EPI Valumass 400 Series Quick guide

INSTRUCTION MANUAL
Title: VALUMASS SERIES INSTALLATION, WIRING, AND DIMENSIONS
This document is the property of Eldridge Products Inc. and shall not be copied or used without written authorization.
Page 1 of 29
Rev.: A
Document # 90000002
TIME STAMP: THIS IS A CONTROLLED DOCUMENT AS LONG AS NO NEW RELEASED REVISION SUPERSEDES IT.
PRINTED ON THIS DATE: 8/23/2021 AND TIME: 10:19:40 AM.
Valumass™
Thermal Mass Flow Meters
400-440 & 500-540 Series
Installation, Wiring, and Dimensions
www.epiflow.com
Eldridge Products, Inc.
465 Reservation Road
Marina, CA 93933
Tel: [phone] or 831-648-7777
Fax: [phone]
Email: [e-mail] or [e-mail]

INSTRUCTION MANUAL
Title: VALUMASS SERIES INSTALLATION, WIRING, AND DIMENSIONS
This document is the property of Eldridge Products Inc. and shall not be copied or used without written authorization.
Page 2 of 29
Rev.: A
Document # 90000002
TIME STAMP: THIS IS A CONTROLLED DOCUMENT AS LONG AS NO NEW RELEASED REVISION SUPERSEDES IT.
PRINTED ON THIS DATE: 8/23/2021 AND TIME: 10:19:40 AM.
Applicable Models: Series 400-440
Series 500-540
Approvals
CE Approved Instrument
400 & 440 Series Flow Transmitter: Manufacturer rated as Type 4X, IP66
500 & 540 Series Flow Transmitter: Manufacturer rated as flame proof Ex, Type 4X, IP66
Table of Contents
APPLICABLE MODELS:........................................................................................................... 2
APPROVALS................................................................................................................................ 2
TABLE OF CONTENTS ............................................................................................................ 2
INTRODUCTION, POWER REQUIREMENTS, AND SIGNAL INTERFACE.............................. 4
INTRODUCTION ............................................................................................................................ 4
UNPACKING YOUR INSTRUMENT................................................................................................... 4
POWER REQUIREMENTS............................................................................................................... 4
SIGNAL INTERFACE...................................................................................................................... 5
GENERAL INSTALLATION AND GUIDELINES....................................................................... 6
STRAIGHT RUN REQUIREMENTS ................................................................................................... 7
INSTALLATION OF INLINE FLOW METERS....................................................................................... 8
INSTALLATION OF INSERTION FLOW METERS................................................................................. 9
INSERTION DEPTH GUIDELINES....................................................................................................10
WIRING DIAGRAMS................................................................................................................11

INSTRUCTION MANUAL
Title: VALUMASS SERIES INSTALLATION, WIRING, AND DIMENSIONS
This document is the property of Eldridge Products Inc. and shall not be copied or used without written authorization.
Page 3 of 29
Rev.: A
Document # 90000002
TIME STAMP: THIS IS A CONTROLLED DOCUMENT AS LONG AS NO NEW RELEASED REVISION SUPERSEDES IT.
PRINTED ON THIS DATE: 8/23/2021 AND TIME: 10:19:40 AM.
400 &440 SERIES......................................................................................................................11
500 &540 SERIES......................................................................................................................12
AC TRANSFORMER.....................................................................................................................13
FREQUENCY OUTPUT (400 &440 SERIES)...................................................................................14
FREQUENCY OUTPUT (500 &540 SERIES)...................................................................................15
DIMENSIONAL DIAGRAMS.....................................................................................................16
400 SERIES (INTEGRAL)..............................................................................................................16
400 SERIES (REMOTE ELECTRONICS OR 115/230VAC)................................................................17
440 SERIES (INTEGRAL)..............................................................................................................18
440 SERIES (REMOTE ELECTRONICS OR 115/230VAC)................................................................19
500 SERIES (INTEGRAL)..............................................................................................................20
500 SERIES (REMOTE ELECTRONICS)..........................................................................................21
540 SERIES (INTEGRAL)..............................................................................................................22
540 SERIES (REMOTE ELECTRONICS)..........................................................................................23
FACTORY CALIBRATION.......................................................................................................24
GENERAL SPECIFICATIONS AND INFORMATION...............................................................25
400 &440 SERIES SPECIFICATIONS ............................................................................................25
500 &540 SERIES SPECIFICATIONS ............................................................................................26
SPECIFICATION NOTICE...............................................................................................................27
TERMS AND CONDITIONS.............................................................................................................27
APPROVALS...............................................................................................................................27
LIMITED WARRANTY ...................................................................................................................27
LIMITED ACCEPTANCE ................................................................................................................27
SERVICE WORK..........................................................................................................................28
STORAGE...................................................................................................................................28
EPITERM SOFTWARE .................................................................................................................28
EPITERM INTERFACE USER MANUAL...........................................................................................28
CUSTOMER SATISFACTION SURVEY.............................................................................................28
EU DECLARATION OF CONFORMITY ...................................................................................29

INSTRUCTION MANUAL
Title: VALUMASS SERIES INSTALLATION, WIRING, AND DIMENSIONS
This document is the property of Eldridge Products Inc. and shall not be copied or used without written authorization.
Page 4 of 29
Rev.: A
Document # 90000002
TIME STAMP: THIS IS A CONTROLLED DOCUMENT AS LONG AS NO NEW RELEASED REVISION SUPERSEDES IT.
PRINTED ON THIS DATE: 8/23/2021 AND TIME: 10:19:40 AM.
Introduction, Power Requirements, and Signal Interface
Introduction
Your Valumass™ flow meter includes a flow sensing element, temperature sensing element,
digital SIM/Base board, digital controller board and a transmitter enclosure. The flow sensor is
mounted in an insertion probe support or an inline flow section. Depending upon your
requirements, all these components may be integrated into one flow transmitter assembly or
you may have a flow transmitter and a second, remote electronics enclosure. In either
configuration, the digital controller converts the nonlinear input signal received from the flow
sensor to linear 0–5/10 VDC & 4–20 mA output signals. RS485 Modbus RTU communications
are embedded in the firmware as standard, with optional BACnet communications available.
Unpacking Your Instrument
Although your Valumass™ thermal mass flow meter instruments are rugged, they should be
inspected upon delivery to assure that no damage has taken place during transit. If upon
inspection it is found that damage has occurred, notify the carrier immediately and place a claim
for damaged goods. The shipping container or crate should be handled with care and carefully
opened to avoid possible damage to the contents. After the container is opened the contents
should be carefully removed and the individual pieces checked against the packing list. Please
note that the packing list will show all the options that were ordered for your instrument. Most of
these options will be incorporated into the flow meter itself and will not be separate components.
The last verification is to check that the equipment and calibration range as shown on the
documentation match your purchase order specifications. If you discover a discrepancy or have
any questions about what you have received, contact EPI immediately.
Power Requirements
Power requirements for Valumass™ flow meters with the “-DC24” option is user-supplied 18 to
24 Volts DC @ 250 mA.
Power requirements for Valumass™ flow meters with the “-AC115” option is 100 - 120 VAC
50/60 Hz standard.
Power requirements for Valumass™ flow meters with the “-AC230” option is 210 - 240 VAC
50/60 Hz Standard.
Our recommendation on wire size is 18 Ga. stranded for all AC wiring. If conduit is used to
enclose the power input line, it should be suitable for the application, electrically conductive, and
connected within the enclosure to the earth ground. If the flow meter includes a remote
electronics assembly, then the flow transmitter power is provided by the connection to the
remote assembly. Ten feet of five-wire connection cable is provided with the standard remote
assembly. If more cable is required, please inform your EPI sales representative at the time of
order. The transmitter is independent of cable length and will not suffer any signal degradation
with length changes. The 4–20mA analog output wire should be sized for no more than 5 Ohms
resistance across the loop and not less than 22 AWG.

INSTRUCTION MANUAL
Title: VALUMASS SERIES INSTALLATION, WIRING, AND DIMENSIONS
This document is the property of Eldridge Products Inc. and shall not be copied or used without written authorization.
Page 5 of 29
Rev.: A
Document # 90000002
TIME STAMP: THIS IS A CONTROLLED DOCUMENT AS LONG AS NO NEW RELEASED REVISION SUPERSEDES IT.
PRINTED ON THIS DATE: 8/23/2021 AND TIME: 10:19:40 AM.
Signal Interface
All Valumass™ flow meters provide both 0–5/10 Volts DC and 4–20 mA flow and temperature
analog output signals as well as RS485 Modbus RTU communications, with optional BACnet
communications available. Voltage signals should not be sent over long distances due to small
currents causing voltage drops across the wire pair. If the voltage is to be sent over a distance
(i.e., 50 feet), the wire AWG should be sized to reduce the voltage drop to acceptable levels.
Knowing your load impedance is the only way this calculation may be achieved. Our 4–20 mA
signal is provided to prevent this sort of signal loss. Current loops are normally not susceptible
to noise and are not affected by voltage drops around the loop. However, it is important when
using a current loop not to exceed the level of load resistance that the current loop may drive.
Examples:
DC Voltage
Input
Coefficient
Resistance Loop
Ohms Max.
*24 VDC Powered EPI Flowmeter Power
Input Supply:
24
x
32.708
=
785
115/230 VAC Powered EPI Flowmeter
Power Input Supply:
20
x
32.708
=
654
Isolated - Customer Powered 4-20 mA
Current Loop:
24
x
34.167
=
820
*Isolated - Customer Powered 4-20 mA
Current Loop:
20
x
34.167
=
683
*Same formula applies for less than 24 VDC input, substitute lesser value in equation.
In our standard configuration, our flow meters 4-20 mA output signal is not
loop-powered. However, this option is available upon request. If a flow meter
must be changed from the standard configuration to loop-powered in the field,
contact the factory for assistance. The loop power is only for the output signal
and does not provide power to the rest of the electronics.
ValuMass™ Series flowmeters also have the option to provide a 0 –1 kHz frequency output
proportional to the calibrated flow rate. The signal is both Sink and Source capable. The
following specifications apply when this option is ordered:
Sinking
(User provides power input)
40 VDC max.
200mA max.
Sourcing
(ValuMass™ provides power input)
15 VDC 50mA max.
300-ohm min.
Frequency Output Formula:
Frequency Span x (Actual Flow Rate / Full Scale) = Frequency Output

INSTRUCTION MANUAL
Title: VALUMASS SERIES INSTALLATION, WIRING, AND DIMENSIONS
This document is the property of Eldridge Products Inc. and shall not be copied or used without written authorization.
Page 6 of 29
Rev.: A
Document # 90000002
TIME STAMP: THIS IS A CONTROLLED DOCUMENT AS LONG AS NO NEW RELEASED REVISION SUPERSEDES IT.
PRINTED ON THIS DATE: 8/23/2021 AND TIME: 10:19:40 AM.
General Installation and Guidelines
The Valumass™ thermal dispersion sensor must be exposed to the flowing gas within the
process pipe at a location that provides a uniform and consistent flow profile across the pipe
diameter. Anomalies in the actual flow profile or installations in non-circular ducts may require
adjustments for the best accuracy. Although changes to the process gas composition, gas
temperature, line pressure, etc. can affect the overall accuracy of the flow readings, these
effects are often minimal when compared to their effect on other flow measurement
technologies.
The temperature parameters for the transmitter are listed in the specification section of this
manual. Acceptable limits for the gas temperature and the environmental temperature limits to
which the transmitter electronics may be subjected are also provided.
We recommend installing the flow meter at a location where the gas is dry or above the dew
point temperature. Installations which allow large droplets of water to condense and contact the
sensing element must be avoided. Applications with large quantities of gas-borne particulates
should also be avoided as the sensor may become dirty which could affect the heat loss to the
flowing gas and therefore have a negative impact on the overall accuracy of the flow readings.
Optimum installation requires sufficient straight run to allow a uniform, non-swirling, fully
developed flow profile within the flow conduit. The illustration on the next page is provided
as a general guideline for minimum straight run requirements. Depending upon the specific
location details, straight run requirements to produce a satisfactory flow profile may vary. It is
best to avoid installations which are immediately downstream of bends, abrupt cross-sectional
area increases or decreases, fans, louvers, or other equipment installed in the line. These
situations can cause non-uniform flow profiles and swirl which can result in signal errors.
Problematic flow profiles require flow conditioning to improve meter performance.
Our inline style flow meters are calibrated with the sensors in a fixed position within the provided
flow section. Our insertion flow meters are calibrated near the ANSI Point-of-Average-Flow
(.243r) positioning in the process line with a fully developed flow profile. You may need to make
minor adjustments in the sensor position for best results in your process line. With either style of
flow meter, you may also need to utilize the Valumass™ software using flow signal adjustments
for the most accurate flow readings due to a non-uniform flow profile in your process line.
The Valumass™ firmware supports two methods of flow signal adjustments for superior
accuracy: C-Factor, or Point-Wise adjustments for the most accurate flow readings:
Please see the EPICom Live User Manual for complete description of
these menus and their functions or consult the factory for additional
information.

INSTRUCTION MANUAL
Title: VALUMASS SERIES INSTALLATION, WIRING, AND DIMENSIONS
This document is the property of Eldridge Products Inc. and shall not be copied or used without written authorization.
Page 7 of 29
Rev.: A
Document # 90000002
TIME STAMP: THIS IS A CONTROLLED DOCUMENT AS LONG AS NO NEW RELEASED REVISION SUPERSEDES IT.
PRINTED ON THIS DATE: 8/23/2021 AND TIME: 10:19:40 AM.
Straight Run Requirements
General Guideline for Minimum Straight Run Requirements
Note:
10x within the illustration represents 10
ID lengths and 15x represents 15 ID
lengths and so forth.
Some of EPI inline flow meters come
with flow conditioning plates that can
assist with shorter upstream conditions.
Consult the factory for additional
information concerning options to
reduce the required straight run.

INSTRUCTION MANUAL
Title: VALUMASS SERIES INSTALLATION, WIRING, AND DIMENSIONS
This document is the property of Eldridge Products Inc. and shall not be copied or used without written authorization.
Page 8 of 29
Rev.: A
Document # 90000002
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PRINTED ON THIS DATE: 8/23/2021 AND TIME: 10:19:40 AM.
Installation of Inline Flow Meters
The inline style flow meter assembly includes the flow sensing element, temperature sensing
element, digital SIM/Base board, digital controller board, transmitter enclosure, and flow section.
Depending on the flow section size and/or other requirements, the flow section may include a
nozzle or flow conditioning plates. The flow section is typically specified to match the user’s flow
conduit and is plumbed directly in the flow line. Inline mounting styles are available through EPI
for line sizes 1/4" pipe and larger. Consult our factory for flow section end mounting options.
Inline flow meters are calibrated with the flow sensing element mounted in place within the flow
section. The sensor should not be removed as the accuracy of the flow signal will be affected.
Should ever it become necessary to remove the sensing element for any reason, the element
should be replaced in the same alignment as it was originally positioned. Please consult the
factory before disassembling.
Inline flow meters will have the flow direction marked on their flow section for a visual reference
during installation.
Available end connection styles

INSTRUCTION MANUAL
Title: VALUMASS SERIES INSTALLATION, WIRING, AND DIMENSIONS
This document is the property of Eldridge Products Inc. and shall not be copied or used without written authorization.
Page 9 of 29
Rev.: A
Document # 90000002
TIME STAMP: THIS IS A CONTROLLED DOCUMENT AS LONG AS NO NEW RELEASED REVISION SUPERSEDES IT.
PRINTED ON THIS DATE: 8/23/2021 AND TIME: 10:19:40 AM.
Installation of Insertion Flow Meters
The insertion style flow meters include the flow sensing element, temperature sensing element,
digital SIM/Base board, digital controller board, transmitter enclosure, and the probe assembly
which supports the sensing elements. This design requires the probe assembly to be inserted
into the process gas flow conduit.
Insertion models are available with a ½” O. D. Probe. Insertion style flow meters may be
installed with properly sized bored-through tube fittings to mount them in place. Tube fittings,
with or without mounting flange, are available from the factory as an option. Installing the tube
fitting consists of preparing the flow conduit to accept the fitting by first drilling a clearance hole
for the transmitter probe assembly, welding it in place, or threading it into the proper size half
coupling which has been welded to the flow conduit. The tube length will be determined by EPI
based upon the installation specifications.
Optional ball valve assemblies are available through EPI which allow the removal of the
insertion style flow meters for service, calibration, cleaning, etc. The valve provides a means to
seal off leaks of the process gas at the point of insertion after the probe assembly has been
removed. The ball valve assembly installation requires fitting the flow section to which the
insertion probe assembly will be inserted with a threaded half coupling of the proper size to
accommodate the ball valve retractor. In some instances, this requires direct threading together
(or with a reducing bushing) of the retractor assembly. In other cases, it requires welding the
half coupling in place and drilling a clearance hole through for the probe assembly. If the flow
section is under pressure, a hot tap drill rig (not available through EPI) may be required.
The maximum pressure for insertion style flow meters is stated in the General Specifications
section of this manual. To reduce the possibility of personal injury when servicing the flow
meter, each size is rated such that the maximum force applied to the transmitter is
approximately 25 pounds. Caution should be exercised if applying higher pressure and a
holding device may be required to prevent the transmitter from being projected out of the
process line when removing or replacing the transmitter assembly.
Visual representation of installation at the recommended insertion depth

INSTRUCTION MANUAL
Title: VALUMASS SERIES INSTALLATION, WIRING, AND DIMENSIONS
This document is the property of Eldridge Products Inc. and shall not be copied or used without written authorization.
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Rev.: A
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PRINTED ON THIS DATE: 8/23/2021 AND TIME: 10:19:40 AM.
Insertion Depth Guidelines
*The information below assumes a well-developed flow profile in the process line
*For other pipe sizes: please use the insertion depth with the nearest inside diameter
associated with your process pipe, or contact the EPI Service department
Final Equation: Depth + Fitting Height = Total Depth from top of fitting to probe end.
EXAMPLE WITH 4”SCH40 PIPE USING A 1.8” TALL (INSTALLED HEIGHT)COMPRESSION FITTING:
Depth for 4” Sch40 pipe from chart: 1.7”
1.7” (depth) + 1.8” (fitting height) = 3.5” (total depth from top of fitting to probe end)

INSTRUCTION MANUAL
Title: VALUMASS SERIES INSTALLATION, WIRING, AND DIMENSIONS
This document is the property of Eldridge Products Inc. and shall not be copied or used without written authorization.
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Rev.: A
Document # 90000002
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PRINTED ON THIS DATE: 8/23/2021 AND TIME: 10:19:40 AM.
Wiring Diagrams
400 & 440 Series

INSTRUCTION MANUAL
Title: VALUMASS SERIES INSTALLATION, WIRING, AND DIMENSIONS
This document is the property of Eldridge Products Inc. and shall not be copied or used without written authorization.
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PRINTED ON THIS DATE: 8/23/2021 AND TIME: 10:19:40 AM.
500 & 540 Series

INSTRUCTION MANUAL
Title: VALUMASS SERIES INSTALLATION, WIRING, AND DIMENSIONS
This document is the property of Eldridge Products Inc. and shall not be copied or used without written authorization.
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AC Transformer

INSTRUCTION MANUAL
Title: VALUMASS SERIES INSTALLATION, WIRING, AND DIMENSIONS
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PRINTED ON THIS DATE: 8/23/2021 AND TIME: 10:19:40 AM.
Frequency Output (400 & 440 Series)

INSTRUCTION MANUAL
Title: VALUMASS SERIES INSTALLATION, WIRING, AND DIMENSIONS
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PRINTED ON THIS DATE: 8/23/2021 AND TIME: 10:19:40 AM.
Frequency Output (500 & 540 Series)

INSTRUCTION MANUAL
Title: VALUMASS SERIES INSTALLATION, WIRING, AND DIMENSIONS
This document is the property of Eldridge Products Inc. and shall not be copied or used without written authorization.
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Dimensional Diagrams
400 Series (Integral)

INSTRUCTION MANUAL
Title: VALUMASS SERIES INSTALLATION, WIRING, AND DIMENSIONS
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400 Series (Remote Electronics or 115/230VAC)

INSTRUCTION MANUAL
Title: VALUMASS SERIES INSTALLATION, WIRING, AND DIMENSIONS
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440 Series (Integral)

INSTRUCTION MANUAL
Title: VALUMASS SERIES INSTALLATION, WIRING, AND DIMENSIONS
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440 Series (Remote Electronics or 115/230VAC)

INSTRUCTION MANUAL
Title: VALUMASS SERIES INSTALLATION, WIRING, AND DIMENSIONS
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500 Series (Integral)