Gasboy Atlas Start-up User Manual download pdf (Page 113)

MDE-4334D Atlas™ Start-up and Service Manual · July 2013 Page 5-53

Pulsers Electronic and Electrical Components

Pulsers

Read and follow all safety precautions in “Read This First” on page 1-1. Warnings and

cautions appear throughout this section and

must be regarded with utmost vigilance. Follow

OSHA lockout/tagout procedures.

For DEF units, the pulser is part of the Coriolis Meter.

Refer to “Coriolis Meter” on page 6-35.

About Standard Pulsers

A pulser converts meter rotations to PPG (or liter) for use in some units by way of the

controller board or mechanical gear/reed switch system. Program the unit to scale pulses for

specific applications. For example, standard gallonage units use 1000 pulses per gallon. For

other conversion factors, refer to “Pump Programming” on page 4-1.

Figure 5-48: Pulser Assemblies

T18350-G3 Pulser

(9 X 52/53 Standard Flow and 9 X 40 High Flow)

Retail Pulser

Commercial Pulser

M04011B001 Pulser

Testing Pulsers and I.S Barriers

Voltage is limited to 12 VDC in the pulser. An I.S Barrier is used to limit the current. Test the

pulser by substitution and proceed as follows:

1 Unplug the pulser and plug in a known, good pulser.

2 Rotate the pulser and watch displays for the count.

3 Test the I.S barrier by substitution, or disconnect it and check the I.S Barrier with an

Ohmmeter.

4 Measure 10,000 Ohms + or - 20% from gray to gray, yellow to yellow, brown to brown, and

amber to amber.

5 Always read a low resistance from the green wire to the case.

6 Measure between each wire. Meter must indicate an open.

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Gasboy Atlas Start-up User Manual Page 113