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Pulsar MicroFlow-i Instruction Manual

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M
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ICRO
LOW
I
M
NSTRUCTION
ANUAL

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Summary of Contents for Pulsar MicroFlow-i

  • Page 1 ICRO NSTRUCTION ANUAL...
  • Page 3 Pulsar Process Measurement Limited 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.

  • Page 5: Table Of Contents

    Preparation for Operation ..........................23 General Maintenance............................. 23 Sensor Maintenance............................24 Chapter 4 Understanding how the MicroFlow-i operates ..............27 MicroFlow-i HART compatible ........................27 4 – 20 mA Device ............................27 Chapter 5 MicroFlow-i HART PC ....................29 Software installation ............................

  • Page 7: Chapter 1 Start Here

    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.

  • Page 8: About The Microflow-I

    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.

  • Page 9: Benefits

    Benefits Combined with the ease of programming there are many other benefits to using the MicroFlow-i, 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.

  • Page 10: Functional Description

    The MicroFlow-i 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.

  • Page 11: Product Specification

    Start up = 20mA. Average current = 60µA per hour when one velocity measurement is performed every 15 minutes Pulsar Process Measurement Limited operates a policy of constant development and improvement and reserve the right to amend technical details as necessary. Page 5...

  • Page 12: Eu Declaration Of Conformity

    EU Declaration of Conformity Page...

  • Page 13: Chapter 2 Installation

    Pulsar Process Measurement Limited. 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.

  • Page 14: Information Specific To Hazardous Area Installation

    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.

  • Page 15: Hazardous Area Specific Power Supply And Barrier Requirements

    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 sensor to the PC software with a HART modem, it is recommended to use a supply of at least 18VDC.
  • Page 16 Ex ia Version 4-20mA mode SAFE AREA HAZARDOUS AREA PSU/SENSE 24VDC LOAD/SENSE Ui<=28V Li<=162mA I.S. EARTH Pi<=1.03W DUAL ZENNER BARRIER DOUBLE ZENNER BARRIER CURENT SENSED IN +ve Ex ia Version 4-20mA mode HAZARDOUS SAFE AREA AREA PSU/SENSE CURRENT SENSE Ui<=28V Li<=162mA Pi<=1.03W GALVANIC ISOLATOR...

  • Page 17: Location

    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 Please see ‘Angled Mounting Bracket’ for dBi or dB level transducer.

  • Page 18: Angled Mounting Bracket

    Angled Mounting Bracket Part number: dBA0008MF 176mm Side view R20mm 22mm 22mm 100mm 12mm 90mm Top view 130mm Page...
  • Page 19 100mm 20mm 20mm 60mm R20mm 14mm 100mm 4 off 12mm 60mm 26mm Rear view Important Information Using a spirit level, ensure that the Mounting Bracket is level before attaching the sensor to the bracket. Page 13...

  • Page 20: Microflow-I Sensor

    MicroFlow-i sensor The dimensions of the sensor body are shown below in Fig.1 and Fig.2: 78 mm 1” BSP 73 mm 90 mm BOTTOM Fig.1 Green ‘Dot’ to be positioned on top of sensor. 45° Fig.2 Surface of measurement To obtain the most accurate results, ensure the device is mounted at a 45°...

  • Page 21: Mounting Sensor To A Bracket

    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.
  • Page 22 Fig.4 Central to the movement of flow in channel. 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. 305mm 215mm 129mm Fig.5 Page...
  • Page 23 When the sensor is mounted on the bracket with dB or dBi 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...

  • Page 24: Terminal Connection Details

    Terminal Connection Details Terminal Connections 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 you should use a twisted pair cable. The wire coding is shown below for ease of use...

  • Page 25: Chapter 3 Locating The Microflow-I Sensor

    Chapter 3 Locating the MicroFlow-i sensor 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.
  • Page 26 • 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, in order to obtain optimal velocity readings.
  • Page 27 Diagram 3 Distance Distance Diagram 4 Distance Distance Page 21...

  • Page 28: Installing The Sensor

    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. •...

  • Page 29: Preparation For Operation

    Preparation for Operation Before switching on, ensure that the following is checked: ✓ The MicroFlow-i is mounted correctly and is secure as outlined in Chapter 3 – Locating the MicroFlow-i sensor. ✓ All wiring is correct. ✓ The power supply is correctly installed.

  • Page 30: Sensor Maintenance

    • 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.
  • Page 31 Important Information Care should be taken when removing and cleaning so as to not damage the device. 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.
  • Page 32 This page is left blank intentionally Page...

  • Page 33: Chapter 4 Understanding How The Microflow-I Operates

    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).
  • Page 34 This page is left blank intentionally Page...

  • Page 35: Chapter 5 Microflow-I Hart Pc

    Chapter 5 MicroFlow-i HART 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...

  • Page 36: Connecting To Microflow-I Hart Pc

    250 Ohm resistor 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.
  • Page 37 Once the MicroFlow-i parameters have been retrieved successfully, the status condition will then appear as below: Page 31...

  • Page 38: Flow Tab

    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.

  • Page 39: Configuration Tab

    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.

  • Page 40: Microflow-I Manual Setting

    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.

  • Page 41: 20Ma Trim

    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.

  • Page 42: Trace Tab

    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.
  • Page 43 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 Record To record traces and the current velocity, select the button and enter a site ID when prompted to do so.

  • Page 44: Comport

    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...

  • Page 45: Info

    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.

  • Page 46: Chapter 6 Parameter Listing And Descriptions

    Parameter Listing and Descriptions Parameter Access All of 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.

  • Page 47: Processing Parameters

    Processing Parameters These parameters relate to the detection and processing of the flow velocity signal. Parameter Name Options Default Notes Used to enter a fixed gain Gain 100 - 1600 (sensitivity) value, a higher number means higher gain. When P113=1, this damping factor will be applied.
  • Page 48 In units of mm/s velocity for Minimum Flow user input, to set the 10-4000 Cut Off minimum flow velocity present. Changing this to ‘Instant’ will automatically calibrate parameters in the sensor to track measurements faster. 0=Instant This is recommended for Response 1=Moderate Instant...
  • Page 49 ‘OFF’ before disconnecting the sensor from the software and power cycling the unit. 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.

  • Page 50: Microflow-I Firmware Upgrade

    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’.
  • Page 51 Fig.10 Important Information Do not switch off supply to the unit or close the software down during the firmware upgrade. Page 45...

  • Page 52: Microflow-I Hart Firmware Upgrade

    When the ‘Program File OK now rebooting’ message is displayed, you can close the HART Bootloader and reconnect to the PC software. Select the ‘Search’ button on the software, and the sensor will reconnect to MicroFlow-i HART PC with the new HART firmware installed. Page...
  • Page 53 Fig.11 Important Information Do not switch off supply to the unit or close the software down during the firmware upgrade. Page 47...

  • Page 54: Chapter 7 Troubleshooting

    Sensor remains at a high mA Ensure that ‘Resume mA’ has been out reading (20mA) selected if in Run mode. Important Information If you experience any issues with our equipment, then please contact your local Pulsar Distributor for assistance. Page...

  • Page 55: Chapter 8 Parameter Record

    Chapter 8 Parameter record Device Information Parameters Parameter Details Entered Values Description Default P240 & Serial No. Read Only P241 P261 Firmware ID Read Only P262 Hardware ID Read Only Processing Parameters Parameter Details Entered Values Description Default P102 Gain P104 Quick Resp Damp Factor P108...

  • Page 56: Chapter 9 Disposal

    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.

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