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Nivetec Micronics U1000-HM User Manual

Clamp on ultrasonic heat meter
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Micronics U1000-HM
Clamp On Ultrasonic Heat Meter
User Manual
Issue 2.2
Page 1

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Summary of Contents for Nivetec Micronics U1000-HM

  • Page 1 Micronics U1000-HM Clamp On Ultrasonic Heat Meter User Manual Issue 2.2 Page 1...

  • Page 2: Table Of Contents

    Micronics U1000-HM User Manual Table of Contents General Description ............................. 3 Quick Start Procedure ..........................4 How does it work? ............................5 User interface .............................. 6 Key switches ............................6 Installing the U1000-HM ..........................7 Preparation ............................8 Sensor separation ..........................8 Attaching the U1000-HM to the pipe ....................

  • Page 3: General Description

    Micronics U1000-HM User Manual 1 General Description  Fixed installation, clamp-on heat meter  Easy to install  Requires the minimum of information to be entered by the user  Electronics and guide rail housings form an integral unit  Attached to the pipe using the supplied jubilee clips ...

  • 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. Wire the electronics up to a 12 to 24V ac or dc power supply (7VA minimum per instrument) via the Blue and Brown wires.

  • 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 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 LEDs Sig : 87% 246.3 l/min Figure 2 U1000-HM User Interface 4.1 Key Switches >...
  • Page 7 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 LEDs Sig : 87% Sig : 87% 246.3 l/min Figure 2 U1000-HM User Interface 4.1 Key Switches >...

  • Page 8: 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 LEDs Sig : 87% Sig : 87% 246.3 l/min Figure 2 U1000-HM User Interface 4.1 Key Switches >...

  • Page 9: Installing The U1000-Hm

    Micronics U1000-HM User Manual 5 Installing The U1000-HM Possible Air Distorted Flow Profile Uniform Flow Profile Guide rail Possible sludge Flow 10 x Diameter Valid transducer location 20 x Diameter Figure 3 Location of Transducers Flow For correct measurement of the energy transfer being measured by the instrument the flow measurement needs to be made on the hot side of the system as near to the hot temperature sensor as possible.

  • Page 10: 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 :- Instrument Type Heating or Chiller Installation...
  • Page 11 Micronics U1000-HM User Manual The diagram below shows how to adjust the separation of the sensors Figure 5 Separation Setting Issue 2.2 Page 9...

  • Page 12: Attaching The U1000-Hm To The Pipe

    Micronics U1000-HM User Manual 5.3 Attaching The U1000-HM To The Pipe After applying the Gel pads centrally on the sensors, follow the four steps shown in Figure 6 below to attach the U1000-HM to the pipe. Remove the covers from the Gel pads Ensure there are no air bubbles between pad and sensor base Clamp guide rail and sensor assembly to pipe,...

  • Page 13: 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 show how these are fitted around the pipe.

  • Page 14: 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 15: U1000-Hm Interface Cables

    Micronics U1000-HM User Manual 5.6 U1000-HM Interface Cables The U1000-HM interface cable supplied is a 6-core cable for power and pulse output connections and a separate 4 core plug-in cable for the Modbus connections. Figure 8. U1000-HM Interface Cable Power The un-insulated wire is the connection to the screen of the cable and should be earthed for full immunity to electrical noise.
  • Page 16 Micronics U1000-HM User Manual  Correct 24VAC supply wiring, no connection to ground.  Incorrect 24V AC wiring, centertapped earth connection. The communications may fail if the Modbus master isn’t galvanically isolated.  Incorrect 24V AC wiring, earth low side connection. The communications may fail if the Modbus master isn’t galvanically isolated.

  • Page 17: Pulse Output Connection

    Micronics U1000-HM User Manual 5.8 Pulse Output Connection The isolated pulse output is provided by a SPNO MOSFET Relay which has a maximum load current of 500mA and maximum load voltage of 48V AC. The relay also provides 2500V isolation, between the sensor’s electronics and the outside world.

  • Page 18: Powering Up For The First Time

    Micronics U1000-HM User Manual 6 Powering Up For The First Time Powering up for the first time will initiate the sequence shown in Figure 10: Select the option required and press the Figure 10 initial power up screens Issue 2.2 Page 16...
  • Page 19 Micronics U1000-HM User Manual 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 20: How To Enter The Pipe Id

    Micronics U1000-HM User Manual 6.1 How To Enter The Pipe ID Figure 11 shows the Enter Pipe ID screen after an initial power up. Enter Pipe ID: 050.00 mm Figure 11 Enter Pipe ID Screen (Metric) Initially, the hundreds unit (050.0) will blink. Press the key to increment the hundreds digit (050.0) in the sequence 0, 1.

  • Page 21: 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: Volume, Frequency, Energy or Low Flow Alarm. 6.2.1 Volumetric Mode In Volumetric mode, each pulse output represents a measured volume of 10 litres (default value).

  • Page 22: Modbus

    Micronics U1000-HM User Manual 6.3 Modbus The Modbus RTU interface is configured via the Modbus sub menu in the password controlled menu. The data rate can be selected in the range 1200 to 38400. The address can be set in the range 1 to 126. The instrument responds to the “read holding registers”...

  • Page 23: Subsequent Power-On Sequence

    Micronics U1000-HM User Manual 7 Subsequent Power-ON Sequence If the power supply is cycled OFF then ON after the pipe data has been entered, all subsequent start- ups will use the same configuration as was previously entered. If the configuration needs to be changed for any reason, the user can make use of the password-controlled menu as described in section 8.

  • Page 24: 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 25 Micronics U1000-HM User Manual 71360 MENU Invalid &  OR No input for 10 seconds Sig: 87% l/min 246.3  Enter Password: *****  Setup Menu  User Menu: Setup Λ  Modbus Menu User Menu: Modbus Setup Λ Pulse Output Menu ...
  • Page 26 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 2.000 inches Valid &...
  • Page 27 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 Flow Alarm Freq &  &...
  • Page 28 Micronics U1000-HM User Manual MODBUS MENU Invalid &  Range 1.0 to 126.0 Modbus Address: Valid &   Modbus Baud: 38400  Figure 18 Modbus menu Issue 2.2 Page 26...
  • Page 29 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 30: 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. DIAGNOSTICS MENU exit Diagnostics...

  • Page 31: Relocation Of Guide Rail

    Micronics U1000-HM User Manual Instrument Type: Set type of energy exchange, either Heating or Chiller. Heating Set location of the flow measurement, either Flow or Installation: Return. Flow Side Set fluid, either water or 30% glycol Fluid Type: Water Figure 20 Diagnostics Menu 10 Relocation Of Guide Rail If it is necessary to relocate the guide rail and sensor assembly use the following procedure.

  • Page 32: 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 33 Micronics U1000-HM User Manual Temperature sensors Type PT100 Class B 4 wire Range 2 to 85°C (36 to 185°F) Resolution 0.1 °C (0.18°F) Enclosure Material Plastic Polycarbonate Fixing Pipe mountable Degree of Protection IP54 Flammability Rating UL94 V-0 Dimensions 250mm x 48mm x 90mm (electronics + guide rail) Weight 0.5kg Environmental...

  • Page 34: Appendix Ii - Default Values

    Micronics U1000-HM User Manual 12 Appendix II – Default Values The settings will be configured at the factory for either metric or imperial units. Parameter Default Value Parameter Default Value Dimensions Calibration Factor 1.000 Flow Rate l / min Zero Cut-off 0.10 m / s Pipe ID 50 (mm)

  • Page 35: 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 36 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 37 Micronics U1000-HM User Manual Issue 2.2 Page 35...
  • Page 38 Micronics U1000-HM User Manual  Correct 24VAC supply wiring, no connection to ground.  Incorrect 24V AC wiring, centertapped earth connection. The communications may fail if the Modbus master isn’t galvanically isolated.  Incorrect 24V AC wiring, earth low side connection. The communications may fail if the Modbus master isn’t galvanically isolated.
  • Page 39 Micronics U1000-HM User Manual 6 Powering Up For The First Time Powering up for the first time will initiate the sequence shown in Figure 10: Select the option required and press the Figure 10 initial power up screens Issue 2.2 Page 16...
  • Page 40 Micronics U1000-HM User Manual 6.1 How To Enter The Pipe ID Figure 11 shows the Enter Pipe ID screen after an initial power up. Enter Pipe ID: 050.00 mm Figure 11 Enter Pipe ID Screen (Metric) Initially, the hundreds unit (050.0) will blink. Press the key to increment the hundreds digit (050.0) in the sequence 0, 1.
  • Page 41 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 42 Micronics U1000-HM User Manual 71360 MENU Invalid &  OR No input for 10 seconds Sig: 87% l/min 246.3  Enter Password: *****  Setup Menu User Menu:  Setup Λ Modbus Menu  User Menu: Modbus Setup Λ Pulse Output Menu User Menu: ...
  • Page 43 Micronics U1000-HM User Manual SETUP MENU Range 0.79 – 4.33 2.000 inches Select Dimensions: Inches &  mm | inches Invalid &  mm &  Invalid & Range 20 – 110mm Enter Pipe ID: Enter Pipe ID:  2.000 inches 050.0 mm 050.0 mm Valid &...
  • Page 44 Micronics U1000-HM User Manual PULSE OUTPUT MENU Select Pulse: Off &  ON | OFF Test mode press V or Λ generate a 20ms pulse On &  Pulse Type: Energy Low Flow Alarm Energy &  Freq &  &...
  • Page 45 Micronics U1000-HM User Manual MODBUS MENU Invalid &  Range 1.0 to 126.0 Modbus Address: Valid &   Modbus Baud: 38400  Figure 18 Modbus menu Issue 2.2 Page 26...
  • Page 46 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 To Clear Averaging…9 0.000 l/min Done Invalid &  ...
  • Page 47 Micronics U1000-HM User Manual Instrument Type: Set type of energy exchange, either Heating or Chiller. Heating Set location of the flow measurement, either Flow or Installation: Return. Flow Side Set fluid, either water or 30% glycol Fluid Type: Water Figure 20 Diagnostics Menu 10 Relocation Of Guide Rail If it is necessary to relocate the guide rail and sensor assembly use the following procedure.
  • Page 48 Micronics U1000-HM User Manual  Correct 24VAC supply wiring, no connection to ground.  Incorrect 24V AC wiring, centertapped earth connection. The communications may fail if the Modbus master isn’t galvanically isolated.  Incorrect 24V AC wiring, earth low side connection. The communications may fail if the Modbus master isn’t galvanically isolated.
  • Page 49 Micronics U1000-HM User Manual 6 Powering Up For The First Time Powering up for the first time will initiate the sequence shown in Figure 10: Select the option required and press the Figure 10 initial power up screens Issue 2.2 Page 16...
  • Page 50 Micronics U1000-HM User Manual 6.1 How To Enter The Pipe ID Figure 11 shows the Enter Pipe ID screen after an initial power up. Enter Pipe ID: 050.00 mm Figure 11 Enter Pipe ID Screen (Metric) Initially, the hundreds unit (050.0) will blink. Press the key to increment the hundreds digit (050.0) in the sequence 0, 1.
  • Page 51 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 52 Micronics U1000-HM User Manual 71360 MENU Invalid &  OR No input for 10 seconds Sig: 87% l/min 246.3  Enter Password: *****  Setup Menu User Menu:  Setup Λ Modbus Menu  User Menu: Modbus Setup Λ Pulse Output Menu User Menu: ...
  • Page 53 Micronics U1000-HM User Manual SETUP MENU Range 0.79 – 4.33 2.000 inches Select Dimensions: Inches &  mm | inches Invalid &  mm &  Invalid & Range 20 – 110mm Enter Pipe ID: Enter Pipe ID:  2.000 inches 050.0 mm 050.0 mm Valid &...
  • Page 54 Micronics U1000-HM User Manual PULSE OUTPUT MENU Select Pulse: Off &  ON | OFF Test mode press V or Λ generate a 20ms pulse On &  Pulse Type: Energy Low Flow Alarm Energy &  Freq &  &...
  • Page 55 Micronics U1000-HM User Manual MODBUS MENU Invalid &  Range 1.0 to 126.0 Modbus Address: Valid &   Modbus Baud: 38400  Figure 18 Modbus menu Issue 2.2 Page 26...
  • Page 56 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 To Clear Averaging…9 0.000 l/min Done Invalid &  ...
  • Page 57 Micronics U1000-HM User Manual Instrument Type: Set type of energy exchange, either Heating or Chiller. Heating Set location of the flow measurement, either Flow or Installation: Return. Flow Side Set fluid, either water or 30% glycol Fluid Type: Water Figure 20 Diagnostics Menu 10 Relocation Of Guide Rail If it is necessary to relocate the guide rail and sensor assembly use the following procedure.

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