Bennett Pulser Assembly Instruction Manual
Product Introduction
5
SECTION 2: PRODUCT INTRODUCTION
The pulser assembly is a dual phase electronic pulser that pulses at a rate of 256 pulses per revolution. These pulsers are physically
mounted to the output shaft of the Bennett SB-100 meter. Note: There is one pulser for every meter. As fuel flows through the meter,
the output shaft rotates and turns the pulser. Approximately 8 rotations of the meter represent 1 gallon of fuel.
FEATURES
Pulses at a rate of 256 pulses per revolution or roughly 1024 pulses per gallon
Optically coupled device and outputs 2-separate phases of square wave pulses
Operate off a reg5-volt DC signal.
Intrinsically safe for use in Class 1, Division 1, Group D hazardous locations when used in conjunction with Bennett Dispensers.
Pulses in tenths, hundredths, or cents depending on dispenser programming.
Pulse “weight” can be adjusted in Bennett electronics for electronic calibration of the dispenser.
The Pulser Barrier Boards are covered by a plastic cover. Always replace the cover after servicing the equipment.
SPECIFICATIONS
Electrical Ratings:
Operating Voltage:
5.0 +/- .25 VDC
Supply Current:
30mA Max @ 5 VDC
Logic Output Characteristics:
Output Type: Open Collector with integrated Schmitt Trigger and 10Kohms pull up resistor
Maximum sink current: 16mA @ .40 Volts
Power Consumption:
150mW Maximum
Optical Rise Time:
500nS typical
Optical Fall Time:
16nS typical
Mechanical Ratings:
Mechanical Life:
10 million revolutions
Time Life:
10 years – continuous
Mounting Torque:
20 in-lbs. maximum
Shaft Push out force:
100 lbs.
Terminal Strength:
5 lbs. terminal pull out force minimum
Solderability:
95% free of pin holes & voids
Operating torque:
1.5 in-oz. maximum – (no detents) – for unsealed version
Environmental Ratings
Operating Temperature:
-40C to +85C
Storage Temperature:
-55C to + 100C
Relative Humidity:
90-95% @ 40 C for 96 hours
Vibration resistance:
Harmonic motion with amplitude of 15g with a varied 10 – 2000 Hz frequency for 12 hours
(MIL-STD-202)
Shock Resistance:
Test 1: 100g for 6mS, half sine wave with velocity change of 12.3 ft/s
Test 2: 100g for 6mS, sawtooth wave with velocity change of 9.7 ft / s
Shaft seal:
IP67 (61RS only)
Summary of Contents for PULSER
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