Dwyer Series PUB User Manual

Series PUB Portable Ultrasonic Flowmeter KitInstallation and Operating InstructionsBulletin F-PUB©Copyright 2012 Dwyer Instruments, Inc. Printed in US

1: General Description6 1.4.3 Power supply and battery chargingOperating power is provided by an internal battery that can be charged from the util

2: Installation 72: Installation2.1 Transducer PositioningFigure 2.1 Locating the transducersTo obtain the most accurate results, the condition

2: Installation8 2.2 Transducer Attachment The transducers are fitted to adjustable transducer holders which are secured to the pipe using wrap-arou

2: Installation 93. On each transducer holder, attach one end of a securing chain to a hook on the tensioning bar (B), wrap the chain (G) around the

3: Operating Procedures10 3: Operating ProceduresQUICK START VIEW EDIT SITE DATAEnter dataAttach sensorsFLOW READINGChoose site / check/edit data

3: Operating Procedures 113.1 Setting-up the Instrument3.1.1 Using the instrument for the first timeBefore you use your PUB for the first time you

3: Operating Procedures12 Setting the Date & TimeNote: If you make a mistake when entering the data press the Delete key to move the cursor back

3: Operating Procedures 133.2 Using the Quick Start MenuIf you want to perform a ‘one-time’ flow reading at a particular pipe location, the Quick St

3: Operating Procedures14 7. Select the pipe wall material from the list provided, then press the ENTER key.If the material is not listed select Oth

3: Operating Procedures 15Note: Do not press the ENTER key until the transducers are fitted and connected to the instrument.Attaching and connecting

3: Operating Procedures16 Flow monitoringThe FLOW READING screen is the one most used during normal monitoring operation. It shows the instantaneous

3: Operating Procedures 17Note: If you press the ENTER key before the transducers are fitted and connected to the instrument, the instrument will de

3: Operating Procedures18 3.4 Managing Named SitesIf you want to monitor a particular site location frequently you can set up a named ‘Site’ to stor

3: Operating Procedures 193.4.2 Changing a site nameTo change a site name, use the same method described above for generating a new site: but in th

3: Operating Procedures20 3.5.3 Adjusting the calibration factorWith the system running:1. Stop (Stall) the PUB’s totalizer facility and zero it (P

3: Operating Procedures 213.5.4 Adjusting the roughness factorThe roughness factor compensates for the condition of the internal pipe wall, as a ro

3: Operating Procedures22 With the system running in FLOW READING mode:3.5.5 Adjusting the damping factorBy averaging-out the flow rate over severa

3: Operating Procedures 233.6 Performing Monitoring Functions3.6.1 How to measure totalized flows (manually)The basic measurement indicated on the

3: Operating Procedures24 3.6.2 How to stop the totalizer temporarilyIf you want to stop the totalizer temporarily for operational reasons, set the

3: Operating Procedures 25Signal calibration4-20mA Signal scalingNote: The 4 to 20 mA output can be set to represent a particular flow range. It is

ITable of Contents1: General Description 11.1 Introduction 11.2 Principles of Operation 21.3 Supplied Hardware 31.4 PUB Instrument 41.4.1 Connec

3: Operating Procedures26 Convert the measured current to flow rateAssume the maximum flow rate is Fmax (gal/min) and the minimum flow rate Fmin is

3: Operating Procedures 27Note: This does not apply if the PULSE OUTPUT menu is accessed by pressing the Pulse key when operating in the FLOW READIN

3: Operating Procedures28 Calibrating the pulse frequency range The Calculated Pulse Value field is automatically calculated as:This value is often

4: Maintenance & Repair 294: Maintenance & RepairThis instrument does not contain any user-serviceable parts. The following notes are prov

5: Troubleshooting30 5: Troubleshooting5.1 OverviewIf you have a problem with your flow monitoring system it can be due to any of the following:Fa

5: Troubleshooting 31Automatic signal loss recoveryIf the signal is lost or the Quality falls below 40%, the set up procedure, which is normally inv

5: Troubleshooting32 5.3 Warning & Status MessagesFLOW RATE ERRORSNo flow signal Interpretation: This message appears when the transducers canno

5: Troubleshooting 334-20mA ERRORSmA out > Max Interpretation: The actual flow is higher than the maximum set on the mA range.Response: Re-scale

5: Troubleshooting34 5.4 Test BlockA test block is included with the PUB equipment to allow the transducers and inter-connecting cables to be functi

5: Troubleshooting 355. Select Sensor mode and position the cursor at Diagonal and press ENTER to return to the SENSOR SELECTION menu.6. Select Exit

II 3.7 Configuring the Current / Pulse Output 243.7.1 Current output 243.7.2 Pulse output 264: Maintenance & Repair 294.1 Warranty / Return

5: Troubleshooting36 Gain Gain values are typically in the range 600 to 850.Switches Typical Switches values are None and *10. On small pipes (and w

6: Specification 376: SpecificationGENERALDSP Measurement Technique: Transit time.Timing Resolution: 50 pico-seconds, continuous signal level indi

6: Specification38 TRANSDUCER SETSStandard transducers: Temperature Range -4°F to +275°F (-20°C to +135°C).'PUB-A' (standard) 0.5 to 4.5 i

6: Specification 39MECHANICALCarrying case:Rating: All components are contained in a hard-wearing polypropylene carrying case with a protective moul

6: Specification40 ©Copyright 2012 Dwyer Instruments, Inc. Printed in USA 9/12DWYER INSTRUMENTS, INC.P.O. BOX 373 • MICHIGAN CITY, INDIANA 46360, US

1: General Description 11: General Description1.1 IntroductionThis manual describes the operation of the Dwyer PUB portable flowmeter. The flowmet

1: General Description2 1.2 Principles of OperationWhen ultrasound is transmitted through a liquid, the speed at which the sound travels through the

1: General Description 31.3 Supplied HardwareThe PUB equipment is supplied in a rugged polypropylene carrying case fitted with a foam insert to give

1: General Description4 1.4 PUB InstrumentThe PUB is a microprocessor controlled instrument operated through a menu system using an inbuilt LCD disp

1: General Description 5Figure 1.4 Keypad1.4.2 KeypadThe instrument is configured and controlled via a 16-key tactile membrane keypad, as shown in