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Micronics U1000-HM User Manual

Clamp on ultrasonic heat meter
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Micronics
Micronics U1000-HM
Clamp On Ultrasonic Heat Meter
Micronics Ltd, Knaves Beech Business Centre, Davies Way, Loudwater,
Telephone: +44(0)1628 810456
Issue 1.4
User Manual
High Wycombe, Bucks HP10 9QR
Facsimile: +44(0)1628 531540
www.micronicsflowmeters.com
U1000-HM User Manual
E-mail:
sales@micronicsltd.co.uk
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Summary of Contents for Micronics U1000-HM

  • Page 1 Micronics U1000-HM User Manual Micronics U1000-HM Clamp On Ultrasonic Heat Meter User Manual Micronics Ltd, Knaves Beech Business Centre, Davies Way, Loudwater, High Wycombe, Bucks HP10 9QR Telephone: +44(0)1628 810456 Facsimile: +44(0)1628 531540 E-mail: sales@micronicsltd.co.uk www.micronicsflowmeters.com Issue 1.4 Page 1...

  • Page 2: Table Of Contents

    Key switches ........................... 6 Installing the U1000-HM ........................7 Preparation ..........................8 Sensor separation ........................8 Attaching the U1000-HM to the pipe ..................10 Adaptors for small pipes ......................11 Attaching the Temperature sensors ..................12 U1000-HM interface cable ....................13 Connecting the U1000-HM to the Supply ................

  • Page 3: General Description

    110mm (4”) and a maximum wall thickness limit of 9mm for metal pipes and 10.5mm for plastic.  Simple to install temperature sensors  Compact, rugged and reliable, the U1000-HM has been designed to provide sustained performance in industrial environments U1000 standard features include:  2 line x 16 character LCD with backlight ...

  • Page 4: Quick Start Procedure

    Micronics U1000-HM User Manual 2 Quick start procedure The following procedure details the steps required to set up the heat meter. See the sections referred to if you are unsure about how to install the instrument. 1. Establish a suitable location for the flow meter on a straight length of pipe clear of bends and valves or similar obstructions.(See Sections 5 and 5.1)

  • Page 5: How Does It Work

    Micronics U1000-HM User Manual 3 How does it work? The U1000-HM is a clamp-on, ultrasonic flowmeter that uses a multiple slope transit time algorithm to provide accurate flow measurements. Figure 1 Principle of Transit-Time operation An ultrasonic beam of a given frequency is generated by applying a repetitive voltage pulse to the transducer crystals.

  • Page 6: User Interface

    Micronics U1000-HM User Manual 4 User interface Figure 2 illustrates the U1000-HM user interface comprising:-  One 2 line x 16 character LCD with backlight  Four tactile key switches  Two LED’s Sig : 87% 246.3 l/min Figure 2 U1000-HM User Interface 4.1 Key switches...

  • Page 7: Installing The U1000-Hm

    45°with respect to the top of the pipe. The U1000-HM equipment expects a uniform flow profile, as a distorted flow will produce unpredictable measurement errors. Flow profile distortions can result from upstream disturbance such as bends, tees, valves, pumps and other similar obstructions.

  • Page 8: Preparation

    Micronics U1000-HM User Manual 5.1 Preparation 1. Before attaching the transducers first ensure that the proposed location satisfies the distance requirements shown in Figure 3 otherwise the resulting accuracy of the flow readings may be affected. The unit is preconfigured for the application as follows :-...
  • Page 9 Micronics U1000-HM User Manual The diagram below shows how to adjust the separation of the sensors Figure 5 Separation Setting Issue 1.4 Page 9...

  • Page 10: Attaching The U1000-Hm To The Pipe

    U1000-HM User Manual 5.3 Attaching the U1000-HM to the pipe Follow the five steps shown in Figure 6 below to attach the U1000-HM to the pipe. The grease provided in the syringe is applied to the centre of the sensors as shown above.

  • Page 11: Adaptors For Small Pipes

    Micronics U1000-HM User Manual 5.4 Adaptors for small pipes Less than 40mm outside diameter 40 to 60mm outside diameter Greater than 60mm outside diameter Figure 7 Pipe Adaptors Guide rails for small pipes are supplied with adaptors. The diagrams above shows how these are fitted around the pipe.

  • Page 12: Attaching The Temperature Sensors

    Micronics U1000-HM User Manual 5.5 Attaching the Temperature sensors The temperature sensors must be located at the input and output of the system that is being monitored. The area of pipe where they are to be attached must be free of grease and any insulating material.

  • Page 13: U1000-Hm Interface Cable

    Micronics U1000-HM User Manual 5.6 U1000-HM interface cable The U1000-HM interface cable supplied is a 6-core cable and is shown in Figure 8. Un-insulated screen Power Pulse Modbus interface Figure 8. U1000-HM Interface Cable The polarity of the wires is as follows:...

  • Page 14: Cable Screen

    Micronics U1000-HM User Manual 5.10 Cable Screen For full immunity to electrical interference the screen of the cable should be connected to Earth. 6 Powering up for the first time Powering up for the first time will initiate the sequence shown in Figure 9:...
  • Page 15 1. The Micronics start up screen is displayed for 5 seconds 2. The user enters the pipe ID and selects the material (refer to section 6.1) 3. On pressing enter in response to the Set Separation screen the U1000-HM then checks for a valid signal.

  • Page 16: How To Enter The Pipe Id

    Micronics U1000-HM User Manual 6.1 How to enter the Pipe ID Figure 10 shows the Enter Pipe ID screen after an initial power up. Enter Pipe ID: 050.00 mm Figure 10 Enter Pipe ID Screen (Metric) Initially, the hundreds unit (050.0) will blink.

  • Page 17: Pulse Output

    Micronics U1000-HM User Manual If any of the parameters need to be changed from the default values, for example different units are required, then the menu system must be activated via the password (see section 8). 6.2 Pulse output Pulse output can be set up to operate in four modes, namely volumetric, frequency, energy or Low Flow Alarm.

  • Page 18: Modbus

    Both of these faults will clear the status bit. Modbus U1000 Description Notes Register Register 40001 Device ID 0xac for the U1000-HM 40002 Status 0= fault, 1= system ok 40003 Hot or Cold 0x04 for hot 0x0c for cold 40004 Serial number...

  • Page 19: Information Screens

    Micronics U1000-HM User Manual 7.1 Information screens Temperature dT: H 30.0 C 23.0: 7.0 Λ Total Flow This screen is not shown if Select 1012.23 litres Totals is set to Off. Λ Diagnostics Sig 80% > 100 l/min Λ Λ...

  • Page 20: Password Controlled Menus

    Micronics U1000-HM User Manual 8 Password Controlled Menus The password controlled menu allows the user some flexibility to change the default settings: User Password (71360):  Change the dimensions from mm to inches or vice-versa.  Change from Flow to Velocity Measurement ...
  • Page 21 Micronics U1000-HM User Manual The flow chart shown in Fig.14 shows the user password menu structure. To skip over any  menu item that should remain unchanged, simply press the key. 71360 MENU Invalid &  OR No input for 10 seconds...
  • Page 22 Micronics U1000-HM User Manual SETUP MENU Range 0.79 – 4.33 2.000 inches Inches &  Select Dimensions: Invalid mm | inches &  mm &  Invalid & Range 20 – 110mm Enter Pipe ID: Enter Pipe ID:  050.0 mm 050.0 mm...
  • Page 23 Micronics U1000-HM User Manual PULSE OUTPUT MENU Off &  Select Pulse: ON | OFF Λ Test mode press V or generate a 20ms pulse On &  Pulse Type: Energy Energy &  Low Flowl Alarm Freq & ...
  • Page 24 Micronics U1000-HM User Manual CALIBRATION MENU Damping Time [s]: Invalid &   Range 0.00 – 0.50 Zero Cut-off: 0.10 m/s 0.10 m/s Valid &  V To Set Zero Offset: Zero Offset Averaging…9 To Clear 0.000 l/min Done Invalid & ...

  • Page 25: Diagnostics Menu

    Micronics U1000-HM User Manual 9 Diagnostics Menu The diagnostics menu provides some additional information about the heat meter and its > setup. The menu can be accessed by pressing the key from flow reading screen. The menu shown below describes the various diagnostics items.

  • Page 26: Relocation Of Guide Rail

    Micronics U1000-HM User Manual Instrument Type: Factory set type of energy exchange, either Heating or Heating Chiller. Factory set location of the flow measurement, either Flow Installation: or Return. Flow Side Factory set fluid. Fluid Type: Water Figure 18 Diagnostics Menu 10 Relocation of guide rail If it is necessary to relocate the guide rail and sensor assembly use the following procedure.

  • Page 27: Appendix I - U1000-Hm Specification

    Micronics U1000-HM User Manual 11 Appendix I – U1000-HM Specification Table 1 lists the U1000-HM Product Specification. General Measuring Technique Transit time Measurement channels Timing Resolution ±50ps Turn down ratio 200:1 Flow velocity range 0.1 to 10m/s bidirectional Applicable Fluid types Clean water with <...

  • Page 28: Appendix Ii - Default Values

    Micronics U1000-HM User Manual Environmental Pipe temperature 0°C to 85°C Operating temperature 0°C to 50°C (Electronics) Storage temperature -10°C to 60°C Humidity 90% RH at 50°C Max Display 2 line x 16 characters Viewing angle Min 30°, Max 40° Active area 83mm (W) x 18.6mm(H)

  • Page 29: Appendix Iii - Error And Warning Messages

    Micronics U1000-HM User Manual 13 Appendix III – Error and Warning Messages System errors There are three possible ‘System Error’ messages that can be displayed. These are: 1. Poor Signal. The unit is unable to detect a signal from one or both transducers. If this message persists the sensors will need to be relocated.

  • Page 30: Declaration Of Conformity

    Micronics U1000-HM User Manual 3. When programming a Volume Pulse output the pulse width is limited to the range 3 to 99ms. If an invalid value is entered then the following warning message is displayed. Range 3 - 99 0000.0 4.
  • Page 31 Micronics U1000-HM User Manual Registered Office: Micronics Limited, Knaves Beech Business Centre, Davies Way, Loudwater, Buckinghamshire, HP10 9QR Web site www.micronicsflowmeters.com Tel: +44 (1628) 810456 Fax: +44 (1628) 531540 Issue 1.4 Page 31 Directors E.J. Farnon, M.A. Farnon Registration No. 1289680...

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