macnaught MX Series Oval Gear Flowmeter Instruction Manual

: June 13, 2024
: macnaught

Table of Contents

macnaught MX Series Oval Gear Flowmeter
Product Information
Product Usage Instructions
IMPORTANT INFORMATION
INSTALLATION / SURROUNDING CONDITION
OPERATING PRINCIPLE
INSTALLATION INSTRUCTIONS

macnaught MX Series Oval Gear Flowmeter

Product Information

Product Name: MX Series Oval Gear Flowmeter
Model Number: MXEX-IS-INST Rev 1 04/2022
Features:

Intrinsically Safe with Simple Apparatus PCB
Exceptional repeatability and high accuracy
Suitable for a wide range of fluid viscosities and flow rates
Low-pressure drop and high-pressure ratings
Suitable for gravity and (in-line) pump applications

Product Usage Instructions

Read and retain the instruction manual for operation and maintenance guidance.
Ensure the flow meter is installed within the specified temperature and pressure limits.
Refer to the separate instruction manual for information on operating modes and features of LCD displays.
Scan the QR code on the product or visit www.macnaught.com.au to access the comprehensive web-based support materials.
Follow the installation instructions provided, including earthing points on the flow meter.
Confirm the compatibility of the fluid to be used with the meter. Refer to industry fluid compatibility charts or consult your local representative.
For disassembly and reassembly procedures, refer to the maintenance section in the instruction manual.
If troubleshooting is required, consult the troubleshooting guide in the manual.
For servicing, refer to the exploded diagrams and spare parts kits section in the manual.
Refer to the dimensional diagrams for pressure drop graphs and installation of flanges.
Keep the product identification system, engraving/data plate information, and certificates for reference.

To the Owner

Please read and retain this instruction manual to assist you in the operation and maintenance of this product.
The manual contains operating and maintenance instructions for the MX-Series Flow Meters with Ex outputs. This covers port sizes from 1/4” to 4”.
Refer to the separate instruction manual for information on operating modes and features of LCD displays. Contact local representative or distributor for further assistance.
This Flow Meter has incorporated the oval gear principle into its design. Exceptional repeatability and high accuracy over a wide range of fluid viscosities and flow rates are features of the oval gear design.
With low-pressure drop and high-pressure ratings, oval gear flow meters are suitable for gravity and (in-line) pump applications.
Macnaught offers a comprehensive set of web-based support materials to complement this instruction manual.
Access the Instruction manual by scanning below QR code.

www.macnaught.com.au

IMPORTANT INFORMATION

EQUIPMENT CATEGORY: The Macnaught oval gear flow meters are designed in category II 2 G according to EN 60079-0 and EN 60079-11 for use in zone 1. The inside of the measuring unit is also approved for zone 1. Macnaught declines any responsibility for the use of flow meters outside the designated Ex group, category, and zone.
The flow meters shall be rigorously used within the min-max rated temperature and pressure limits specified by Macnaught. Failure to do so will result in high risk of explosion.
EU CONFORMITY: The manufacturer declares with the EU declaration of conformity on his own responsibility conformity with the protection goals of directive 2014/34/EU for use in hazardous areas with gas. The EU declaration of conformity for the equipment category II 2 G is based on the EU-type technical file SIRA: SIRA 15XT063 Rev 4.
POTENTIAL RISK OF EXPLOSION:
Do not run the flow meter in conditions that would cause overheating, damage, and potentially create a high risk of explosion in a hazardous area.
The flow meter must be protected from impact at all times: impact can cause mechanical sparking and result in a high risk of ignition/explosion
The flow meter external housing can made of Aluminium: contact between iron oxide (for example – rust iron) and aluminium can cause sparks with a high risk of ignition/explosion. Ensure no source of iron oxides are available within the Ex zone where the flow meter is installed.
In the event a leakage on the flow meter is observed, a process must be interrupted immediately and proper maintenance carried out. Leakages could create dry run conditions in the meter with the resulting risk of ignition/explosion.
FLOWMETER USAGE: The flow meter Shall be used exclusively with fluids. No gases are permitted to flow. The presence of gases could create severe hazards and damage
FLUID COMPATIBILITY: Before use, confirm the fluid to be used is compatible with the meter. Refer to Industry fluid compatibility charts or consult your local representative.
SAFETY BARRIER: Use appropriate safety barriers for outputs. Refer to the below pages for Entity Parameters:
- Reed Switch
- ERX Display (Type Fx)
- ERAX Display (Type Gx)
- ERBX Display (Type Hx)
STRAINER: To prevent damage from dirt or foreign matter it is recommended that a Y or Basket type mesh strainer be installed as close as possible to the inlet side of the meter.
- Meter 1/4” 74 micron / 200 mesh
- Meter 1/2”- 2” 250 micron / 60 mesh
- Meter 3”- 4” 420 micron / 40 mesh
When a strainer is installed it should be regularly inspected and cleaned. Failure to keep the strainer clean will dramatically effect flow meter performance. Contact your local representative for advice.
AIR PURGE / LINE PRESSURE: To prevent damage caused by air purge, slowly fill the meter with fluid. To reduce pressure build-up turn off the pump at the end of each day.
Never expose the flowmeter register assembly to atmospheric agents as that may result in a deterioration of ex-plosion protection and an increased risk of explosion.
Any alteration to the product (e.g. removal of the 3 plugs (IP67) on the housing, installation of cable glands, etc) may result in a deterioration of explosion protection and an increased risk of explosion. Macnaught will not accept any liability resulting from alterations to the product.
Only sound IP67 cable glands must be on the register housing to pull the signal cable out of the register. Installation must be carried out by qualified and trained personnel only. Macnaught will not accept any liability resulting from the use of cable glands.

INSTALLATION / SURROUNDING CONDITION

Extreme weather conditions can deteriorate IP67-rated equipment
Take necessary precautions against moisture
Take action to avoid excessive Vibrations
Relative humidity must be less than 90% RH

Service/Repairs:

Don’t Service/Repair on-site as that may compromise explosion-proof protection. Contact Macnaught for Service/Repairs.

OPERATING PRINCIPLE

Fluid passing through the meter causes the rotors to turn, as shown below. One of the rotors (the active rotor) is fitted with magnets.
The passing of the magnets are picked up by the electronic sensor. The excitation of this switch provides a ‘Raw Pulse Output’ which relates to the K-Factor. (e.g. KF 36 = 36 pulses per litre of fluid passed)
This Pulse Output Signal can either be fed to an external receiving element (e.g. Data Logger or PLC) or alternatively to an LC Display which conditions the Pulse signal to display volume of fluid passed. (e.g. Display 1 Litre per for every 36 pulses received)

INSTALLATION INSTRUCTIONS

INSTALLATION :

Assembly, installation, start-up, and maintenance may only be carried out according to the applicable installation standards (e.g. IEC 60079-14) by qualified personnel trained in explosion protection! The information given in the manual and these instructions must always be observed: failure to observe the instructions in this manual will result in a high risk of explosion.
The operator or his agent is responsible for observing any additional standards, directives or laws if required due to operating conditions or place of installation. This applies in particular to the use of easily detachable process connections when measuring flammable media.
When an equipment fault is detected the device shall be de-energized and sent back to the manufacturer for repair.

EARTHING/EQUIPOTENTIAL BONDING:
The flow meter must be included in the on-site equipotential bonding system according to EN 60079-14. Proper earthing and equipotential bonding provisions shall be in place and properly maintained on the flow meter and the whole installation, as per EN/IEC 60079-14 or any other relevant applicable standards. Failure to do so would result in high risk of static sparking and explosion. See Images on Page (5) for earthing/equipotential bonding points on the flow meter.

E LECTROSTATIC CHARGE:
In order to avoid ignition hazards due to electrostatic charge, flow meters may not be used in areas with:

processes that generate strong charges,
mechanical friction and cutting processes,
spraying of electrons (e.g. in the vicinity of electrostatic painting systems) or
pneumatically conveyed dust is exposed.

Electrostatic charging of the housing surface by friction must be avoided. The devices must not be dry-cleaned.
If you feel an electric shock while using the meter, stop dispensing immediately. Identify and correct the problem before continuing.

IMPORTANT NOTES:

After installation and before start-up, the flow meter must be primed and the air in the pipework purged to avoid the onset of dry run conditions in the flow meter: which could cause damage and risk of explosion if persistent.
Do not install the flow meter in close proximity of a source of heat (for ex. furnace, heater) that can cause an increase of flow meter temperature: hot surfaces on the flow meter can cause risk of explosion
Proper strainers/filers shall be used to prevent debris of foreign bodies from reaching the oval gears: failure to do so would result in severe damage and mechanical sparking with high risk of ignition/explosion.

It is recommended that a bypass line be included in the design. This provides the facility for a meter to be removed for maintenance without interrupting production. (see figure)
Use a thread sealant on all pipe threads. Thread tape must not enter flow meter, stopping the flow meter’s operation.
For pump applications ensure pipework and meter have the appropriate working pressure rating to match the pressure output of the pump. Refer to the Meter Specifications section for further details.
Install a Y-type or basket-type mesh strainer as close as possible to the inlet side of the meter.
Meter 1/4” 74 micron / 200 mesh
Meter 1/2”- 2” 250 micron / 60 mesh
Meter 3”- 4” 420 micron / 40 mesh
Note The flow meter can accept flow in any direction.
The meter can be installed in any orientation aslong as the meter shafts are in a horizontal plane as per the picture.
Incorrect installation can cause premature wear of meter components. NOTE Do not over tighten meter connections.
It is important after initial installation to fill the line slowly, high-speed air purge could cause damage to the rotors.
Test the system for leaks. Do not continue use if meter is leaking.
Check the strainer for swarf or foreign material, after the first 200 liters check periodically, particularly if the flow rate is noted to be decreasing.

EARTHING / EQUIPOTENTIAL POINTS ON FLOWMETER

For MX06 to MX50 meters, one of the mounting hole on flow meter cap can be used as Earthing point. See below picture to locate that point:
For MX75 and MX100 meters, see below pictures to locate Earthing point:

Meter	Earthing Point	Meter	Earthing Point
MX06	M5 x 0.80	MX40	M8 x 1.25
MX09	M5 x 0.80	MX50	M8 x 1.25
MX12	M5 x 0.80	MX75	M8 x 1.25
MX19	M6 x 1.00	MX100	M8 x 1.25
MX25	M6 x 1.00

MAINTENANCE PROCEDURE

Inspection and maintenance of installations should only be carried out by experienced personnel.

DISASSEMBLY

Care should be taken not to drop, damage or impact equipment due to risk of spark. Non-sparking tools should be used.
The meter should be removed from the explosive atmosphere when maintenance to any part of the meter is required, the meter must be isolated and the line pressure released.
It is advisable to mark all components with a marker pen before disassembly, to ensure all the components are replaced to their correct position during the reassembly process.

Remove the meter cap by loosening the bolts on the underside of the meter body. (see FIG 1, Page 7)
Remove the O-Ring from the O-Ring groove. Wipe clean of grease and store in a clean place.
Remove rotors from the cap and shaft assembly. The shafts are fixed to the cap for sizes 1/4” – 2” and to the body for 3” and 4” sizes. No need to take them off.

Do not remove shafts from their location.

REASSEMBLY

Before reassembling, check the condition of flow meter parts (rotors, body, cap, seal O-ring, and shafts). Replace if necessary. Contact Macnaught to check for spare parts availability.
One of the rotors is active (has magnets) and the other one is neutral. The active rotor can be identified by running a metal object over the face of the rotor. Placed both the rotors at 90° to each other onto the shafts. Spin them to check if they move freely. If not, repeat the process.
Active Rotor Placement into Flow meter:
- MX06 – MX09 Meters:
  The active rotor is positioned nearest to the ‘dimple’ on the meter cap. (see FIG 2, Page 7)
  The smooth side of rotor shows up, grub screw will face downwards.
  The chamfered side of the rotor stays upward when placed on to the shaft (see FIG 6, Page 7)
- MX12 – MX50 Meters:
  The active rotor is positioned nearest to the ‘dimple’ on the meter cap. (see FIG 2, Page 7) The meter cap dimple must face towards the flow meter body dimple. (see FIG 2 & 3, Page 7) The magnet side face upward when placed on the cap.
- For MX75 – MX100 meters:
  Active rotor is positioned on to the shaft away from the flow meter foot. (see FIG 7, Page 7) The magnet side of the active rotor faces upward when placed inside the flow meter body.
Smear the O-ring with light film of grease and place into the Groove. (see FIG 3, Page 7)
Place the meter Cap on the meter Body.
Meter cap dimple must face toward the flow meter body dimple (MX06-MX50 Meters). (see FIG 2 & 3, Page
Insert the cap head screws and tighten in a diagonal sequence 1, 5, 7, 3, etc.
Bolts Torque Ratings:
- MX06-MX12 (6.5 Nm)
- MX19-MX25 (15 Nm)
- MX40-MX100 (33 Nm)
Test the meter by turning the rotors with a finger or by applying very low air pressure (no more than a goodbreath) to one end of the meter, before returning the meter to service.

PICTORIAL REPRESENTATION OF FLOWMETER AND DISASSEMBLED PARTS

PRODUCT IDENTIFICATION SYSTEM

Series

| ****

MX

---|---

MX Port Size

| | 06| 1/4”
09| 1/4”
12| 1/2”
19| 3/4”
25| 1”
40| 1 1/2”
50| 2”
75| 3”
100| 4”

Category

| | P| SS/SS/FEP SS/PEEK/FEP| MX06-MX50

S

Port Connection

| | 1| G threads| ****

MX06-MX100

3″ BSP and NPT port connection for MX100

2| NPT threads
3| ANSI 150# Flanges| ****

MX25 – MX100

4| JIS 10k Flanges
5| DIN PN 16k Flanges
6| BSP (Rc) Threads| MX06, MX09, MX12 and MX25

Rotor Type

MX40-MX100 (AL)

T| SS| MX06P-MX50P
V| High Viscosity (SS / AL)| MX09S-MX100S MX09P-MX50P
Output

Type

Example

| ****

MX

| ****

06

| ****

P

| ****

–

| ****

2

| ****

T

| ****

Fx

FLOWMETER SPECIFICATIONS

Flow Meter Series

| Flow Range

(Viscosity < **5 cP)**

| Flow Range (Viscosity > **5 cP)
---|---|---
Metric| US| Metric| US
MX06| 2 to 100 LPH| 0.5 to 26 GPH| 0.5 to 100 LPH| 0.13 to 26.4 GPH
MX09| 25 to 500 LPH| 6.6 to 132 GPH| 15 to 500 LPH| 4 to 132 GPH
MX12| 3 to 25 LPM| 0.8 to 6.6 GPM| 2 to 30 LPM| 0.5 to 8 GPM
MX19| 8 to 70 LPM| 2 to 18.5 GPM| 3 to 80 LPM| 0.8 to 21 GPM
MX25| 10 to 100 LPM| 2.6 to 26 GPM| 6 to 120 LPM| 1.6 to 32 GPM
MX40| 15 to 235 LPM| 4 to 62 GPM| 10 to 250 LPM| 2.6 to 66 GPM
MX50| 15 to 500 LPM| 4 to 130 GPM| 15 to 500 LPM| 4 to 130 GPM
MX75| 60 to 600 LPM| 17 to 170 GPM| 20 to 733 LPM| 5 to 194 GPM
MX100**| 220 to 1000 LPM| 60 to 250 GPM| 120 to 1200 LPM| 30 to 300 GPM

Ensure the Flow meter is fitted with ‘High Viscosity Rotors’ if the fluid being metered is 1000 cP or above.

__

Temperature Range & Accuracy

Temperature Range (MX06 P – MX50 P )| -40°C – 70°C
Temperature Range (MX06 S – MX100 S )| -40°C – 70°C
Accuracy (MX06 – MX100)| ±0.5% of reading
__

Flow Meter Series

| Maximum Operating Pressure (Flow meter Threaded )| Maximum Operating Pressure

(Flow meter Flanged** )

---|---|---
kPa| psi| kPa| psi
MX06| 6895| 1000| –| –
MX09| 6895| 1000| –| –
MX12| 13790| 2000| –| –
MX19| 13790| 2000| –| –
MX25| 13790| 2000| 1250| 181
MX40| 10342| 1500| 1250| 181
MX50| 8274| 1200| 1250| 181
MX75| 1200| 175| 1200| 175
MX100| 1200| 175| 1200| 175

Conforms to Directive 2014/68/EU
Flanges Standard (ASME B16.5, Group 2-2.3 Materials)

SIMPLE APPARATUS PCB

(MX1R-IS)

The flowmeter is fitted with Simple Apparatus PCB (MX1R-IS) that conforms to the demands of Intrinsically Safe environment.
Simple apparatus PCB is an electronic board fitted with Dual Reed Switches with 20-25 cm of wire (Alpha wire 3464C or better)

| Ground| Signal
---|---|---
Reed Switch S1| Green + Shield| White
Reed Switch S2| Black + Shield| Red

The MX1R-IS module is designed according to IEC 60079-0:2018 and IEC 60079-11:2012. It is completely pas-sive, adds no energy to the circuits connected and complies with the applicable clauses for Simple Apparatus
(per IEC 60079-11) when used in conjunction with the Intrinsically Safe display
Both reed switch input circuits of the MX1R-IS module, are suitable for use as simple apparatus in type of protec-tion intrinsic safety Ex ia IIC, only for connection to certified intrinsically safe circuits, with following maximum values:
- Ui = 10 V Li = 0 mH
- Ii = 50 mA Ci = 0 μF
- Pi = 200 mW

WARNING

This product cannot be repaired by the user and must be replaced with an equivalent certified product. Re-pairs should only be carried out by the manufacturer or his authorized agent.
Before Replacing/installing MX1R-IS board, the service man/installer must discharge himself by touching a well-grounded object.
The MX1R-IS module must be installed in accordance with the EMC guidelines (Electro Magnetic Compati-bility).
The relative humidity must be less than 90% RH.

Intrinsically Safe ERX display (Flow Indicator/Totalizer)

Type (Fx)

Type Fx is an Intrinsically Safe digital register with a 17mm LCD display, providing a real-time indication of Flow rate, total (resettable) and accumulated total (non-resettable).
This display is IECEx, ATEX, CSA Canada and FM USA certified.
Locally mount to Macnaught Oval Gear Flowmeter with a Simple Apparatus PCB
The flowmeter with Simple Apparatus PCB and Intrinsically Safe display is IP67-rated

Macnaught type Fx display uses:
Fluidwell Intrinsically Safe display electronic PN: F012-P-HR-PC-PD-XI-ZB
Wiring Instructions reference
www.fluidwell.com/assets/downloads/Manuals/FW-F012-P-M_v0404_01_EN.pdf? Use this Instructions Manual if further details are required

Ensure that the measuring system is correctly wired up according to the wiring diagrams. The housing may only be opened by trained personnel
This product cannot be repaired by the user and must be replaced with an equivalent certified product. Repairs should only be carried out by the manufacturer or his authorized agent.

Intrinsically Safe ERX display

(Flow Indicator/Totalizer)
Type (Fx)

For Programming, press PROG/ENTER button for 7 seconds.
Press the CLEAR button to access functions and Press the SELECT button to reach sub-functions
Setting up a value in sub-function, press PROG and get use of buttons
CLEAR & SELECT to adjust a value Once the desired value is adjusted, press PROG button to finalize it
Once all sub-functions are set, press PROG button for 3 seconds to go back to operational mode

SETUP FUNCTIONS AND VARIABLES

unit – scf – Nm³ – NL – P

Intrinsically Safe ERAX display (Flow Indicator/Totalizer with Outputs)
Type (Gx)

Type Gx is an Intrinsically Safe digital register with a 17mm LCD display, providing a real-time indication of Flow rate, total (resettable) and accumulated total (non-resettable). The output includes a 4-20mA and scaled pulse output.
This display is IECEx, ATEX, CSA Canada and FM USA certified.
Locally mount to Macnaught Oval Gear Flowmeter with a Simple Apparatus PCB
The flowmeter with Simple Apparatus PCB and Intrinsically Safe display is IP67-rated

Macnaught type Gx display uses:
Fluidwell Intrinsically Safe display electronic PN: F110-P-AP-CX-HR-IX-OT-PC- PD-XI-ZX Wiring Instructions reference
www.fluidwell.com/assets/downloads/Manuals/FW_F110P_v1901_02_EN.pdf?

Use this Instructions Manual if further details are required

Ensure that the measuring system is correctly wired up according to the wiring diagrams. The housing may only be opened by trained personnel
This product cannot be repaired by the user and must be replaced with an equivalent certified product. Repairs should only be carried out by the manufacturer or his authorized agent.

Intrinsically Safe ERAX display (Flow Indicator/Totalizer with Outputs) Type (Gx)

****For Programming, press the PROG/ENTER button for 7 seconds. Press the CLEAR button to access functions and Press the SELECT button to reach sub- functions. Setting up a value in sub function, press PROG and get used of but- tons CLEAR & SELECT to adjust a value. Once the desired value is adjusted, press the PROG button to finalize it. Once all sub-functions are set, press the PROG button for 3 seconds to go back to operational mode

SETUP FUNCTIONS AND VARIABLES

scf – Nm³ – NL – P

Intrinsically Safe ERBX Batch Controller with 1 x transistor output Type (Hx)

Type Hx is an Intrinsically Safe is a digital register with a 17mm LCD display, providing a control output with 1 x NPN type transistor, for single stage batching applications.
This display is IECEx, ATEX, CSA Canada and FM USA certified.
Locally mount to Macnaught Oval Gear Flowmeter with a Simple Apparatus PCB
The flowmeter with Simple Apparatus PCB and Intrinsically Safe display is IP67-rated

Macnaught type Hx display uses:
Fluidwell Intrinsically Safe display electronic PN: F030-P-HR-OT-PC-PD-XI-ZB

Wiring Instructions reference
www.fluidwell.com/assets/downloads/Manuals/FW-F030-P-M_v0404_01_EN.pdf?

Use this Instructions Manual if further details are required

Ensure that the measuring system is correctly wired up according to the wiring diagrams. The housing may only be opened by trained personnel
This product cannot be repaired by the user and must be replaced with an equivalent certified product. Repairs should only be carried out by the manufacturer or his authorized agent.

Intrinsically Safe ERBX Batch Controller with 1 x transistor output Type (Hx)

For Programming, press PROG/ENTER button for 7 seconds.

Press STOP button to access functions and Press START button to reach sub-functions
Setting up a value in sub function, press PROG and get use of buttons START & STOP to adjust a value
Once the desired value is adjusted, press PROG button to finalize it
Once all sub functions are set, press PROG button for 3 seconds to go back to operational mode

SETUP FUNCTIONS AND VARIABLES

Flow meter Specs / Data Plate

MX06-MX50: Serial number, Model number, k-factor, flow rate range and temperature details are engraved on meter body. See below FIG
MX75-MX100: Serial number, Model number, k-factor, flow rate range and temperature details are engraved on flow meter data plate. See below FIG

INSTALLATION OF FLANGES ON MX25, MX40 AND MX50 METERS

The locknut, gasket, O-ring and retaining ring to be fitted as shown in the below picture. Make sure that the O- rings and gaskets must not have any damages.
Both flanges to be equally screwed to the meter body meeting end to end dimensions and bolt pattern on the flange face
The lock nuts to be tightened to a specified torque as mentioned in the below table

Use a good quality grease for Gasket & O-ring and a good quality anti-cease on flange threads

Meter| Lock Nut Torque| ANSI / ASTM| DIN| JIS| End to End
---|---|---|---|---|---
MX25| 20 Nm| 1″ 150 LB B16.5| DN25 PN 16 EN1092-1| 25A 10K JIS B 2220| 240 mm
MX40| 30 Nm| 1.5″ 150 LB B16.5| DN40 PN 16 EN1092-1| 40A 10K JIS B 2220| 240 mm
MX50| 40 Nm| 2″ 150 LB B16.5| DN50 PN 16 EN1092-1| 50A 10K JIS B 2220| 264 mm

EXPLODED DIAGRAM

(Models MX06-MX50)

METER COMPONENTS

|

ITEM NO

---|---
Display| 1
CAM| 2
CIRCLIP| 3
METER BODY| 4
ROTOR SHAFTS| 5
ROTORS| 6
METER CAP| 7
METER CAP SCREWS| 8

EXPLODED DIAGRAM (Models MX75-MX100)

METER COMPONENTS	ITEM NO	METER COMPONENTS	ITEM NO
METER BODY	1	CIRCLIP	7
ROTOR SHAFTS	2	METER CAP BOLTS	8
ROTORS	3	FLANGE SEALS	9
METER CAP O-RING	4	PROCESS CONNECTION (FLANGED OR THREADED)	10
METER CAP	5	FLANGE WASHERS	11
CAM	6	FLANGE BOLTS	12

TROUBLESHOOTING GUIDE

Problem

| ****

Cause

| ****

Remedy

---|---|---

Fluid will not flow through the meter

| a) Foreign matter blocking rotors

b) Line strainer blocked

c) Damaged rotors

d) Meter connections over-tightened

e) Fluid is too viscous

| a) Dismantle meter, clean rotors (strainer must be fitted inline)

b) Clean strainer

c) Replace rotors (Strainer must be fitted inline)

d) Re-adjust connections

e) See specifications for maximum viscosity

Reduced flow through meter

| ****

a) Strainer is partially blocked

b) Fluid is too viscous

| ****

a) Clean strainer

b) See specifications for maximum viscosity

Meter reading inaccurate

| a) Fluid flow rate is too high or too low

b) Air in fluid

c) Excess wear caused by incorrect installation

| a) See specifications for minimum and maximum flow rates

b) Bleed air from the system

c) Check the meter body and rotors. Replace as required. Refer to installation instructions

LCD register not working

| ****

a) Battery not connected properly

b) Battery flat

c) Faulty wiring connections

d) Faulty LC-Display

e) Faulty connection from LC-Display

| ****

Contact Macnaught

MAINTENANCE VIDEOS

Macnaught provides a comprehensive set of ‘Maintenance Videos’ to assist the end user in all aspects of service and / or repair of the flow meter range.
This web based resource can be accessed by scanning the QR.

WETTED PARTS

Wetted Parts

|

MX06P

|

MX09P – MX12P

|

MX19P – MX50P

|

MX75P – MX100P

---|---|---|---|---
METER BODY| SS 316| SS 316| SS 316|
METER CAP| SS 316| SS 316| SS 316|
ROTORS| SS 316| SS 316| SS 316/PEEK **|
HIGH VISCOSITY ROTORS| –| SS 316| SS 316|
ROTOR SHAFTS| SS 316| SS 316| SS 316|
ROTOR BUSHES| CARBON| CARBON| CARBON|
O- RINGS| FEP| FEP| FEP| *****

Wetted Parts

|

MX06S

|

MX09S – MX12S

|

MX19S – MX25S

|

MX40S – MX50S

|

MX75S – MX100S

METER BODY| AL| AL| AL| AL| AL
METER CAP| AL| AL| AL| AL| AL
ROTORS| SS 316| SS 316| SS 316/PEEK **| AL/PEEK **| AL
HIGH VISCOSITY ROTORS| –| SS 316| SS 316| AL| AL
ROTOR SHAFTS| SS 316| SS 316| SS 316| SS 316| SS 316
ROTOR BUSHES| CARBON| CARBON| CARBON| CARBON| CARBON
O- RINGS| FEP| FEP| FEP| FEP| FEP

Currently Unavailable
SS 316 and AL rotors are assembled with carbon bushes. PEEK rotors do not have carbon bushes.
FEP – PTFE Encapsulated SS 316 – Stainless Steel 316 AL – Aluminium Alloy PEEK – Polyether ether ketone

SPARE PARTS KITS

Category

“ P ”

|

ROTOR KIT

|

SEAL KIT

---|---|---

High Temperature SS 316

|

High Viscosity SS 316 (High Temp)

|

PEEK

MX06P|

MXS-06P-HTROTOR

|

–

|

–

|

MXS-06P-SEAL

MX09P|

MXS-09P-HTROTOR

|

MXS-09P-HVROTOR

|

–

|

MXS-09P-SEAL

MX12P|

MXS-12P-HTROTOR

|

MXS-12P-HVROTOR

|

–

|

MXS-12P-SEAL

MX19P|

MXS-19P-HTROTOR

|

MXS-19P-HVROTOR

|

MXS-19P-PROTOR

|

MXS-19P-SEAL

MX25P|

MXS-25P-HTROTOR

|

MXS-25P-HVROTOR

|

MXS-25P-PROTOR

|

MXS-25P-SEAL

MX40P|

MXS-40P-HTROTOR

|

MXS-40P-HVROTOR

|

MXS-40P-PROTOR

|

MXS-40P-SEAL

MX50P|

MXS-50P-HTROTOR

|

MXS-50P-HVROTOR

|

MXS-50P-PROTOR

|

MXS-50P-SEAL

MX75P|

–

|

–

|

–

|

–

MX100P|

–

|

–

|

–

|

–

Category

“ S ”

|

ROTOR KIT

|

SEAL KIT

---|---|---

Standard

|

High Viscosity

|

PEEK

MX06S|

MXS-06S-ROTOR

|

–

|

–

|

MXS-06S-SEAL

MX09S|

MXS-09S-ROTOR

|

MXS-09S-HVROTOR

|

–

|

MXS-09S-SEAL

MX12S|

MXS-12S-ROTOR

|

MXS-12S-HVROTOR

|

–

|

MXS-12S-SEAL

MX19S|

MXS-19S-ROTOR

|

MXS-19S-HVROTOR

|

MXS-19S-PROTOR

|

MXS-19S-SEAL

MX25S|

MXS-25S-ROTOR

|

MXS-25S-HVROTOR

|

MXS-25S-PROTOR

|

MXS-25S-SEAL

MX40S|

MXS-40S-ROTOR

|

MXS-40S-HVROTOR

|

MXS-40S-PROTOR

|

MXS-40S-SEAL

MX50S|

MXS-50S-ROTOR

|

MXS-50S-HVROTOR

|

MXS-50S-PROTOR

|

MXS-50S-SEAL

MX75S|

MXS-75S-ROTOR

|

MXS-75S-HVROTOR

|

–

|

MXS-75S-SEAL

MX100S|

MXS-100S-ROTOR

|

MXS-100S-HVROTOR

|

–

|

MXS-100S-SEAL

– Currently Unavailable
To check for more service kits, Contact Macnaught.
Contact Macnaught for available display kits

PRESSURE DROP v VISCOSITY

DIMENSIONS

Flow Meters MX06 – MX50

Flow meter| A

(mm )

| B

Ø (mm )

| C

(mm )

| D

(mm )

| E

(mm)

---|---|---|---|---|---
MX06| 71| 74| 25| 42| N/A
MX09| 71| 74| 25| 42| N/A
MX12| 81| 87| 28| 49| N/A
MX19| 100| 112| 37| 62| N/A
MX25| 100| 112| 45| 75| 240
MX40| 120| 137| 61| 120| 240
MX50| 140| 153| 72| 123| 264*

FLANGE TYPES: ANSI flanges 150 # and DIN PN 16 flanges are raised faced (RF) while JIS 10k flanges are flat faced (FF) by default. Contact Macnaught if a different configuration is required.

Flow Meters MX75

Flow Meters MX100

Flowmeter Registers

WALL MOUNT ADAPTOR

(MX06 – MX25)

Meters

|

A

( Ø mm )

|

B

( Ø mm)

|

C

(mm)

|

D

(mm)

|

E

(mm)

|

F

(mm)

|

G

(mm)

|

H

( Ø mm)

|

I

(mm)

|

J

(mm)

|

K

( Ø mm)

---|---|---|---|---|---|---|---|---|---|---|---

MX06 – MX09

|

6

|

5.5

|

45

|

58

|

71

|

45

|

65

|

100

|

6

|

42

|

M5x0.8

MX12

|

6

|

5.5

|

47

|

69

|

81

|

47

|

73

|

113

|

6

|

49

|

M5x0.8

MX19

|

7

|

6.6

|

61

|

85

|

100

|

61

|

95

|

143

|

6

|

62

|

M6x1.0

MX25

|

7

|

6.6

|

61

|

85

|

100

|

61

|

95

|

143

|

6

|

75

|

M6x1.0

A Wall Mount Holes (4)
B SS Countersunk screws to be supplied with the wall mount bracket 5 mm in diameter and 16 mm in length for MX06 – MX12 meters 6 mm in diameter and 20 mm in length for MX19 – MX25 meters
K Earthing Point

WALL MOUNT THREAD POSITION ON FLOWMETER’S CAP (MX06 – MX50)

Meters	A	B	C	D
MX06	45	M5 x 0.80	45	42
MX09	45	M5 x 0.80	45	42
MX12	47	M5 x 0.80	47	49
MX19	61	M6 x 1.00	61	62
MX25	61	M6 x 1.00	61	75
MX40	80	M8 x 1.25	80	102
MX50	80	M8 x 1.25	100	123

B Mounting Holes x 4
Earthing Points x 4 (Any of them can be used)

EU Declaration of Conformity

Declaration of Conformity

(Simple Apparatus PCB)

WEEE Directive Waste Electrical and Electronic Equipment

The WEEE Directive requires the recycling of waste electrical and electronic equipment in the European Union.
Whilst the WEEE Directive does not apply to some of Macnaught’s products, we support its policy and ask you to be aware of how to dispose of this product.
The crossed out wheelie bin symbol illustrated and found on our products signifies that this product should not be disposed of in general waste or landfill.
Please contact your local dealer national distributor or Macnaught Technical Services for information on product disposal.

Note:
This product should be disposed of according to all applicable local and national government environment regulations and Macnaught USA 614 S. Ware Blvd Tampa, FL 33619
813-628-5506 MacnaughtUSA.com