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Titan Metraflow 240-020, Instruction Manual

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Titan Metraflow 240-020 Instruction Manual Download Page 23

 

23

 

 

 

©Titan Enterprises Ltd 2018 

 www.flowmeters.co.uk  

MetraflowManual_v1219 

 

 

The seventh flow in the table above is zero. This could have been a small bubble passing through the 
flow meter bore which could completely absorb the ultrasound. The median filter completely ignores 
this reading and for the zero reading returns the value of 3 from the results either side. This filter is 
particularly useful at low flows where a small dip in value could drop a result below the internal cut off 
levels. 

Summary of Contents for Metraflow 240-020

Page 1: ......

Page 2: ...2 SECTION CONTENTS PAGE NUMBER 1 General 3 2 Order Codes 3 3 Installation 3 4 Set Up 6 5 Technical Specification 26 6 Troubleshooting 29...

Page 3: ...erial with the fluid to be measured The user must make sure that the flowmeter selected is suitable for the application and that the chemical compatibility temperature and pressure requirements are wi...

Page 4: ...Position the meter either in a horizontal pipe or if in a vertical pipe with the flow in an upward direction This will ensure that any bubbles automatically clear the meter In a horizontal pipe confi...

Page 5: ...the USB connection This gives local computer display and an NPN pulse output only This may not be acceptable in situations where remote operation or further functions are required The unit will work w...

Page 6: ...ace and a suitable computer Below is a screen shot of the Configuration screen as it typically opens with the flowmeter connected When connected the software should automatically load the settings the...

Page 7: ...er Test outputs Unlock Lock user settings Diagnostic tools Software information The Software information panel has details including the flowmeter serial number and software versions currently running...

Page 8: ...ing the meter it is possible to detach the Flow Details and Advanced windows by dragging and dropping the bottom tabs away from the main window This allows the user to view those tabs whilst adjusting...

Page 9: ...9 Titan Enterprises Ltd 2018 www flowmeters co uk MetraflowManual_v1219...

Page 10: ...This is the time base for the flow rate and has the option of Second Minute or Hour Scale Factor Adjustment This is a fine tune adjustment on the signal to compensate for errors introduced by erratic...

Page 11: ...box is selected Display Mode The down arrow selects from the various display and Metraflow functions The options are Rate The display will show flow rate only Total The display will show total flow o...

Page 12: ...jittering with irregularities in the flow from for example a peristaltic pump The increments are arbitrary with the degree of damping approximately doubling with each level Increments go up to 5 whic...

Page 13: ...isabled and the input pin responds to an external input voltage which may be in the range of 0V to 30V The logic threshold is at 2V so this input can be driven directly from a logic signal at TTL leve...

Page 14: ...TO USERS ELECTRONICS Output Select this to use the PIN Wire colour assigned as a PULSE FLOW ALARM SINGLE OR DUAL or REVERSE FLOW output signal PULSE The Metraflow has two options for Pulse output conf...

Page 15: ...cy output If the meter is being used up to 1 L Min the pulse output and so resolution could be increased to five times this 600 000P L It is possible to send a test signal at varying Hz for each of th...

Page 16: ...for 3 seconds Note the alarm points are driven by the display value on the flow reading screen Any changes to the filter value of the display will affect the response time of the alarm points so ther...

Page 17: ...he user to send a signal from the assigned wire PIN when reverse flow is seen Selecting Invert will reverse the action of the signal Alarm Logic Table Analog Output There are four options on the drop...

Page 18: ...nal to the outputs of the meter using the Test Outputs Icon on the left hand side of the main screen Clicking opens a menu where you can choose a analogue output value which will be automatically sent...

Page 19: ...ting a PIN these check boxes can lock all of the settings or just the advanced user If you forget your PIN please contact you supplier for the default value Once entered all the setting parameters rem...

Page 20: ...Local Meter Display Stop the flow and operate the Capture Null button in the Advanced Tab of the User Interface Software or press both buttons on the top of the meter simultaneously for 5 seconds The...

Page 21: ...0 residual background noise will cause small readings even when there is no flow If readings are seen increase the value sequentially until no output is recorded typically around 0 002 l min REMOVING...

Page 22: ...an Filter This filter removes short term anomalies in the recorded flow e g an air bubble passing through It should be used with caution as it is theoretically possible that over use of this feature c...

Page 23: ...bubble passing through the flow meter bore which could completely absorb the ultrasound The median filter completely ignores this reading and for the zero reading returns the value of 3 from the resu...

Page 24: ...ter data on the PC when connected via the USB Storage File Click on the disc icon and create a file name in your chosen directory NOTE DO NOT USE SPACES IN THE FILE NAME Once created click select and...

Page 25: ...e all the required parameters have been chosen and file created logging is started by Clicking the Start Logging Button Local Display The Metraflow has local indication which is mimicked on the user i...

Page 26: ...Configurable In Out 4 20mA Analog Source 250mOhm Max 0 5VDC Analog 14 bit resolution 0 10VDC Analog 12 bit resolution Software Titan Interface Software Windows Based Software USB to PC Connection Para...

Page 27: ...rates At full flow it is in the order of 50ms but at lower flows several seconds This improves repeatability for the digital outputs and is similar in effect to the viewing filter when using the analo...

Page 28: ...volume reservoir or Glycol type fluids Gasses seriously affect the ultrasound and should be avoided It is recommended that the meter is always installed in a positive pressure system with a back press...

Page 29: ...flowmeter Flow reading incorrect after period of shut down Flow Signal incorrectly positioned Reset the meter power cycle Gas lock in pipe Purge line with high flow and restart meter Calibration incor...

Page 30: ...lues in the range boxes are adequate for the flow being measured Voltage too low Increase power to meter to 15VDC Analog output not correct Voltage too low Increase power to meter to 15VDC Settings in...

Page 31: ......

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