AW-Lake FOP-30, FOP-20 Wiring Diagram

FOP-20 & FOP-30 Fiber Optic Pickup Systems

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The fiber optic pickup system consists of a FOP 20 or FOP-30 Reluctance Pickup with a Fiber Optic
Transmitter, Fiber Optic Cable and OPTV-20 Fiber Optic Receiver. The FOP-20 is in an Explosion
Proof Housing for use with HPM, JVM, or JVS series flow meters. The FOP-30 is in an intrinsically
safe housing for use with HPM-SLG or JVS-SLG series.

The fiber optic cable is sold in standard length of 30, 45, 60 and 100 feet.

JVS-XXSLG, JVS

HPM-XXSLG, HPM

FOP-20 and FOP-30 Fiber Optic Transmitters

The FOP-20 and FOP-30 fiber optic pickups are designed with the following criteria:

MAXIMUM 100 FEET

XSLGF

XSLGF

To transmit a safe fiber optic signal. This allows the incorporation of flow meters into fully

charged electrostatic paint systems (35 - 120 Kilo Volts.)

User friendly in respect to initial hookup and maintenance.

Swivel connector to flow meter for easy installation/removal. (FOP-20 only)

Single, sealed, extra long life battery and electronic module.

Simple industrial technology that is easy for maintenance personnel to understand.

CMOS technology for long battery life.

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2440 W. Corporate Preserve Dr. #600, Oak Creek, WI 53154 | www.aw-lake.com | Rev. 07/2017

The FOP-20 and FOP-30 consist of the following stages:

Pickup coil
Battery/electronic Module
Infrared transmitter

The pickup coil is the sensing device. The coil is a low ohm, low inductance device embedded in a
stainless steel housing. Embedded in the pickup is a small magnet which will generate pulses to a
coil when the magnetic field in front of the pickup changes. The infrared wave length from the
transmitter is approximately 820 nm and the pulse lasts no longer than 30 μs. By producing this
very short pulse, the life of the internal DC power source can be greatly enhanced.

The power source is a heavy duty 7000 mAH Lithium “C” cell battery. By utilizing CMOS technology
in the FOP amplifier/transmitter, the quiescent current is below 10μA and
approximately 60μA when the gears are turning at 100Hz. Due
battery, a life expectancy of the battery/electronic module is between 5 and 10 years depending
upon the flow rates and time of use. When the battery is installed by AW Gear Meters, a label with
the installation date is taped to the battery. Do NOT remove this label! As preventive maintenance
we recommend keeping a log with the installation dates of all FOP’s in use. These may be
scheduled for replacement at a convenient time after 5 years of operation. This will ensure
uninterrupted service during production operations.

to the very low drainage on the

increases to

FOP-20

FOP-30

2440 W. Corporate Preserve Dr. #600, Oak Creek, WI 53154 | www.aw-lake.com | Rev. 07/2017

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