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1
MicroFlow
Instruction Manual
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MICROFLOW INSTRUCTION MANUAL
2
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PULSAR MEASUREMENT
3
MicroFlow (SECOND EDITION REV 1)
February 2021
Part Number M-dRF-S-002-1P
COPYRIGHT
© Pulsar Measurement, 2015 -2021. 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 shown on the cover of this manual is used for illustrative purposes only and may
not be representative of the actual MicroFlow 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
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CONTENTS
Chapter 1: Start Here… ........................................................................................................... 6
About this Manual ............................................................................................................... 6
About the MicroFlow .......................................................................................................... 7
Functional Description ....................................................................................................... 8
Product Specification .......................................................................................................... 9
EU Certificate of Conformity ......................................................................................... 11
Chapter 2 Power Supply Requirements ........................................................................ 12
Unpacking ............................................................................................................................ 12
Power Supply Requirements......................................................................................... 12
Cable Screen and Earth Requirements ..................................................................... 12
Location ................................................................................................................................ 13
Mounting .............................................................................................................................. 13
Angled Mounting Bracket.............................................................................................. 14
MicroFlow Sensor .............................................................................................................. 15
Terminal Connection Details ........................................................................................ 20
FlowCERT Wall Mount ..................................................................................................... 21
Velocity Interface ............................................................................................................... 22
Ultimate Controller (Fascia) ........................................................................................... 23
Ultimate Controller (Wall Mount) ............................................................................... 25
Chapter 3 Locating The MicroFlow ................................................................................. 27
Hazardous area Installation .......................................................................................... 28
Preparation for Operation ............................................................................................. 33
General Maintenance ...................................................................................................... 33
Sensor Maintenance. ....................................................................................................... 34
Chapter 4 Understanding How The MicroFlow Works ........................................... 36
Measuring streamflow / open channel flow ........................................................... 36
MicroFlow Protocol .......................................................................................................... 37
Chapter 5 Setting Up The MicroFlow ............................................................................ 38
FlowCERT Setup ................................................................................................................. 38
Velocity Interface setup .................................................................................................. 39
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Ultimate Controller Fascia and Wall Mount setup ............................................... 40
Chapter 6 MicroFlow PC ..................................................................................................... 43
Software installation ........................................................................................................ 43
Using MicroFlow PC ......................................................................................................... 44
Flow Tab ................................................................................................................................ 45
Setup Menu ......................................................................................................................... 48
System menu ...................................................................................................................... 48
Tools menu .......................................................................................................................... 49
Info menu ............................................................................................................................. 49
Flow Record Tab ................................................................................................................ 50
Trace Tab .............................................................................................................................. 51
Parameter Tab .................................................................................................................... 52
Chapter 7 Parameter Listing and Description ............................................................ 54
Parameter Access .............................................................................................................. 54
Output parameters ........................................................................................................... 55
Configuration parameters ............................................................................................. 55
Saving & Loading parameters ..................................................................................... 59
Firmware Upgrade ............................................................................................................ 60
Chapter 8 Troubleshooting ................................................................................................ 62
Chapter 9 Disposal ................................................................................................................ 63
Notes .......................................................................................................................................... 64
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CHAPTER 1: START HERE…
Congratulations on your purchase of a Pulsar MicroFlow. 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
TIP: Look f or this ic on throughout your Pulsar Measurement manual to
find helpful information and answers t o frequentl y as k ed que st ion s .
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.
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About the MicroFlow
The MicroFlow is a non-contacting velocity sensor. 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’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.
PC software is available to allow setup and run diagnostics using MicroFlow
PC via a RS 485 connection. The MicroFlow is compatible for use with
Pulsar’s, FlowCERT, Velocity Interface and Ultimate controllers to obtain
velocity readings. The MicroFlow can also be retrofitted to replace existing
in-process contacting sensors.
Overall, the device has outstanding stability, accuracy and repeatability.
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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.
• Retro-fit capability and low-cost installation.
• Hazardous area approval (Ex mb) for Zone 1.
• Monitors flow over natural channels such as streams and rivers.
• ‘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
• Virtually maintenance free; not affected by sedimentation, so there is
no need for regular cleaning.
• Compatible with Pulsar’s FlowCERT, Velocity Interface and
Ultimate controllers, with retrofit capability for in-contact sensors.
• Can be installed in addition to existing in process contact measuring
devices.
• Easily setup using MicroFlow 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 MicroFlow
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 has been designed to provide maintenance free
performance.
The MicroFlow automatically matches to the protocol and Baud rate of the
controller. When it is connected to a controller and powered up, after
approx. 20 seconds the sensor will adjust to the Baud rate of the controller it
is connected to.
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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)
Mounting angle
45º optimum and mounted at the center line of the
channel, with clear uninterrupted flow.
Sensor dimensions
Diameter 90mm x height 140mm
Weight
0.7kg
Transducer Cable Extensions
5-core screened
Maximum Separation
Up to 500m
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 16.105X
II 2 G Ex mb IIC T4 Gb
II 2 D EX mb IIIC T135oC Db Tamb -20oC to +60oC
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 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
RS485 and Modbus RTU-integrates with compatible
Pulsar controllers.
PROGRAMMING
PC programming
Via RS232
Programmed data integrity
Via non-volatile RAM, plus backup
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PC Setup and monitoring
Software
MicroFlow PC – compatible with Win 7 (latest service
pack), Win 8, Win 10
SUPPLY
Operating voltage
10 – 28 VDC
Power Consumption
0.36W
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
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CHAPTER 2 POWER SUPPLY REQUIREMENTS
Unpacking
Power Supply Requirements
The MicroFlow can operate from a DC supply of 10 to 28V. In all cases the
unit typically consumes 0.36W of power.
Cable Screen and Earth Requirements
The MicroFlow can operate from a DC supply of 10 to 28V. In all cases the
unit typically consumes 0.36W of power.
CABLE COLOUR
CABLE DETAILS
Red
(Power) +10-28 VDC
Black
0 Volts
Orange
RS485 +
White
RS485 -
Blue
RS485 Common
Green
Cable Screen
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.
Fuse 100mA leaded little fuse 0242
MicroFlow
Cable
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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.
• Ensure that the Pulsar Controller is installed in a “Safe”, non-
hazardous, area.
Mounting
For the best results, it is highly recommended to use the MicroFlow angled
bracket, which is available from your Pulsar distributor, which will ensure that
the MicroFlow can be correctly installed. The bracket can be used if the
MicroFlow sensor is to be mounted on its own in a specific location or along
with a Pulsar dB 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 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.
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
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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 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.
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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 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
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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 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 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 the
cable used is of a multicore design. The wire coding is shown below for ease
of use when connecting the MicroFlow to a device to monitor flow velocity:
The MicroFlow can be used with the following Pulsar controllers to obtain
flow and velocity readings:
• FlowCERT wall mount unit.
• Velocity Interface wall mount unit.
• Ultimate Controller fascia and wall mount unit with firmware
version 1.5.2 and greater.
You can also use Pulsar’s MicroFlow PC software to interrogate and obtain
readings from the device. Please refer to Chapter 6 MicroFlow PC Software
for more details on how to use it. The RS485 termination is electronically
controlled by parameter 57 (P57). Please refer to ‘Chapter 7 Parameter
Listing and Descriptions - RS485 Communications and Modbus’.
CABLE COLOUR
CABLE DETAILS
Red
(Power) +10-28 VDC
Black
0 Volts
Orange
RS485 +
White
RS485 -
Blue
RS485 Common
Green
Cable Screen
Fuse 100mA leaded little fuse 0242
MicroFlow
Cable
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FlowCERT Wall Mount
The terminal strip is as detailed below. There is also a wiring diagram inside
the terminal access cover of the FlowCERT unit. For further information on
how to operate a FlowCERT unit, please refer to the separate FlowCERT user
manual. To set up a MicroFlow sensor with the FlowCERT please refer to
Chapter 5 – Setting up your MicroFlow of this manual. The FlowCERT
manual is also available for download from the Pulsar website:
https://pulsarmeasurement.com/
Wire the MicroFlow sensor to the FlowCERT terminals as follows:
The green cable (cable screen) should be connected to Earth such as
terminal 44 (0V).
TERMINAL CONNECTION DETAILS
Cable Type
Red
Power
Black
0 Volts
Orange
RS485+
(B)
White
RS485-
(A)
Blue
RS485
Common
Terminal Number
41
44
36
35
34
Important Information
Power to the controller should be disconnected until the MicroFlow is connected
correctly. 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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Velocity Interface
The Terminal strip is detailed as below. There is also a wiring diagram
attached to the board directly underneath the terminal strip. For further
information on how to setup a Velocity Interface unit, please refer to the
Velocity Interface user manual. To set up a MicroFlow sensor with the
Velocity Interface please refer to Chapter 5 – Setting up your MicroFlow of
this manual. The Velocity Interface manual is also available for download
from the Pulsar website:
https://pulsarmeasurement.com/
Wire the MicroFlow sensor to the Velocity Interface terminals as follows:
The green cable (cable screen) should be connected to Earth such as
terminal 44 (0V).
TERMINAL CONNECTION DETAILS
Cable Type
Red
Power
Black
0 Volts
Orange
RS485+
(B)
White
RS485-
(A)
Blue
RS485
Common
Terminal Number
23
22
24
25
21
Important Information
If you require help in connecting the MicroFlow to any of the Pulsar controllers
mentioned in this manual, then please contact your local Pulsar Distributor for
assistance.
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Ultimate Controller (Fascia)
The Terminal strip is detailed as below. For further information on how to
setup an Ultimate Controller unit, please refer to the Ultimate Controller user
manual. To set up a MicroFlow sensor with the Ultimate Controller please
refer to Chapter 5 – Setting up your MicroFlow of this manual. The
Ultimate Controller manual is also available for download from the Pulsar
website:
https://pulsarmeasurement.com/
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Wire the MicroFlow sensor to the Ultimate Fascia terminals as follows:
The green cable (cable screen) should be connected to Earth such as
terminal 44 (0V).
TERMINAL CONNECTION DETAILS
Cable Type
Red
Power
Black
0 Volts
Orange
RS485+
(B)
White
RS485-
(A)
Blue
RS485
Common
Terminal Number
5 6 7 8 9
Important Information
If you require help in connecting the MicroFlow to any of the Pulsar controllers
mentioned in this manual, then please contact your local Pulsar Distributor for
assistance.
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Ultimate Controller (Wall Mount)
The Terminal strip is detailed as below. For further information on how to
setup an Ultimate Controller unit, please refer to the Ultimate Controller user
manual. To set up a MicroFlow sensor with the Ultimate Controller please
refer to Chapter 5 – Setting up your MicroFlow of this manual. The
Ultimate Controller manual is also available for download from the Pulsar
website:
https://pulsarmeasurement.com/
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Wire the MicroFlow sensor to the Ultimate Wall terminals as follows:
The green cable (cable screen) should be connected to Earth such as
terminal 44 (0V).
TERMINAL CONNECTION DETAILS
Cable Type
Red
Power
Black
0 Volts
Orange
RS485+
(B)
White
RS485-
(A)
Blue
RS485
Common
Terminal Number
5 6 7 8 9
Important Information
If you require help in connecting the MicroFlow to any of the Pulsar controllers
mentioned in this manual, then please contact your local Pulsar Distributor for
assistance.
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CHAPTER 3 LOCATING THE MICROFLOW
For optimum accuracy install the MicroFlow 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 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
• If the width of the channel exceeds 1.5m. Multiple MicroFlow 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. 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
MicroFlow
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Hazardous area Installation
Not all MicroFlow models are ATEX certified, check label for approval details.
The ‘X’ in the certifications number indicates that certain special conditions
apply. This version must be supplied from apparatus that provides
protection from prospective short circuits up to 1500A. The fuse is fitted in
the safe area end of the cable.
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.
Important Information
Below is an example of the wrap around label that is found on an ATEX approved
MicroFlow. If this information does not appear on the label of your MicroFlow
sensor it is not ATEX approved for hazardous area.
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Ex mb Version
PSU
V
+
-
HAZARDOUS
Ex mb Version RS485
RS485
FlowCERT, Velocity Interface,
Ultimate, PC or Modbus
100Ma FUSE BREAKING
CAPACITY 1500a PRE-FITTED
Um=28V
PROSPECTIVE
SHORT CIRCUIT
CURRENT 1500A
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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:
Distance
Distance
Diagram 1
Distance
Diagram 2
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Diagram 3
Distance
Distance
Distance
Distance
Diagram 4
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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 connecting multiple MicroFlow 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
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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 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. 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 obtaining readings
following the direction of the
flow.
MicroFlow obtaining readings
from the oncoming direction of
the flow.
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Sensor Maintenance.
Procedure for the Removal of a MicroFlow Sensor
From time to time, it may be necessary to remove the transducer 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 transducer wiring from the controller or any junction
box as shown in the Terminal Connections section of this manual,
and remove the sensor cable from the controller/enclosure.
• Remove any bolts or 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’.
Important Information
Below is an example of the wrap around label that is found on an ATEX approved
MicroFlow. If this information does not appear on the label of your MicroFlow
sensor it is not ATEX approved for hazardous area.
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• When replacing the sensor for a new one, upon connecting the sensor
to the Pulsar controller and powering the devices up, the new sensor
will automatically adopt the Baud rate of the controller using the
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.
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CHAPTER 4 UNDERSTANDING HOW THE MICROFLOW WORKS
To set up and obtain readings from your application using the MicroFlow, it
is advised to do this using a Pulsar controller.
Measuring streamflow / open channel flow
The calculation of flow using Area x Velocity is only possible when the
MicroFlow sensor is used as part of an integrated system with either
FlowCERT or Ultimate Controllers.
The calculation for the determination of discharge/flow in open channels
consists of different factors:
• Velocity of the liquid in the channel.
• Depth of the liquid in the channel.
• Cross sectional channel dimensions.
The flow is then calculated using the formula Q = V x A(h)
Where: Q = Flow rate
V = Velocity
A(h) = Area at head
Once the controller and the MicroFlow have been powered up, you can now
begin to program the controller to work effectively with the MicroFlow
device.
On the Velocity Interface and the FlowCERT, the display provides different
levels of runtime information and a simple, progressive menu system in
program mode.
On the Ultimate Controller you can allocate up to 2 AUX displays to show
different levels of run time information
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MicroFlow Protocol
The MicroFlow uses a unique protocol which enables it to automatically
work with the Baud rate of any appropriate Pulsar controller that it is
connected to.
To enable the MicroFlow protocol to work successfully to ensure that the
controller’s power is disconnected when connecting the sensor to it.
Once the sensor is connected to the controller and power is restored to the
device, after a short period of time, the MicroFlow will automatically detect
and adjust its protocol and Baud rate to match that of the appropriate Pulsar
controller.
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CHAPTER 5 SETTING UP THE MICROFLOW
This chapter explains the quickest way in which to get your MicroFlow
sensor working with the Pulsar controllers that the sensor operates with.
FlowCERT Setup
1. Install and connect your FlowCERT controller as outlined in the
FlowCERT user manual.
2. Install and connect your MicroFlow sensor to the FlowCERT as
described in Chapter 2 - Installation - FlowCERT of this manual.
3. Power up the unit and enter program mode by keying in ‘1997’ and
pressing Enter to set-up an application for ‘area velocity’. This can be
done by choosing option 4 in Quick set-up or directly changing P700
to 4 = ‘Area velocity’.
4. Continuing with the Quick setup, you now need to select the Primary
Measuring Device (PMD) for your application from the options
displayed on screen.
5. Once you have selected your application you will then be asked a series
of questions, which are answered by selecting the appropriate option
you require. For further information on the Quick set-up of a FlowCERT
please refer to Chapter 6 Quick Set-up Guide in the FlowCERT user
manual.
6. Once you have selected area velocity, set P130 ‘Device Mode’ to 2 =
‘Speedy’ (‘Velocity’ in Ultra firmware versions 7.4.4 and onwards) to
enable the velocity parameters.
7. To change the maximum flow velocity of your application you will need
to set P683 ‘Maximum flow velocity’ to the desired value (in m/s)
8. All other velocity parameters can be left at their default values or can be
adjusted to suit the application, i.e., ‘P688 Gain’ and ‘P684 Damping’
can be altered to the value range outlined in Chapter 7 – Parameter
Listing and Descriptions of this manual.
9. When a level transducer is also connected, to view the instantaneous
flow velocity measurement on the auxiliary display of the FlowCERT,
P815 ‘Auxiliary Source’ should be set to 1 = Velocity. The auxiliary
display will then alternate between displaying the flow units and the
current flow velocity. Please note that the instantaneous flow velocity
cannot be displayed in the auxiliary display when the re-settable
totaliser is selected.
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10. If no further changes are required, return to run mode and after a
short time the flow readings from the MicroFlow will be displayed on
the FlowCERT screen.
Velocity Interface setup
1. Install and connect your Velocity Interface controller as outlined in the
Velocity Interface user manual.
2. Install and connect your MicroFlow sensor to the Velocity Interface as
shown in Chapter 2 - Installation – Velocity Interface of this manual.
3. Power up the unit and enter program mode by keying in ‘1997’ and
pressing Enter to begin setting up the unit for measurement.
4. If you wish to change or view the velocity measurement units, set P130
‘Measurement units’ to the selection of your choice from the options
given in the parameter list shown on the screen.
5. To change the maximum flow velocity of your application you will need
to set P683 ‘Maximum flow velocity’ to the desired value (in m/s).
6. To change the velocity at which the high mA output (20mA) will occur,
you will need to set P835 ‘Output High Level’ to the value you require in
measurement units (P104).
7. All other parameters can be left at their default values, or adjusted to suit
the application, i.e., ‘P688 Gain’ and ‘P684 Damping’ can be altered to the
value range outlined in Chapter 7 – Parameter Listing and Descriptions of
this manual. For further information on the full parameter listing of a
Velocity Interface, please refer to Chapter 5 - Parameter Guide in the
Velocity Interface user manual.
8. If no further changes are required, return to run mode and after a short
period of time, velocity, and mA readings from the MicroFlow will appear
on the Velocity Interface’s screen.
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Ultimate Controller Fascia and Wall Mount setup
1. Install and connect your Ultimate Controller as outlined in the Ultimate
Controller user manual.
2. Prior to installing and connecting your MicroFlow sensor to the
Ultimate, you will need to set the sensors unique Modbus address by
using MicroFlow PC. This is done by changing the Modbus ID value,
which can be done by the Modbus ID box in the software, or using the
manual parameter box and change P52 to between 2 & 125 (Ensure
multiple sensors have different addresses). For further details on
changing parameters and using MicroFlow PC, please refer to Chapter
6 - MicroFlow PC where details of how to use the software is explained.
3. Once a Modbus address is set, install and connect your MicroFlow
sensor to the Ultimate Controller as shown in Chapter 2 – Installation
– Ultimate Controller (Fascia & Wall Mount) of this manual.
4. Power up the unit and enter program mode by pressing ‘Menu’ and
keying in ‘1997’ and pressing Enter to begin setting up the unit for
measurement.
5. Select Advanced Config. > Live List, where the controller will now
search for the Modbus ID of the MicroFlow unit(s) that have been
connected.
6. In Advanced Config. > Modules, Select the amount of MicroFlow
sensors and press the ‘<’ button so that they appear in the ‘Added’
column. Now select each MFL (MicroFlow) and select ‘Edit’ to change
the Modbus ID to what has already been set and discovered in the
Live List. The controller will now reboot.
7. Re-enter program mode by pressing ‘Menu’ and keying in ‘1997’.
8. Select ‘Setup > Application > Operation’ and press the ‘+’ button to
add a point of measurement, which you can rename to something of
your choice.
9. Select ‘Velocity’ where you will now be able to select the MicroFlow as
a velocity measurement point.
10. Select ‘Single’ when only using one sensor to obtain velocity
measurements.
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11. If more than one sensor is to be setup for different channels, then
repeat ‘step 8 and 9’ in these instructions. If multiple sensors are to
be used on one channel, please select the appropriate sensors from
the list on screen. You can now select ‘Avg, Diff, or Sum’ as a mode of
operation.
12. If no further changes are needed, you can exit the screen and save
your changes.
13. Return to the ‘Main menu’ and select ‘Sensors > MicroFlow’ and
enter the maximum velocity in m/s, and adjust any other settings that
are required.
14. Touching the MicroFlow picture will allow you to access the sensors
trace screen. Here you can see the velocity (m/s), signal strength and
confidence of the current reading obtained.
15. Return to the ‘Main menu’ and select ‘OCM’.
16. In ‘PMD Type’ select Area Velocity.
17. Below you will need to select from the options available, in Primary
PMD choose the type of measuring device from the list available.
18. In ‘Allocation’, select the point of level measurement that your
transducer has been assigned to.
19. On the image of the channel/measuring device, insert the dimensions
as required in measurement units.
20. Select the drop-down box ‘Vel.Input’ and select the point of
measurement that your MicroFlow has been assigned to.
21. If all other measurements have been applied, then a value will now
appear in ‘Max.Flow’.
22. If no other changes are required, then exit the OCM setup and Save
changes made.
23. To view the velocity obtained from the MicroFlow(s) on the main
display in run mode, please continue to follow these instructions. If
you do not require to view this information, and you have finished
setting up your Ultimate then return to run mode.
24. To view the velocity and flow information obtained from your OCM
application in run mode, from the ‘Main menu’ select ‘Display >
Source’. From the options available and select ‘OCM Flow’.
25. If no further programming is required exit the screen and save the
changes made. Returning to run mode you will now see an image of
your PMD and a MicroFlow symbol appear on the main display.
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26. Once velocity and flow is obtained this information will appear on the
screen. Flow will appear in measurement units and will appear as the
main value, and velocity values will appear in the green boxes under
the MicroFlow symbol and above your PMD.
27. To view the information from your velocity measurement point in an
auxiliary display, select ‘Display – Aux’, and in ‘Source’ from the
selection available, choose the point of measurement that the
MicroFlow(s) are assigned to.
28. Exit the screen and save changes made, and return to run mode if no
further programming is required.
29. Once velocity is detected then this information can be viewed in the
auxiliary display.
Important Information
For further information on how to set up the individual controllers, please refer
to that controller’s instruction manual. All of Pulsar’s product manuals are
available from the Pulsar website:
https://pulsarmeasurement.com/downloads
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Fig.9
CHAPTER 6 MICROFLOW PC
The software that accompanies the MicroFlow can be used to setup, test,
obtain and record readings from a sensor. To utilise the features of the
software, a RS485 connector which is available from Pulsar (as shown in Fig.9
below), is required to communicate between the sensor and your machine.
If a Pulsar controller is installed, common setup parameters can be
programmed directly from the controller, such as ‘Gain’ and ‘Damping’.
This chapter outlines how to install the software onto your machine and how
to use it with your MicroFlow sensor.
Software installation
Insert the CD that accompanies the MicroFlow 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 and choose Software and select
to download MicroFlow PC from the list which will then be downloaded onto
your machine.
When setting up the RS485 connector 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 PC
Setup.exe from the CD, or from the downloaded file from our website to
install the MicroFlow PC software correctly, which will automatically install
the necessary drivers for your RS485 connector. Once downloaded, a
shortcut icon will be created onto your Desktop for ease of use. Double click
on this icon to launch the program.
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For optimum installation insert your RS485 connector to your PC whilst
installing the drivers, where your PC should assign it to a Com Port. Or if
you have an internet connection, upon inserting the USB of the RS485
connector for the first time, Windows updates should install this onto your
computer for you. Once the driver’s installation has completed, remove the
RS485 connector from your machine. Your RS485 connector is ready to be
used when a connection to MicroFlow PC is required.
Using MicroFlow PC
When connecting to the software using the RS485 connector, power to the
sensor can be obtained from the compatible Pulsar controller is connected
to.
With the two MicroFlow RS485 cables removed, connect the Red wire with
the Red crocodile clip on the connector, to the Orange (RS485+) wire of the
MicroFlow. And connect the Blue wire with the Black crocodile clip on the
connector to the White (RS485-) wire of the MicroFlow, as shown below:
Once the sensor is connected to the RS485 connector, insert it into the
PC/laptop ready for use, and ensure that your sensor is switched ‘ON’ to
enable the software to communicate with the sensor.
If you know the Com port that the RS485 connector is assigned to, please
select Setup > Serial Port to enter the Com port number to the device. If
you are not aware of the Com port number, selecting ‘Connect to device’ will
allow the software to automatically search and connect to the RS485
connector Com port.
After launching the program and connecting to the MicroFlow, 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, Flow Record, Trace and
Parameters.
Important Information
Ensure that power to the controller/sensor is switched ‘OFF’ before removing
cables and any connection is made.
MicroFlow RS485+
MicroFlow RS485-
RS485 Connector (-)
RS485 Connector (+)
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Flow Tab
The above picture is the default screen of MicroFlow PC, which is the Flow
tab. The dial on the left displays the linear flow velocity (up to 6m/s), which
is in metres per second. While the numerical display on the right shows the
velocity flow rate in different volume and time units. The values displayed
here also appear on the PC software’s other tabs to help diagnose the
information seen on the individual tabs. Below this display there are two
drop down boxes where you can adjust the values to read different
measurement units and/or time units. Measurement units can be changed to
either metres, millimetres, or feet. The time units can be changed to
seconds, minutes, or hours. The default for distance and time units is m/s.
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.
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.
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ICON
DETAILS
Connect: Click to connect to the MicroFlow device.
• If known set the serial port (Setup > Serial Port) for
your RS485 connector. Otherwise, the software will
search for and connect to it automatically.
• The MicroFlow is interfaced using Modbus via the
RS485 terminals. The default Modbus Slave ID is
126.
Disconnect: This appears after a connection is
established. Click this icon to disconnect from the
MicroFlow.
Diagnostic Trace: Requests for a diagnostic trace to be
taken.
• When activated, this icon border will light up yellow
and ‘live’ traces can be observed on the ‘Trace’ tab.
Click again to deactivate.
Save Data to File: Click to record data from the
MicroFlow device.
When activated, this icon will light up yellow, clicking
again will deactivate the feature.
• To record diagnostic traces along with the flow
data, please ensure that the trace icon is active and
live traces are shown on the trace tab and a site ID
has been entered.
• The recording interval is set via the Setup>Recording
Interval menu. The default is one record in every 2
seconds.
• Files are automatically named with “MicroFlow…”
prefix followed by the current date & time stamp.
Example: MicroFlow-20-01-2015-08-30-00.MLG.
• If recording over a long duration, a new file will be
automatically generated after 30 minutes.
• The recorded data files are stored in the MicroFlow
PC installation folder by default.
• When recording is active, click on the icon again to
stop.
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ICON
DETAILS
Replay Recorded Data: Click to replay recorded data. This can
be performed without a connection to a MicroFlow sensor.
• The program will disconnect from a sensor during replay.
• A prompt will appear for choosing the data files to play.
• Select the data files to replay, ensure that on MicroFlow PC
recorded data files are selected.
• To replay more than one file, select multiple files by holding
down the ‘CTRL’ key on the keyboard while clicking
additional files.
• Recorded traces are shown in the Trace tab and the
recorded flow is shown in the Flow tab.
• During replay, click on the icon again to stop.
Increase Replay Speed: During replay mode, clicking this
icon will increase the replay speed. A prompt will appear
when the maximum replay speed has been reached.
Decrease Replay Speed: During replay mode, clicking
this icon will decrease the replay speed. A prompt will
appear when the minimum replay speed has been
reached.
Exit: Click on this icon to exit the program.
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Setup Menu
This menu option enables you to perform the following actions:
Clear Flow Record
This option allows you to clear the Flow Record chart that has been obtained
from the sensor since its connection.
Recording Interval
This controls the time interval before a new flow record and trace is saved to
file when the save-to-feature is in use.
Serial Port
This allows you to setup the RS485 port. The default setting when
interfacing with the software is 19200 Baud rate, 8 bits, No Parity, 1 Stop bit.
There is normally no requirement to change the default parameters, as the
COM port number is automatically detected.
Work Folder
Allows you to select the default folder for where the data files are to be
saved to.
System menu
This menu provides the options to perform the following actions:
Save Device Parameters
Extract parameters configured on the sensor and save them to PC as a
parameter file. This will be saved to MicroFlowPC installation folder, and
prefixed with ‘ParamMicroFlow’.
Load Parameters to Device
Load the parameters from a saved parameter file onto the MicroFlow sensor.
This should only be used with a file prefixed with ‘ParamMicroFlow’.
*Bootloader Control
This launches the Bootloader PC program, allowing you to upgrade the
firmware on the MicroFlow sensor. Any customised parameters will be
erased during a firmware upgrade, it is recommended to save parameters
before performing an upgrade.
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*Switch Device into Bootloader
Resets the MicroFlow into Bootloader mode. The Bootloader PC program
must be used to connect to the sensor in this mode. The MicroFlow will
resume normal operation if no connection is established after approximately
30 seconds.
Parameter Factory Reset
This resets all the sensor’s parameters to their factory default values.
Tools menu
This menu option allows you to choose the following options:
Export data 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, Flow velocity
(m/s), Signal Strength and Stability. This information from the MicroFlow
could then be placed into a chart/graph format.
Chart Data file
This opens the directory folder on your computer where MicroFlow data is
currently stored.
Info menu
Selecting this will allow you to view the following information:
MicroFlow PC
This displays information showing the version of software currently being
used.
MicroFlow Device
When connected to a MicroFlow sensor the information regarding the
firmware, hardware and the serial number of the device currently connected
are displayed here.
Data Folder Path
This shows where all data files are currently stored when saved to your
machine.
Important Information
*These options are only available via service code access. If you require help in
connecting the MicroFlow then please contact your local Pulsar Distributor for
assistance.
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Flow Record Tab
The flow record provides a record of the flow over time. Each point on the
graph represents a 1.2 second interval. However, when the trace button has
been pressed and a trace is being retrieved from the sensor, this slows down
and a point on the graph now represents a 2 second interval.
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”.
To clear the Flow Record chart, select Setup > Clear Flow Record Chart, while
the chart is inactive.
Important Information
When the save data to file function is being used, flow information and traces
will be written to file, at the fixed interval selected via ‘Setup > Recording
Interval’. See ‘Recording Interval’ in the ‘Using MicroFlow PC’ section of this
manual.
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Trace Tab
This displays the diagnostic traces from the sensor when the trace button is
activated or when replaying a saved file. The vertical axis is related to the
signal strength, while the horizontal axis is related to the detected flow.
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 noflow 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 are also able to see the current velocity measurement obtained by the
sensor in the chosen volume and time units selected.
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Parameter Tab
This tab enables the user to change parameter settings in the MicroFlow
sensor. It is important to note the following to ensure that the sensor is
correctly programmed.
Upon every connection to the sensor, MicroFlow PC will synchronise the
values on the Parameter tab to that currently stored on the sensor, including
the Modbus ID of the sensor. Changing a parameter can be done in one of
two ways:
1. Selecting the parameter and then entering/choosing a value from the
options available when highlighting the box.
2. Using the Manual Setting parameter box.
Important Information
Ensure that the correct parameter/register number is known before making
changes to any of the parameters and their values.
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The option for manually setting the parameters can be done by utilising the
Manual Setting terminal on the parameters tab, as shown below:
All parameters can be queried by entering the parameter address in the
Parameter field and then clicking on the Query button. The MicroFlow will
then reply with the current value of that parameter.
For setting a parameter, both the Address and Value must be entered before
clicking on the Set button. ‘User’ will show the value you have changed in
the manual setting box. And ‘UI’ will appear when changing a parameter via
one of the parameter drop down selection boxes. The appropriate access
levels are required for setting parameters. After changing any parameter,
the ‘SAVE’ button must be clicked to send and save the new values to the
device. If the change is not successful, then the values that are shown on
the Parameter tab will reflect the current parameter value on the sensor.
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, highlighting the ‘Default’ box, and selecting any of the options from the
drop-down list will display that parameters default box. This shows the
parameter number, its current value, and the default value of that individual
parameter. Select ‘OK’ and then ‘SAVE’ to store that value.
If the MicroFlow is being controlled simultaneously on both MicroFlow PC
and RS485 via Modbus interface, the values on the Parameter tab will not be
instantly updated on MicroFlowPC if a parameter change is instructed via
the RS485 Modbus.
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CHAPTER 7 PARAMETER LISTING AND DESCRIPTION
Parameter Access
All the MicroFlow sensor 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: Output parameters and Configuration parameters.
Output parameters are read only and cannot be set by the user. Examples
are the stability and signal strength. Configuration parameters can be
queried and set, there is also an associated access level required for setting,
either ‘User’ or ‘Service’. Upon connection to a sensor, 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.
The naming syntax for the parameters is with a prefix of ‘P’ before the
address. For example, a parameter at address 102 is “P102”. The
value/content of the parameter is delimited by a colon “:”, such that
“P102:20” indicates that the parameter at address 102 has a value of 20.
The terms “parameter” and “register” are used interchangeably as the
parameter number is the actual address of the storage register.
The parameters on the MicroFlow can be accessed using either:
• The parameters tab on MicroFlow PC.
• Modbus RTU communication protocol (RS485).
It is recommended that only one method of access is used at any point in
time.
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Output parameters
Using a Modbus Master, output parameters can be polled using Read Input
Registers. For example: to view the flow velocity, you would read register
(parameter) addresses 30020 and 30021.
Flow Velocity P20 and P21
The current flow velocity can be read from registers 20 and 21, in the
following format:
P20 contains the whole number part of the flow reading, while P21 contains
the fractional part of the flow reading. P21 is stored as a whole number
from 0 – 999 (allowing a fractional representation of 0.001 to 0.999).
P22 Signal Strength
This is a ‘read only’ parameter and gives you the current signal strength in a
percentage, from 1 to 100.
P23 Stability
This is a ‘read only’ parameter and gives you the current stability in a
percentage, from 1 to 100.
Configuration parameters
RS485 Communication and Modbus
Use these parameters to setup the MicroFlow device to the appropriate Pulsar
controller.
NAME
PAR NO.
OPTIONS
DEFAULT
DESCRIPTION
MicroFlow sensor
Modbus Address
52
1 – 126
126
Unique Modbus
device ID.
Modbus
Terminations
57
0 = Off
1 = On
1
Select 1 = On, if
termination is
required.
8.76
Register [20] = 8
Register [21] = 760
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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.
Processing Parameters
These parameters are read only.
NAME
PAR NO.
OPTIONS
DEFAULT
DESCRIPTION
Gain
102
1 – 16
10
Used to enter a fixed gain
(sensitivity) value, a
higher number means
higher gain.
Cal Factor
108
1 – 500
100
In percentage terms,
default is 100 for 100%.
50% is half and 200%
would be double.
Damping
109
0 – 28
24
This sets the damping
applied to the MicroFlow
sensor. A higher number
represents more
damping.
Damp Persist
116
0 - 18
12
This is the number of
measurements that the
sensor acquires, before
switching into Step
Response Mode.
Step Response
Mode
113
0 = Off
1 = On
1
When turned off, no
damping by pass will be
performed.
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NAME
PAR NO.
OPTIONS
DEFAULT
DESCRIPTION
Step Persist
115
0 – 18
12
This is the number of
measurements that the
sensor acquires, before
switching into damping
mode. Diagnostic trace
can be used to adjust
this.
No Signal Persist
117
1 - 100
2
This is the number of
non-measurements to
persist before the sensor
sees a state of no signal
Signal Present
state
118
1 – 10
2
This is the number of
measurements that need
to persist to be a signal
present state
Minimum Flow
Cut-off
120
10 – 4000
150
In units of mm/s velocity
for user input
Response
125
0 = Slow
1 = Fast
Slow
Changing this to ‘Fast’
will automatically
calibrate parameters in
the MicroFlow sensor to
track measurements
faster. This is
recommended for
Pumped flow. ‘Slow’ 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.
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NAME
PAR NO.
OPTIONS
DEFAULT
DESCRIPTION
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.
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
0 = Off
Turns the multipoint
calibration on and off
Simulated Flow
Mode
288
0 = Off
1 = On
0 = 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 (Defaults
sensor)
0
This resets all MicroFlow
parameters to their
default values. (It does
not affect any mA Trims
applied).
If using the MicroFlow 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.
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Saving & Loading parameters
For a device where parameters are heavily customised, the user may wish to
replicate such customisation on a second device. Saving and loading
parameters can be used to avoid having to set-up the parameters
individually again:
1. Connect MicroFlow PC to the first device, then select System->Save
Device Parameters.
2. A confirmation message will appear, and the parameters saved to a
file within the default folder (use Info > Data Folder Path to see the
folder location). The filename is prefixed by “ParamMicroFlow-”
followed by the date and time.
3. Connect the second device to MicroFlow PC, to load the
parameters on to. Select ‘System > Load Parameters to Device’,
then choose the parameter file to load.
4. The unit will disconnect from the software, and a message box will
appear asking to confirm the parameter change, and once
completed another message box will appear informing you that the
parameters have been loaded onto the sensor correctly.
5. Once the parameters have been loaded onto the sensor, it will
automatically re-connect to the MicroFlow PC software, where you
are able to see the new parameter values.
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Firmware Upgrade
Ensure that any customised parameters are saved before any firmware
upgrade is undertaken. Firmware upgrades are performed in ‘Bootloader’
mode. Note that all flow measurement and output operation will be halted
when the sensor is in the ‘Bootloader’. Please follow these steps:
1. Please ensure that the sensor is connected to a PC via the RS485
port. Prior to reprogramming, you will need the firmware file, and
the COM port number of the RS485 connector.
2. Establish a connection to the sensor, and it is advisable to save any
customised parameters before beginning an upgrade.
3. You will require Service access to switch the device into Bootloader
mode, and to activate Bootloader control.
4. First place the device into bootloader mode by selecting System >
Switch Device into Bootloader.
5. Select System > Bootloader control, which will launch the
Bootloader interface. As seen in Fig.9.
6. Once connected click ‘Load Hex file’, and choose the firmware file
you are using to upgrade the sensor.
7. Click ‘Erase-Program-Verify’ and wait for the process to finish.
8. When the ‘Verification Successful’ message is displayed, click ‘Run
firmware’ and the Bootloader Interface will close.
9. Select the ‘connect’ button on the software, and the sensor will
reconnect to MicroFlow PC with the new firmware installed.
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Fig.9
Important Information
If the sensor does not connect to the device within 40 seconds, it will resume its
normal operation with its current firmware.
Do not switch off supply to the unit or close down the software during the
firmware upgrade.
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CHAPTER 8 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
FlowCERT/Velocity
Interface/Ultimate shows ‘Lost
Comm’
Check power supply. Check wiring to the
MicroFlow sensor. If sensor has been
connected to a new unit, then it may
require power cycling to sync with the
controllers Baud rate.
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 PC
Check that wiring to the RS485 connector is
correct. Close MicroFlow PC, cycle power
on the sensor re-open MicroFlow PC and
retry connection.
FlowCERT reading is incrementing
slow on the display.
Adjust ‘P687 Stability’ on the FlowCERT
controller, to a smaller number than 12, i.e.,
8.
Important Information
If you experience any issues with our equipment, then please contact your local
Pulsar Distributor for assistance.
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CHAPTER 9 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.
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NOTES
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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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