Aw-gear-meters HEF-1 Manuale Utente Scaricare il pdf

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 HEF-1.DOC

HEF-1 Hall Effect Pickup Module

Installation & Technical Guide

Installation:

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

• Screw the HEF-1 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 HEF-1 is a Hall Effect sensor which is compatible with the JVM and SLG series of flow meters.

The sensor detects the rotation of the flow meter’s gears and emits a frequency signal proportional

to flow.

The output signal is an NPN, sourcing square wave pulse which has a duty cycle of

approximately 50%.

Technical Data

Supply Voltage: 10 to 24 Volt DC

Supply Current: 18 mA @ 15 Volt, Max 25 mA

Minimum Signal: 0.5 Hz

Signal Output: Square wave, V

High

≈ V

- 2V

Low

≈ 0.1V

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 24 Volt DC supply voltage

B: Ground for supply and signals

C: Frequency signal output

Figure 1

AW Wiring Color Code:

Supply Voltage: Red

Ground: Black

Signal: White

+SUPPL

OUTPUT

100Ω

3.3KΩ

2N4123

1N4148

GROUND

HEF-1

1 2

Figure 1 1
Figure 2 2

Sommario

Pagina 1 - Figure 1

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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