAMBER.

Wiring should be installed by a qualified instrumentation technician.

Some basic installation guidelines are reviewed overleaf.

Description:

The CAPM-2o is a UL & CUL approved, intrinsically safe pickup sensor for use in Class 1, Div. 1

locations. The output signal is a frequency proportional to flow in a square wave voltage form of

approximate amplitude: Supply – 1.5V. The sensor must be installed with an intrinsic safety barrier in

accordance with the guidelines detailed in document # CAP2902 – CAPM INSTALLATION IN

HAZARDOUS AREA. Recommended barriers such as Pepperl & Fuchs Z787 (12-28V) are available

from AW Flow Meters.

The output is a sourcing open collector transistor (NPN Type).

An NPN sinking type is available and is designated as CAPM-2i.

Technical Data

Supply Voltage: 10 to 30 Volt DC

Supply Current: 20 mA @ 15 Volt, Max 35 mA

Minimum Signal: 0.5 Hz

Signal Output: Square wave, V

High

≈ V

- 1.5V

Low

≈ 0V

Duty Cycle: 50%

Frequency Output: Flow dependent, up to 2000 Hz

Load: >500Ω

Driving Capacity: 10 mA Max

Temperature Range: -60°F to 185°F (-50°C to 85°C)

Connections:

A – +10 to 30 Volt DC supply voltage

B – Ground for supply and signals

C – Frequency signal output

Note: If signal does not go to ground, connect

external resistor, 5 K-10 Kohm, between input and

ground of monitoring equipment.

Figure 1

AW Wiring Color Code:

Supply Voltage: Red

Ground: Black

Signal: White

1 2

Technical Data 1
Figure 2 2

Sommario

Pagina 1 - Technical Data

AW Gear Meters 8809 Industrial Drive, Franksville, WI 53126  web: www.awgearmeters.com Tel: 262-884-9800Fax: 262-884-9810  Email: awinfo@aw-

Pagina 2 - Figure 2

AW Gear Meters 8809 Industrial Drive, Franksville, WI 53126  web: www.awgearmeters.com Tel: 262-884-9800Fax: 262-884-9810  Email: awinfo@aw-

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