EI QVT Manual de usuario

Phone:(910) 392‐2490
Fax: (910) 392‐2123
416 Landmark Drive
Wilmington, NC 28412 www.easterninstruments.com
QVT MULTIVARIABLE TRANSMITTER
QVT
INSTALLATION & OPERATION
MANUAL
REV 8/22
REVISION VERSION 1.0.51
ORIGINAL LANGUAGE
Copyright© 2022 Eastern Instrument Laboratories, Inc.
All Rights Reserved.

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Phone:(910) 392‐2490
Fax: (910) 392‐2123
416 Landmark Drive
Wilmington, NC 28412 www.easterninstruments.com
TABLE OF CONTENTS
SAFETY
Safe Operaon................................................................................................................. 3
INTRODUCTION
The QVT Mulvariable Transmier................................................................................ 4
GETTING TO KNOW THE QVT
Exploded View of the QVT Transmier.......................................................................... 5
QVT Transmier Schemac............................................................................................ 6
Close‐Up of the IO Board ‐Wiring Terminals ................................................................. 7
Close‐Up of the Processor Board/LCD Board ................................................................. 7
QUICK START UP GUIDE ........................................................................................................... 8
BOOT SEQUENCE ...................................................................................................................... 9
MECHANICAL INSTALLATION
Mechanical Installaon: Mounng the QVT ................................................................ 10
Tubing the QVT.............................................................................................................. 14
ELECTRICAL INSTALLATION
Accessing the Wiring Connectors of the QVT............................................................... 16
Using the Wiring Connectors ........................................................................................ 17
Wiring the QVT .............................................................................................................. 18
4‐20 mA Loop Power................................................................................................... 19
RTD Temperature Sensor Input .................................................................................. 21
OPTIONS
Purge System (Oponal) ............................................................................................... 23
Using the 3‐Way Valve .................................................................................................. 25
GETTING TO KNOW YOUR LCD SCREEN................................................................................. 26
PROCEDURES
Changing the Ae Number.............................................................................................. 27
Changing the EFS (Electronic Full Scale) ...................................................................... 28
Changing the Units of Measure .................................................................................... 29
Zero DP1 Differenal Pressure Measurement ............................................................. 30
Zero Process Temperature............................................................................................ 32
Revert to Factory Sengs (Factory Restore) ............................................................... 34
QVT SPECIFICATIONS.............................................................................................................. 35
DIMENSIONAL DRAWINGS..................................................................................................... 39

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Phone:(910) 392‐2490
Fax: (910) 392‐2123
416 Landmark Drive
Wilmington, NC 28412 www.easterninstruments.com
PLEASE READ BEFORE OPERATING YOUR NEW MULTIVARIABLE TRANSMITTER
For personal/system safety as well as for opmum performance reasons, please read and
understand this manual before working with the transmier.
Check for damaged parts before operang the transmier. Any damaged part should be
properly repaired or replaced by trained personnel. Do not operate the transmier if any
component does not appear to be funconing correctly. Contact Eastern Instruments for
assistance or for repair components.
Ensure that only trained personnel perform installaon of the transmier.
Ensure that assembly of the transmier to a flange or manifold of some kind is done
properly as improper assembly could lead to damage of the sensors of the transmier or
could render the transmier dangerous. Failure to follow the installaon guidelines with‐
in this manual could cause serious injury or death.
If the transmier is installed in a high‐voltage environment, it is possible that a fault or in‐
stallaon error could cause high voltage to be present on the transmier leads and termi‐
nals. Electrical shock could cause serious injury or death.
Use only replacement components or installaon bolts supplied by Eastern Instruments as
non‐approved components or installaon hardware may render the transmier danger‐
ous and could lead to serious injury or death.
For Technical Assistance, please contact us:
Eastern Instruments
416 Landmark Drive
Wilmington, NC 28412
SAFETY
SAFE OPERATION

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Phone:(910) 392‐2490
Fax: (910) 392‐2123
416 Landmark Drive
Wilmington, NC 28412 www.easterninstruments.com
THE QVT MULTIVARIABLE TRANSMITTER
The QVTTM Mulvariable Transmier from Eastern Instruments is a Smart Transmier that can
be used for the accurate measurement of up to four separate process variables including
Differenal Pressure, Temperature and Absolute Pressure. When coupled with any DP based
flow measurement element, the QVTTM will calculate the fully compensated mass flow of air/
gas travelling through any process which is at or near atmospheric pressure (5 ‐25 psia). The
QVT will accept a Process Temperature signal from an external RTD and will simultaneously
measure the Differenal Pressure and Absolute Pressure from a coupled flow element. The
QVT will be as accurate whether coupled with an Eastern Instruments flow element or wheth‐
er it is coupled with a flow element from the manufacturer of your choosing. Using these in‐
puts, the QVT will calculate a compensated mass flow rate and will give an output proporonal
to this compensated mass flow rate via a 4‐20 mA signal. Please note that the 4‐20 mA signal
can be fully compensated (live measurement of DP, AP and Temperature), parally compen‐
sated (live measurement of DP only) or the values for the Process Variables (DP, AP or Tem‐
perature) can be output via the 4‐20 mA signal as well.
INTRODUCTION

5
Phone:(910) 392‐2490
Fax: (910) 392‐2123
416 Landmark Drive
Wilmington, NC 28412 www.easterninstruments.com
Exploded View of QVT Transmier
GETTING TO KNOW THE QVT

6
Phone:(910) 392‐2490
Fax: (910) 392‐2123
416 Landmark Drive
Wilmington, NC 28412 www.easterninstruments.com
QVT Transmier Schemac ‐Shown with oponal 3‐Valve Manifold and Purge System
3‐Valve Manifold
(Recommended Accessory)

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Phone:(910) 392‐2490
Fax: (910) 392‐2123
416 Landmark Drive
Wilmington, NC 28412 www.easterninstruments.com
Close‐up of the IO Board ‐Wiring Terminals
Close‐up of the Processor Board/LCD Board
The 4‐20 mA Connector The RTD Connector
Board Snap Mounts
Snap Mounng Holes
Snap Mounng Holes

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Phone:(910) 392‐2490
Fax: (910) 392‐2123
416 Landmark Drive
Wilmington, NC 28412 www.easterninstruments.com
VERIFY PROPER MECHANICAL INSTALLATION
Verify that the QVT is properly mounted (See “Mechanical Installaon: Mounng
the QVT” secon of the QVT I&O Manual for Addional Info)
Verify that the High and Low Ports of your flow element are properly tubed to the
transmier/manifold/purge system (See “Tubing the QVT” secon of the QVT I&O
Manual for Addional Info)
VERIFY PROPER WIRING OF THE QVT
Verify that the proper power has been supplied to the QVT (See “Wiring the QVT: 4
‐20 mA Loop Power” secon of the QVT I&O Manual for Addional Info)
If using an RTD to measure the process temperature, verify that the RTD is properly
wired (See “Wiring the QVT: RTD Temperature Sensor Input” secon of the QVT
I&O Manual for Addional Info)
PERFORM ZERO OF THE DP1 DIFFERENTIAL PRESSURE
(See “Procedures: Zero DP1 Differenal Pressure Measurement” secon of the
QVT I&O Manual for Addional Info)
VERIFY COMMUNICATION (4‐20 mA OUTPUT)
Compare the readings on your PLC/DCS with the values of the output variable
shown of the QVT screen. (Example: 0 lb/hr on the QVT would equate to 4 mA of
output)
QUICK START UP GUIDE

9
Phone:(910) 392‐2490
Fax: (910) 392‐2123
416 Landmark Drive
Wilmington, NC 28412 www.easterninstruments.com
Aer powering on the QVT, the transmier will proceed through a boot sequence followed by
an automated scrolling of key values and sengs within the QVT.
BOOT SEQUENCE
AUTO SCROLL SEQUENCE
Manual Scrolling of the displays shown in the Auto Scroll Sequence is possible by pressing the
“PRG” Buon repeatedly unl the desired display is shown. The display will be shown for ap‐
proximately 2 hrs before returning to the Auto Scroll Sequence.
BOOT SEQUENCE
Upon Boot/Reboot the so‐
ware version (le) will be
displayed, followed by a
Pass/Fail screen denong
whether the soware has
loaded properly (right). Up‐
on a successful Boot (Pass),
the Auto Scroll Sequence
(below) will begin.
Upon a successful Boot Se‐
quence (Above), the Auto
Scroll Sequence will begin.
Each value will be shown
sequenally for 1.5 seconds
each. Upon compleon, the
sequence will start over
again automacally.
dP Display
Temperature Display 4-20 mA Full ScaleMass Flow Display
AP Display

10
Phone:(910) 392‐2490
Fax: (910) 392‐2123
416 Landmark Drive
Wilmington, NC 28412 www.easterninstruments.com
MECHANICAL INSTALLATION: MOUNTING THE QVT
The QVT can either be mounted via an oponal mounng bracket which allows the transmier
to be mounted to either a vercal or horizontal 2” pipe, or, if the transmier is purchased with
flow elements from Eastern Instruments, the transmier will be mounted directly to the flow
element (VAP Pitots, DSV Duct Secon or HBP High Beta Flow Condioner). Detailed dimen‐
sional drawings are included within this secon of the manual. The suggested installaon lo‐
caon depends upon the process, but in general, for air and gas flow measurement, the trans‐
mier is suggested to be located above the tap for the air/gas flow measurement so that con‐
densate that may collect in the impulse lines, can drain away from the transmier.
MECHANICAL INSTALLATION
Mount Bracket for QVT: Pipe Mount Mount Bracket for QVT w/ Manifold: Pipe Mount
Mount Bracket for QVT: Panel Mount Mount Bracket for QVT w/ Manifold: Panel Mount
5/16” x 1.75” Bolt For
QVT Mounng
1 1/2” Size U‐Bolt
For Pipe Mounng
1 1/2” Size U‐Bolt
For Pipe Mounng
M8 x 1.25 For Transmier
Manifold Mounng
5/16” x 1.75” Bolt For
QVT Mounng
5/16” x 1.75” Bolt For
Panel Mounng
M8 x 1.25 For Transmier
Manifold Mounng
5/16” x 1.75” Bolt For
Panel Mounng
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