PORTAFLOW 216 Flowmeter Operating Manual Micronics Ltd, Knaves Beech Business Centre, Davies Way, Loudwater, High Wycombe, Bucks. HP10 9QR TEL: +44 (0)1628 810456 FAX: +44 (0)1628 531540 e-mail: sales@micronicsltd.co.uk www.micronicsltd.co.uk Publication: March 2001 Document Number 740-1001D Software Version: 1.
CONTENTS Introduction Fast track procedure Parts and accessories Battery and Charger Transducers/Separation Distance/Fluid Types Programming – Main Menu Main Menu – Quick Start Main Menu – View/Edit site data Main Menu – Select sensor mode Main Menu – Set up Instrument Pulse output/ Display/Signal Enhancement Keypad Options Cutoff (m/s) Set zero flow Total Volume reset Damping time/ Correction Factor Calibration Factor Diagnostics Status/Error/Warning messages Application Information Transducer positioning
Select Quick Start - Press ENTER. Dimension Units? – Scroll to select units required, press ENTER. Pipe OD – Enter data, press ENTER. Pipe Wall Thickness – Enter data, press ENTER. Pipe Lining Thickness – Enter data, press ENTER. ENTER Zero if there is no lining on the application. Select Wall Material – Select using scroll keys, press ENTER. Select Lining Material – This will only be displayed if a lining thickness has been entered. Select using the scroll keys, press ENTER.
For Reflex Mode attach the guide rail (Figure 3) to the pipe as shown below. Turn the locking nut on the fixed transducer anti-clockwise, screwing it down on to the pipe surface. Do not over-tighten , causing the guide rail to lift off the pipe. Set the separation distance (Figure 3) by sliding the floating transducer along the scale until the front edge of the block is at the recommended distance displayed by the electronics.
Figure 5:- Battery mains charger. Is supplied with additional plug heads for use Worldwide. The charger is rated 90Vac to 265Vac 47/63mhz @1.1A Battery Circuit A battery management circuit controls the battery recharge. The circuit helps to prevent the batteries from being damaged through overcharging. The circuit automatically cuts off the high-level charge current after 4hrs, after which it will provide only a trickle charge.
Separation Distance The instrument calculates the separation distance when all parameters have been entered via the keypad. Also the instrument calculates the maximum flow velocity allowed with the standard sensors and indicates whether Reflex or Diagonal mode should be used. Ultrasonic Couplant Ultrasonic couplant/grease must be used on the transducer face to interface with the pipe wall.
The instrument now asks for the Pipe outside diameter? After entering the outside diameter in millimeters press ENTER. QUICK START Dimension units Pipe O.D.? mm 58.0 Pipe wall thickness now appears on the display. Enter the pipe wall thickness in millimeters, then press ENTER. QUICK START Dimension units Pipe O.D.? Wall thick? MILLIMETRES 58.0 4.0 Pipe lining thickness now appears on the display. If the pipe you are measuring has a lining, enter the Pipe lining thickness.
QUICK START Select pipe lining material: Steel Rubber Glass Epoxy Concrete Other (mps) Select fluid type now appears on the display. Use the scroll keys to select the fluid type and press ENTER. If the liquid is not listed select Other and enter a liquid sound speed in metres/second. The sound speed information can be found in the back of the manual under Liquid Sound Speeds.
The display will now show the sensor seperation distance. Adjust the moveable sensor to the required distance. Press ENTER to read flow. Set sensor Separation to XXX ENTER to continue READ FLOW now appears on the display. Batt CHRG Sig 48% (ERROR MESSAGES APPEAR HERE) m/s When reading volumetric flow the instrument will display a positive and negative total. Selecting OPTIONS from the keypad can reset these totals (See page 14). The instrument will continually display the battery and signal levels.
Pipe O.D. Wall thick Lining Wall Lining Fluid Read flow Exit 58.0 4.0 0.0 MILD STEEL --------WATER Note: • Site Zero is always the QUICK START data and cannot be changed. • Changing the data in any site is automatically saved when leaving this menu. Data will have to be re-entered to over ride the old data. List Sites Selecting LIST SITES allows the user to view the names of up to 20 sites, numbers 1-5 appear first. Pressing ENTER will display sites from 6-10.
Read Flow Selecting Read flow informs the user of the mode of operation and the approximate maximum flow rate. Press the appropriate key can change the units required. Attach sensor set in REFLEX mode Approx. max. flow: 7.22 m/s ENTER to continue SCROLL changes mode Pressing ENTER asks the user to enter a temperature in °C. Fluid temp? (°C) 20.0 Now press scroll (up). The instrument will display the separation distance before displaying flow.
Main Menu - Set Up Instrument Pulse Output Key This can only be operated in flow mode. Use the scroll key to move the cursor up or down the display. To change the flow units press the key required. This will also change the flow units when returning to the flow mode. Changing the flow units will also re-scale the litres per pulse. PULSE OUTPUT Flow units Output OFF Max. pulse rate1 per sec Litres per pulse12.76 Exit Outputs allow the user to select from the following.
Sensor Parameters This facility is password protected. It stores sensor information used by Micronics and is not available for the user. WARNING! Sensor should only be edited following instruction from the factory Enter password Factory Settings The facility is used by Micronics in the process of instrument calibration. Press ENTER takes you back to SETUP INSTRUMENT MENU. Exit Means EXIT and will take you back to the Main Menu.
Set Zero Flow On some applications and in some conditions it may be that although there is no flow the instrument may show a small offset due to system noise. The offset can be cancelled out and will increase the accuracy of the instrument. Selecting this option and pressing ENTER the display will show the following. Stop the flow COMPLETELY and press ENTER or SCROLL to cancel Pressing ENTER before the flow has stopped will result in an error message asking if you are you sure the flow has stopped.
Measurement µs A point in the signal transmitted, where the flow measurement is taken from. It is used to see if the signal is being taken from the burst at the correct time to get the strongest signal. It is normally used on smaller pipes when the instrument is being used in double or triple bounce as signals can sometimes interfere with each other. This value is normally a few µs below the Up µs, Dn µs value. Phase up/dn µs Only valid if Calculated µs and Up µs, Dn µs are correct.
Warning Messages W1: CHECK SITE DATA This message occurs when the application information has been entered incorrectly and the wrong sensors have been attached to the wrong pipe size causing the system timing to be in error. The site data needs to be checked and the instrument reprogrammed. W2: SIGNAL TIMING POOR Unstable signal timing or differing up/down stream times indicate that the liquid is aerated or pipe surface is of poor quality.
Enter a lining thickness first This message appears when in VIEW/EDIT SITE DATA the user has tried to enter a pipe lining material before entering a thickness. APPLICATION INFORMATION The PORTAFLOW 216 is a Transit Time ultrasonic flow meter. It has been designed to work with Clamp On transducers, thus enabling flowing liquid within a closed pipe to be measured accurately without the need for any mechanical parts to be inserted either through the pipe wall or protrude into the flow system.
TRANSDUCER POSITIONING As the transducers for the Portaflow 216 are clamped to the outside surface of the pipe, the meter has no way of determining exactly what is happening to the liquid. The assumption therefore has to be made that the liquid is flowing uniformly along the pipe either under fully turbulent conditions or under laminar flow conditions. Further it is assumed that the flow velocity profile is uniform for 360° around the pipe axis.
An uneven surface that prevents the transducers from sitting flat on the surface of the pipe can cause Signal Level and Zero Offset problems. The following procedure is offered as a guide to good practice with respect to positioning and mounting the transducers. 1) Select the site following the rules laid down on page 19 - Transducer Positioning. 2) Inspect the surface of the pipe to ensure it is free from rust or is not uneven for any reason.
If the Portaflow 216 is to be used on laminar flow applications it will be necessary to calculate the Reynolds No for each application. To calculate the Reynolds No it is necessary to know the Kinematic viscosity in Centistokes; the flow velocity and the pipe inside diameter.
Figure 12: Attaching the sensor to the pipe Gull wing and spring attachment Program the Electronics with the application data to obtain the calculated separation distance. Measure the circumference of the pipe and mark a position at the halfway point. (Outside Diameter of the pipe times 3.142 divided by 2). Apply grease to the second sensor and plug the blue connector into the top of the sensor. Follow (figure 13) next diagram to set up the sep distance.
PORTAFLOW™ 216 SPECIFICATION ENCLOSURE: Protection Class Material Weight Dimensions Display Keypad Connections Temperature Range SUPPLY VOLTAGE: Power supply/charger IP55 ABS < 1.5 Kg 235 x 125 x 42 mm Graphics LCD display 16 Key Tactile Membrane IP65 Lemo Connectors 0°C to +50°C (operating) -10° to +60°C (storage) Input Max.
Figure 15:- PORTAFLOW 216 Flow Range 200 150 100 75 50 25 13 0 0.07 0.10 0.13 0.02 0.03 0.04 0.22 0.07 0.29 0.09 0.32 0.10 0.42 0.13 5.9 1.8 8.2 2.5 11.40 14.76 23.94 30.90 fps 3.5 4.5 7.3 9.
LIQUID SOUND SPEEDS Liquid Sound Speeds Note: All the following sound speeds are calculated at 25°C. The speed of sound in liquids at temperatures other than 25°C are calculated as follows. Example: Substance Glycol Water, distilled (49,50) Form Index C2H6O2 H2O Specific Gravity 1.113 0.996 Sound Speed 1658 1498 ∆v/ºC m/s/ºC 2.1 -2.4 For every 1°C higher than 25°C take off the value in the Δv/°C- m/s/°C column. Glycol at 50°C = 1658 - (2.1 x 25) = 1605.
Substance Acetic anhydride (22) Acetic acid, anhydride (22) Acetic acid, nitrile Acetic acid, ethyl ester (33) Acetic acid, methyl ester Acetone Acetonitrile Acetonylacetone Acetylene dichloride Acetylene tetrabromide (47) Acetylene tetrachloride (47) Alcohol Alkazene-13 Alkazene-25 2-Amino-ethanol 2-Aminotolidine (46) 4-Aminotolidine (46) Ammonia (35) Amorphous Polyolefin t-Amyl alcohol Aminobenzene (41) Aniline (41) Argon (45) Azine Benzene (29,40,41) Benzol (29,40,41) Bromine (21) Bromo-benzene (46) 1-Br
Cyclohexanol Cyclohexanone Decane (46) 1-Decene (27) n-Decylene (27) Diacetyl Diamylamine 1,2 Dibromo-ethane (47) trans-1,2-Dibromoethene(47) Dibutyl phthalate Dichloro-t-butyl alcohol 2,3 Dichlorodioxane Dichlorodifluoromethane (3) (Freon 12) 1,2 Dichloro ethane (47) cis 1,2-Dichloro-Ethene(3,47) trans 1,2-Dichloro-ethene(3,47) Dichloro-fluoromethane (3) (Freon 21) 1-2-Dichlorohexafluoro cyclobutane (47) 1-3-Dichloro-isobutane Dichloro methane (3) 1,1-Dichloro-1,2,2,2 tetra fluoroethane Diethyl ether Dieth
Fluoro-benzene (46) Formaldehyde, methyl ester Formamide Formic acid, amide Freon R12 Furfural Furfuryl alcohol Fural 2-Furaldehyde 2-Furancarboxaldehyde 2-Furyl-Methanol Gallium Glycerin Glycerol Glycol Helium (45) Heptane (22,23) n-Heptane (29,33) Hexachloro-Cyclopentadiene(47) Hexadecane (23) Hexalin Hexane (16,22,23) n-Hexane (29,33) 2,5-Hexanedione n-Hexanol Hexahydrobenzene (15) Hexahydrophenol Hexamethylene (15) Hydrogen (45) 2-Hydroxy-toluene (46) 3-Hydroxy-tolune (46) Iodo-benzene (46) Iodo-ethane
2-Methylphenol (46) 3-Methylphenol (46) Milk, homogenized Morpholine Naphtha Natural Gas (37) Neon (45) Nitrobenzene (46) Nitrogen (45) Nitromethane (43) Nonane (23) 1-Nonene (27) Octane (23) n-Octane (29) 1-Octene (27) Oil of Camphor Sassafrassy Oil, Car (SAE 20a.
Propylene (17,18,35) Pyridine Refrigerant 11 (3,4) Refrigerant 12 (3) Refrigerant 14 (14) Refrigerant 21 (3) Refrigerant 22 (3) Refrigerant 113 (3) Refrigerant 114 (3) Refrigerant 115 (3) Refrigerant C318 (3) Selenium (8) Silicone (30 cp) Sodium fluoride (42) Sodium nitrate (48) Sodium nitrite (48) Solvesso 3 Spirit of wine Sulphur (7,8,10) Sulphuric acid (1) Tellurium (7) 1,1,2,2-Tetrabromo-ethane(47) 1,1,2,2-Tetrachloro-ethane(67) Tetrachloroethane (46) Tetrachloro-ethene (47) Tetrachloro-methane (33,47)
PORTAFLOW 216 Battery Charge circuit Operation. Charging Controller IC: A Maxim IC MAX712 or MAX713 controls the Ni-Cd and Ni-Mh battery charger. It has two modes, fast charge and trickle charge; an output indicates the fast-charge status. In both modes it supplies, via a PNP power transistor, a constant current to the battery, by keeping a constant voltage across a current sensing resistor.
Quicker full charge: The fastest way to fully charge the battery is to charge for 4.5 hrs, then switch the power supply off and on again, thus re-starting the fast charge for another 4.5 hr period, followed by trickle charge. Warning: If the battery is getting warm, that would indicate that it is full, and the power supply should not be connected again - overcharging reduces the life of the battery.
Micronics Ltd Knaves Beech Business Centre, Davies Way, Loudwater, High Wycombe, Bucks. HP10 9QR U.K. Telephone: +44 (0) 1628 810456 Fax: +44 (0) 1628 531540 www.micronicsltd.co.uk e-mail – sales@micronicsltd.co.
