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Summary of Contents for Micronics U1000-U
- Page 1 U1000-U Ultrasonic Flowmeter (Universal) 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 1.5 Feb 17 Page 1...
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Page 2: Table Of Contents
Adaptors for small pipes ........................... 10 Attaching the U1000 to the pipe ........................11 U1000-U interface cable ........................... 12 Connecting the U1000-U to the Supply ......................12 Pulse Output connection ........................... 13 Current Output (If fitted) ..........................13 Cable Screen ..............................13 Powering up for the first time ............................ -
Page 3: General Description
Operates on steel, copper and plastic pipes with ID’s in the range 20mm (0.8”) to 110mm (4.3”) and a maximum wall thickness of 9mm for metal pipes and 10.5mm for plastic. Compact, rugged and reliable, the U1000-U has been designed to provide sustained performance in industrial environments. U1000-U standard features include: ... -
Page 4: Quick Start Procedure
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) 2. -
Page 5: How Does It Work
3 How does it work? The U1000-U 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
4 User interface Figure 2 illustrates the U1000-U user interface comprising:- One 2 line x 16 character LCD with backlight Four tactile key switches Two LED’s Figure 2 U1000-U User Interface 4.1 Key switches > Selection key. Allows the user to select between options on the display. -
Page 7: Installing The U1000-U
45°with respect to the top of the pipe. The U1000-U 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
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. 2. Prepare the pipe by degreasing it and removing any loose material or flaking paint in order to obtain the best possible surface. - Page 9 The diagram below shows how to adjust the separation of the sensors Figure 5 Separation Setting NOTE. When the sensors have been moved to the correct setting and the guide rail is attached to the pipe REMOVE the sensor holding screws, which will allow the spring loaded transducers to make contact with the pipe.
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Page 10: Adaptors For Small Pipes
5.3 Adaptors for small pipes Less than 40mm outside diameter 40 to 60mm outside diameter Greater than 60mm outside diameter Figure 6 Pipe Adaptors Adaptors are supplied for use on small pipes. The diagrams above show how these are fitted around the pipe. The top pipe adaptor clips into the ends of the guide rail. -
Page 11: Attaching The U1000 To The Pipe
5.4 Attaching the U1000 to the pipe After applying the Gel pads centrally on the sensors, then follow the four steps shown in Figure 7 below to attach the U1000-U to the pipe Remove the RED protective overlay from the Gel pads. -
Page 12: U1000-U Interface Cable
5.6 Connecting the U1000-U to the Supply The U1000-U will operate within the voltage range 12 - 24V ac/dc. Supply to have a minimum rating of 7VA. Connect the external power supply to the Brown and Blue wires of the six core cable. For full compliance with EMC regulation a 12V supply is recommended for domestic and light industrial applications. -
Page 13: Pulse Output Connection
5.7 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. The pulse output is available at the White and Green wires. Electrically this is a volt free contact closure. -
Page 14: Powering Up For The First Time
2. The user enters the pipe ID and then the material by scrolling through the available list. (Refer to section 5.2) 3. The U1000-U checks for a valid signal 4. If a valid signal is found, signal strength and flow magnitude are displayed. The signal strength should be at least 40% for reliable operation. -
Page 15: How To Enter The Pipe Id
6.1 How to enter the Pipe ID Figure 10 shows the Enter Pipe ID screen after an initial power up. Figure 10 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. Press Λ... -
Page 16: Pulse Output
If any of the parameters need to be changed from the default values, for example different units are required, and 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 one of four modes, namely volumetric, frequency, Low Flow Alarm and Loss of Flow (Signal) Alarm. -
Page 17: 4-20Ma Current Output (If Fitted)
If N/C and alarm not triggered -> Keypad LED on and contact closed If N/C and alarm triggered -> Keypad LED off and contact open 6.3 4-20mA Current output (If fitted) The default 4-20mA output setting is ON, and the 4-20mA LED on the keypad will be illuminated. The default flow for 20mA output will be automatically set depending on the pipe size. -
Page 18: General Procedure For Changing Menu Settings
8.1 General procedure for changing menu settings 8.1.1 Selection menus When a password controlled menu is selected the procedure for changing the default setting is the same for all menus. For example, consider the Flow Units menu shown in Figure 11. Flow Units: l/min | l/s Figure 11 Flow Units menu... -
Page 19: User Password Controlled Menu Structure
Press the key once to select units (1250.0) which will now blink > Press the key twice to decrement the units from 0 to 8 (1258.0) Press the key to confirm the change All numeric data menus can be changed in this way. 8.2 User Password controlled menu structure ... - Page 20 71360 MENU Sig: 87% l/min 246.3 Invalid & OR No input for 10 seconds Enter Password: ***** Setup Menu User Menu: Setup Pulse Output Menu User Menu: Pulse Output User Menu: Current Output Menu Current Output Calibration Menu User Menu: ...
- Page 21 SETUP MENU Range 0.79 – 4.33 2.000 inches Select Dims: Invalid mm | inches Inches & & mm & Invalid & Range 20 – 110mm Enter Pipe ID: Enter Pipe ID: 050.0 mm 2.000 inches 050.0 mm Valid &...
- Page 22 PULSE OUTPUT MENU Select Pulse: Off & OFF | ON Test mode, press V or On & Λ to generate a 20ms pulse Pulse Type: Volume/Low Flow Alarm/ Signal Loss/Frequency Freq & Volume & Low Flow & Signal Loss &...
- Page 23 CURRENT OUTPUT MENU Select 4-20mA: ON | OFF ON & Flow @ 20mA 1000.0 OFF & Valid & Flow @ 4mA 0000.0 Valid & CALIBRATION MENU Damping Time [s] Invalid & Range 0.00 – 0.50 Zero Cut-off: 0.10 m/s 0.10 m/s...
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Page 24: Diagnostics Menu
9 Diagnostics Menu The diagnostics menu provides some additional information about the flowmeter and its setup. The menu can be accessed by pressing the key from the main flow-reading screen. The menu shown below describes the various diagnostics items. DIAGNOSTICS MENU Press To exit the Diagnostics menu Sig: 87%... -
Page 25: Relocation Of Guide Rail
10 Relocation of guide rail If it is necessary to relocated the guide rail and sensor assembly use the following procedure 1. Remove complete assembly from the pipe 2. Insert a small screwdriver in the hole at the end of the guide rail moulding and lever up the clip holding the electronics assembly by pressing down on the screwdriver as shown below. -
Page 26: Appendix I - U1000-U Specification
11 Appendix I – U1000-U Specification Table 1 lists the U1000-U 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 Applicable Fluid types Clean water with < 3% by volume of particulate content. -
Page 27: Appendix Ii - Default Values
Display 2 line x 16 characters Viewing angle Min 30°, Max 40° Active area 83mm (W) x 18.6mm(H) Keypad Format 4 key tactile feedback membrane keypad 12 Appendix II – Default values The settings will be configured at the factory for either metric or imperial units. Table 2 lists the metric default values. -
Page 28: Appendix Iii - Error And Warning Messages
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 displayed as “-----“. The unit is unable to detect a signal from one or both transducers. -
Page 29: Declaration Of Conformity
5. When programming the Zero Cut-off this is limited to the range 0.000 to 0.500. If an invalid value is entered then the following warning message is displayed. Range 0.00 – 0.500 0000.0 6. When programming the Calibration Factor this is limited to the range 0.5 to 1.5. If an invalid value is entered then the following warning message is displayed. - Page 30 Issue 1.5 Feb 17 Page 30...
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