Badger Meter Vortex VN2000 Manual de usuario

VN2000 Flow Meters

Hot Tap Insertion Meter

VRX-UM-02217-EN-04 (June 2018) User Manual

VN2000 Flow Meters, Hot Tap Insertion Meter

VRX-UM-02217-EN-04Page 2 June 2018

User Manual

VRX-UM-02217-EN-04 Page 3June 2018

CONTENTS

Purpose of this Document. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5

Unpacking and Inspection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

Storage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

Safety . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5

Safety Symbol Explanations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5

Safety Precautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

Product Label . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6

Introduction. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7

Principles of Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7

Sensor Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

Calibration Factor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

Installing a VN2000 Meter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

Preinstallation Considerations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

Installation Procedure. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9

Using the Optional Insertion/Extraction Tool . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

Using the Tool to Install a Meter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

Using the Tool to Remove a Meter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

Wiring a Remote Transmitter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

Specications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .16

Parts List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

VNF O-Ring Kit PN VNA-RNG-VNF Contents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

Part Number Conguration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

Metric Pipes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

VN2000 Flow Meters, Hot Tap Insertion Meter

VRX-UM-02217-EN-04Page iv June 2018

Purpose of this Document

Page 5June 2018 VRX-UM-02217-EN-04

PURPOSE OF THIS DOCUMENT

The purpose of this document is to provide you with an overview of the installation and wiring of the VN2000 Hot Tap

Insertion Meter. For information on basic configuration, see the VN2000 Transmitter User Manual supplied with the meter or

download the manual at www.badgermeter.com.

MPORTANTI

Read this manual carefully before attempting any installation or operation.

Keep the manual in an accessible location for future reference.

UNPACKING AND INSPECTION

Upon opening the shipping container, visually inspect the product and applicable accessories for any physical damage such

as scratches, loose or broken parts, or any other sign of damage that may have occurred during shipment.

OTE:NIf damage is found, request an inspection by the carrier’s agent within 48 hours of delivery and file a claim with the

carrier. A claim for equipment damage in transit is the sole responsibility of the purchaser.

Storage

If the meter is not scheduled for installation soon after delivery and must be stored:

• After inspection, re-pack the meter into its original packing.

• If the meter being stored has been previously installed, remove all process fluids and corrosives.

• Store in a clean, dry site free of mechanical vibration, shock and chemical corrosives.

SAFETY

Safety Symbol Explanations

DANGER

INDICATES A HAZARDOUS SITUATION, WHICH, IF NOT AVOIDED IS ESTIMATED TO BE CAPABLE OF CAUSING DEATH OR

SERIOUS PERSONAL INJURY.

INDICATES A HAZARDOUS SITUATION, WHICH, IF NOT AVOIDED COULD RESULT IN SEVERE PERSONAL INJURY

OR DEATH.

INDICATES A HAZARDOUS SITUATION, WHICH, IF NOT AVOIDED IS ESTIMATED TO BE CAPABLE OF CAUSING MINOR OR

MODERATE PERSONAL INJURY OR DAMAGE TO PROPERTY.

Safety Precautions

IF THE EQUIPMENT IS USED IN A MANNER NOT SPECIFIED BY THE MANUFACTURER, THE PROTECTION PROVIDED BY

THE EQUIPMENT MAY BE IMPAIRED.

Product Label

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PRODUCT LABEL

Figure 1: VN2000 meter label

Introduction

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INTRODUCTION

The VN2000 Hot Tap Insertion Vortex Flow Meter measures the volumetric flow rate, mass flow rate or BTU/energy of

steam, gas or liquids over a large flow range. The meter is a heavy duty design engineered to stand up to the most abusive

environments inside and outside the pipe.

Principles of Operation

An everyday example of a vortex shedding phenomenon is a flag waving in the breeze: the flag waves due to the vortices

shed by air moving across the flagpole. Within the flow meter, as flowing fluid moves across the tiny strut or “bluff bar”,

vortices are shed on a smaller scale. The frequency of the vortices shedding is proportional to the fluid velocity.

Through the use of an internal RTD, the flow meter software compensates for changes in temperature, to achieve an accurate

mass flow measurement.

FLOW

Small Strut Shed Vortices

Dual

Piezo-

electric

Sensors

Figure 2: Vortex shedding

Sensor Operation

Two piezoelectric pressure-sensing crystals are mounted internally in the insertion vortex meter in proximity to the

vortex-generating element, called the shedder bar. Two sensors sense the vortex signals. The crystals convert the pressure

pulses created by the vortices into voltage signals without the need of excitation current or voltage. The sensor crystals are

never in contact with the fluid. The piezo crystals are encapsulated in a stainless steel module.

Calibration Factor

The frequency at which vortices are shed is a linear function of fluid velocity, and therefore, a measure of flow. In the range

covered by the particular flowmeter, vortex frequency is insensitive to specific gravity, viscosity, and temperature of the fluid,

and depends only upon the width (d) in inches and shape of the flow element, and the inside diameter (D) of the pipeline

in inches.

The frequency is F = SV/d

Where:

F = Karman vortex frequency

S = constant (Strouhal Number)

V = fluid velocity at the flow element

D = face width of the element

Installing a VN2000 Meter

Page 8 June 2018VRX-UM-02217-EN-04

INSTALLING A VN2000 METER

The Badger Meter VN2000 Insertion Vortex Meter is designed to operate under a wide variety of conditions. To ensure its

longevity of operation, precautions should be taken before and during its installation.

Preinstallation Considerations

Selecting the Installation Site

The meter requires a minimum of 10 straight diameters upstream and 5 straight unobstructed diameters of downstream

piping. One diameter is equal to the internal pipe diameter. This is necessary to ensure regulated formation of vortices.

• Choose a site with minimal mechanical vibrations.

• Do not install the transmitter and cables in close proximity with large transformers, arc-welding equipment, large electric

motors, or similar industrial equipment that emits excessive electromagnetic interference

• Avoid areas of extreme temperature change. The signal conditioner works ideally between temperatures of 32…140° F

(0…60° degrees C ).

• Avoid areas of high humidity or corrosive atmosphere, where possible.

• When installing the meter, choose a site that is accessible and allows ease of wiring and maintenance.

Piping Guidelines

Straight Run Piping Requirements Upstream Pipe Diameters Downstream Pipe Diameters

One 90° elbow before flow meter 10 5

Two 90° elbows before flow meter 15 5

Two 90° elbows out of plane before flow meter 30 5

Reduction before flow meter 10 5

Regulator, valve or header before flow meter 30 5

Tee connection before flow meter 30 5

Table 1: Piping requirements

If the minimum straight run is not possible, install the meter with 80% of the straight run upstream and 20% downstream.

To provide the high accuracy of flow measurement specified on the identification sheet, piping and installation instructions

must be followed carefully.

• The pipe immediately upstream and downstream of the flow meter must be straight, of sufficient length and free of

obstructions. See Table 1 for exact dimensions.

• If recommended piping cannot be found, use straightening vanes on vortex meters.

• Locate any valves downstream of the meter.

• Before installing the meter, make sure nothing (such as weld beads or flange gaskets) protrudes from the internal wall of

the pipe that could interrupt the flow stream and affect the reading.

Temperature Taps

For BTU/Energy Meters: Install temperature transducers in accordance with the manufacturer’s specifications and

2.5…3.5 diameters from the downstream side of the meter body.

Orientation

The VN2000 insertion meter uses dual piezoelectric sensing elements with no moving parts. This eliminates wear and allows

for vertical or horizontal pipe installation. For vertical pipes, the meter can be located in any position.

For horizontal pipe orientations, install the meter above the centerline of the pipe. To prevent condensate from running into

the pipe assembly, mount the flow meter at 0…80° off of the top center of the pipe. For high temperature applications, avoid

mounting the transmitter over the pipe to keep it out of the path of heat rising from the pipe. Insulate all pipes surrounding

the meter.

Installing a VN2000 Meter

Page 9June 2018 VRX-UM-02217-EN-04

Installation Procedure

The hot-tap method involves inserting the flow meter through a full port valve and requires greater clearance space for

removal and installation.

OTE:NFor pipes under pressure, use the Insertion/Extraction Tool. See “Using the Optional Insertion/Extraction Tool” on

page11.

The flow meter is shipped completely assembled, tested and ready to install and operate in its permanent location. These

instructions assume the pipe has been fitted with a 1-1/2 in. hole, a Weldolet®, nipple and valve. The valve must be threaded

full bore.

When the flange version is used, a flange is supplied. This flange has an overall height of 3 in. This must be taken into account

when installing the nipple.

MPORTANTI

There is a sensor mounted on the end of the insertion probe. Do not stand the meter on its end. Be careful not to hit or push this end,

or damage to the sensor may occur.

FLOW

30 in.

(762 mm)

Arrow must point

downstream in

direction of ow.

Large hex nut secures

the bar in place.

Small machined

hex nut tightens

meter into the valve.

Alignment ag

Sensing element

Figure 3: Calculate insertion depth

The probe must be inserted until the shedder bar in the sensing element is at the midpoint of the pipe.

1. Calculate the required insertion depth of the vortex meter by dividing the pipe diameter (H) by 2.

2. Calculate how far the alignment ag at the top of the insertion shaft should be from the outside of the pipe wall, for

proper insertion depth: A = 30 inch – (1/2 * H)

3. Fully retract the probe until the insertion end is within the sealing unit.

4. Hand-tighten the large hex nut to hold the meter shaft in place during installation.

THE NUT IS NOT A SEALING NUT. THE NUT IS ONLY DESIGNED TO HOLD THE BAR IN PLACE DURING PRESSURIZED

APPLICATIONS. DO NOT OVER TIGHTEN THE NUT BECAUSE GALLING WILL OCCUR. TIGHTEN THE NUT BY HAND, THEN

TIGHTEN WITH A 24 IN. WRENCH AFTER THE BAR IS INSERTED TO THE DESIRED INSERTION DEPTH.

Installing a VN2000 Meter

Page 10 June 2018VRX-UM-02217-EN-04

5. Apply plumber’s tape to the threaded ends of the meter shaft.

6. Align the meter to the valve and turn the machined hex of the seal assembly to screw the meter into the valve.

OTE:NWhen screwing the 1-1/2 in. NPT threads into the valve, do not use the large nut on the top of the seal assembly. Use

the machined hex on the seal assembly. The large nut is only used to tighten down on the split ring, which holds the

bar in place, keeping it from being pushed out of the line under pressure. It is not a sealing nut.

7. After the meter is sealed into the valve, slowly open the valve and check for possible leaks between the valve and meter

seal assembly. If there are any leaks, close the valve and retry sealing the valve and meter seal assembly.

8. After the valve is completely opened, you are ready to insert the meter sensing element.

9. Loosen the large hex nut to allow the meter shaft to move.

DO NOT LOOSEN THE NUT UNLESS THE LINE IS DEPRESSURIZED OR A HOT-TAP MECHANISM HAS BEEN INSTALLED

PROPERLY ON THE METER SHAFT.

10. Insert the meter shaft until the distance from the alignment ag at the top of the insertion shaft to the top of the pipe = A.

Check the Alignment

After installing the meter, check for alignment. There is an arrow on the flats on the top of the bar nearest to the electronics,

which should point EXACTLY DOWNSTREAM.

This arrow is aligned with the element and will give proper alignment of the element. If this arrow does not point downstream

after installing the meter, rotate the bar.

1. The ats on the top of the bar next to the electronics will accommodate a 1 in. open-ended wrench. Rotate the bar until

the arrow faces downstream. If the assembly is too tight to rotate the bar, loosen the large nut on the seal assembly. The

bar will not slide out.

2. After aligning the arrow, keep the 1 in. open-ended wrench on the ats on top of the bar. Hold it in place and tighten

down on the larger nut on the seal. This will prevent the bar from turning when completing the nal tightening on the

split-ring nut.

MPORTANTI

For a final check, make certain that the meter has not come loose from its 1-1/2 in. NPT connection and that the split ring nut and

seal assembly are firmly in place.

STAY CLEAR OF THE METER WHEN THE LINE IS BEING PRESSURIZED. THIS IS GOOD SAFETY PROCEDURE FOR THE

INSTALLATION OF ANY EQUIPMENT IN A PRESSURIZED LINE.

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