MicroFlow-i
Instruction Manual
2
PULSAR MEASUREMENT
3
MicroFlow-i (SECOND EDITION REV 1)
April 2021
Part Number M-MFi-S-002-1P
COPYRIGHT
© Pulsar Measurement, 2017 -20. All rights reserved. No part of this publication may be
reproduced, transmitted, transcribed, stored in a retrieval system, or translated into any
language in any form without the written permission of Pulsar Process Measurement Limited.
WARRANTY AND LIABILITY
Pulsar Measurement guarantee for a period of 2 years from the date of delivery that it will
either exchange or repair any part of this product returned to Pulsar Process Measurement
Limited if it is found to be defective in material or workmanship, subject to the defect not being
due to unfair wear and tear, misuse, modification or alteration, accident, misapplication, or
negligence.
DISCLAIMER
Pulsar Measurement neither gives nor implies any process guarantee for this product and shall
have no liability in respect of any loss, injury or damage whatsoever arising out of the
application or use of any product or circuit described herein.
Every effort has been made to ensure accuracy of this documentation, but Pulsar Measurement
cannot be held liable for any errors.
Pulsar Measurement operates a policy of constant development and improvement and reserves
the right to amend technical details, as necessary.
The MicroFlow-i shown on the cover of this manual is used for illustrative purposes only and
may not be representative of the actual MicroFlow-i supplied.
CONTACT
For technical support, please contact:
Europe: supporteurope@pulsarmeasurement.com
Outside Europe: supportnorthamerica@pulsarmeasurement.com
If you have any comments or suggestions about this product, please contact:
Europe: europe@pulsarmeasurement.com
Outside Europe: northamerica@pulsarmeasurement.com
Pulsar Measurement website: www.pulsarmeasurement.com
United States
11451 Belcher Road South
Largo,
FL 33773
888-473-9546
Canada
16456 Sixsmith Drive
Long Sault, Ont.
K0C 1P0
855-300-9151
United Kingdom
Cardinal Building, Enigma
Commercial Centre
Sandy’s Road, Malvern
WR14 1JJ
00 44 (0)1684 891371
MICROFLOW-I INSTRUCTION MANUAL
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CONTENTS
Chapter 1: Start Here… ........................................................................................................... 6
About this Manual ............................................................................................................... 6
About the MicroFlow-i ....................................................................................................... 7
Benefits ..................................................................................................................................... 8
Functional Description ....................................................................................................... 8
Product Specification .......................................................................................................... 9
EU Certificate of Conformity ......................................................................................... 11
Chapter 2 Installation ........................................................................................................... 12
Unpacking ............................................................................................................................ 12
Power Supply Requirements......................................................................................... 12
Cable Screen and Earth Requirements ..................................................................... 12
Information specific to Hazardous Area Installation ........................................... 13
Location ................................................................................................................................ 18
Mounting .............................................................................................................................. 18
Angled Mounting Bracket.............................................................................................. 19
MicroFlow-i Sensor ........................................................................................................... 20
Terminal Connection Details ........................................................................................ 25
Chapter 3 Locating The MicroFlow-i .............................................................................. 26
Preparation for Operation ............................................................................................. 30
General Maintenance ...................................................................................................... 30
Sensor Maintenance. ....................................................................................................... 31
Chapter 4 Understanding How The MicroFlow-i Works ........................................ 33
MicroFlow-I HART compatible ..................................................................................... 33
4-20 mA Device ................................................................................................................. 33
Chapter 5 MicroFlow-i PC .................................................................................................. 34
Software installation ........................................................................................................ 34
Connecting to MicroFlow-i HART PC ........................................................................ 35
Flow Tab ................................................................................................................................ 37
Configuration ...................................................................................................................... 38
Parameter Get/Set ............................................................................................................ 38
PULSAR MEASUREMENT
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MicroFlow-i Manual Setting ......................................................................................... 39
4 – 20mA Trim .................................................................................................................... 40
Trace Tab .............................................................................................................................. 41
Comport ................................................................................................................................ 43
Language .............................................................................................................................. 43
Tools menu .......................................................................................................................... 43
Info .......................................................................................................................................... 44
Exit ........................................................................................................................................... 45
Chapter 6 Parameter Listing and Description ............................................................ 45
Parameter Access .............................................................................................................. 45
Device Information Parameters ................................................................................... 45
Processing Parameters .................................................................................................... 46
MicroFlow-i Firmware Upgrade ................................................................................... 50
MicroFlow-i HART Firmware Upgrade ...................................................................... 52
Chapter 7 Troubleshooting ................................................................................................ 54
Chapter 8 Disposal ................................................................................................................ 55
Notes .......................................................................................................................................... 56
MICROFLOW-I INSTRUCTION MANUAL
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CHAPTER 1: START HERE…
Congratulations on your purchase of a Pulsar MicroFlow-i. This quality
system has been developed over many years and represents the latest in
high technology flow monitoring.
It has been designed to give you years of trouble-free performance, and a
few minutes spent reading this operating manual will ensure that your
installation is as simple as possible.
About this Manual
It is important that this manual is referred to for correct installation and
operation. There are various parts of the manual that offer additional help
or information as shown.
Tips
Look for t h i s i con throu g ho u t y o ur Pulsar M e a s u r ement manual to
find hel p f u l information a n d answers t o f r eq uently asked q u estions .
Additional Information
References
See Also
References to other parts of the manual.
Additional Information
At various parts of the manual, you will find sections
like this that explain specific things in more detail.
PULSAR MEASUREMENT
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About the MicroFlow-i
The MicroFlow-i is a 2-wire loop-powered non-contacting velocity sensor,
with hazardous area approval. The sensor provides reliable flow velocity
measurements using short pulses of micro-waves, which are transmitted by
an enclosed antenna. When reflected off a moving surface, the signal
experiences a shift in frequency characteristics. The reflected signal is
captured by the on-board microprocessor via the antenna and analysed to
determine the velocity.
The MicroFlow-i’s compact and versatile design makes it easy to install and
ideal for confined spaces. Housed in a robust enclosure coupled with a fully
encapsulated microwave antenna, it provides an effective fit-and-forget flow
velocity solution.
Perfect for remote monitoring or when there is no mains power available,
due to its low power consumption. To access flow velocity data, use Pulsar’s
MicroFlow-i HART PC or HART protocol.
Overall, the device has outstanding stability, accuracy and repeatability.
MICROFLOW-I INSTRUCTION MANUAL
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Benefits
Combined with the ease of programming there are many other benefits to
using the MicroFlow, these are listed below:
• Non-contact velocity measurement.
• Loop powered and ideal for remote monitoring.
• Low-power consumption.
• Hazardous area approval (Ex ia) for Zone 0.
• ‘See through’ capability for enclosed plastic pipes and concrete (not
reinforced) channels.
• Suitable for abrasive and aggressive materials.
• Resilient to liquid vapour, wind or temperature.
• No minimum liquid level required for measurement
• Maintenance free.
• No interruption to operational flow.
• Can be installed in addition to existing in process contact measuring
devices.
• Easily setup using MicroFlow-i HART PC.
• The sensor is capable of monitoring flow of very shallow liquid,
mitigating the constraint associated with in-liquid techniques.
Functional Description
Based upon state-of-the-art micro-wave sensing technology, the MicroFlowi integrates Pulsar’s innovative and award-winning DSP (Digital Signal
Processing) platform, offering you a cost-effective solution with excellent
reliability and performance.
The Pulsar MicroFlow-i has been designed to provide maintenance free
performance. The MicroFlow-i is also intrinsically safe (Ex ia) for Zone 0. The
MicroFlow-i can be mounted via a rear 1” BSP to M20 thread adapter
(supplied with unit). The MicroFlow-i is loop powered and gives a 4 to 20mA
output which is proportional to the flow velocity. A ‘fault condition’ alarm
will give out a reading of either 3.8mA or 22mA.
The 2-wire sensor can either be used in digital HART mode or as 4-20mA
loop powered device. The MicroFlow-i loop powered version can be set up
using a HART modem with either proprietary HART software such as Pact
ware or Pulsar MicroFlow-i HART PC software.
Boot up time from power up to stable reading: cold boot 8.5 seconds, warm
boot 4 seconds (if within 12 hours from last start up).
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Product Specification
PHYSICAL
Sensor body material
Valox 357U
Mounting Connection
Via 1” BSP or NPT back mounted thread, 45º Angled
mounted bracket (optional) and M20 thread adaptor.
Mounting angle
45º optimum and mounted at the center line of the
channel, with clear uninterrupted flow.
Sensor dimensions
Diameter 90mm x height 140mm (3,54” x 5.51”)
Weight
0.7kg (1.54 lbs)
Transducer Cable Extensions
2-core screened
Maximum Separation
Up to 1000m (3,280 ft)
ENVIRONMENTAL
Enclosure protection
IP68
Max & min temperature
(electronics)
-20º to +60ºC (-4ºF to +140ºF)
APPROVALS
CE and Radar Approval
See EU Declaration of Conformity
ATEX Approval
CML 16ATEX2331X, IECEx CML 16.0105X
II 1 G Ex ia IIC T4 Ga
II 1 D Ex ia IIIC T1350C Da
PERFORMANCE
Velocity Range
0.2 – 6 m/s (0.66 ft/s – 19.7 ft/s)
Accuracy
Greater of +/- 0.5% or 0.05 m/s (0.1 ft/s)
Optimum Installation
Install at an angle of 45° in line with flow. For more
information, see ‘Locating the MicroFlow-i sensor’
section of this manual.
Max. channel width per sensor
1.5m
Radar
K-Band (ISM)
Transmit Power
<15 dBM
Beam width
20º inclusive
OUTPUTS
Communication
HART compatible, 4-20mA loop powered.
PROGRAMMING
PC programming
Via RS232
Programmed data integrity
Via non-volatile RAM, plus backup
PC Setup and monitoring
Software
MicroFlow PC – compatible with Win 7 (latest service
pack), Win 8, Win 10
MICROFLOW-I INSTRUCTION MANUAL
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SUPPLY
Operating voltage
10 – 28 VDC
Power Consumption
Start-up = 20mA. Average current = 60µA per hour
when one velocity measurement is performed every
15 minutes
Pulsar Measurement operates a policy of constant development and
improvement and reserve the right to amend technical details, as necessary.
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EU Certificate of Conformity
MICROFLOW-I INSTRUCTION MANUAL
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CHAPTER 2 INSTALLATION
Unpacking
Power Supply Requirements
The MicroFlow-i can operate from a DC supply of 10 to 28V. In all cases the
unit typically consumes 0.52W of power, and will typically draw less than
22mA.
Cable Screen and Earth Requirements
The MicroFlow-i comes with a fitted integral cable, if this cable is extended
then the total capacitance must not exceed the limits for the voltage
applied, and the hazardous area it is installed in.
The HART modem and PC or HART programmer are used to set up the
operation parameters for the MicroFlow-i sensor. The output can either be
as a 4-20mA current giving flow velocity or as a digital signal via a HART
master.
The MicroFlow-i cable is a twisted pair with an overall cable screen. The
twisted pair are red and black, connect the red to +ve and the black to the ve. The screen should go to signal ground.
Important Information
All shipping cartons should be opened carefully. When using a box cutter, do not
plunge the blade deeply into the box, as it could potentially cut or scratch
equipment components. Carefully remove equipment from each carton,
checking it against the packing list before discarding any packing material. If
there is any shortage or obvious shipping damage to the equipment, report it
immediately to Pulsar Process Measurement Limited.
Important Information
If the equipment is installed or used in a manner not specified in this manual,
then the protection provided by the equipment may be impaired
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Information specific to Hazardous Area Installation
(Reference European ATEX Directive 2014/34/EU)
The following instructions apply to equipment covered by certificate number
CML 16ATEX2331X
1. The equipment may be used with flammable gases and vapours with
apparatus groups IIC, IIB, and IIA with temperature classes; T4 ambient
temperature range -20oC to +60oC.
2. The equipment is only certified for use in ambient temperatures in the
range -20oC to +60oC and should not be used outside this range.
3. Installation shall be carried out in accordance with the applicable code
of practise by suitably trained personnel.
4. Repair of the equipment shall be carried out in accordance with the
acceptable code of practise.
5. Certification as detailed in drawing number D-804-1200 (Ex ia).
6. If the equipment is likely to encounter aggressive substances, then it is
the responsibility of the user to take suitable precautions that prevent it
from being adversely affected, thus ensuring that the type of protection
is not compromised.
Aggressive Substances: e.g., such as acidic liquids or gases that may
attack metals or solvents that may affect polymeric materials.
Suitable precautions: e.g., regular checks as part of routine
inspections or establishing from the materials data sheet that it is
resistant to specific chemicals.
7. The certificate number has an ‘X’ suffix that indicates that the following
special condition of certification applies. In the case of the MicroFlow-i
sensor, due to the housing and labels being non-conductive plastic care
needs to be taken with regards to electrostatic charge. The equipment
shall not be installed if the conditions are conductive to the build-up of
electrostatic charge. Additionally, the equipment should only be
cleaned with a damp cloth.
MICROFLOW-I INSTRUCTION MANUAL
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Limitations on use
1. The MicroFlow-i must be routinely inspected to avoid the build-up of
dust layers when installed in Zone 21 & Zone 22.
2. Electrostatic hazard – The MicroFlow-i must only be wiped with a damp
or antistatic cloth.
3. The outer enclosure is made from Valox357U, consider the performance
of this material with respect to chemicals that may be present in the
hazardous area.
Hazardous Area Specific Power Supply and barrier Requirements
The MicroFlow-i operates from a DC supply of 10 – 28VDC and will typically
draw less than 22mA.
When connecting the sensor to the PC software with a HART modem, it is
recommended to use a supply of at least 18VDC.
The MicroFlow-i cable is a twisted pair with overall cable screen. The twisted
pair is red and black, connect the red to +ve and the black to -ve. The
screen should go to signal ground.
Important Information
In the case of the Ex ia version, the sensor must be powered from an approved
I.S. safety barrier or approved I.S. power supply with the following limits:
Uo <= 28V, Io <= 162mA, Po <= 1.03W
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Typical wiring for the MicroFlow-i:
MICROFLOW-I INSTRUCTION MANUAL
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Important Information
If the equipment is installed or used in a manner not specified in this manual,
then the protection provided by the equipment may be impaired.
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Loop Resistance
For two wire operation, the maximum cable resistance allowable can be
calculated from the graph below. For example, if an dBi Series Intelligent
Transducer was supplied from 24V, the maximum total cable resistance is
600 ohms, for a typical 77 ohm /km cable this would mean a maximum cable
length of 600/77 = 7.8km, remember this total cable resistance, so this
figure must be divided by 2 to give 3.9km max distance.
Allowable total cable resistance for
Microflow-i
Total Cable resistance
Supply Voltage
MICROFLOW-I INSTRUCTION MANUAL
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Location
When choosing a location to mount the bracket and MicroFlow, note the
following:
• For optimum readings, it is recommended that the MicroFlow should
be positioned at a 45° angle to the surface of the material being
measured.
• The mounting surface must be vibration-free.
• The ambient temperature should be between -20ºC and 60ºC.
Mounting
For the best results it is highly recommended to use the MicroFlow-i angled
bracket, which is available from your Pulsar distributor, which will ensure that
the MicroFlow-i can be correctly installed. The bracket can be used if the
MicroFlow-i sensor is to be mounted on its own in a specific location or
along with a Pulsar dBi or dB level transducer. Please see ‘Angled
Mounting Bracket’ for dimensions of this bracket, please note that the
drawing is not to scale.
‘Mounting sensor to a bracket’ illustrates how you would install the sensor
to one of Pulsar’s angled brackets.
The MicroFlow-i angled bracket should be mounted by marking and drilling
the holes suitable for fixing your screws/bolts (length to suit your
application) and then fixing the bracket in place.
Important Information
All electronic products are susceptible to electrostatic shock, so follow proper
grounding procedures during installation.
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Angled Mounting Bracket
Part number: dBA0008MF
45
o
Side view
176mm
22mm
R20mm
12mm
100mm
90mm
130mm
Top view
MICROFLOW-I INSTRUCTION MANUAL
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R20mm
4 off 12mm
100mm
60mm
20mm
20mm
100mm
60mm
26mm
Rear view
Important Information
Using a spirit level, ensure that the Mounting Bracket is level before attaching
the sensor to the bracket.
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MicroFlow-i Sensor
The dimensions of the sensor body are shown below in Fig.1 and Fig.2:
DON’T FORGET
90 mm
1” BSP
78 mm
39mm
140 mm
73 mm
M i
45°
Surface of measurement
Green ‘Dot’ to be
positioned on top of sensor.
To obtain the most accurate results, ensure the device is mounted at a 45° angle
to the surface being measured.
MICROFLOW-I INSTRUCTION MANUAL
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Mounting sensor to a bracket
Mounting the sensor to the 45° angled bracket is done via an adapter and
M20 nut, as shown in Fig.3:
For correct installation, we recommend that the adapter is threaded on the
cable, and carefully screwed onto the MicroFlow-i before fitting to the
bracket. This will reduce the risk of any ’twisting’ in the cable.
Ensure that the sensor is tightened, and the dot is in the correct position.
Bracket
Adapter
Fig.3
Cable
M20 Nut
Green dot to be
displayed on top
Important Information
When fixing the sensor to the adapter, ensure that care is taken when pulling the
sensor cable through. And once attached to the adapter, and the M20 nut is
tightened, the green dot should be central to the movement of flow as shown in
Fig.4.
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Care should be taken not to overtighten the sensor when everything is
connected, as seen in Fig.5 below, as this could cause damage to the
housing.
M
Central to the movement
of flow in channel.
Fig.4
Fig.5
305mm
215mm
205mm
MICROFLOW-I INSTRUCTION MANUAL
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When the sensor is mounted on the bracket with dB series level transducer,
you can position the bracket in a way where the MicroFlow-i is obtaining
measurements following the direction of the flow, or facing the direction of
flow. Fig.6 and Fig.7 illustrate the correct positioning of the devices
according to the direction of flow:
Direction of flow
Fig.6
Green dot to be
displayed on top
Direction of flow
Fig.7
Green dot to be
displayed on top
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Terminal Connection Details
Power
The MicroFlow-i operates from a DC voltage supply of 10-28 volts, and
should be installed and connected in accordance with ‘Chapter 2–Power
supply requirements’ and the instructions below. When wiring the
MicroFlow-i the cable used is of a multicore design. The wire coding is
shown below for ease of use when connecting the MicroFlow-i to monitor
flow velocity:
You can also use Pulsar’s MicroFlow-i HART PC software to interrogate and
obtain readings from the device. Please refer to Chapter 6 MicroFlow-i
HART PC for more details on how to use it.
MicroFlow-i cable
110 mm
Heat Shrink
Power +10-28 VDC (Red cable)
0 Volts (Black cable)
Screen (Green cable)
Important Information
If the equipment is installed or used in a manner not specified in this manual,
then the protection provided by the equipment may be impaired.
MICROFLOW-I INSTRUCTION MANUAL
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CHAPTER 3 LOCATING THE MICROFLOW-I
For optimum accuracy install the MicroFlow-i where the flow is not
turbulent. An ideal location for the sensor is in the centre of a long straight
channel. Vertical drops, baffles, curves, or junctions can cause the velocity
profile to be distorted.
To obtain optimum results in readings, the MicroFlow-i sensor requires
surface ripples to be present to provide a reliable measurement. If there are
not any surface ripples within the sensors field of view under ant flow
conditions, then an alternative measurement point should be found, or
ripples created.
Locating the MicroFlow-i
• If the width of the channel exceeds 1.5m. Multiple MicroFlow-i sensors
are required to be used in conjunction with the Ultimate Controller with
firmware version 1.5.2 and later.
• When a level measurement transducer is used and mounted on the
same bracket as the MicroFlow-i. Consider the ‘blanking’ distance of
the transducer when mounting the bracket for the application.
• Ensure that there is an unobstructed path between the sensor and the
surface of the moving liquid being measured.
• Position the sensor at a height of 250mm above maximum liquid level
or up to two times the channel width from the minimum liquid level,
whichever is greater. As shown in Fig.8 below:
• A = Minimum 250mm above Maximum Liquid level.
• B = Maximum 3m above Minimum Liquid Level.
Fig.8
B
A
Max Liquid
Level
Min Liquid
Level
MicroFlow-i
PULSAR MEASUREMENT
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In the instance where there are vertical drops, baffles, curves or
junctions. The sensor should then be positioned on a straight part of
the channel, at a minimum distance that is at least five times the width
of the channel before a bend, to obtain optimal velocity readings.
Examples of positioning the sensor are shown in diagrams 1 - 4 below:
Important Information
If the maximum water height exceeds 2x width of the channel, OR
If the maximum water height in channel is less than 50% of the width of the
channel. Please consult Pulsar product support for assistance.
Distance
Distance
Diagram 1
Distance
Diagram 2
MICROFLOW-I INSTRUCTION MANUAL
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Diagram 3
Distance
Distance
Distance
Distance
Diagram 4
PULSAR MEASUREMENT
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Installing the Sensor
• The Sensor housing is designed to accept a 1-inch BSP female
threaded coupler for pipe or conduit.
• Ensure that the sensor is positioned at a 45° angle to the surface of the
measured application, as this will achieve the best results. An example
of this is shown in the diagram below:
• When using one of the Pulsar Angled Mounting Brackets, secure the
bracket using the correct size screws/bolts/U-bolts (12mm diameter
thread).
• Tighten the sensor into the bend, and then screw the thread adapter
onto the bracket using the nut supplied. CAUTION: extreme over-
tightening may crack or cause damage to the unit or bracket.
• Position the sensor so the green ‘dot’ that is shown on the label
between the two green arrows is on the top of the device, and is
central to the movement of flow in the channel.
• If desired, the sensor cable may be extended up to a maximum of
100m. Install the sensor cables in grounded metal conduit. Do not
run-in cable trays or duct banks with variable frequency drives or other
high voltage sources.
• When extending cable for a MicroFlow-i sensor, ensure that all wiring
in any junction /connector boxes are correct
• When connecting multiple MicroFlow-i sensors for use with the
Ultimate controller. Ensure that all wiring in any junction /connector
box is correct.
45°
Surface of measurement
Green dot to be
displayed on top
MICROFLOW-I INSTRUCTION MANUAL
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• The sensor can be positioned to obtain readings following the
direction of the flow. Or it can be positioned to measure the
oncoming flow as seen below:
Preparation for Operation
Before switching on, ensure that the following is checked:
✓ MicroFlow-i is mounted correctly and is secure.
✓ All wiring is correct to a Pulsar controller.
✓ The power supply is correctly installed.
General Maintenance
There are no user serviceable parts inside MicroFlow-i. If you experience any
problems with the unit, then please contact Pulsar Process Measurement for
advice.
To clean the equipment, wipe with a damp cloth. Do not use any solvents on
the enclosure.
MicroFlow-i obtaining readings
following the direction of the
flow.
MicroFlow-i obtaining readings
from the oncoming direction of
the flow.
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Sensor Maintenance.
Procedure for the Removal of a MicroFlow-i Sensor
From time to time, it may be necessary to remove the sensor for cleaning or
maintenance purposes, the below procedure is to ensure that this is done
carefully with regard for the health and safety of the operator involved, and
without damage to the sensor.
If it is necessary to replace the sensor for any reason, the following
procedure should be followed:
• Disconnect the power supply to the sensor.
• Remove any fittings that the sensor may be attached to, allowing the
cable to be pulled through with ease.
• If using a Pulsar angled bracket, the sensor head is mounted onto the
end of the bend via its process fitting, this should be carefully
unscrewed in an anticlockwise direction. Ensure that the sensor is not
dropped or knocked as this can cause damage to the unit.
• When replacing the sensor, care must be taken not to over tighten the
unit as this can cause damage. Hand tight is sufficient.
• Ensure that the green dot has been positioned in the direction of the
flow of the vessel, this will obtain optimum velocity readings that are
available. Please refer to ‘Fig.3’ in ‘Chapter 2-Installing the sensor’
section on how to do this.
• When the sensor has been replaced for the application, and re-
connected to a controller and the power re-applied, the unit will reinitialise and will begin the process of acquiring flow and velocity
readings.
• When refitting or replacing a sensor, ensure that it is installed in
accordance with ‘Chapter 2-Mounting a sensor to a bracket’.
• When replacing the sensor for a new one, you can use MicroFlow-i
HART PC to upload any changed parameters from your old sensor to
the new sensor. Allowing continued use of the sensor which is setup
Important Information
Before attempting to remove the sensor for cleaning or any other purpose, the
power to the unit should be disconnected.
MICROFLOW-I INSTRUCTION MANUAL
32
for your application.MicroFlow protocol. Allowing you to continue use
without the need to change any parameters.
The correct PPE should be worn on site when performing maintenance on
the system, if in doubt please contact your site Health and Safety Officer for
further advice.
To remove the sensor, first loosen any glands, couplers etc. that may
connect it to the Mounting Bracket, and then lift the sensor body onto a safe
place. Taking care not to damage the sensor housing or cable whilst
performing this removal.
The sensor can then be safely inspected for damage or material fouling and
can be carefully cleaned with a damp cloth to remove any foreign debris.
Important Information
Care should be taken when removing and cleaning to not damage the device.
PULSAR MEASUREMENT
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CHAPTER 4 UNDERSTANDING HOW THE MICROFLOW-I
WORKS
To initially set up the MicroFlow-i (if required) to obtain readings from your
application, it is advised to do this using MicroFlow-i HART PC.
Once the MicroFlow-i has been powered up, you can now begin to obtain
flow velocity from the sensor.
MicroFlow-I HART compatible
The MicroFlow-i uses a unique protocol which enables it to be compatible to
any HART controller that it is connected to, the HART address is ‘0’.
4-20 mA Device
The MicroFlow-i can be used as an ‘out of the box’ 4 – 20mA device, this is
the case, by default when you switch the sensor on. The 4 – 20mA output is
proportional to the flow velocity being seen, with respect to the maximum
range of the sensor up to 6 m/s (19.7 ft/s).
To enable the MicroFlow-I to work successfully, ensure that the power is
disconnected prior to a connection being made
Important Information
Care should be taken when removing and cleaning to not damage the device.
MICROFLOW-I INSTRUCTION MANUAL
34
CHAPTER 5 MICROFLOW-I PC
The software that accompanies the MicroFlow-i can be used to access and
change all parameters via the HART modem, test, obtain and record trace
readings from a sensor. To utilise the features of the software, a USB HART
modem which is available from Pulsar (as shown in Fig.9 below), is required to
communicate between the sensor and your machine.
Software installation
Insert the CD that accompanies the MicroFlow-i sensor into your PC/Laptop. If
you do not have a CD drive on your laptop, then this software can be
downloaded from the Pulsar Process Measurement website:
https://pulsarmeasurement.com/downloads/software/ and choose to
download MicroFlow-i HART PC from the list which will then be downloaded
onto your machine.
When setting up the HART modem for the first use, you will need to install the
necessary drivers for it to operate correctly with your OS. These drivers can be
installed from your installation disc. Run the MicroFlow-i HART PC Setup.exe
from the CD, or from the downloaded file from our website to install the
MicroFlow-i HART PC software correctly, which will automatically install the
necessary drivers for your HART modem. A shortcut icon will be created onto
your Desktop for ease of use. Double click on this icon to launch the program.
Important Information
For optimum installation insert your HART modem to your PC whilst installing
MicroFlow-i HART PC, where your PC should then assign the modem to a Com
Port. Or if you have an internet connection, upon inserting the USB of the HART
modem for the first time, Windows updates should install this onto your
computer for you. Once the driver’s installation has completed, remove the
HART modem from your machine. Your modem is ready to be used when a
connection to MicroFlow-i PC is required.
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Connecting to MicroFlow-i HART PC
When connecting to the software using the HART modem, power to the
sensor can be obtained from a 10-28VDC source.
To enable the MicroFlow-i to work correctly please ensure that the sensor is
wired as shown in the picture below:
To enable the sensor to work correctly, the power (red) cables from the
supply and to the MicroFlow-i must be wired in series with the 250 Ohm
resistor (as seen in the above picture).
Once the sensor is connected to the HART modem, insert the USB into the
PC/laptop ready for use. You can now use MicroFlow-i HART PC to change
settings of the sensor to suit your application.
To make a connection to the MicroFlow-i sensor, supply power to the sensor
and then select the button which will change to
‘Scanning’ and the following pop-up windows will appear during an initial
connection:
Power (+) to MicroFlow-i
(Red cable)
0V to MicroFlow-i (Black cable)
Power (+) from supply
(Red cable)
0V from supply
(Black cable)
250 Ohm
resistor
Important Information
Ensure that power to the sensor is switched ‘OFF’ before removing cables and
any connection is made.
Connector
MICROFLOW-I INSTRUCTION MANUAL
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Once the MicroFlow-i parameters have been retrieved successfully, the
status condition will then appear as:
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If the sensor fails to connect to the software, please check that the Comport
has been correctly set (details of how to do this is outlined in this chapter).
After launching the program and connecting to the MicroFlow-i, the device’s
parameters will be automatically extracted once a connection is established.
Once connected you can now view the information received from the sensor
on the Software’s individual tabs: Flow, Configuration and Trace.
appears after a connection is established, selecting this will
then disconnect the MicroFlow-i.
Flow Tab
The above picture is an example of the default screen of MicroFlow-i HART
PC, which is the Flow tab. The dial on the left displays the linear flow
velocity of a maximum up to 6m/s (19.7 ft/s). While the numerical display on
the right shows the velocity flow rate and the current mA reading.
Signal Strength
The signal strength gives an indication of the actual strength of the velocity
signal detected. A level of higher than 70% is desired for reliable operation.
MICROFLOW-I INSTRUCTION MANUAL
38
Stability
The stability level is an indication of the consistency of flow reading, as
derived from the combination of signal strength and statistical fluctuations
of the flow reading. A high level of stability would indicate optimum
condition, and relatively healthy flow within the channel and indicate higher
levels of repeatability and better flow tracking. The stability does not
necessarily indicate the accuracy of the flow reading, as this is subject to
calibration.
Configuration
Parameter Get/Set
This feature allows you to obtain and change parameter values from the list
available. Further information of these parameters and their values can be
found in Chapter 7 – Parameter Listing and Descriptions.
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Default:
When selected, this will display the current parameters default value.
Selecting ‘Set’ will change the parameters value to that of its default value.
Set:
Allows the value of the selected parameter to be changed. Select the
desired parameter from the drop down ‘Parameter’ box, enter the required
value and select ‘Set’. The value box will turn green when the change of
parameter value has been successfully carried out.
MicroFlow-i Manual Setting
The option for manually setting the parameters can be done by utilising the
Manual Setting terminal, as shown below:
This feature is also available when the sensor has been set into ‘Program
mode’, where all if the MicroFlow-i parameters can be queried by entering
the parameter address in the Parameter field and then clicking on the ‘Get’
button. The MicroFlow-i will then reply with the current value of that
parameter.
Selecting ‘Get’ will read and display the current value of the MicroFlow-i
parameter selected. When ‘selected, within the terminal box you will see a
command appear, example <</p102 as the software queries the chosen
parameter. The unit will reply with the parameter and its current value,
example: ==/p102:120
Selecting ‘Set’ allows the value of the selected MicroFlow-i parameter to be
changed, both the address and value must be entered before clicking on the
button. <</p102:100 will show the parameter number and the value you
have changed in the manual setting box. And ==/p102:140 will appear
when the change of the parameter and its value is complete. The
appropriate access levels are required for setting parameters.
MICROFLOW-I INSTRUCTION MANUAL
40
The values need to be valid and within the allowed range for that parameter
for the change to be successful. Please refer to ‘Chapter 7 Parameter
listing and Descriptions’ in this manual, on the parameters available and
the range each one can be set between. If a parameter has been incorrectly
set, choose the parameter from the options in ‘Parameter Get/Set’ and select
the default button to display the default value for that parameter. Pressing
set will revert the parameter to its default value.
4 – 20mA Trim
This feature is only available to use when the sensor has been set to ‘Run
mode’, the options will then no longer be greyed out and will now be
available to use.
If the device connected to the mA output is out of calibration, and is unable
to be calibrated. Then the low and high current levels can be calibrated by
altering ‘Set 4mA’ (Low Trim) and ‘Set 20mA’ (High Trim). It is advised that
to carry out calibration, that a Digital Multi Meter (DMM) is used, so that
4mA or 20mA respectively are shown on the device.
Calibrating 4mA
To calibrate the 4mA, type in ‘4’ in the ‘Constant mA’ value box and press
‘Send’. If the low value reading is incorrect, then it can be trimmed using
the ‘Set 4mA’ option. Enter the offset directly into the value box and then
select the ‘Set 4mA’ button to enable you to get the expected result
(reading).
Calibrating 20mA
To calibrate the 20mA, type in ‘20’ in the ‘Constant mA’ value box and press
‘Send’. If the high value reading is incorrect, then it can be trimmed using
the ‘Set 20mA’ option. Enter the offset directly into the value box and then
select ‘Set 20mA’ button to enable you to get the expected result (reading).
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Resume mA
When calibration is complete, to release the constant mA reading select
‘Resume mA’ which will return you to normal measurement/mA output
readings. If this is not selected when calibration is complete, then your mA
output will not be updated.
Trace Tab
Upon opening the trace tab, the information at the bottom of the screen will
scroll through Measurement in progress, updating mA, Updating Trace. Once
the trace has updated the diagnostic traces from the sensor will be
displayed. You are also able to see the current velocity measurement
obtained by the sensor.
The vertical axis is related to the signal strength, while the horizontal axis is
related to the detected flow.
MICROFLOW-I INSTRUCTION MANUAL
42
When a signal is received, the ‘green square indicator’ will move down
from 10 on the vertical axis. The further the ‘green square indicator’ moves
from 10, the larger the strength of the received signal. During flow
condition, the ‘green square indicator’ will normally be within the range of
30 to 70. Under no-flow conditions the ‘green square indicator’ will remain
at 10.
When flow is detected, the ‘red circle indicator’ will move horizontally to
indicate flow detection. The ‘red circle indicator’ should stay at 0 under no-
flow conditions, and move along the horizontal axis when flow is detected.
Under flow condition, the line should still approach and flatten out at just
below the signal index 10 line. If the trace remains flat or the indicators
struggle to remain stable during flow, then increase the ‘Gain’ (P102) setting.
You can zoom in by clicking and holding the mouse to draw a box over the
region to zoom in on. Zooming out can be done by right clicking on the
chart and selecting “Undo All Zoom”.
Record Traces
To record traces and the current velocity, select the button and
enter a site ID when prompted to do so. The record button will then change
to green whilst the software is recording the data from the sensor. A new
trace will be recorded when Updating Trace…. is shown in the status box.
Replay Traces
To replay trace and velocity data, the sensor needs to be disconnected from
the software. Select the button and a prompt will appear to
choose the data file you wish to play. The replay button will change to
green whilst the software is replaying the data. During replay select the
replay button again to stop.
Record
Replay
Important Information
Traces will only be recorded whilst the trace screen is displayed. Upon leaving
the trace screen, a message will appear to inform you of this. Returning to the
trace screen will resume recording of the trace data.
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Comport
If MicroFlow-i PC fails to connect to the sensor, the status condition will
appear as below:
You will need to change the communications port that is being used. To do
this, select ‘Comport’ from the top menu bar and the Comm Port setup
window will appear, as seen below:
From the drop-down box select the Comport that has been assigned to your
HART modem, then press select and then close. Comport assignments can
be viewed in the Device Manager area of Microsoft Windows.
Your Comport information will then appear at the bottom of the MicroFlow-i
HART PC: .
Language
This menu allows you to select the language you wish to view the
information on the software in the language option selected.
Tools menu
This menu option allows you to choose the following options:
Convert Logs to CSV
This allows you to export a saved data file (.MLG only) into CSV format. And
once opened in Excel, the information recorded in this file can be viewed
and each section is labelled at the top of the row: Date, Time, Velocity
COM 8 1200 8 Odd
MICROFLOW-I INSTRUCTION MANUAL
44
(m/s), Signal Strength and Stability. This information from the MicroFlowi can then be placed into a chart/graph format.
Change Work Folder
This will allow you to select the default folder for where the trace data files
are to be saved to.
Run HART Bootloader Control
This function allows you to reprogram the sensor with HART firmware, and
should only be accessed by service personnel or under the guidance of
Pulsar service engineers.
Run Bootloader Control
This function allows you to reprogram the sensor with MicroFlow-i firmware,
and should only be accessed by service personnel or under the guidance of
Pulsar service engineers.
Set Program mode
This allows you to interrogate the sensor and make changes to its
parameters, and view traces from the sensor. Whilst in program mode, the
mA output will automatically change to high (20mA) allowing the change of
parameters to be completed quickly and efficiently. However, the
MicroFlow-i will continue to monitor and display any change in velocity and
mA readings on the Flow tab.
Set Run mode
This mode is used once the MicroFlow-i has been set up in program mode.
It is also the default mode that the sensor is in when a connection is made
for the first time to a device, or after a power failure. In run mode no
parameters can be changed, and all current readings are reported, and you
are able to adjust the 4 – 20mA Trim.
Info
This menu option allows you to choose the following options:
PC Software
This allows you to view the current version of MicroFlow-i HART PC being
used.
MicroFlow-i Firmware
When connected to a MicroFlow-i sensor, the information regarding the
firmware. Hardware and serial number currently connected is displayed here.
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Exit
Disconnects the sensor (leaving it in program mode) and closes MicroFlow-i
HART PC.
CHAPTER 6 PARAMETER LISTING AND DESCRIPTION
Parameter Access
All the MicroFlow-i parameters have factory default values which the user
receives upon first use, or when the sensor is reset. The parameters consist
of two main types: Device information and Processing parameters.
Device parameters are read only and cannot be set by the user, such as the
serial number of the sensor. Processing parameters can be queried and set,
there is also an associated access level required for setting, either ‘User’ or
‘Service’. Upon connection to a MicroFlow-i, the access level is defaulted to
‘User’.
The parameters are always stored and entered as whole numbers, please
refer to the individual parameter for its individual value range.
Device Information Parameters
These parameters are read-only.
NAME
PARAMETER
NO.
DESCRIPTION
Serial Number
240 & 241
Registers 240 & 241 form a 32-bit number.
Register 240 = Most significant 16-bit.
Register 241 = Least significant 16-bit.
Firmware ID
261
A number associated with the version of
firmware that is currently programmed
onto the sensor.
Hardware ID
262
A number associated with the version of
hardware that is currently used with the
sensor
MICROFLOW-I INSTRUCTION MANUAL
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Processing Parameters
These parameters relate to the detection and processing of the flow velocity
signal.
NAME
PAR
NO.
OPTIONS
DEFAULT
NOTES
Gain
102
100 – 1600
120
Used to enter a fixed gain
(sensitivity) value, a higher
number means higher gain.
Quick
Response
Damping
Factor
104
10 -999
750
When P113=1, this damping
factor will be applied. When
P113=0, measurement will
only be damped by P109 the
main damping factor.
Cal Factor
108
1 – 500
100
In percentage terms, default
is 100, for 100%. 50% would
half and 200% would double.
High/Main
Damping
109
0 – 28
0
This sets the damping factor
by adding to P104. A higher
number represents more
damping.
Step
Response
Mode
113
0 = Off
1 = On
1
When turned off, no damping
bypass will be performed.
Low
Damping
Persist
115
1 – 100
1
This is the number of
measurements that the
sensor acquires, before
switching into damping
mode.
High
Damping
Persist
116
1 – 100
1
This is the number of
measurements that the
sensor acquires, before
switching into Step Response
Mode.
No Signal
Persist
117
1 – 100
2
This is the number of nonmeasurement to persist
before the sensor sees a state
of no signal.
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NAME
PAR
NO.
OPTIONS
DEFAULT
NOTES
Signal
Present
Persist
118
1 -100
2
This is the number of
measurements that need to
persist for there to be a
signal present state.
Minimum
Flow Cutoff
120
10 – 4000
150
In units of mm/s velocity for
user input, to set the
minimum flow velocity
present.
Response
125
0 = Instant
1 = Moderate
2 = Damped
Instant
Changing this to ‘Instant’
will automatically calibrate
parameters in the sensor to
track measurements faster.
This is recommended for
Pumped flow. ‘Damped’ is
recommended when there
is natural flow, as
measurements will be
tracked at a slower pace.
Multipoint
Calibration
@ 0.2 m/s
152
5 – 500
100
In percentage terms, default
is 100, for 100%. 50%
would half and 200% would
double.
Multipoint
Calibration
@ 0.4 m/s
153
5 – 500
100
In percentage terms, default
is 100, for 100%. 50%
would half and 200% would
double.
Multipoint
Calibration
@ 0.8 m/s
154
5 – 500
100
In percentage terms, default
is 100, for 100%. 50%
would half and 200% would
double.
Multipoint
Calibration
@ 1.5 m/s
155
5 – 500
100
In percentage terms, default
is 100, for 100%. 50%
would half and 200% would
double.
Multipoint
Calibration
@ 3.0 m/s
156
5 – 500
100
In percentage terms, default
is 100, for 100%. 50%
would half and 200% would
double.
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NAME
PAR
NO.
OPTIONS
DEFAULT
NOTES
Multipoint
Calibration
@ 5.0 m/s
157
5 – 500
100
In percentage terms, default
is 100, for 100%. 50%
would half and 200% would
double.
Multipoint
calibration
mode
158
0 = Off
1 = On
1
Turns multipoint calibration
on and off
Simulated
flow mode
288
0 = Off
1 = On
Off
Switch simulated flow on or
off.
Simulated
flow velocity
mm/s
289
0 – 4000
0
This sets the flow velocity in
mm/s, which can be used to
simulate velocity and mA
readings.
Sensor Reset
297
7 = Default
0
This resets all MicroFlow-i
parameters to their default
values. (It does not affect
any mA Trims applied).
Both P834 and P835 are used for spanning the mA output, by default the 420 mA output span is 0 – 6 m/s. Below are some examples of the
parameters use:
Example 1: 0 – 3m/s span over 4 – 20 mA. Set P835 to 3 (m/s).
Example 2: 0 – 6m/s span over 4 – 12mA. Set P835 to 12 (m/s).
Example 3: 0 – 6m/s span over 20 – 4 mA. Set P834 to 6 (m/s) and
set P835 to 0 (m/s).
Example 4: 0 – 6m/s over 8 – 20 mA. Set P834 to -2 (m/s).
Important Information
Traces will only be recorded whilst the trace screen is displayed. Upon leaving
the trace screen, a message will appear to inform you of this. Returning to the
trace screen will resume recording of the trace data.
If using the MicroFlow-i on an application where Flow type is changed to ‘Fast’,
this will reduce the damping to obtain better results. If there is natural flow and
‘Slow’ is chosen, then damping is increased to obtain better results.
MICROFLOW-I INSTRUCTION MANUAL
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MicroFlow-i Firmware Upgrade
Firmware upgrades are performed in ‘Bootloader’ mode, and require service
level access. Note: It is advised that reprogramming is carried out by Pulsar
service personnel. Also, all flow measurement and output operation will be
halted when the sensor is in the ‘Bootloader’.
Please follow these steps to reprogram a sensor MicroFlow-i firmware:
1. Please ensure that the sensor is connected to a PC via the HART
modem. Prior to reprogramming, you will need the MicroFlow-i
firmware file, and the COM port number of the modem.
2. Establish a connection to the sensor.
3. You will require Service access to Run Bootloader Control.
4. Select Tools > Run Bootloader Control, which will then open the
Bootloader control interface window as seen in Fig.10.
5. Once connected click ‘Load Hex file’, and choose the firmware file
you are using to upgrade the sensor.
6. Click ‘Erase-Program-Verify’, and wait for the process to finish.
7. When the ‘Verification Successful’ message is displayed, click ‘Run
firmware’ and the Bootloader Interface will close.
8. Select the ‘Search’ button on the software, and the sensor will
reconnect to MicroFlow-i HART PC with the new HART firmware
installed.
Important Information
It is important to know that it takes approximately 60 minutes to reprogram a
sensor with MicroFlow-i firmware successfully.
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Important Information
Do not switch off supply to the unit or close the software down during the
firmware upgrade.
MICROFLOW-I INSTRUCTION MANUAL
52
MicroFlow-i HART Firmware Upgrade
1. Please ensure that the sensor is connected to a PC via the HART
modem. Prior to reprogramming, you will need the HART firmware file,
and the COM port number of the modem.
2. Establish a connection to the sensor.
3. You will require Service access to Run HART Bootloader Control.
4. Select Tools > Run HART Bootloader Control, which will then open the
Bootloader control interface window as seen in Fig.11.
5. Once connected click File’, and choose the firmware file you are using
to upgrade the sensor.
6. Click ‘Re-Program’, turn the sensor off and on again when prompted to
do so by the Bootloader control and then wait for the process to finish.
7. When the ‘Program File OK now rebooting’ message is displayed, you
can close the HART Bootloader and reconnect to the PC software.
8. Select the ‘Search’ button on the software, and the sensor will
reconnect to MicroFlow-i HART PC with the new HART firmware
installed.
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Important Information
Do not switch off supply to the unit or close the software down during the
firmware upgrade.
MICROFLOW-I INSTRUCTION MANUAL
54
CHAPTER 7 TROUBLESHOOTING
This section describes many common symptoms, with suggestions as to
what to do. If the issue persists, please contact your local Pulsar distributor.
SYMPTOM
WHAT TO DO
Currently velocity reads zero, but
you know that there is flow
movement.
Ensure that the sensor is mounted correctly
in accordance with Chapter 2.
Current velocity reading is
higher/lower than known
movement of flow
Check that the sensor is mounted correctly.
Adjust the Gain (P102) or Damping (P109)
parameters to obtain correct
measurements.
Unable to connect to MicroFlow-i
HART PC
Check that wiring to the modem is correct.
Close MicroFlow-i HART PC software, cycle
power on the sensor and re-open the
software. Ensure that the correct Com port
has been set and retry connection.
Sensor remains at a high mA out
reading (20mA)
Ensure that Simulation mode (P288) is set
to 0 = Off.
Ensure that ‘Resume mA’ has been selected
if in Run mode.
Important Information
If you experience any issues with our equipment, then please contact your local
Pulsar Distributor for assistance.
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CHAPTER 8 DISPOSAL
Incorrect disposal can cause adverse effects to the environment.
Dispose of the device components and packaging material in accordance
with regional environmental regulations including regulations for electrical \
electronic products.
Transducers
Remove power, disconnect the Transducer, cut off the electrical cable and
dispose of cable and Transducer in accordance with regional environmental
regulations for electrical \ electronic products.
Controllers
Remove power, disconnect the Controller, and remove battery (if fitted).
Dispose of Controller in accordance with regional environmental regulations
for electrical \ electronic products.
Dispose of batteries in accordance with regional environmental regulations
for batteries.
EU WEEE Directive Logo
This symbol indicates the requirements of Directive 2012/19/EU regarding
the treatment and disposal of waste from electric and electronic equipment.
MICROFLOW-I INSTRUCTION MANUAL
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NOTES
PULSAR MEASUREMENT
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www.pulsarmeasurement.com
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Copyright © 2020 Pulsar Measurement Ltd.
Registered Address: 1 Chamberlain Square CS, Birmingham B3 3AX
Registered No.: 3345604 England & Wales
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