TP0003B
BM BULKMETER
Chap 8
Page 1
RATE OF FLOW INDICATOR
Chapter 8
RATE OF FLOW INDICATOR
CONTENTS
Para
1 Introduction 1
2 Description 2
3 Installation 3
4 Maintenance 4
5 Servicing 5
6 Spare Parts Schedule 6
Fig Page
8.1 Rate of Flow indicator and cover assembly 4
1 INTRODUCTION
1.1 Where indication of the rate-of-flow of product through a bulkmeter is required, an Avery-Hardoll
brand Rate-of-Flow Indicator can be fitted.
1.2 Rate-of-flow indicators are accurate to within +/- 5% FSD.
1.3 The dial of the indicator can be calibrated in:
Imperial gallons and litres/minute; or
US gallons/minute.
2 DESCRIPTION
2.1 The indicator consists of a calibrated and compensated tachometer, fitted to the front cover of the
calibrating mechanism, and is driven by a compound gear train taken off the calibrating mechanism
friction disc gear.
2.2 The indicator sub-assembly and mounting plate are fitted to the front cover of the calibrating
mechanism, secured by three screws assembled from inside the cover.
2.3 The gear train consists of a compound gear which takes the drive from the friction disc assembly, and
transmits it to a drive pinion on the indicator.
2.4 Right hand (RH) discharge meters have an idler gear interposed between the friction drive gear and
the compound gear. This alters the direction of rotation of the calibrating mechanism gears which
rotate in the opposite direction to Left Hand (LH) discharge meters.
3 INSTALLATION
3.1 Rate of Flow Indicators are assembled to the calibrating mechanism at bulkmeter build, but are
available as a modification kit, containing the parts in Fig 8.1.
3.2 For removal and re-assembly refer to Paragraph 5.
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