Macnaught M Series - User Manual

Questions and Answers

C
Carlos SchwartzAug 4, 2025
What to do if fluid will not flow through Macnaught Measuring Instruments?
- B
  Bryce WilsonAug 4, 2025
  If fluid isn't flowing through your Macnaught Measuring Instruments, several factors could be at play. Start by checking for any foreign matter blocking the rotors; if present, dismantle the meter and clean the rotors, ensuring a strainer is fitted in line. Also, inspect the line strainer for blockages and clean it if necessary. Damaged rotors can also halt flow, so replace them, again ensuring a strainer is fitted. Over-tightened meter connections can restrict flow, so readjust them. Finally, verify that the fluid's viscosity is within the specifications for your instrument; if it's too viscous, consult the specifications for the maximum viscosity.
V
Veronica McdowellAug 10, 2025
Why is my Macnaught Measuring Instruments meter reading inaccurate?
- F
  fsolomonAug 11, 2025
  An inaccurate reading on your Macnaught Measuring Instruments meter can stem from several causes. First, check that the fluid flow rate aligns with the specified minimum and maximum flow rates. Air in the fluid can also lead to inaccuracies, so bleed the air from the system. Lastly, inspect for excess wear potentially caused by incorrect installation; check the meter body and rotors, replacing parts as needed, and refer to the installation instructions.
J
Joshua GonzalezAug 17, 2025
What to do if there is reduced flow through Macnaught M Series?
- M
  Mitchell DanielsAug 17, 2025
  If you're experiencing reduced flow through your Macnaught Measuring Instruments, the issue might be a partially blocked strainer; clean it to resolve this. Also, verify that the fluid's viscosity is within the specified limits; if it's too viscous, consult the specifications for maximum viscosity.
K
Kevin MasseyAug 22, 2025
What to do if LCD register is not working on Macnaught Measuring Instruments?
- J
  Jon WatkinsAug 22, 2025
  If the LCD register on your Macnaught Measuring Instruments isn't working, start by checking the battery connections to ensure they are properly connected. If the connections are good, the battery may be flat and need replacing. Inspect the wiring for any loose or faulty connections. If the issue persists, the LC Display might be faulty and require replacement. Also, check the connection from the LC Display to ensure it's properly wired.
A
Amy ThompsonAug 29, 2025
What to do if Macnaught M Series meter is not giving a pulse signal?
- A
  aaron44Aug 29, 2025
  If your Macnaught Measuring Instruments meter isn't providing a pulse signal, the problem could be a faulty hall effect sensor or a faulty reed switch; in either case, replace the PCB Board. Alternatively, the magnets might have failed, requiring their replacement.

Macnaught M Series Specifications

General

Model	M Series
Category	Measuring Instruments
Type	Flow Meter
Material	Aluminum, Stainless Steel
Pressure Rating	100 bar (1450 psi)
Connection Type	BSP or NPT
Output	Pulse, 4-20mA
Protection Rating	IP65

Summary

Owner Information and Safety

Safety Precautions

Crucial safety advice must be read before operating the flow meter.

Manual Overview

Details the manual's content, focusing on pulse output meters.

Technology Introduction

Explains the oval rotor design for reliable and accurate flow measurement.

Installation and Operation Guidance

Installation Procedures

Provides step-by-step instructions for installing the flow meter correctly.

Operating Principle

Explains how the flow meter works using rotors and magnets to generate signals.

Important Warnings

Contains critical warnings and cautions regarding fluid compatibility, strainers, and air purging.

Maintenance and Repair

Disassembly and Reassembly

Instructions for taking apart and correctly putting the flow meter back together.

Exploded Parts Diagram

A visual breakdown of the flow meter components with part numbers.

Product Specifications

Flowmeter Performance Specs

Details flow ranges, K-factors, operating temperatures, and pressure ratings.

Pulser Sensor Specs

Technical details for reed switch and Hall effect sensor pulse board options.

High Specification Options

Specifications for flow meters with high temperature or high viscosity options.

Wiring and Connectivity

Cable Wiring Instructions

Wiring details for reed switch and Hall effect sensors when fitted with a cable.

DIN Connector Wiring

Wiring pinout and cable connections for Reed/Hall, Dual Hall, and Dual Reed modules with DIN connectors.

M12 DIN Cable Specs

Technical details for the M12 DIN connection cable, including its specifications.

Troubleshooting and Meter Settings

Troubleshooting Guide

Common problems, their causes, and recommended solutions for flow meter operation.

Torque Settings

Specifications for tightening torque values for different M-series flow meter models.

Spare Parts Identification

Spare Kit Options

Lists available spare kit types and part numbers for Series 006 and 009.

Series 006 Spare Kits

Part numbers for Rotor and Pulser kits for Series 006, fitted with cable or DIN.

Series 009 Spare Kits

Part numbers for Rotor and Pulser kits for Series 009, fitted with cable or DIN.

Spare Parts Coding Procedure

Pulser Kit Coding (Cable)

Explains how to construct part numbers for Pulser Kits fitted with cables.

Pulser Kit Coding (DIN)

Explains how to construct part numbers for Pulser Kits fitted with DIN connectors.

Seal Kit Coding (Cable)

Explains how to construct part numbers for Seal Kits fitted with cables.

Seal Kit Coding (DIN)

Explains how to construct part numbers for Seal Kits fitted with DIN connectors.

Rotor Kit Coding (Cable)

Explains how to construct part numbers for Rotor Kits fitted with cables.

Rotor Kit Coding (DIN)

Explains how to construct part numbers for Rotor Kits fitted with DIN connectors.

Material and Performance Data

Wetted Parts Materials

Lists materials used for wetted components for Model 006 and 009 across different types.

Pressure Drop Characteristics

Graphs showing pressure drop versus viscosity for standard and high viscosity rotors.

Dimensional Information

Meter Dimensions (Model 006)

Dimensional drawings for various Model 006 configurations and associated registers.

Meter Dimensions (Model 009)

Dimensional drawings for various Model 009 configurations and associated registers.

Environmental Compliance

WEEE Directive Information

Information regarding the WEEE Directive and responsible disposal of electronic equipment.

Disposal Guidelines

Notes on product disposal according to local and national environmental regulations.

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