Page 1
Series 24-HP Instruction Manual Table of Contents
Sierra Series 240 and 241
Innova-Mass™ Multi-Parameter
Vortex Mass Flow Meters
Models 240-VT, 240-VTP, 241-VT, 241-VTP
Instruction Manual
Part Number: IM-24-HP, Rev. C.2 10/08
CORPORATE HEADQUARTERS
5 Harris Court, Building L Monterey, CA 93940
Phone (831) 373-0200 (800) 866-0200 Fax (831) 373-4402
www.sierrainstruments.com
EUROPE HEADQUARTERS
Bijlmansweid 2 1934RE Egmond aan den Hoef The Netherlands
Phone +31 72 5071400 Fax +31 72 5071401
ASIA HEADQUARTERS
Room 618, Tomson Centre, Bldg. A
188 Zhang Yang Road
Pu Dong New District, Shanghai, P.R. China
Phone: + 8621 5879 8522 Fax: +8621 5879 8586
IM-24-HP 0-1
Page 2
Table of Contents Series 24-HP Instruction Manual
Customer Notice
Unless you have specifically ordered Sierra’s optional O2 cleaning, this flow meter
may not be fit for oxygen service. Sierra Instruments, Inc., is not liable for any
damage or personal injury, whatsoever, resulting from the use of Sierra Instruments standard mass flow meters for oxygen gas. You are responsible for cleaning the mass flow meter to the degree required for your oxygen flow application.
© COPYRIGHT SIERRA INSTRUMENTS 1997
No part of this publication may be copied or distributed, transmitted, transcribed, stored in
a retrieval system, or translated into any human or computer language, in any form or by
any means, electronic, mechanical, manual, or otherwise, or disclosed to third parties
without the express written permission of Sierra Instruments. The information contained in
this manual is subject to change without notice.
TRADEMARKS
Innova-Mass™ is a trademark of Sierra Instruments, Inc. Other product and company
names listed in this manual are trademarks or trade names of their respective manufacturers.
0-2 IM-24-HP
Page 3
Series 24-HP Instruction Manual Table of Contents
Table of Contents
Chapter 1 Introduction
Innova-Mass™ Vortex Mass Flow Meters .......................................... 1-1
Using this Manual ......................................................................... 1-1
Note and Safety Information ......................................................... 1-2
Receipt of System Components .................................................... 1-2
Technical Assistance ..................................................................... 1-2
How the Innova-Mass Vortex Meter Operates .................................... 1-3
Velocity Measurement/Pressure Drop ........................................... 1-3
Temperature Measurement ............................................................ 1-6
Pressure Measurement ................................................................... 1-7
Flow Meter Configurations .................................................................. 1-7
Chapter 2 Installation
Installation Overview ........................................................................... 2-1
Flow Meter Installation Requirements .......................................... 2-1
Unobstructed Flow Requirements ................................................. 2-2
Series 240 In-Line Flow Meter Installation ......................................... 2-3
Wafer-Style Flow Meter Installation ............................................. 2-4
Flange-Style Flow Meter Installation ............................................ 2-5
Series 241 Insertion Flow Meter Installation ....................................... 2-6
Cold Tap Guidelines...................................................................... 2-7
Hot Tap Guidelines ....................................................................... 2-8
Flow Meter Insertion ........................................................................... 2-9
Installing Meters with a Compression Connection ..................... 2-10
Installing Meters with a Packing Gland Connection ................... 2-12
Installing Meters (Packing Gland), No Insertion Tool ................ 2-15
Adjusting Meter Orientation .............................................................. 2-17
Display/Keypad Adjustment ....................................................... 2-17
Enclosure Adjustment ................................................................. 2-18
Wiring Connections ........................................................................... 2-19
Input Power Connections ............................................................ 2-19
4-20 mA Output Connections ..................................................... 2-20
Pulse Output Connections ........................................................... 2-21
Alarm Output Connections .......................................................... 2-22
Remote Electronics Wiring ......................................................... 2-24
Optional Input Electronics Wiring .............................................. 2-25
Chapter 3 Operating Instructions
Flow Meter Display/Keypad ................................................................ 3-1
Start Up ................................................................................................ 3-2
Using the Setup Menus ........................................................................ 3-3
Programming the Flow Meter ....................................................... 3-3
Output Menu ................................................................................. 3-4
Display Menu ................................................................................ 3-6
Alarms Menu ................................................................................. 3-7
Totalizer Menu .............................................................................. 3-8
IM-24-HP 0-3
Page 4
Table of Contents Series 24-HP Instruction Manual
Energy Menu ....................................................................... 3-10
Fluid Menu .................................................................................. 3-11
Units Menu .................................................................................. 3-12
Time and Date Menu ................................................................... 3-13
Diagnostics Menu ........................................................................ 3-14
Calibration Menu ......................................................................... 3-15
Password Menu ........................................................................... 3-16
Chapter 4 Troubleshooting and Repair
Hidden Diagnostics Menus .................................................................. 4-1
Column One Hidden Diagnostics Values ...................................... 4-2
Column Two Hidden Diagnostics Values ..................................... 4-3
Analog Output Calibration .................................................................. 4-5
Troubleshooting the Flow Meter ......................................................... 4-6
Symptom: Output at no Flow ........................................................ 4-6
Symptom: Erratic Output .............................................................. 4-6
Symptom: No Output .................................................................... 4-7
Symptom: Meter Displays Temperature Fault .............................. 4-7
Symptom: Meter Displays Pressure Fault ..................................... 4-8
Electronics Assembly Replacement ..................................................... 4-9
Pressure Sensor Replacement (Series 240 Only) ................................ 4-9
Returning Equipment to the Factory .................................................. 4-10
Appendix A Product Specifications
Appendix B Glossary
Appendix C Fluid Calculations
Appendix D HART Communication
Appendix E Modbus Communication
Appendix F
ATEX-IECEx Specifications
Certificate of Conformance
0-4 IM-24-HP
Page 5
Series 24-HP Instruction Manual Table of Contents
Figures
1-1. In-Line Vortex Multi-Parameter Mass Flow Meter ................ 1-3
1-2. Measurement Principle of Vortex Flow Meters ...................... 1-4
1-3. Reynolds Number Range of the Innova-Mass ........................ 1-6
2-1. Recommended Pipe Length Required for Installation ............ 2-2
2-2. Flange Bolt Torquing Sequence ............................................. 2-3
2-3. Wafer-Style Flow Meter Installation ...................................... 2-4
2-4. Flange-Style Flow Meter Installation ..................................... 2-5
2-5. Hot Tap Sequence ................................................................... 2-8
2-6. Insertion Calculation (Compression Type) ........................... 2-10
2-7. Flow Meter with Compression Type Fitting ......................... 2-11
2-8. Insertion Calculation (Meters with Insertion Tool) .............. 2-12
2-9. Flow Meter with Permanent Insertion Tool .......................... 2-13
2-10. Flow Meter with Removable Insertion Tool ......................... 2-14
2-11. Insertion Calculation (Meters without Insertion Tool) ......... 2-15
2-12. Display/Keypad Viewing Adjustment .................................. 2-17
2-13. Enclosure Viewing Adjustment ............................................ 2-18
2-14. AC Power Connections ......................................................... 2-19
2-15. DC Power Connections ......................................................... 2-19
2-16. Load Resistance Versus Input Voltage ................................. 2-20
2-17. Isolated 4-20 Output with External Power Supply ............... 2-20
2-18. Non-Isolated 4-20 Output using Input Power Supply .......... 2-21
2-19. Isolated 4-20 Output using Meter Power Supply (AC only) 2-21
2-20. Isolated Pulse Output using External Power Supply ............ 2-22
2-21. Non-Isolated Pulse Output using Input Power Supply ......... 2-22
2-22. Isolated Pulse Output using Meter Power Supply (AC only) 2-22
2-23. Isolated Alarm Output using External Power Supply ........... 2-23
2-24 Non-Isolated Alarm Output using Meter Power Supply....... 2-23
2-25 Isolated Alarm Output using Meter Power Supply(AC only) 2-24
2-26 Remote Electronics Junction Box Sensor Wiring ................. 2-24
3-1. Flow Meter Display/Keypad ................................................... 3-1
Tables
2-1. Minimum Recommended Stud Bolt Lengths ......................... 2-3
IM-24-HP 0-5
Page 6
Table of Contents Series 24-HP Instruction Manual
Warnings and Cautions
Warning!
Agency approval for hazardous location installations varies between flow meter models.
Consult the flow meter nameplate for specific flow meter approvals before any hazardous
location installation.
Hot tapping must be performed by a trained professional. U.S. regulations often require a
hot tap permit. The manufacturer of the hot tap equipment and/or the contractor performing the hot tap is responsible for providing proof of such a permit.
All flow meter connections, isolation valves and fittings for cold/hot tapping must have the
same or higher pressure rating as the main pipeline.
For Series 241 insertion flow meter installations, an insertion tool must be used for any
installation where a flow meter is inserted under pressure greater than 50 psig.
To avoid serious injury, DO NOT loosen a compression fitting under pressure.
To avoid potential electric shock, follow National Electric Code or your local code when
wiring this unit to a power source. Failure to do so could result in injury or death. All AC
power connections must be in accordance with published CE directives. All wiring procedures must be performed with the power Off.
Before attempting any flow meter repair, verify that the line is not pressurized. Always
remove main power before disassembling any part of the mass flow meter.
Caution!
Calibration must be performed by qualified personnel. Sierra Instruments, Inc., strongly recommends that you return your flow meter to the factory for calibration.
In order to achieve accurate and repeatable performance, the flow meter must be installed with the specified minimum length of straight pipe upstream and downstream of
the flow meter’s sensor head.
When using toxic or corrosive gases, purge the line with inert gas for a minimum of four
hours at full gas flow before installing the flow meter.
For Series 241 insertion flow meter installations, the sensor alignment pointer must point
downstream in the direction of flow.
The AC wire insulation temperature rating must meet or exceed 85°C (185°F).
0-6 IM-24-HP
Page 7
Series 24-HP Instruction Manual Chapter 1 Introduction
Chapter 1 Introduction
Innova-Mass™ Multi-Parameter Vortex Mass Flow Meters
The Sierra Instruments’ Series 240 In-Line and the Series 241 Insertion
Innova-Mass™ Vortex Flow Meters provide a reliable solution for
process flow measurement. From a single entry point in the pipeline, Innova-Mass meters offer precise measurements of five parameters including mass flow, volumetric flow, temperature, pressure and fluid density.
The unique Innova-Mass design reduces fugitive emissions, wiring, startup time and work-force requirements.
Innova-Mass digital electronics allows reconfiguration for most gases,
liquids and steam with generous rangeability. The meter outputs a pulse
signal for remote totalization and up to three 4-20 mA analog signals for
monitoring your choice of the five process variables. The local keypad/display provides instantaneous flow rate, total flow, temperature,
pressure and density in engineering units.
The Sierra Series 240 and 241 Innova-Mass Meters’ simple installation
combines with an easy-to-use interface that provides quick set up, long
term reliability and accurate mass flow measurement over a wide range
of flows, pressures and temperatures.
Using This Manual
This manual provides information needed to install and operate both the
Series 240 In-Line and Series 241 Insertion Innova-Mass Flow Meters.
The four chapters of this manual cover these areas:
• Chapter 1 includes the introduction and product description
• Chapter 2 provides information needed for installation
• Chapter 3 describes system operation and programming
• Chapter 4 covers troubleshooting and repair
The product specifications are found in Appendix A. Appendix B contains a glossary of terms. Appendix C provides reference fluid calculations. Appendix D provides wiring and configuration information for the
Energy meter option.
IM-24-HP 1-1
Page 8
Chapter 1 Introduction Series 24-HP Instruction Manual
Note and Safety Information
We use note, caution and warning statements throughout this book to
draw your attention to important information.
Warning!
This statement appears with
information that is important to
protect people and equipment
from damage. Pay very close
attention to all warnings that
apply to your application.
Caution!
This statement appears with
information that is important
for protecting your equipment
and performance. Read and
follow all cautions that apply
to your application.
Receipt of System Components
When receiving a Sierra mass flow meter, carefully check the outside
packing carton for damage incurred in shipment. If the carton is damaged, notify the local carrier and submit a report to the factory or distributor. Remove the packing slip and check that all ordered components are
present. Make sure any spare parts or accessories are not discarded with
the packing material. Do not return any equipment to the factory without
first contacting Sierra Customer Service.
Technical Assistance
If you encounter a problem with your flow meter, review the configuration information for each step of the installation, operation and set up procedures. Verify that your settings and adjustments are consistent with factory recommendations. Refer to Chapter 4, Troubleshooting, for specific
information and recommendations.
If the problem persists after following the troubleshooting procedures
outlined in Chapter 4, contact Sierra Instruments, Technical Support at
(888) 386-7835 or (303) 682-9999 between 8:00 a.m. and 5:00 p.m.
MST. When calling Technical Support, have the following information
on hand:
• the flow range, serial number and Sierra order number (all
marked on the meter nameplate)
• the problem you are encountering and any corrective action
taken
• application information (gas, pressure, temperature and pip-
ing configuration)
Note
This statement appears with a
short message to alert you to
an important detail.
1-2 IM-24-HP
Page 9
Series 24-HP Instruction Manual Chapter 1 Introduction
How the Innova-Mass Vortex Mass Flow Meter Operates
Figure 1-1. In-Line Vortex Multi-Parameter Mass Flow Meter
Sierra Series 240 and 241 Innova-Mass™ Multi-Parameter Vortex Mass
Flow Meters use a unique sensor head to monitor mass flow rate by directly measuring three variables–fluid velocity, temperature and pressure.
The built-in flow computer calculates the mass flow rate and volumetric
flow rate based on these three direct measurements. The velocity, temperature and pressure sensing head is built into the vortex meter’s flow
body. To measure fluid velocity, the flow meter incorporates a bluff
body (shedder bar) in the flow stream and measures the frequency of vortices created by the shedder bar. Temperature is measured using a platinum resistance temperature detector (PRTD). Pressure measurement is
achieved using a solid-state pressure transducer. All three elements are
combined into an integrated sensor head assembly located downstream of
the shedder bar within the flow body.
Velocity Measurement
The Innova-Mass vortex velocity sensor is a patented mechanical design
that minimizes the effects of pipeline vibration and pump noise, both of
which are common error sources in flow measurement with vortex flow
meters. The velocity measurement is based on the well-known Von Karman vortex shedding phenomenon. Vortices are shed from a shedder bar,
and the vortex velocity sensor located downstream of the shedder bar
senses the passage of these vortices. This method of velocity measurement
has many advantages including inherent linearity, high turndown, reliability and simplicity.
IM-24-HP 1-3
Page 10
Chapter 1 Introduction Series 24-HP Instruction Manual
Vortex Shedding Frequency
Von Karman vortices form downstream of a shedder bar into two distinct
wakes. The vortices of one wake rotate clockwise while those of the other wake rotate counterclockwise. Vortices generate one at a time, alternating from the left side to the right side of the shedder bar. Vortices interact with their surrounding space by over-powering every other nearby
swirl on the verge of development. Close to the shedder bar, the distance
(or wave length) between vortices is always constant and measurable.
Therefore, the volume encompassed by each vortex remains constant, as
shown below. By sensing the number of vortices passing by the velocity
sensor, the Innova-Mass™ Flow Meter computes the total fluid volume.
Velocity sensor
Vortex shedder bar
Flow
Constant
wave length
Vortices
Figure 1-2. Measurement Principle of Vortex Flow Meters
Vortex Frequency Sensing
The velocity sensor incorporates a piezoelectric element that senses the
vortex frequency. This element detects the alternating lift forces produced by the Von Karman vortices flowing downstream of the vortex
shedder bar. The alternating electric charge generated by the piezoelectric element is processed by the transmitter’s electronic circuit to obtain
the vortex shedding frequency. The piezoelectric element is highly sensitive and operates over a wide range of flows, pressures and temperatures.
1-4 IM-24-HP
Page 11
Series 24-HP Instruction Manual Chapter 1 Introduction
Flow Velocity Range
To ensure trouble-free operation, vortex flow meters must be correctly
sized so that the flow velocity range through the meter lies within the
measurable velocity range (with acceptable pressure drop) and the linear
range.
The measurable range is defined by the minimum and maximum velocity
using the following table.
Vmin
Vmax 300 ft/s 30 ft/s
Vmin
Vmax 91 m/s 9.1 m/s
Gas Liquid
37
25
ρ
ft/s
ρ
m/s
1 ft/s
0.3 m/s
English
Metric
ρ
(lb/ft3)
ρ
(kg/m3)
The pressure drop for series 241 insertion meters is negligible. The pressure
drop for series 240 in-line meters is defined as:
2
ΔP = .00024 ρ V
ΔP = .000011 ρ V
English units (ΔP in psi, ρ in lb/ft3, V in ft/sec)
2
Metric units (ΔP in bar, ρ in kg/m3, V in m/sec)
The linear range is defined by the Reynolds number. The Reynolds number is the
ratio of the inertial forces to the viscous forces in a flowing fluid and is defined
as:
Where
Re =
ρ V D
μ
Re = Reynolds Number
ρ = mass density of the fluid being measured
V = velocity of the fluid being measured
D = internal diameter of the flow channel
μ = viscosity of the fluid being measured
The Strouhal number is the other dimensionless number that quantifies the
vortex phenomenon. The Strouhal number is defined as:
Where
St = Strouhal Number
f = frequency of vortex shedding
d = shedder bar width
V = fluid velocity
IM-24-HP 1-5
St =
f d
V
Page 12
Chapter 1 Introduction Series 24-HP Instruction Manual
As shown in Figure 1-3, Innova-Mass™ meters exhibit a constant
Strouhal number across a large range of Reynolds numbers, indicating a
consistent linear output over a wide range of flows and fluid types. Below this linear range, the intelligent electronics in Innova-Mass automatically corrects for the variation in the Strouhal number with the Reynolds
number. The meter’s smart electronics corrects for this non-linearity via
its simultaneous measurements of the process fluid temperature and pressure. This data is then used to calculate the Reynolds number in real
time. Innova-Mass meters automatically correct down to a Reynolds
number of 5,000.
0.3
Corrected range
Linear range
0.2
0.1
Strouhal Number, St
0.0
34
10
10
5000
5
10 10
Reynolds Number, Re
10
6
10
7
8
Figure 1-3. Reynolds Number Range for the Innova-Mass
Temperature Measurement
Innova-Mass Flow Meters use a 1000 ohm platinum resistance temperature
detector (PRTD) to measure fluid temperature.
1-6 IM-24-HP
Page 13
Series 24-HP Instruction Manual Chapter 1 Introduction
Pressure Measurement
Innova-Mass Flow Meters incorporate a solid-state pressure transducer
isolated by a 316 stainless steel diaphragm. The transducer itself is micro-machined silicon, fabricated using integrated circuit processing technology. A nine-point pressure/temperature calibration is performed on
every sensor. Digital compensation allows these transducers to operate
within a 0.3% of full scale accuracy band within the entire ambient temperature range of -4°F to 140°F. Thermal isolation of the pressure transducer ensures the same accuracy across the allowable process fluid temperature range of -40°F to 750°F.
Flow Meter Configurations
Innova-Mass™ Vortex Mass Flow Meters are available in two
configurations:
• Series 240 in-line flow meter (replaces a section of the pipeline)
• Series 241 insertion flow meter (requires a “cold” tap or a “hot” tap
into an existing pipeline)
Both the in-line and insertion configurations are similar in that they both
use identical electronics and have similar sensor heads. Besides installation differences, the main difference between an in-line flow meter and
an insertion flow meter is their method of measurement.
For an in-line vortex flow meter, the shedder bar is located across the entire diameter of the flow body. Thus, the entire pipeline flow is included
in the vortex formation and measurement. The sensing head, which directly measures velocity, temperature and pressure is located just downstream of the shedder bar.
Insertion vortex flow meters have a shedder bar located across the diameter of a short tube. The velocity, temperature and pressure sensor are located within this tube just downstream of a built-in shedder bar. This entire assembly is called the insertion sensing head. It fits through any entry port with a 1.875 inch minimum internal diameter.
The sensing head of an insertion vortex flow meter directly monitors the
velocity at a point in the cross-sectional area of a pipe, duct, or stack (referred to as “channels”). The velocity at a point in the pipe varies as a function of the Reynolds number. The insertion vortex flow meter computes the
Reynolds number and then computes the total flow rate in the channel. The
output signal of insertion meters is the total flow rate in the channel. The
accuracy of the total flow rate computation depends on adherence to the
piping installation requirements given in Chapter 2. If adherence to those
guidelines cannot be met, contact the factory for specific installation advice.
IM-24-HP 1-7
Page 14
Chapter 1 Introduction Series 24-HP Instruction Manual
Flow Meter Electronics
Innova-Mass Flow Meter electronics are available mounted directly to
the flow body, or remotely mounted. The electronics housing may be
used indoors or outdoors, including wet environments. Power requirements are 100 milliamps at 12-36 VDC. An optional AC powered unit is
available. Three analog output signals are available for your choice of
three of the five process variables: mass flow rate, volumetric flow rate,
temperature, pressure or fluid density.
Innova-Mass Flow Meters include a local 2 x 16 character LCD display
housed within the enclosure. Local operation and reconfiguration is accomplished using six pushbuttons operated via finger touch. For hazardous locations, the six buttons can be operated with the electronics enclosure sealed using a hand-held magnet, thereby not compromising the integrity of the hazardous location certification.
The electronics include nonvolatile memory that stores all configuration
information. The nonvolatile memory allows the flow meter to function
immediately upon power up, or after an interruption in power.
1-8 IM-24-HP
Page 15
Series 24-HP Instruction Manual Chapter 2 Installation
Warning!
Consult the flow meter namep-
late for specific flow meter ap-
provals before any hazardous
location installation.
Chapter 2 Installation
Installation Overview
Sierra’s Innova-Mass Vortex Flow Meter installations are simple and
straightforward. Both the Series 240 In-Line and Series 241 Insertion type
flow meter installations are covered in this chapter. After reviewing the
installation requirements given below, see page 2-3 for Series 240 installation instructions. See page 2-6 for Series 241 installation instructions.
Wiring instructions begin on page 2-19.
Flow Meter Installation Requirements
Before installing the flow meter, verify the installation site allows for
these considerations:
1. Line pressure and temperature will not exceed the flow meter
rating.
2. The location meets the required minimum number of pipe diame-
ters upstream and downstream of the sensor head as illustrated
Figure 2-1.
3. Safe and convenient access with adequate overhead clear-
ance for maintenance purposes.
4. Verify that the cable entry into the instrument meets the
specific standard required for hazardous area installations.
5. For remote installations, verify the supplied cable length is
sufficient to connect the flow meter sensor to the remote
electronics.
Also, before installation check your flow system for anomalies such as:
• leaks
• valves or restrictions in the flow path that could create distur-
bances in the flow profile that might cause unexpected flow rate
indications
IM-24-HP 2-1
Page 16
Chapter 2 Installation Series 24-HP Instruction Manual
Unobstructed Flow Requirements
Select an installation site that will minimize possible distortion in the flow
profile. Valves, elbows, control valves and other piping components may
cause flow disturbances. Check your specific piping condition against the
examples shown below. In order to achieve accurate and repeatable performance install the flow meter using the recommended number of
straight run pipe diameters upstream and downstream of the sensor.
Note: For liquid applications in vertical pipes, avoid installing with flow
in the downward direction because the pipe may not be full at all points.
Choose to install the meter with flow in the upward direction if possible.
AB
AB
C' C
Flow meter
Flow conditioner
(if used)
Example 1.
One 90° elbow before meter
Flow meter
Example 4.
Reduction before meter
AB
AB
C'
C
Flow meter
Flow conditioner
(if used)
Example 2.
Two 90° elbows before meter in one plane
Example 5.
Expansion before meter
C' C
Flow meter
Flow conditioner
(if used)
AB
AB
C'
C
Flow meter
Flow conditioner
(if used)
Example 3.
Two 90° elbows before meter out of plane (if three
90° bends present, double recommended length)
Example 6.
Regulator or valve partially closed before meter
(If valve is always wide open, base length
requirements on fitting directly preceding it)
C' C
Flow conditioner (if used)
Flow meter
Minimum Required
Upstream Diameters
No Flow
Conditioner
With Flow Conditioner
Example A A C C´ B B
1 10 D N/A N/A N/A 5 D 5 D
2 15 D 10 D 5 D 5 D 5 D 5 D
3 25 D 10 D 5 D 5 D 10 D 5 D
4 10 D 10 D 5 D 5 D 5 D 5 D
5 20 D 10 D 5 D 5 D 5 D 5 D
6 25 D 10 D 5 D 5 D 10 D 5 D
D = Internal diameter of channel. N/A = Not applicable
Minimum Required
Downstream Diameters
No Flow
Conditioner
With Flow
Conditioner
Figure 2-1. Recommended Pipe Length Requirements for Installation, Series 240 and 241
2-2 IM-24-HP
Page 17
Series 24-HP Instruction Manual Chapter 2 Installation
Series 240 In-Line Flow Meter Installation
Install the Series 240 In-Line Flow Meter between two conventional pipe
flanges as shown in Figures 2-3 and 2-4. Table 2-1 provides the recommended minimum stud bolt lengths for wafer-style meter body size and
different flange ratings.
The meter inside diameter is equal to the same size nominal pipe ID in
schedule 80. For example, a 2” meter has an ID of 1.939” (2” schedule
80). Do not install the meter in a pipe with an inside diameter smaller
than the inside diameter of the meter. For schedule 160 and higher
pipe, a special meter is required. Consult the factory before purchasing
the meter.
Series 240 Meters require customer-supplied gaskets. When selecting
gasket material make sure that it is compatible with the process fluid and
pressure ratings of the specific installation. Verify that the inside diameter
of the gasket is larger than the inside diameter of the flow meter and adjacent piping. If the gasket material extends into the flow stream, it will disturb the flow and cause inaccurate measurements.
Flange Bolt Specifications
Stud Bolt Lengths for Each Flange Rating (inches)
Line Size Class 150 Class 300 Class 600
1 inch 6.00 7.00 7.50
1.5 inch 6.25 8.50 9.00
2 inch 8.50 8.75 9.50
3 inch 9.00 10.00 10.50
4 inch 9.50 10.75 12.25
Table 2-1. Minimum Recommended Stud Bolt Lengths for Wafer Meters
The required bolt load for sealing the gasket joint is affected by several
application-dependent factors, therefore the required torque for each application may be different. Refer to the ASME Pressure Vessel Code
guidelines for bolt tightening standards.
1
34
2
1
8
6
5
34
7
2
4
10
4-bolt 8-bolt 12-bolt
1
12
8
6
5
9
3
7
11
2
Figure 2-2. Flange Bolt Torquing Sequence
IM-24-HP 2-3
Page 18
Chapter 2 Installation Series 24-HP Instruction Manual
Wafer-Style Flow Meter Installation
Install the wafer-style meter between two conventional pipe flanges of the
same nominal size as the flow meter. If the process fluid is a liquid, make
sure the meter is located where the pipe is always full. This may require
locating the meter at a low point in the piping system. Note: Vortex flow
meters are not suitable for two-phase flows (i.e., liquid and gas mixtures).
For horizontal pipelines having a process temperature above 300° F,
mount the meter at a 45 or 90-degree angle to avoid overheating the electronics enclosure. To adjust the viewing angle of the enclosure or display/keypad, see page 2-17.
Caution!
When using toxic or cor-
rosive gases, purge the
line with inert gas for a
minimum of four hours
at full gas flow before
installing the flow meter.
Figure 2-3. Wafer-Style Flow Meter Installation
When installing the meter make sure the section marked “inlet” is positioned
upstream of the outlet, facing the flow. This ensures that the sensor head is
positioned downstream of the vortex shedder bar and is correctly aligned to
the flow. Installing the meter opposite this direction will result in completely
inaccurate flow measurement. To install the meter:
1. Turn off the flow of process gas, liquid or steam. Verify that the line
is not pressurized. Confirm that the installation site meets the required
minimum upstream and downstream pipe diameters.
2. Insert the studs for the bottom side of the meter body between the pipe
flanges. Place the wafer-style meter body between the flanges with the
end stamped “inlet” facing flow. Center the meter body inside the diameter with respect to the inside diameter of the adjoining piping.
3. Position the gasket material between the mating surfaces. Make sure
both gaskets are smooth and even with no gasket material extending into the flow profile. Obstructions in the pipeline will disturb the flow and
cause inaccurate measurements
Place the remaining studs between the pipe flanges. Tighten the nuts in
4.
the sequence shown in Figure 2-2. Check for leaks after tightening the
flange bolts
2-4 IM-24-HP
Page 19
Series 24-HP Instruction Manual Chapter 2 Installation
Flange-Style Flow Meter Installation
Install the flange-style meter between two conventional pipe flanges of
the same nominal size as the flow meter. If the process fluid is a liquid,
make sure the meter is located where the pipe is always full. This may require locating the meter at a low point in the piping system. Note: Vortex
flow meters are not suitable for two-phase flows (i.e., liquid and gas mixtures). For horizontal pipelines having a process temperature above 300°
F, mount the meter at a 45 or 90-degree angle to avoid overheating the
electronics enclosure. To adjust the viewing angle of the enclosure or display/keypad, see page 2-17.
Caution!
When using toxic or corro-
sive gases, purge the line
with inert gas for a mini-
mum of four hours at full
gas flow before installing
the flow meter.
Figure 2-4. Flange-Style Flow Meter Installation
When installing the meter make sure the flange marked “inlet” is positioned
upstream of the outlet flange, facing the flow. This ensures that the sensor
head is positioned downstream of the vortex shedder bar and is correctly
aligned to the flow. Installing the meter opposite this direction will result in
completely inaccurate flow measurement. To install the meter:
1. Turn off the flow of process gas, liquid or steam. Verify that the line
is not pressurized. Confirm that the installation site meets the required
minimum upstream and downstream pipe diameters.
2. Seat the meter level and square on the mating connections with the flange
marked “inlet” facing the flow. Position a gasket in place for each side.
Make sure both gaskets are smooth and even with no gasket material extending into the flow profile. Obstructions in the pipeline will disturb the
flow and cause inaccurate measurements.
3. Install bolts in both process connections. Tighten the nuts in the se-
quence shown in Figure 2-2. Check for leaks after tightening the flange
bolts.
IM-24-HP 2-5
Page 20
Chapter 2 Installation Series 24-HP Instruction Manual
Series 241 Insertion Flow Meter Installation
Prepare the pipeline for installation using either a cold tap or hot tap method described on the following pages. Refer to a standard code for all
pipe tapping operations. The following tapping instructions are general in
nature and intended for guideline purposes only. Before installing the meter, review the mounting position and isolation value requirements given
below.
Mounting Position
Allow clearance between the electronics enclosure top and any other obstruction when the meter is fully retracted.
Isolation Valve Selection
An isolation valve is available as an option with Series 241 meters. If you
supply the isolation valve, it must meet the following requirements:
1. A minimum valve bore di-
ameter of 1.875 inches is required, and the valve’s body
size should be two inches.
2-inch min.
Normally, gate valves are
used.
2. Verify that the valve’s body
2-inch
valve size
and flange rating are within
the flow meter’s maximum
operating pressure and tem-
Isolation Valve Requirements
perature.
3. Choose an isolation valve with at least two inches existing between
the flange face and the gate portion of the valve. This ensures that the
flow meter’s sensor head will not interfere with the operation of the
isolation valve.
1.875-inch min.
valve bore
2-6 IM-24-HP
Page 21
Series 24-HP Instruction Manual Chapter 2 Installation
Caution!
When using toxic or
corrosive gases, purge
the line with inert gas
for a minimum of four
hours at full gas flow
before installing the
flow meter.
Warning!
All flow meter connec-
tions, isolation valves and
fittings for cold tapping
must have the same or
pressure rating as
higher
the main pipeline.
Cold Tap Guidelines
Refer to a standard code for all pipe tapping operations. The following
tapping instructions are general in nature and intended for guideline purposes only.
1. Turn off the flow of process gas, liquid or steam. Verify that the line
is not pressurized.
2. Confirm that the installation site meets the minimum upstream and
downstream pipe diameter requirements. See Figure 2-1.
3. Use a cutting torch or sharp cutting tool to tap into the pipe. The pipe
opening must be at least 1.875 inches in diameter. (Do not attempt to
insert the sensor probe through a smaller hole.)
4. Remove all burrs from the tap. Rough edges may cause flow profile
distortions that could affect flow meter accuracy. Also, obstructions
could damage the sensor assembly when inserting into the pipe.
5. After cutting, measure the thickness of the cut-out and record this
number for calculating the insertion depth.
6. Weld the flow meter pipe con-
nection on the pipe. Make sure
this connection is within ± 5°
perpendicular to the pipe centerline.
7. Install the isolation valve (if
used).
8. When welding is complete and all fittings are installed, close the
isolation valve or cap the line. Run a static pressure check on the
welds. If pressure loss or leaks are detected, repair the joint and retest.
9. Connect the meter to the pipe process connection.
10. Calculate the sensor probe insertion depth as described on the follow-
ing pages. Insert the sensor probe into the pipe.
IM-24-HP 2-7
Page 22
Chapter 2 Installation Series 24-HP Instruction Manual
Warning!
Hot tapping must be
performed by a trained pro-
fessional. US. regulations of-
ten require a hot tap permit.
The manufacturer of the hot
tap equipment and/or the con-
tractor performing the hot tap
is responsible for providing
proof of such a permit.
Warning!
All flow meter connections,
isolation valves and fittings for
hot tapping must have the
same or higher pressure rat-
ing as the main pipeline
Hot Tap Guidelines
Refer to a standard code for all pipe tapping operations. The following
.
tapping instructions are general in nature and intended for guideline purposes only.
1. Confirm that the installation site meets the minimum upstream and
downstream pipe diameter requirements.
2. Weld a two inch mounting adapter on the pipe. Make sure the mount-
ing adapter is within ± 5° perpendicular to the pipe centerline (see
previous page). The pipe opening must be at least 1.875 inches in diameter.
3. Connect a two inch process connection on the mounting adapter.
4. Connect an isolation valve on the process connection. The valve’s full
open bore must be at least 1.875 inches in diameter.
5. Hot tap the pipe.
6. Close the isolation valve. Run a static pressure check on the welds. If
pressure loss or leaks are detected, repair the joint and re-test.
7. Connect the flow meter to the isolation valve.
8. Calculate the sensor probe insertion depth as described on the follow-
ing pages. Insert the sensor probe assembly into the pipe.
Check upstream and
downstream piping
requirements
Weld mounting
adapter
Connect process
connection
(flange or NPT)
Connect
isolation valve
Hot tap pipe
FLOW
Test for leaks,
purge pipe
Connect meter to
valve, calculate
insertion depth,
install flow meter
Figure 2-5. Hot Tap Sequence
2-8 IM-24-HP
Page 23
Series 24-HP Instruction Manual Chapter 2 Installation
Flow Meter Insertion
The sensor head must be properly positioned in the pipe. For this reason,
it is important that insertion length calculations are carefully followed. A
sensor probe inserted at the wrong depth in the pipe will result in inaccurate readings.
Insertion flow meters are applicable to pipes 2 inch and larger. For pipe
sizes ten inches and smaller, the centerline of the meter’s sensing head is
located at the pipe’s centerline. For pipe sizes larger than ten inches, the
centerline of the sensing head is located in the pipe’s cross section five
inches from the inner wall of the pipe; i.e., its “wetted” depth from the
wall to the centerline of the sensing head is five inches.
Insertion flow meters are available in three probe lengths:
Standard Probe configuration is used with most flow meter process
connections. The length, S, of the stem is 29.47 inches.
Compact Probe configuration is used with compression fitting process
connections. The length, S, of the stem is 13.1 inches.
12-Inch Extended Probe configuration is used with exceptionally lengthy
flow meter process connections. The length, S, of the stem is 41.47 inches.
Warning!
An insertion tool must be
used for any installation
where a flow meter is
inserted under pressure
greater than 50 psig.
Use the Correct Insertion Formula
Depending on your flow meter’s process connection, use the applicable
insertion length formula and installation procedure as follows:
• Flow meters with a compression type connection (NPT or flanged)
follow the instructions beginning on page 2-10.
• Flow meters with a packing gland type connection (NPT or flanged)
configured with an insertion tool, follow the instructions beginning on
page 2-12.
• Flow meters with a packing gland type connection (NPT or flanged)
without an insertion tool, follow the instructions beginning on page
2-15.
IM-24-HP 2-9
Page 24
Chapter 2 Installation Series 24-HP Instruction Manual
Installing Flow Meters with a Compression Connection*
Use the following formula to determine insertion length for flow meters
(NPT and flanged) with a compression process connection. The installation procedure is given on the next page.
Insertion Length Formula
I = S – F – R – t
Where:
I = Insertion length.
S = Stem length – the distance from the center of the sensor head to the base
of the enclosure adapter (S = 29.47 inches for standard probes; S = 13.1
inches for compact; S = 41.47 inches for 12-inch extended).
F = Distance from the raised face of the flange or top of NPT stem housing to
the outside of the pipe wall.
R = Pipe inside diameter ÷ 2 for pipes ten inches and smaller.
R = Five inches for pipe diameters larger than ten inches.
t = Thickness of the pipe wall. (Measure the disk cut-out from the tapping
procedure or check a piping handbook for thickness.)
Figure 2-6. Insertion Calculation (Compression Type)
Example:
To install a Series 241 meter with a standard probe (S = 29.47 inches) into a 14
inch schedule 40 pipe, the following measurements are taken:
F=3 inches
R=5 inches
t=0.438 inches
The insertion length for this example is 21.03 inches. Insert the stem through
the fitting until an insertion length of 21.03 inches is measured with a ruler.
*All dimensions are in inches
2-10 IM-24-HP
Page 25
Series 24-HP Instruction Manual Chapter 2 Installation
Insertion Procedure for Meters with a Compression Connection
Caution!
The sensor alignment
pointer must point
downstream, in the
direction of flow
Warning!
To avoid serious injury,
DO NOT loosen the
compression fitting
under pressure
Figure 2-7. Flow Meter with Compression Type Fitting
1. Calculate the required sensor probe insertion length.
2. Fully retract the stem until the sensor head is touching the bottom of
the stem housing. Slightly tighten the compression nut to prevent
slippage.
.
3. Bolt or screw the flow meter assembly into the process connection.
Use Teflon tape or pipe sealant to improve the seal and prevent seizing on NPT styles.
4. Hold the meter securely while loosening the compression fitting. In-
sert the sensor into the pipe until the calculated insertion length, I, is
measured between the base of the enclosure adapter and the top of
.
the stem housing, or to the raised face of the flanged version. Do
not force the stem into the pipe.
5. Align the sensor head using the sensor alignment pointer. Adjust the
alignment pointer parallel to the pipe and pointing downstream.
6. Tighten the compression fitting to lock the stem in position. When
the compression fitting is tightened, the position is permanent.
IM-24-HP 2-11
Page 26
Chapter 2 Installation Series 24-HP Instruction Manual
Installing Flow Meters with a Packing Gland Connection*
Use the formula below to determine the insertion depth for flow meters
(NPT and flanged) equipped with an insertion tool. To install, see the next
page for instructions for meters with a permanent insertion tool. For meters with a removable insertion tool, see page 2-14.
Insertion Length Formula
I = F + R + t – 1.35
Where:
I = Insertion length.
F = Distance from the raised face of the flange or
top of the process connection for NPT style
meters to the top outside of the process pipe.
R = Pipe inside diameter ÷ 2 for pipes ten inches &
smaller.
R = Five inches for pipe diameters larger than ten
inches.
t = Thickness of the pipe wall. (Measure the disk
cut-out from the tapping procedure or check a
piping handbook for thickness.)
Figure 2-8. Insertion Calculation (Meters with Insertion Tool)
Example 1: Flange Style Meters:
To install a Series 241 Flow Meter into a 14 inch schedule 40 pipe, the following measurements are taken:
F = 12 inches
R = 5 inches
t = 0.438 inches
The example insertion length is 16.09 inches.
Example 2: NPT Style Meters:
The length of thread engagement on the NPT style meters is also subtracted in
the equation. The length of the threaded portion of the NPT meter is 1.18
inches. Measure the thread portion still showing after the installation and subtract that amount from 1.18 inches. This gives you the thread engagement
length. If this cannot be measured use .55 inch for this amount.
F = 12 inches
R = 5 inches
The example insertion length is 15.54 inches.
*All dimensions are in inches.
t = 0.438 inches
2-12 IM-24-HP
Page 27
Series 24-HP Instruction Manual Chapter 2 Installation
Insertion Procedure for Flow Meters with Permanent Insertion Tool
Caution!
The sensor alignment
pointer must point
downstream, in the
direction of flow.
Note
If line pressure is above
500 psig, it could require
up to 25 ft lb of torque to
insert the flow meter.
Do not confuse this with
possible interference
in the pipe.
Figure 2-9. Flow Meter with Permanent Insertion Tool
1. Calculate the required sensor probe insertion length (see previous
page). Measure from the depth marker arrow down the stanchion and
scribe a mark at the calculated insertion depth.
2. Fully retract the flow meter until the sensor head is touching the bot-
tom of the stem housing. Attach the meter assembly to the two inch
full-port isolation valve, if used. Use Teflon tape or pipe sealant to
improve seal and prevent seizing on NPT style.
3. Loosen the two packing gland nuts on the stem housing of the meter.
Loosen the stem lock bolt adjacent to the sensor alignment pointer.
Align the sensor head using the sensor alignment pointer. Adjust the
alignment pointer parallel to the pipe and pointing downstream. Tighten
the stem lock bolt to secure the sensor position.
4. Slowly open the isolation valve to the full open position. If necessary,
slightly tighten the two packing gland nuts to reduce the leakage
around the stem.
5. Turn the insertion tool handle clockwise to insert the sensor head into
the pipe. Continue until the top of the upper retractor bracket aligns
with the insertion length position scribed on the stanchion. Do not
force the stem into the pipe.
6. Tighten the packing gland nuts to stop leakage around the stem. Do
not torque over 20 ft-lb.
IM-24-HP 2-13
Page 28
Chapter 2 Installation Series 24-HP Instruction Manual
Caution!
The sensor alignment
pointer must point
downstream, in the
direction of flow
Note
If line pressure is above
500 psig, it could require
up to 25 ft lb of torque to
insert the flow meter.
Do not confuse this with
possible interference
in the pipe.
Insertion Procedure for Flow Meters with Removable Insertion Tool
Figure 2-10. Flow Meter with Removable Insertion Tool
1. Calculate the required sensor probe insertion length. Measure from
the depth marker arrow down the stanchion and scribe a mark at the
.
calculated insertion depth.
2. Fully retract the flow meter until the sensor head is touching the bot-
tom of the stem housing. Attach the meter assembly to the two inch
full-port isolation valve, if used. Use Teflon tape or pipe sealant to
improve seal and prevent seizing on NPT style.
3. Remove the two top stem clamp nuts and loosen two stem clamp
bolts. Slide the stem clamp away to expose the packing gland nuts.
4. Loosen the two packing gland nuts. Loosen the stem lock bolt adja-
cent to the sensor alignment pointer. Align the sensor head using the
sensor alignment pointer. Adjust the alignment pointer parallel to the
pipe and pointing downstream. Tighten the stem lock bolt to secure
the sensor position.
5. Slowly open the isolation valve to the full open position. If necessary,
slightly tighten the two packing gland nuts to reduce the leakage
around the stem.
6. Turn the insertion tool handle clockwise to insert the stem into the
pipe. Continue until the top of the upper retractor bracket lines up
with the insertion length mark scribed on the stanchion. Do not force
the stem into the pipe.
2-14 IM-24-HP
Page 29
Series 24-HP Instruction Manual Chapter 2 Installation
7. Tighten the packing gland nuts to stop leakage around the stem. Do not
torque over 20 ft-lbs.
8. Slide the stem clamp back into position. Torque stem clamp bolts to 15
ft-lbs. Replace the stem clamp nuts and torque to 10-15 ft-lbs.
9. To separate the insertion tool from the flow meter, remove four socket
head cap bolts securing the upper and lower retractor brackets. Remove
the insertion tool.
Installation of Meters with Packing Gland Connection (No Insertion Tool)*
Use the following formula to determine insertion depth for meters with a
packing gland connection (NPT and flanged) without an insertion tool.
Insertion Length Formula
I = S – F – R – t
Where:
I = Insertion length.
S = Stem length – the distance from the
center of the sensor head to the base of
the enclosure adapter (S = 29.47 inches
for standard probes; S = 41.47 inches
for 12 inch extended probes).
F = Distance from the raised face of the
flange or top of NPT stem housing to
the outside of the pipe wall.
R = Pipe inside diameter ÷ 2 for pipes ten
inches & smaller.
R = Five inches for pipe diameters larger than ten
inches.
t = Thickness of the pipe wall. (Measure the disk
cut-out from the tapping procedure or check a
piping handbook for thickness.)
Figure 2-11. Insertion Calculation (Meters without Insertion Tool)
Example:
To install a Series 241 Flow Meter with a standard probe (S = 29.47) into
a 14 inch schedule 40 pipe, the following measurements are taken:
F = 3 inches
R = 5 inches
t = 0.438 inches
The example insertion length is 21.03 inches.
*All dimensions are in inches.
IM-24-HP 2-15
Page 30
Chapter 2 Installation Series 24-HP Instruction Manual
Warning!
The line pressure
must be less than
50 psig for installation.
Caution!
The sensor alignment
pointer must point
downstream, in the
direction of flow
Insertion Procedure for Flow Meters with No Insertion Tool
(Packing Gland Connection)
.
1. Calculate the required sensor probe insertion length.
2. Fully retract the stem until the sensor head is touching the bottom of the
stem housing. Remove the two top stem clamp nuts and loosen two
stem clamp bolts. Slide the stem clamp away to expose the packing
gland nuts. Loosen the two packing gland nuts.
3. Align the sensor head using the sensor alignment pointer. Adjust the
alignment pointer parallel to the pipe and pointing downstream.
4. Insert the sensor head into the pipe until insertion length, I, is
achieved. Do not force the stem into the pipe.
5. Tighten the packing gland nuts to stop leakage around the stem. Do
not torque over 20 ft-lbs.
6. Slide the stem clamp back into position. Torque stem clamp bolts to
15 ft-lbs. Replace the stem clamp nuts and torque to 10-15 ft-lbs.
2-16 IM-24-HP
Page 31
Series 24-HP Instruction Manual Chapter 2 Installation
Adjusting Meter Orientation
Depending on installation requirements, you may need to adjust the meter
orientation. There are two adjustments available. The first rotates the position of the LCD display/keypad and is available on both in-line and insertion meters. The second is to rotate the enclosure position. This adjustment is only allowed on Series 240 In-Line meters.
Display/Keypad Adjustment (All Meters)
Figure 2-12. Display/Keypad Viewing Adjustment
The electronics boards are electrostatically sensitive. Wear a grounding
wrist strap and make sure to observe proper handling precautions required
for static-sensitive components. To adjust the display:
1. Disconnect power to the flow meter.
2. Loosen the small set screw which secures the electronics enclosure.
Unscrew and remove the cover.
3. Loosen the 4 captive screws.
4. Carefully pull the display/microprocessor board away from the meter
standoffs. Make sure not to damage the connected ribbon cable.
5. Rotate the display/microprocessor board to the desired position. Max-
imum turn, two positions left or two positions right (180-degrees).
6. Align the board with the captive screws. Check that the ribbon cable
is folded neatly behind the board with no twists or crimps.
7. Tighten the screws. Replace the cover and set screw. Restore power to
the meter.
IM-24-HP 2-17
Page 32
Chapter 2 Installation Series 24-HP Instruction Manual
Enclosure Adjustment (Series 240 Only)
Figure 2-13. Enclosure Viewing Adjustment
To avoid damage to the sensor wires, do not rotate the enclosure beyond
180-degrees from the original position. To adjust the enclosure:
1. Remove power to the flow meter.
2. Loosen the three set screws shown above. Rotate the display to the
desired position (maximum 180-degrees).
3. Tighten the three set screws. Restore power to the meter.
2-18 IM-24-HP
Page 33
Series 24-HP Instruction Manual Chapter 2 Installation
A
Warning!
To avoid potential electric shock, follow
National Electric Code safety practices or
your local code when wiring this unit to a
power source and to peripheral devices.
Failure to do so could result in injury or
death. All AC power connections must be
in accordance with published CE direc-
tives. All wiring procedures must be per-
formed with the power off.
Caution!
The AC wire insulation tempera-
ture rating must meet or exceed
85°C (185°F).
Wiring Connections
The NEMA 4X enclosure contains an integral wiring compartment with
Input Power Connections
one dual strip terminal block (located in the smaller end of the enclosure). Two 3/4-inch female NPT conduit entries are available for separate power and signal wiring. For all hazardous area installations, make
sure to use an agency-approved fitting at each conduit entry. If conduit
seals are used, they must be installed within 18 inches (457 mm) of the
enclosure.
To access the wiring terminal blocks, locate and loosen the small set
screw which locks the small enclosure cover in place. Unscrew the cover to expose the terminal block.
AC Power Wiring
The AC power wire size must be 20 to 10 AWG with the wire stripped
1/2 inch (14 mm). The wire insulation temperature must meet or exceed
85°C (185°F). Connect 100 to 240 VAC (25 watts maximum) to the Hot
and Neutral terminals on the terminal block. Connect the ground wire to
the safety ground lug. Torque all connections to 4.43 to 5.31 in-lbs (0.5
to 0.6 Nm). Use a separate conduit entry for signal lines to reduce the
possibility of AC noise interference.
C Terminals
DC Terminals
IM-24-HP 2-19
Figure 2-14. AC Power Connections
DC Power Wiring
The DC power wire size must be 20 to 10 AWG with the wire stripped
1/2 inch (14 mm). Connect 18 to 36 VDC (100 mA maximum current
draw) to the +Pwr and –Pwr terminals on the terminal block. Torque all
connections to 4.43 to 5.31 in-lbs (0.5 to 0.6 Nm).
Figure 2-15. DC Power Connections
Page 34
Chapter 2 Installation Series 24-HP Instruction Manual
4-20 mA Output Connections
The standard Innova-Mass Flow Meter has a single 4-20 mA loop. Two
additional loops are available on the optional communication board. The
4-20 mA loop current is controlled by the meter electronics. The electronics must be wired in series with the sense resistor or current meter. The
current control electronics require 12 volts at the input terminals to operate correctly.
The maximum loop resistance (load) for the current loop output is dependent upon the supply voltage and is given in Figure 2-16. The 4-20 mA
loop is optically isolated from the flow meter electronics.
is the total resistance in the loop, including the wiring resistance
R
load
= R
(R
load
use the maximum loop current, 20 mA. The voltage drop in the loop due
to resistance is 20 mA times R
put voltage. Thus:
The maximum resistance R
wire
+ R
). To calculate R
sense
, the maximum R
max
and this drop is subtracted from the in-
load
load
= R
= 50 * (V
max
supply
for the loop,
load
– 12V).
Figure 2-16. Load Resistance Versus Input Voltage
Figure 2-17. Isolated 4–20 mA Output with External Power Supply
2-20 IM-24-HP
Page 35
Series 24-HP Instruction Manual Chapter 2 Installation
Figure 2-18. Non-Isolated 4–20 mA Output Using Meter Input Power Supply
Figure 2-19. Isolated 4–20 mA Output using Meter Provided Power Supply
Pulse Output Connections
The pulse output is used for a remote counter. When the preset volume or
mass (defined in the totalizer settings, see page 3-8) has passed the meter,
the output provides a 50 millisecond square pulse.
The pulse output optical relay is a normally-open single-pole relay. The
relay has a nominal 200 volt/160 ohm rating. This means that it has a nominal on-resistance of 160 ohms, and the largest voltage that it can withstand across the output terminals is 200 volts. However, there are current
and power specifications that must be observed. The relay can conduct a
current up to 40 mA and can dissipate up to 320 mW. The relay output is
isolated from the meter electronics and power supply.
There are three connection options for the pulse output–the first with a separate power supply (Figure 2-20), the second using the flow meter power
supply (Figure 2-21)(DC powered units only), and the third using the internal 24 VDC power supply (Figure 2-22)(AC powered units only). Use the
first option with a separate power supply (5 to 36 VDC) if a specific voltage
is needed for the pulse output. Use the second configuration if the voltage at
the flow meter power supply is an acceptable driver voltage for the load
connected. (Take into account that the current used by the pulse load comes
from the meter’s power supply). Use the third configuration if you have an
AC powered unit only. In any case, the voltage of the pulse output is the
same as the voltage supplied to the circuit.
IM-24-HP 2-21
Page 36
Chapter 2 Installation Series 24-HP Instruction Manual
Figure 2-20. Isolated Pulse Output with External Power Supply
Figure 2-21. Non-Isolated Pulse Output Using Input Power Supply
Figure 2-22. Isolated Pulse Output Using Meter Provided Power Supply
2-22 IM-24-HP
Page 37
Series 24-HP Instruction Manual Chapter 2 Installation
Alarm Output Connections
One alarm output (Alarm 1) is included on the standard Innova-Mass™
Flow Meter. Two or more alarms (Alarm 2 and Alarm 3) are included on
the optional communication board. The alarm output optical relays are
normally-open single-pole relays. The relays have a nominal 200 volt/160
ohm rating. This means that each relay has a nominal on-resistance of 160
ohms and the largest voltage that it can withstand across the output terminals is 200 volts. However, there are current and power specifications
that must be observed. The relay can conduct a current up to 40 mA and
can dissipate up to 320 mW. The relay output is isolated from the meter
electronics and power supply. When the alarm relay is closed, the current
draw will be constant. Make sure to size R
There are three connection options for the alarm output–the first with a separate power supply (Figure 2-23), the second using the flow meter power
supply (Figure 2-24)(DC powered units only) and the third with the meter
provided power supply (Figure 2-25)(AC powered units only). Use the first
option with a separate power supply (5 to 36 VDC) if a specific voltage is
needed for the alarm output. Use the second configuration if the voltage at
the flow meter power supply is an acceptable driver voltage for the load
connected. (Take into account that the current used by the alarm load comes
from the meter’s power supply). Use the third if you have an AC powered
unit only. In any case, the voltage of the alarm output is the same as the voltage supplied to the circuit.
The alarm output is used for transmitting high or low process conditions
as defined in the alarm settings (see page 3-7).
appropriately.
load
Figure 2-23. Isolated Alarm Output with External Power Supply
Figure 2-24. Non-Isolated Alarm Output Using Internal Power Supply
IM-24-HP 2-23
Page 38
Chapter 2 Installation Series 24-HP Instruction Manual
Figure 2-25. Isolated Alarm Output Using Meter Provided Power Supply
Remote Electronics Wiring
The remote electronics enclosure should be mounted in a convenient, easy
to reach location. For hazardous location installations, make sure to observe agency requirements for installation. Allow some slack in the interface cable between the junction box and the remote electronics enclosure.
To prevent damage to the wiring connections, do not put stress on the
terminations at any time.
The meter is shipped with temporary strain relief glands at each end of the
cable. Disconnect the cable from the meter’s terminal block inside the
junction box–not at the remote electronics enclosure. Remove both glands
and install appropriate conduit entry glands and conduit. When installation is complete, re-connect each labeled wire to the corresponding terminal position on the junction box terminal block. Make sure to connect
each wire pair’s shield. Note: incorrect connection will cause the meter to
malfunction.
PWR
GND
Sensor V1
Sensor V2
Shield
Figure 2-26. Junction Box Sensor Connections
Note: Numeric code in junction box label matches wire labels.
2-24 IM-24-HP
Page 39
Series 24-HP Instruction Manual Chapter 2 Installation
Optional Input Electronics Wiring
The meter has two optional input wiring terminals. These can be used to
input a Remote or Second RTD input in the case of an Energy Monitoring
meter, for the input of a Remote Pressure Transducer, to pass a Contact
Closure or for a Remote Density measurement to name a few. In any
case, the wiring diagram will be included with the meter if any of the options are specified. Otherwise, the optional terminal blocks will be left
blank and non functional.
Optional Energy EMS Input Electronics Wiring
The recommended customer supplied second RTD is a Class A 1000 ohm
4-wire platinum RTD. If a second RTD is not being used, then the factory
supplied 1000 ohm resistor needs to be installed in its place.
IM-24-HP 2-25
Page 40
Series 24-HP Instruction Manual Chapter 3 Operation
Chapter 3 Operating Instructions
After installing the Innova-Mass Vortex Flow Meter, you are
ready to begin operation. The sections in this chapter explain the
display/keypad commands, meter start-up and programming. The
meter is ready to operate at start up without any special programming. To enter parameters and system settings unique to
your operation, see the following pages for instructions on using
the setup menus.
Flow Meter Display/Keypad
The flow meter’s digital electronics allow you to set, adjust and
monitor system parameters and performance. A full range of
commands are available through the display/keypad. The LCD
Pro-V
VorTek
Instruments,
LLC
TM
Display/Keypad
EXIT ENTER
Õ Ö
display gives 2 x 16 characters for flow monitoring and programming. The six push-buttons can be operated with the enclosure cover removed. Or, the explosion-proof cover can remain
in place and the keypad operated with a hand-held magnet positioned at the side of the enclosure as shown in the illustration at
the left.
Commands
×
Innova-Mass™
Sierra
INSTRUMENTS
Ø
From the Run Mode, the
access to the Setup Menus (through a
password screen). Within the Setup Menus,
pressing
To set new parameters, press the
until an underline cursor appears. Use the
×ØÕÖ
Press
alllowed,
are disabled when using the Setup Menus.
The
When using a Setup Menu,
Run Mode. If you are changing a parameter and
make a mistake,
ENTER
keys to select new parameters.
ENTER
ENTER
key is active within the Setup Menus.
EXIT
activates the current field.
to continue. (If change is not
EXIT
ENTER
has no effect.) All outputs
allows you to start over.
key allows
returns you to the
EXIT
ENTER
key
The
×ØÕÖ
of the current menu. When changing a system
parameter, all
new parameters.
keys advance through each screen
×ØÕÖ
keys are available to enter
Figure 3-1. Flow Meter Display/Keypad
IM-24-HP 3-1
Page 41
Chapter 3 Operation Series 24-HP Instruction Manual
Start-Up
To begin flow meter operation:
1. Verify the flow meter is installed and wired as described in Chapter
2.
Note
Starting the flow meter
or pressing EXIT will
always display the Run
Mode screens.
2. Apply power to the meter. At start up, the unit runs a series of self-
tests that check the RAM, ROM, EPROM and all flow sensing components. After completing the self-test sequence, the Run Mode
screens appear
.
3. The Run Mode displays flow information as determined by system
settings. Press the ×Ø arrow keys to view the Run Mode screens.
4. Press the ENTER key from any Run Mode screen to access the Setup
Menus. Use the Setup Menus to configure the meter’s multiparameter features to fit your application.
Run Mode
Screens
ENTER
Mass Flow
Rate
Volume
Flow Rate
Temperature
Password
Setup
Menus
ENTER
Press Exit to return
to Run Mode
Pressure
*
Energy
Density
Total
Alarm 1
Status
Alarm 2
Status
Alarm 3
Status
Fluid
Date & Time
Use
keys to access
each item
3-2 IM-24-HP
Page 42
Series 24-HP Instruction Manual Chapter 3 Operation
Using the Setup Menus
Programming the Flow Meter
1. Enter the Setup Menu by pressing the ENTER key until prompted for a password. (All
outputs are disabled while using the Setup Menus.)
2. Use the ×ØÕÖ keys to select the password characters (1234 is the factory-set
password). When the password is correctly displayed, press ENTER to continue.
3. Use the Setup Menus described on the following pages to customize the multiparameter features of your Innova-Mass Flow Meter. (The entire lower display line is
available for entering parameters.)
4. To activate a parameter, press ENTER. Use the ×ØÕÖ keys to make selections. Press
ENTER to continue. Press EXIT to save or discard changes and return to Run Mode.
5.
Program the UNITS menu first because later menus will be based on the units
selected.
IM-24-HP 3-3
Page 43
Chapter 3 Operation Series 24-HP Instruction Manual
Output Menu
3-4 IM-24-HP
Page 44
Series 24-HP Instruction Manual Chapter 3 Operation
Example for Setting an Output
The following shows how to set Output 1 to measure mass flow with 4 mA = 0 lb/hr and 20 mA = 100 lb/hr with
a time constant of 5 seconds. (All outputs are disabled while using the Setup Menus.)
First, set the desired units of measurement:
1. Use ÕÖ keys to move to the Units Menu (see page 3-9).
2. Press Ø key until Mass Flow Unit appears. Press
3. Press Ø key until lb appears in the numerator. Press Ö key to move the underline cursor to the
denominator. Press the Ø key until hr appears in the denominator. Press
4. Press × key until Units Menu appears.
Second, set the analog output:
1. Use ÕÖ keys to move to the Output Menu.
2. Press the Ø key until 4-20 mA Output 1 appears.
3. Press Ö key to access Measure selections. Press
4. Press Ö key to set the 4 mA point in the units you have selected for mass of lb/hr. Press
use ×ØÕÖ keys to set 0 or 0.0. Press
5. Press Ö key to set the 20 mA point. Press
6. Press Ö key to select the Time Constant. Press
7. Press the
EXIT key and answer YES to permanently save your changes.
ENTER.
ENTER to select.
ENTER and press the Ø key to select Mass. Press ENTER.
ENTER and
ENTER.
ENTER and use ×ØÕÖ keys to set 100 or 100.0. Press ENTER.
ENTER and use ×ØÕÖ keys to select 5. Press ENTER.
IM-24-HP 3-5
Page 45
Chapter 3 Operation Series 24-HP Instruction Manual
Display Menu
Run Mode
ENTER
Password
ENTER
Display
Menu
Cycle Time(Sec)
0
Number of Digits
2
Display TC(sec)
1
MF Vf Te Pr De T
Y or N
A1 A2 A3 Fl Dt E
Y or N
Use
keys to access menus
If Cycle Time is set to zero, manual advance is required
Used to set t he number of digits displayed afte r
decimal point
TC = Display Time Constant, used to smooth display
Mf = Mass Flow
Vf = Volume Flow
Te = Temperature
Pr = Pressure
De = Density
T = Total
A1 = Alarm 1 Status
A2 = Alarm 2 Status
A3 = Alarm 3 Status
Fl = Fluid
Dt = Density
* E = Energy
For each parameter:
Select Yes to view parameter in Run Mode
Select No to hide parameter in Run Mode
* Energy EMS Meters Only
Use the Display Menu to set the cycle time for automatic screen sequencing used in the Run
Mode, change the precision of displayed values, smooth the values or enable or disable each item
displayed in the Run Mode screens.
Example for Changing a Run Mode Display Item
The following shows how to remove the temperature screen from the Run Mode screens. Note: all outputs
are disabled while using the Setup Menus.
1. Use ÕÖ keys to move to the Display Menu.
2. Press Ø key until Mf Vf Pr Te De T appears.
3. Press
4. Press Ø key until N appears. Press
5. Press EXIT and then
3-6 IM-24-HP
ENTER to select. Press Ö key until the cursor is positioned below Te.
ENTER to select.
ENTER to save changes and return to the Run Mode.
Page 46
Series 24-HP Instruction Manual Chapter 3 Operation
Alarms Menu
Example for Setting an Alarm
The following shows how to set Alarm 1 to activate if the mass flow rate is greater than 100 lb/hr. You can check
the alarm configuration in the Run Mode by pressing the ×Ø keys until Alarm [1] appears. The lower line displays
the mass flow rate at which the alarm activates. Note: all outputs are disabled while using the Setup Menus.
First, set the desired units of measurement:
1. Use ÕÖ keys to move to the Units Menu (see to page 3-9).
2. Press Ø key until Mass Flow Unit appears. Press
3. Press Ø key until lb appears in the numerator. Press Ö key to move the underline cursor to the
denominator. Press the Ø key until hr appears in the denominator. Press
4. Press × key until Units Menu appears.
Second, set the alarm:
1. Use ÕÖ keys to move to the Alarms Menu.
2. Press the Ø key until Alarm Output 1 appears.
3. Press Ö key to access Measure selections. Press
4. Press Ö key to select the alarm Mode. Press
5. Press Ö key to select the value that must be exceeded before the alarm activates. Press
×ØÕÖ keys to set 100 or 100.0. Press
6. Press the
(Up to three alarm outputs are available depending on meter configuration.)
EXIT key to save your changes. (Alarm changes are always permanently saved.)
IM-24-HP 3-7
ENTER.
ENTER to select.
ENTER and use the Ø key to select Mass. Press ENTER.
ENTER and use Ø key to select HIGH Alarm. Press ENTER.
ENTER and use
ENTER.
Page 47
Chapter 3 Operation Series 24-HP Instruction Manual
Totalizer #1 Menu
Run Mode
ENTER
Password
ENTER
Totalizer
Menu
Totaling
Inactive
Mass
Volume
Energy
Use
keys to access menus
Example:
Maximum flow rate = 600 gallons per minute
(600 gallons per minute = 10 gallons per second)
(unit)/Pulse
xxxx
If unit per pulse is set to 600 gallons per pulse,
the totalizer will pulse once every minute.
Reset Total?
YES or NO
If unit per pulse is set to 10 gallons per pulse,
the totalizer will pulse once every second.
Use the Totalizer Menu to configure and monitor the totalizer. The totalizer output is a 50 millisecond
(.05 second) positive pulse (relay closed for 50 milliseconds). The totalizer cannot operate faster than
one pulse every 100 millisecond (.1 second). A good rule to follow is to set the unit per pulse value
equal to the maximum flow in the same units per second. This will limit the pulse to no faster than
one pulse every second.
Example for Setting the Totalizer
The following shows how to set the totalizer to track mass flow in kg/sec. (All outputs are disabled while using
the Setup Menus.)
First, set the desired units of measurement:
1. Use ÕÖ keys to move to the Units Menu (see to page 3-9).
2. Press Ø key until Mass Flow Unit appears. Press
ENTER.
3. Press Ø key until kg appears in the numerator. Press Ö key to move the underline cursor to the
denominator. Press the Ø key until sec appears in the denominator. Press
ENTER to select.
4. Press × key until Units Menu appears.
Second, set the pulse output:
1. Use ÕÖ keys to move to the Totalizer Menu.
2. Press the Ø key until Totaling appears.
3. Press
ENTER and press the Ø key to select Mass. Press ENTER.
4. Press Ø key to set the pulse output in the units you have selected for mass flow of kg/sec. Press
ENTER and use ×ØÕÖ keys to set the pulse value equal to the maximum flow in the same units per
second. Press
5. To reset the totalizer, press Ø key until Reset Total? appears. Press
totalizer if desired. Press
6. Press the
ENTER.
ENTER and the Ø key to reset the
ENTER.
EXIT key and answer YES to permanently save your changes.
3-8 IM-24-HP
Page 48
Series 24-HP Instruction Manual Chapter 3 Operation
Totalizer #2 Menu
Run Mode
ENTER
Password
ENTER
Totalizer
Menu
Totaling
Inactive
Mass
Volume
Energy
Reset Total?
YES or NO
Use
keys to access menus
Use the Totalizer #2 to Monitor Flow or Energy. Note that Totalizer #2 does not operate a relay, it is
for monitoring only.
IM-24-HP 3-9
Page 49
Chapter 3 Operation Series 24-HP Instruction Manual
Energy Menu – For EMS Energy Meters Only
Configuration:
There are several possibilities regarding the measurement of water or steam energy given the location
of the meter and the use of a second RTD. The table below summarizes the possibilities:
Fluid Meter Location Second RTD Measurement
Water “Sent” Flow Line “Return Flow Line Change in Energy
Water “Return” Flow Line “Sent” Flow Line Change in Energy
Water “Sent” Flow Line None Outgoing Energy
Steam “Sent” Flow Line “Return” Flow Line
(condensate)
Steam “Sent” Flow Line None Outgoing Energy
As above, you must properly configure the meter in the Energy Menu.
1. Loc in Sent Flow? Select Yes or No based on where the meter is located. Refer to the above
table
2. Heating System? Select Yes for a hot water system used for heating. Select No for a chilled
water system used for cooling. Always select Yes for a steam system.
3. % Returned. Select a number between 0% and 100%. Estimate the amount of water that returns.
It is usually 100%, or can be less than 100% if historical data shows the amount of makeup water
used. If a second RTD is not used, set to 0%. When 0% is selected, the energy calculation
represents the outgoing energy only (no return energy is subtracted). NOTE: the meter ships
from the factory assuming 0% return and has a 1000 ohm resistor installed in the RTD #2
wiring location. This needs to be removed if the meter is to be used in a manner other than
with 0% return and with the customer supplied RTD in its place.
Change in Energy
3-10 IM-24-HP
Page 50
Series 24-HP Instruction Manual Chapter 3 Operation
Fluid Menu
ENTER
Run Mode
Password
ENTER
Fluid
Menu
Flowing Fluid
Liquids >
Goyal-Dorais >
API 2540 >
Nat Gas AGA8 >
Real Gas >
Other Gas >
STD Temp (F)
xxxx
STD Press (PSIA)
xxxx
NORM Temp (C)
xxxx
xxxx
(
NORM Press
KPA
Use
keys to acc ess menus
< Liquid
Water
Ammonia
Chlorine
< Mole Weight >
)
xxxx
< Density
@
xxxx
< Rel. Density >
xxxx
< Gas
&
P Comp
Steam T
Steam T Comp
Air
Argon
Ammonia
CO
CO2
Helium
Hydrogen
Methane
Nitrogen
Oxygen
60F >
< CRIT PRESS >
xxxx
< K0 >
xxxx
< MoleFract N2 >
xxxx
< CRIT TEMP >
< K1 >
xxxx
<MoleFract CO2>
Steam T Comp
is for VT models
xxxx
< AL >
xxxx
xxxx
< CRIT Z >
xxxx
< BL
xxxx
<RefTemp(F)>
xxxx
< AL >
xxxx
< Ref Press(PSIA)
xxxx
< BL
xxxx
< Viscosity
< Spec Gravity >
xxxx
< Compress (Z) >
xxxx
xxxx
Use the Fluid Menu to configure the flow meter for use with common gases, liquids and steam. Your
flow meter is pre-programmed at the factory for your application’s process fluid.
Reference Richard W. Miller, Flow Measurement Engineering Handbook (Second Edition,
1989), page 2-67 for definition and use of the Goyal-Doraiswamy equation and page 2-68 for the
definition and use of the API 2540 equation. Also, see Appendix C for Fluid Calculation
equations.
The units of measurement used in the Fluid Menu are preset and are as follows:
Mole Weight = lb
Viscosity = cP (centipoise).
IM-24-HP 3-11
/(lbm·mol), CRIT PRESS = psia, CRIT TEMP = °R, Density = Kg/m3 and
m
Page 51
Chapter 3 Operation Series 24-HP Instruction Manual
Units Menu
Use the Units Menu to configure the flow meter with the desired units of measurement. (These
are global settings and determine what appears on all screens.
3-12 IM-24-HP
Page 52
Series 24-HP Instruction Manual Chapter 3 Operation
Time & Date Menu
ENTER
Run Mode
Password
ENTER
Time & Date
Menu
Set Time
xx:xx:xx
Set Date
xx/xx/xx
Use
keys to access menus
Use the Time and Date Menu to enter the correct time and date into the flow meter’s
memory. The parameters are used in the Run Mode and the alarm and system log
files.
Note: Time is displayed in AM/PM format, but military format is used to set the time.
For example, 1:00 PM is entered as 13:00:00 in the Set Time menu.
Example for Setting the Time
How to set the time to 12:00:00. You can check the time in th e Run Mode by pressing the ×Ø keys
until the Time & Date screen appears. Note: all outputs are disabled while using the Setup Menus.
1. Use ÕÖ keys to move to the Time and Date Menu.
2. Press Ø key until Set Time appears. Press
3. Press Ø key until 1 appears. Press Ö key to move the underline cursor to the next digit.
Press the Ø key until 2 appears. Continue sequence until all desired p arameters are entered. Press
4. Press EXIT to return to the Run Mode.
ENTER to return to the Time and Date Menu.
ENTER.
IM-24-HP 3-13
Page 53
Chapter 3 Operation Series 24-HP Instruction Manual
Diagnostics Menu
Use the Diagnostics Menu to simulate operation and review the system files. The system log files
contain time/date stamped messages including: power on, power off, programming time outs,
parameter faults, incorrect password entry and other various information relative to system
operation and programming.
The simulated inputs are for testing the meter to verify that the programming is correct. Simulated
vortex frequency allows you to enter any value for the sensor input in Hz. The meter will
calculate a flow rate based on the corresponding value and update all analog outputs (the
totalizer display and output is not affected by a simulated frequency). The simulated pressure
and temperature settings work the same way. The meter will output these new values and will use
them to calculate a new density for mass flow measurement. Note: when your diagnostic work is
complete, make sure to return the values to zero to allow the electronics to use the actual
transducer values.
If the meter display indicates a temperature or pressure fault, a substitute value can be entered to
allow flow calculations to continue at a fixed value until the source of the fault is identified and
corrected.
Use only the units listed above for simulated values. If different units are
displayed, the value must be converted into the units listed above, and the displayed
value will be automatically converted into the display units.
3-14 IM-24-HP
Page 54
Series 24-HP Instruction Manual Chapter 3 Operation
Calibration Menu
The Calibration Menu contains the calibration coefficients for the flow meter. These values
should by changed only by properly trained personnel. The Vortex Coef Ck and Low Flow
Cutoff are set at the factory. Consult the factory for help with these settings if the meter is
showing erratic flow rate.
IM-24-HP 3-15
Page 55
Chapter 3 Operation Series 24-HP Instruction Manual
Password Menu
ENTER
Run Mode
Password
ENTER
Password
Menu
Set Password
1234
Use
keys to access menus
Use the Password Menu to set or change the system password. The factory-set password
is 1234.
3-16 IM-24-HP
Page 56
Series 24-HP Instruction Manual Chapter 4 Troubleshooting & Repair
Chapter 4 Troubleshooting and Repair
Warning!
Before attempting any flow
meter repair, verify that the
line is not pressurized.
Always remove main power
before disassembling any
part of the mass flow meter.
f fi
G A
A1 A2
A3 A4
Kc It
*
Rtd1 = x.x
Rtd2 = x.x
Pe(v) = 0.0
Pv(v) = 0.0
Std = 1.000
Nrml = 1.000
Visc = xxxx
Adj. Filter
xx dB
Pulse Out Queue
xxxxxxxxxx
TOF
G f
Sig. Rev
Micro Rev
AD R T
F PT V
Spi Err
Rcv Sent
Not Present on
*
M22 Models
Kb
V
Re
Cp
Ck
Lvl
O
I
4-20(1),Zero
4- 20(1),FScale
4-20(2), Zero
4-20(3), Zero
Filter Control
Alarm (1) Test
Alarm (2) Test
Alarm (3) Test
Reynolds Corr.
Gain Control
Filter Control
High Pass Filt.
Factory Defaults
Meter Type
Config Code
Test Pulse Out
xxxx
xxxx
xxxx
4-20(2),
Fscale
xxxx
xxxx
4-20(3),
Fscale
xxxx
Filter Control
Low
Low
Low
0.33
1BFE
A2D Ref.
Resistor
2700
Pres Cal
Current
Hidden Diagnostics Menus
The menus shown to the left can be ac-
cessed using the password 16363, then
moving to the display that reads “Diagnostics Menu” and pressing ENTER (rather
than one of the arrow keys).
Use the right arrow key to move to the
second column. Press EXIT to move from
the second column back to the first, press
EXIT while in the first column to return to
the setup menus.
Caution: password 16363 will allow full
access to the configuration and should be
used carefully to avoid changes that can
adversely alter the function of the meter.
Each of the menus to the left will first be
defined followed by specific troubleshooting steps.
**
Press 9 C’s
More >
RTD 1
More >
RTD 2
More >
Min Delta H
1
Energy EMS Meters
**
Only
IM-24-HP 4-1
Page 57
Chapter 4 Troubleshooting & Repair Series 24-HP Instruction Manual
Column One Hidden Diagnostics Values
• f = vortex shedding frequency (Hz).
• fi = adaptive filter – should be approximately 25% higher than
the vortex shedding frequency, this is a low-pass filter. If the
meter is using the Filter Control (see below) in the manual
mode, fi will be displayed as fm.
• G = gain (applied to vortex signal amplitude). Gain defaults to
1.0 and can be changed using the Gain Control (see below).
• A = Amplitude of vortex signal in Volts rms.
• A1, A2, A3, A4 = A/D counts representing the vortex signal
amplitude. Each stage (A1-A4) cannot exceed 512. Beginning
with stage A1, the A/D counts increase as the flow increases.
When stage A1 reaches 512, it will shift to stage A2. This will
continue as the flow rate increases until all 4 stages read 512 at
high flow rates. Higher flow rates (stronger signal strength)
will result in more stages reading 512.
• Kc, It, Kb = profile equation (factory use only). Model M23
only
• V = calculated average pipe velocity (ft/sec).
• Re = calculated Reynolds number.
• RTD1 = resistance value of integral RTD in ohms.
• RTD2 = optional RTD resistance value same as above
• Pe(v) = pressure transducer excitation voltage
• Pv(v) = pressure transducer sense voltage.
• Stnd = density of fluid at standard conditions
• Nrml = density of fluid at normal conditions
• Viscosity = calculated viscosity of flowing fluid
• Ck = calculated Ck at current operating conditions. Ck is a va-
riable in the equation that relates signal strength, density, and
velocity for a given application. It is used for noise rejection
purposes. Ck directly controls the fi value (see above). If the
Ck is set too low (in the calibration menu), then the fi value
will be too low and the vortex signal will be rejected resulting
in zero flow rate being displayed. The calculated Ck valun in
this menu can be compared to the actual Ck setting in the calibration menu to help determine if the Ck setting is correct.
• Lvl = threshold level. If the Low Flow Cutoff in the calibra-
tion menu is set above this value, the meter will read zero flow.
The Lvl level can be checked at no flow. At no flow, the Lvl
4-2 IM-24-HP
Page 58
Series 24-HP Instruction Manual Chapter 4 Troubleshooting & Repair
must be below the Low Flow Cutoff setting or the meter will
have an output at no flow.
• Adj. Flilter = adjustable filter. Displays the filtering in deci-
bels. Normally reads zero. If this value is consistently -5 or
-10, for example, the Ck or density setting may be wrong.
• O,I = factory use only.
• Pulse Out Queue = Pulse output queue. This value will ac-
cumulate if the totalizer is accumulating faster than the pulse
output hardware can function. The queue will allow the pulses
to “catch up” later if the flow rate decreases. A better practice
is to slow down the totalizer pulse by increasing the value in
the (unit)/pulse setting in the totalizer menu.
• TOF, G, f = factory use only.
• Sig. Rev = Signal board hardware and firmware revision.
• Miro Rev = Microprocessor board hardware and firmware re-
vision.
• AD, R, T, F, PT, V = factory use only.
• SPR Err, Rcv, Sent = factory use only.
Column Two Hidden Diagnostics Values
• 4-20(1) Zero = Analog counts to calibrate zero on analog out-
put 1.
• 4-20(1) FScale = Analog counts to cal. full scale on analog
output 1.
• 4-20(2) Zero = Analog counts to calibrate zero on analog out-
put 2.
• 4-20(2) FScale = Analog counts to cal. full scale on analog
output 2.
• 4-20(3) Zero = Analog counts to calibrate zero on analog out-
put 3.
• 4-20(3) FScale = Analog counts to cal. full scale on analog
output 3.
• Alarm (1) Test = Used as a test to verify that the alarm circuit
is functioning. When low is selected the alarm will initiate a
low alarm on the output. When High is selected it will give a
high alarm on the output.
• Alarm (2) Test = Used as a test to verify that the alarm circuit
is functioning. When low is selected the alarm will initiate a
low alarm on the output. When High is selected it will give a
high alarm on the output.
IM-24-HP 4-3
Page 59
Chapter 4 Troubleshooting & Repair Series 24-HP Instruction Manual
• Alarm (3) Test = Used as a test to verify that the alarm circuit
is functioning. When low is selected the alarm will initiate a
low alarm on the output. When High is selected it will give a
high alarm on the output.
• Reynolds Corr. = Reynolds number correction for the flow
profile. Set to Enable for M23 insertion and set to Disable for
M22 inline.
• Gain Control = Manual gain control (factory use only). Leave
set at 1.
• Filter control = Manual filter control. This value can be
changed to any number to force the fi value to a constant. A
value of zero activates the automatic filter control which sets fi
at a level that floats above the f value.
• High Pass Filter = Filter setting – Factory use only
• Factory Defaults = Reset factory defaults. If you change this
to Yes and press Enter, all the factory configuration is lost and
you must reconfigure the entire program. Consult the factory
before performing this process, it is required only in very rare
cases.
• Meter Type = Insertion (M23) or Inline (M22) meter.
• Config Code = Factory Use Only
• Test Pulse Out = Force totalizer pulse. Set to Yes and press
enter to send one pulse. Very useful to test totalizer counting
equipment.
• A2D Ref. Resistor = Factory Use Only
• Factory Defaults = Reset to factory defaults. If you change
this to YES and press ENTER, all factory configuration is lost
and you must reconfigure the entire program. Consult the factory before performing this process, it is required only in very
rare cases.
• Force Tot Pulse = Force totalizer pulse. Set to YES and press
ENTER to send one pulse. Very useful to test totalizer counting equipment.
• Pressure 9Cs = Nine pressure coefficients unique to the pres-
sure transducer. Use the RIGHT ARROW to access all nine
coefficients.
• Pressure Cal Current = Calibration value for the electronics
and pressure transducer combination. Consult Factory for value.
• RTD1. Press the RIGHT ARROW to access:
o Ro = RTD resistance at 0°C (1000 ohms).
o A = RTD coefficient A (.0039083).
4-4 IM-24-HP
Page 60
Series 24-HP Instruction Manual Chapter 4 Troubleshooting & Repair
o B = RTD coefficient B (-5.775e-07).
o Slope = unique value for each set of electronics.
o Int = unique value for each set of electronics.
• RTD2 = Second RTD configuration, for special applications
only.
• Min. Delta H – Energy EMS meters only. Sets the deadband
for totalization to begin. Must be greater than this number (1
default) to initiate the totalizer.
Analog Output Calibration
To check the 4–20 mA circuit, connect a DVM in series with the
output loop. Select zero or full scale (from the second column of
the hidden diagnostics) and then actuate the enter key twice. This
action will cause the meter to output its 4 mA or 20 mA condition.
If the DVM indicates a current greater than ± 0.006 mA from 4 or
20, adjust the setting up or down until the output is calibrated.
Note: these settings are not for adjusting the output zero and span
to match a flow range, that function is located in the Output Menu.
IM-24-HP 4-5
Page 61
Chapter 4 Troubleshooting & Repair Series 24-HP Instruction Manual
Troubleshooting the Flow Meter
Symptom: Output at no Flow
1. The low flow cutoff is set too low. At no flow, go to the
first column of the hidden diagnostics menu and record the Lvl
value. The low flow cutoff must be set above this value.
2. Example: at no flow , Lvl = 25. Set the low flow cutoff in the
Calibration Menu to approximately 28 and the meter will no
longer read a flow rate at no flow.
Symptom: Erratic Output
1. The flow rate may be too low, just at the cutoff of the meter
range, and the flow cycles above and below the cutoff making
an erratic output. The meter range is stamped on the label on
the outside of the electronics enclosure cover (based on application conditions when the meter was ordered). Consult the
factory if necessary to confirm the meter range based on current operating conditions. It may be possible to lower the low
flow cutoff to increase the meter range. See the example above
for output at no flow, only this time the low flow cutoff is set
too high. You can lower this value to increase the meter range
as long as you do not create the output at no flow condition
previously described.
2. Mechanical installation may be incorrect. Verify the straight
run is adequate as described in Chapter 2. For in-line meters,
make sure the meter is not installed backwards and there are no
gaskets protruding into the flow stream. For insertion meters,
verify the insertion depth and flow direction.
3. The meter may be reacting to actual changes in the flow
stream. The output can be smoothed using a time constant.
The displayed values can be smoothed using the time constant
in the Display Menu. The analog outputs can be smoothed using the time constant in the Output Menu. A time constant of 1
will result in the change in value reaching 63% of its final value in one second. A time constant of 4 is 22%, 10 is 9.5% and
50 is 1.9% of the final value in one second. The time constant
equation is shown below (TC = Time Constant).
% change to final value
in one second
= 100 (1 – e
(-1/TC)
)
4. The
vortex coefficient Ck may be incorrectly set. The Ck is a value
in the equation used to determine if a frequency represents a
valid vortex signal given the fluid density and signal amplitude. In practice, the Ck value controls the adaptive filter, fi,
4-6 IM-24-HP
Page 62
Series 24-HP Instruction Manual Chapter 4 Troubleshooting & Repair
setting. During flow, view the f and fi values in the first column of the hidden diagnostics. The fi value should be approximately 10-20 % higher than the f value. If you raise the Ck
setting in the Calibration Menu, then the fi value will increase.
The fi is a low pass filter, so by increasing it or lowering it, you
can alter the range of frequencies that the meter will accept. If
the vortex signal is strong, the fi value will increase to a large
number – this is correct. Note: at high frequencies, the display
may not be able to display all the digits of the fi value (for example, 114 may be displayed and the actual value is 1140).
Symptom: No Output
1. For remote mounted electronics, carefully check all the wiring
connections in the remote mount junction box. There are 18
connections that must be correct, verify each color (black and
red), shield, and wire number.
2. Turn on the pressure and temperature display in the Display
Menu and verify that the pressure and temperature are correct.
3. Using ESD precautions and hazardous area precautions, re-
move the electronics enclosure window cover. Disconnect the
vortex sensor from the analog board (the analog board is the
first board below the microprocessor (display) board. Measure
the resistance from each outside pin to the meter ground - each
should be open. Measure the resistance from the center pin to
the meter ground – this should be grounded to the meter. With
the sensor still disconnected, go to the first column of the hidden diagnostics and display the vortex shedding frequency, f.
Hold a finger on the three exposed pins on the analog board.
The meter should read electrical noise, 60 Hz for example. If
all readings are correct, re-install vortex sensor wires.
4. Verify all meter configuration and troubleshooting steps pre-
viously described. There are many possible causes of this
problem, consult factory if necessary.
Symptom: Meter Displays Temperature Fault
1. For remote mounted electronics, carefully check all the wiring
connections in the remote mount junction box. There are 18
connections that must be correct, verify each color (black and
red), shield, and wire number.
2. Go to the first column of the hidden diagnostics and check the
resistance of the rtd1. It should be about 1080 ohms at room
temperature.
IM-24-HP 4-7
Page 63
Chapter 4 Troubleshooting & Repair Series 24-HP Instruction Manual
3. Using ESD precautions and hazardous area precautions, re-
move the electronics enclosure window cover. Disconnect the
temperature sensor (on the right) from the pressure / temperature board (the pressure / temperature board is the second
board below the microprocessor (display) board. Measure the
resistance across the outside pins of the temperature sensor
connector. It should read approximately 1080 ohms at room
temperature (higher resistance at higher temperatures). With
the temperature sensor still disconnected, measure the current
across the two outside pins of the exposed connector on the
temperature / pressure board. The current should be approximately .0002 amps. Now reconnect the temperature sensor
and measure the voltage across the two inside pins (insert
probes into the connector where the wires enter it). This value
should be approximately .2 volts (or .0002 amps times measured resistance, .216 volts at room temperature).
4. Consult factory with findings
Symptom: Meter Displays Pressure Fault
1. For remote mounted electronics, carefully check all the wiring
connections in the remote mount junction box. There are 18
connections that must be correct, verify each color (black and
red), shield, and wire number.
2. Using ESD precautions and hazardous area precautions, re-
move the electronics enclosure window cover. Disconnect the
pressure sensor (on the left) from the pressure / temperature
board (the pressure / temperature board is the second board below the microprocessor (display) board. Measure the resistance across the outside pins of the pressure sensor connector,
then across the inside pins. Both readings should be approximately 4000 ohms. With the pressure sensor still disconnected, measure the current across the two outside pins of the
exposed connector on the temperature / pressure board. The
current should be approximately .0004 amps.
3. Go to the first column of the hidden diagnostics and record the
Pe(V) and Pv(V) values and consult the factory with findings.
Electronics Assembly Replacement (All Meters)
The electronics boards are electrostatically sensitive. Wear a
grounding wrist strap and make sure to observe proper handling
precautions required for static-sensitive components.
4-8 IM-24-HP
Page 64
Series 24-HP Instruction Manual Chapter 4 Troubleshooting & Repair
Warning!
Before attempting
any flow meter re-
pair, verify that the
line is not pressu-
1. Turn off power to the unit.
2. Locate and loosen the small set screw which locks the larger
enclosure cover in place. Unscrew the cover to expose the electronics stack.
3. Locate the sensor harnesses which come up from the neck of
the flow meter and attaches to the circuit boards. Use small
pliers to pull the sensor wiring connectors off of the circuit
boards.
4. Locate and loosen the small set screw which locks the smaller
enclosure cover in place. Unscrew the cover to expose the field
wiring strip. Tag and remove the field wires.
5. Remove the screws that hold the black wiring label in place,
remove the label.
6. Locate the 4 Phillips head screws which are spaced at 90-
degrees around the terminal board. These screws hold the electronics stack in the enclosure. Loosen these screws (Note: that
these are captive screws, they will stay inside the enclosure).
7. Carefully remove the electronics stack from the opposite side
of the enclosure. If the electronics stack will not come out,
gently tap the terminal strip with the screw driver handle. This
will loosen the rubber sealing gasket on the other side of the
enclosure wall. Be careful that the stack does not hang up on
the loose sensor harnesses.
8. Repeat steps 1 through 6 in reverse order to install the new
electronics stack.
Pressure Sensor Replacement
1. For local mounted electronics, remove the electronics stack as
previously described. For remote mount electronics, remove
all wires and sensor connectors from the remote feedthrough
board in the junction box at the meter.
2. Loosen the three set screws at the center of the adapter be-
tween the meter and the enclosure.
3. Remove the top half of the adapter to expose the pressure
transducer.
4. Remove the transducer and replace it with the new one using
appropriate thread sealant.
IM-24-HP 4-9
Page 65
Chapter 4 Troubleshooting & Repair Series 24-HP Instruction Manual
5. Reassemble in reverse order.
Returning Equipment to the Factory
Before returning any Innova-Mass flow meter to the factory,
you must request a Return Material Authorization (RMA)
number. To obtain an RMA number and the correct shipping ad-
dress, contact Customer Service at:
800-866-0200 or 831-373-0200 in the USA,
When contacting Customer Service, be sure to have the meter serial number and model code.
When requesting further troubleshooting guidance, record the following values first:
f, fi, G, and A at no flow and during flow if possible.
Pressure, temperature, and flow rate
4-10 IM-24-HP
Page 66
Series 24-HP Instruction Manual Appendix A Specifications
Appendix A Product Specifications
Accuracy
Steam
±2% of
(2)
over a
±1.5% of
± 2° F
(± 1° C)
0.4% of
full scale
0.5% of
36
1076
8.1
244
(1)
(3)
(3)
(2)
81
2437
18
554
142
4270
32
970
Process
Variables
240 Series In-Line Meters 241 Series Insertion Meters
Liquids Gas & Steam Liquids Gas &
±1.5% of
rate
30:1 range
±1% of rate
over a 30:1
range
Mass Flow
Rate
Volumetric
Flow Rate
±1% of rate
over a 30:1
(3)
range
±0.7% of
rate over a
30:1
(3)
range
Temperature ± 2° F
(± 1° C)
Pressure 0.4% of
transducer
full scale
Density 0.3% of
reading
(± 1° C)
0.4% of
transducer
full scale
0.5% of
reading
(2)
over a
± 2° F
(3)
(3)
(2)
±1.5% of rate
over a 30:1
(3)
range
±1.2% of rate
over a 30:1
(3)
range
± 2° F
(± 1° C)
0.4% of
transducer full
scale
0.3% of
reading
rate
30:1 range
rate over a
30:1 range
transducer
reading
Notes: (1) Accuracies stated are for the total mass flow through the pipe.
(2) Over 50 to 100% of the pressure transducer’s full scale.
(3) Nominal rangeability is stated. Precise rangeability depends on fluid and pipe size.
Repeatability Mass Flow Rate: 0.2% of rate.
Volumetric Flow Rate: 0.1% of rate.
Temperature: ± 0.2° F (± 0.1° C).
Pressure: 0.05% of full scale.
Density: 0.1% of reading.
Stability Over 12 Months Mass Flow Rate: 0.2% of rate maximum.
Volumetric Flow Rate: Negligible error.
Temperature: ± 0.1° F (± 0.5° C) maximum.
Pressure: 0.1% of full scale maximum.
Density: 0.1% of reading maximum.
Response Time Adjustable from 1 to 100 seconds.
Material Capability Series 240 In-Line Flow Meter:
Any gas, liquid or steam compatible with 316L stainless steel, C276
hastelloy or A105 carbon steel. Not recommended for multi-phase fluids.
Series 241 Insertion Flow Meter:
Any gas, liquid or steam compatible with 316L stainless steel. Not
recommended for multi-phase fluids.
Flow Rates Typical mass flow ranges are given in the following table. Precise
flow depends on the fluid and pipe size. 241 insertion meters are
applicable to pipe sizes from 2 inch and above. Consult factory for
sizing program.
Water Minimum and Maximum Flow Rates
½-inch ¾-inch 1-inch 1.5-inch 2-inch 3-inch 4-inch 6-inch 8-inch
gpm 1
22
m3/hr .23 5 .3
1.3
40
9.1
2.2
67
0.5
15
5.5
166
1.3
38
9.2
276
2.1
63
21
618
4.7
140
IM-24-HP A-1
Page 67
Appendix A Specifications Series 24-HP Instruction Manual
Typical Air Minimum and Maximum Flow Rates (SCFM)
Air at 70
o
F
Nominal Pipe Size (in)
Pressure0.50.7511.523468
0 psig
100 psig
200 psig
300 psig
400 psig
500 psig
1.8 3 5 13 22 50 87 198 347
18 41 90 221 369 826 1437 3258 5708
5 9 15 38 63 141 245 555 972
138 325 704 1730 2890 6466 11254 25515 44698
7 13 21 52 86 193 335 761 1332
258 609 1322 3248 5427 12140 21131 47911 83931
8 15 25 63 104 234 407 922 1615
380 896 1944 4775 7978 17847 31064 70431 123375
10 18 29 72 120 269 467 1060 1857
502 1183 2568 6309 10542 23580 41043 93057 163000
11 20 33 80 134 300 521 1182 2071
624 1472 3195 7849 13115 28034 51063 115775 203000
Typical Air Minimum and Maximum Flow Rates (nm
Air at 20
3
o
C
/hr)
Nominal Pipe Size (mm)
Pressure 15 20 25 40 50 80 100 150 200
0 barg
5 barg
10 barg
15 barg
20 barg
30 barg
Linear Range Smart electronics corrects for lower flow down to a Reynolds number of 5,000. The Reynolds
359
28 66 142
71321
165 390 847
91729
304 716 1554
11 21 34
442 1044 2265
13 24 40
582 1373 2979
16 29 48
862 2034 4414 10843 18119 40529 70544 159942 280187
Liquids 30:1 1 foot per second velocity minimum
30 feet per second velocity maximum
Gases 30:1 10 feet per second velocity minimum
300 feet per second velocity maximum
21 36 79 138 313 549
350 584 1307 2275 5157 9034
52 87 194 337 764 1339
2080 3476 7775 13533 30682 53749
70 117 262 457 1035 1814
3819 6381 14273 24844 56329 98676
85 142 317 551 1250 2190
5565 9299 20801 36205 82087 143801
97 162 363 632 1434 2511
7318 12229 27354 47612 107949 189105
118 198 442 770 1745 3057
number is calculated using the fluid’s actual temperature and pressure monitored by the meter. Rangeability depends on the fluid,
process connections and pipe size. Consult factory for your application. Velocity rangeability under ideal conditions is as follows:
A-2 IM-24-HP
Page 68
Series 24-HP Instruction Manual Appendix A Specifications
Typical Saturated Steam Minimum and Maximum Flow Rates (lb/hr)
Nominal Pipe Size (in)
Pressure0.50.7511.523468
5 psig
100 psig
200 psig
300 psig
400 psig
500 psig
6.5 12 20 49 82 183 318 722 1264
52 122 265 650 1087 2431 4231 9594 16806
15 27 46 112 187 419 728 1652 2893
271 639 1386 3405 5690 12729 22156 50233 87998
20 37 62 151 253 565 983 2229 3905
493 1163 2525 6203 10365 23184 40354 91494 160279
24 45 74 182 304 680 1184 2685 4704
716 1688 3664 9000 15040 33642 58556 132763 232575
28 51 85 209 349 780 1358 3079 5393
941 2220 4816 11831 19770 44222 76971 174516 305717
31 57 95 233 389 870 1514 3433 6014
1170 2760 5988 14711 24582 54987 95710 217001 380148
Typical Saturated Steam Minimum and Maximum Flow Rates (kg/hr)
Nominal Pipe Size (mm)
Pressure0.50.7511.523468
0 barg
5 barg
10 barg
15 barg
20 barg
30 barg
Linear Range Smart electronics corrects for lower flow down to a Reynolds number of 5,000. The Reynolds
Process Fluid Pressure
3 5 8 19 32 72 126 286 500
18 42 91 224 375 838 1459 3309 5797
6 11 18 45 75 167 290 658 1153
95 224 485 1192 1992 4455 7754 17581 30799
8 15 24 59 99 222 387 877 1537
168 397 862 2118 3539 7915 13777 31237 54720
9 17 29 71 119 266 463 1050 1840
241 569 1236 3036 5073 11347 19750 44779 78444
11 20 33 81 136 304 529 1199 2100
314 742 1610 3956 6611 14787 25738 58355 102226
13 24 40 99 165 369 642 1455 2548
463 1092 2370 5822 9729 21763 37880 85884 150451
Liquids 30:1 1 foot per second velocity minimum
30 feet per second velocity maximum
Gases 30:1 10 feet per second velocity minimum
300 feet per second velocity maximum
Process
Connection
Flanged 316L SS, A105 Carbon Steel, C276 Hastelloy 150, 300, 600 lb, PN16,
Wafer 316L SS, A105 Carbon Steel, C276 Hastelloy 600 lb, PN64
number is calculated using the fluid’s actual temperature and pressure monitored by the meter. Rangeability depends on the fluid,
process connections and pipe size. Consult factory for your application. Velocity rangeability under ideal conditions is as follows:
240 Pressure Ratings
Material Rating
PN40, PN64
IM-24-HP A-3
Page 69
Appendix A Specifications Series 24-HP Instruction Manual
241 Pressure Ratings
Probe Seal Process
Compression
Fitting
2-inch 150 lb flange,
2-inch 300 lb flange,
2-inch 600 lb flange,
Packing Gland 2-inch MNPT 316L SS 50 psig PNPT
2-inch 150 lb flange,
2-inch 300 lb flange,
Packing Gland with
Removable Retractor
2-inch 150 lb flange,
2-inch 300 lb flange 316L SS ANSI 300 lb P300,
Packing Gland with
Permanent Retractor
2-inch 150 lb flange,
2-inch 300 lb flange,
2-inch 600 lb flange,
Pressure Transducer Ranges
Power Requirements 12 to 36 VDC, Loop Powered for the Volumetric option only
. 12 to 36 VDC, 100 mA for the Multiparameter Mass options
100 to 240 VAC, 50/60 Hz, 25 watts for the Multiparameter Mass op-
Display Alphanumeric 2 x 16 LCD digital display.
Six push-button switches (up, down, right, left, enter, exit) operable
Connection
2-inch MNPT
DN50 PN16
DN50 PN40
DN50 PN64
DN50 PN16
DN50 PN40
2-inch MNPT
DN50, PN16
2-inch MNPT
DN50 PN16
DN50, PN40
DN50 PN64
Pressure Sensor Ranges
Full Scale Operating Pres-
sure
psia (bara) psia (bara)
30 2 60 4
100 7 200 14
300 20 600 40
500 35 1000 70
1500 100 2500 175
Note: (1) To maximize accuracy, specify the lowest full scale operat-
ing pressure range for the application. To avoid damage, the
flow meter must never be subjected to pressure above the
over-range pressure shown above.
tiions
through explosion-proof window using hand-held magnet. Viewing
at 90-degree mounting intervals.
Material Rating Ordering
316L SS ANSI 600 lb CNPT
316L SS ANSI 150
316L SS ANSI 300
316L SS ANSI 600
316L SS 50 psig P150,
316L SS 50 psig P300,
316L SS ANSI 300 lb PM, RR
316L SS ANSI 150 lb P150,
316L SS ANSI 600 lb PNPTR
316L SS ANSI 150 lb P150R,
316L SS ANSI 300 lb P300R,
316L SS ANSI 600 lb P600R,
Maximum Over-Range Pressure
lb, PN16
lb, PN40
lb, PN64
(1)
, psia (bara)
Code
C150,
C16
C300,
C40
C600,
C64
P16
P40
P16,RR
P40, RR
P16R
P40R
P64R
A-4 IM-24-HP
Page 70
Series 24-HP Instruction Manual Appendix A Specifications
Pocess Fluid and Process Fluid:
Ambient Temperature Standard temperature sensor: –40° F to 500° F (–40° C to 260° C).
High temperature sensor: to 750° F ( to 400° C).
Ambient:
Operating: –5° F to 140° F (–20° C to 60° C).
Storage: –40° F to 150° F (–40° C to 65° C).
0-98% relative humidity, non-condensing conditions.
Output Signals
Communications: HART, MODBUS, RS485
Multiparameter Meter: up to three field rangeable linear 4-20 mA
Pulse:Pulse output for totalization is a 50-millisecond duration pulse
Note: (1) All outputs are optically isolated and require external power
Alarms Up to three programmable solid-state relays for high, low or window
Totalizer Based on user-determined flow units, six significant figures in scien-
(1)
Analog: Volumetric Meter: field rangeable linear 4-20 mA output
signal (1000 Ohms maximum loop resistance) selected by user for
mass flow rate or volumetric flow rate.
output signals (1000 Ohms maximum loop resistance) selected
from the five parameters–mass flow rate, volumetric flow rate, temperature, pressure and density.
operating a solid-state relay capable of switching 40 VDC, 40 mA maximum.
for operation.
alarms capable of switching 40 VDC, 40 mA maximum.
tific notation. Total stored in non-volatile memory.
Wetted Materials Series 240 In-Line Flow Meter:
316L stainless steel standard.
C276 hastelloy or A105 carbon steel optional.
Series 241 Insertion Flow Meter:
316L stainless steel standard.
Teflon
Graphite packing gland above 500° F (260° C).
Enclosure NEMA 4X cast enclosure.
Electrical Ports Two 3/4-inch female NPT ports.
Mounting Connections Series 240: Wafer, 150, 300, 600 lb ANSI flange, PN16, PN40,
Series 241 Permanent installation: 2-inch MNPT; 150, 300, 600 lb
Series 241 Hot Tap
Note: (1) Removable under line pressure.
Mounting Position Series 240 In-Line Flow Meter: No effect.
Series 241 Insertion Flow Meter: Meter must be perpendicular with-
Certifications Construction Inspection ( ANSI/ASME B31.3).
Materials (NACE MR-01-75[90]).
CE and FM approved.
CSA, CENELEC approval pending.
FM approvals:
Class I, Division 1, Groups B, C, & D, T6 at Tamb = 60°C
Class II/III, Division 1, Groups E, F, & G
IP66, NEMA 4X
PN64 flange.
ANSI flange, PN16, PN40, PN64 flange with compression fitting
probe seal.
ANSI flange, PN16, PN40, PN64 flange and optional retractor with
packing gland probe seal.
in ± 5° of the pipe centerline.
®
packing gland below 500° F (260° C).
(1)
Installation: 2-inch MNPT; 150, 300, 600 lb
IM-24-HP A-5
Page 71
Series 24-HP Instruction Manual Appendix B Glossary
Appendix B Glossary
A B C D
A Cross sectional area.
ACFM Actual Cubic Feet Per Minute (volumetric flow rate).
ASME American Society of Mechanical Engineers.
Bluff Body A non-streamlined body placed into a flow stream to
create vortices. Also called a Shedder Bar.
BTU British Thermal Unit, an energy measurement.
Cenelec European Electrical Code.
Compressibility A factor used to correct for the non-ideal changes in
Factor a fluid’s density due to changes in temperature
and/or pressure.
CSA Canadian Standards Association.
d Width of a bluff body or shedder bar.
D Diameter of a flow channel.
E F G H
f Frequency of vortices generated in a vortex flow
meter, usually in Hz.
Flow Channel A pipe, duct, stack, or channel containing flowing fluid.
Flow Profile A map of the fluid velocity vector (usually non-
uniform) in a cross-sectional plane of a flow channel
(usually along a diameter).
FM Factory Mutual.
Ft Foot, 12 inches, a measure of length.
Ft^2 Square feet, measure of area.
Ft^3 Cubic feet, measure of volume.
GPM Gallons Per Minute.
Hz Hertz, cycles per second.
IM-24-HP B-1
Page 72
Appendix B Glossary Series 24-HP Instruction Manual
I J K L
In-Line Flow Meter A flow meter which includes a short section of piping
which is put in-line with the user’s piping.
Insertion Flow Meter A flow meter which is inserted into a hole in the us-
er’s pipeline.
Joule A unit of energy equal to one watt for one second. Al-
so equal to a Newton-meter.
LCD Liquid crystal display.
M N O P
m Mass flow rate.
mA Milli-amp, one thousandth of an ampere of current.
μ Viscosity, a measure of a fluid’s resistance to shear stress.
Honey has high viscosity, alcohol has low viscosity.
ΔP Permanent pressure loss.
P Line pressure (psia or bar absolute).
ρ
The density of a fluid at the actual temperature and
act
pressure operating conditions.
ρ
The density of a fluid at standard conditions (usually
std
14.7 psia and 20° C).
Permanent Unrecoverable drop in pressure.
Pressure Loss
Piezoelectric Crystal A material which generates an electrical charge
when the material is put under stress.
PRTD An resistance temperature detector (RTD) with plati-
num as its element. Used because of high stability.
psia Pounds per square inch absolute
(equals psig + atmospheric pressure). Atmospheric
pressure is typically 14.696 psi at sea level.
psig Pounds per square inch gauge.
P
Liquid vapor pressure at flowing conditions (psia or
V
bar absolute).
B-2 IM-24-HP
Page 73
Series 24-HP Instruction Manual Appendix B Glossary
Q R S T
Q Flow rate, usually volumetric.
Rangeability Highest measurable flow rate divided by the lowest
measurable flow rate.
Reynolds Number A dimensionless number equal to the density of a fluid
or Re times the velocity of the fluid times the diameter of the
fluid channel, divided by the fluid viscosity (i.e., Re =
ρVD/μ). The Reynolds number is an important num-
ber for vortex flow meters because it is used to deter-
mine the minimum measurable flow rate. It is the ratio
of the inertial forces to the viscous forces in a flowing
fluid.
RTD Resistance temperature detector, a sensor whose
resistance increases as the temperature rises.
scfm Standard cubic feet per minute (flow rate converted
to standard conditions, usually 14.7 psia and 20° C).
Shedder Bar A non-streamlined body placed into a flow stream to
create vortices. Also called a Bluff Body.
Strouhal Number A dimensionless number equal to the frequency
or St of vortices created by a bluff body times the width of
the bluff body divided by the velocity of the flowing
fluid (i.e., St = fd/V). This is an important number for
vortex flow meters because it relates the vortex fre-
quency to the fluid velocity.
Totalizer An electronic counter which records the total accu-
mulated flow over a certain range of time.
Traverse The act of moving a measuring point across the
width of a flow channel.
U V W X Y Z
Uncertainty The closeness of agreement between the result of a
measurement and the true value of the measurement.
V Velocity or voltage.
VAC Volts, alternating current.
VDC Volts, direct current.
VORTEX An eddy of fluid.
IM-24-HP B-3
Page 74
Series 24-HP Instruction Manual Appendix C Fluid Calculations
•
Appendix C Fluid Calculations
Calculations for Steam T & P
When “Steam T & P” is selected in the “Real Gas” selection of the Fluid
Menu, the calculations are based on the equations below.
Density
The density of steam is calculated from the formula given by Keenan and
Keys. The given equation is for the volume of the steam.
T
v +
=
04.555.4
p
0
1
2
g
3
Where tau is 1/ temperature in Kelvin.
The density can be found from 1/(v/ standard density of water).
B
2401200
2
80870
τ
1062.264189.1
τ
⋅⋅−=B
106246.1546.82)(
102697.121828.0)(
ττ
⋅⋅−=g
−
10768.610635.3)(
33
25
τττ
⋅⋅−⋅=g
25
24644
ττ
⋅⋅−⋅=
3130
1212
)()()( pgBpgBpgBBB ⋅−⋅+⋅+=
ττττττ
Viscosity
The viscosity is based on an equation given by Keenan and Keys.
5
−
T
10501.1
η
poise
)(
Where T is the temperature in Kelvin
⋅
=
+
T
/8.4461
IM-24-HP C-1
Page 75
Appendix C Fluid Calculations Series 24-HP Instruction Manual
μ
μ
μ
Calculations for Gas (“Real Gas” and “Other Gas”)
Use this formula to determine the settings for “Real Gas; Gas” selections
and “Other Gas” selections entered in the Fluid Menu. The calculations
for gas were taken from Richard W. Miller, Flow Measurement Engi-
neering Handbook (Second Edition, 1989).
Density
The density for real gases is calculated from the equation:
pGM
fAirw
,
=
ρ
Where G is the specific gravity, Mw is the molecular weight of
air, pf is the flowing pressure, Z is flowing compressibility, Ro is
the universal gas constant, and T is the flowing temperature.
The specific gravity, and Ro are known and are stored in a table used by
the Vortex meter.
The hard coefficient to find is the compressibility, Z. Z is found using the
Redlich-Kwong Equation (Miller page 2-18).
The Redlich-Kwong Equation uses the reduced temperature and pressure
to calculate the compressibility factor. The equations are non linear and
an iterative solution is used. The Vortex program uses Newton’s Method
on the Redlich-Kwong equations to iteratively find the compressibility
factor. The critical temperature and pressure used in the Redlich-Kwong
equation are stored in the fluid data table with the other coefficients.
TRZ
ff
0
Viscosity
The viscosity for real gases is calculated using the exponential equation
for two known viscosities. The equation is:
μ
Where a and n are found from two known viscosities at
two temperatures.
n
and
a
n
aT=
KcP
])/()ln[(
cPcP
=
)(
1
cP
=
n
T
1
K
12
)/ln(
TT
12
KK
C-2 IM-24-HP
Page 76
Series 24-HP Instruction Manual Appendix C Fluid Calculations
μ
μ
μ
Calculations for Liquid
Use this formula to determine the settings for “Goyal-Dorais” selections
and “Other Liquid” selections entered in the Fluid Menu. The liquid calculations were taken from Richard W. Miller, Flow Measurement Engi-
neering Handbook (Second Edition, 1989).
Density
The liquid density is found using the Goyal-Doraiswamy Equation. Goyal-Doraiswamy uses the critical compressibility, critical pressure and
critical temperature, along with the molecular weight to find the density.
The equation for specific gravity is:
T
⎛
Mwp
G 01102.0
c
F
T
008.0
⎜
⎜
c
⎝
−=
773.0
Z
c
The specific gravity can then be converted into density.
Viscosity
The liquid viscosity is found by Andrade's equation. This uses two viscosities at different temperatures to extrapolate the viscosity.
Andrade's equation:
B
A
μ
L
To find A and B
B−=
L
L
exp=
T
R
deg
TT
RR
212deg1deg
TT
1deg2deg
RR
⎞
f
⎟
⎟
T
C
⎠
)/ln(
A
=
L
)/exp(
TB
1deg1RL
The temperatures are all in degrees Rankin. Do not believe the subscript
R means they are reduced temperatures.
IM-24-HP C-3
Page 77
Series24-HP Instruction Manual Appendix D HART Commands
Online Menu
1 Device Setup
2 Process Variables
3 PV is
4 PV
5 AO1 Out
6 PV % rnge
7 Alrm Status
8 Diagnostics
9 Calibration Review
1 Display Unit
2 Analog Output
3 Meter Display
4 Alarm Setup
5 Totalizer
6 Fluid Menu
7 Device Menu
8 Diagnostics
9 Sensor Cal
Review
1 Mass Flo
2 Vol
3 Temp
4 Press
5 Dens
6 Totl
Appendix D HART Commands with DD Menu
K factor, Ck
1 Mass Flo Unit
2 Vol Unit
3 Temp Unit
4 Line Press Unit
5 Dens Unit
6 Totalizer Units
7 Std & Norm Cond
1 Fix Analog Output
2 Trim Analog Output
3 Configure AO1
4 PV is
5 PV AO
6 PV % rnge
7 Configure AO2
8 SV is
9 SV AO
SV % rnge
Configure AO3
TV is
TV AO
TV % rnge
1 Disp Cycle
2 Disp Digits
3 Disp Damping
4 Disp Show/Hide
1 Alarm Status
2 Alarm 1 Setup
3 Alarm 2 Setup
4 Alarm 3 Setup
5 Records in Log
6 Read Alarm Log
7 Alarm Log Clear
1 Total
2 Totalize
3 Amount/Pulse
4 Clear Totalizer
1 Fluid
Real Gas
Other Gas
Liquid
Goyal-Dorais
API 2540
Nat Gas
1 Date
2 h
3 min
4 s
5 Password
6 Line Size
7 Dev ID
8 Tag
9 Descriptor
Message
Final assy num
Poll adr
Num req preams
Master reset
1 Vortex Diag
2 Press Diag
3 Temp Diag
4 Vel
5 Temp
6 Press
7 Records in Log
8 Read System Log
9 System Log Clear
1 Norm Temp
2 Norm Press
3 Std Temp
4 Std Press
1 Alrm 1 var
2 Alrm 1 typ
3 Alrm 1 set pt
1 Alrm 2 var
2 Alrm 2 typ
3 Alrm 2 set pt
1 Alrm 3 var
2 Alrm 3 typ
3 Alrm 3 set pt
Steam, Air, Argon, Ammonia, CO,
CO2, Helium, Hydrogen, Methane,
Nitrogen, Oxygen
Specific Gravity, Compress, Viscosity
Water, Ammonia, Chlorine
Mol Wt, Crit Press, Crit Temp, Comp
Degrees API, API K0, API K1,
Viscosity Ceof A1, Viscosity Coef B1
AGA Ref Temp, AGA Ref Press,
Relative Density, Mole Fract N2,
Mole Fract CO2
1 Vtx Freq
2 Sim Vtx Freq
3 Vtx AtoD
4 Filter Set
5 Gain Set
6 Re
7 Vel
8 Max Vel
1 Press
2 Sim Press
3 Excite
4 Excite AtoD
5 Sense
6 Sense AtoD
7 Max Press
1 Temp
2 Sim Temp
3 RTD1
4 RTD1 AtoD
5 Max Temp
1 PV is
2 PV AO
3 PV
4 PV % rnge
5 Apply Values
6 PV Rnge Unit
7 PV LRV
8 PV URV
9 PV AO1 Lo End Pt
PV AO1 Hi End Pt
PV AO1 Added Damp
1 SV is
2 SV AO
3 SV
4 SV % rnge
5 Apply Values
6 SV Rnge Unit
7 SV LRV
8 SV URV
9 SV AO2 Lo End Pt
SV AO2 Hi End Pt
SV AO2 Added Damp
1 TV is
2 TV AO
3 TV
4 TV % rnge
5 Apply Values
6 TV Rnge Unit
7 TV LRV
8 TV URV
9 TV AO3 Lo End Pt
TV AO3 Hi End Pt
TV AO3 Added Damp
1 Calibration Review
2 Vortex Sensor
3 Vortex Cal
4 Press Sensor
5 Press Cal
6 Temp Sensor
7 Temp Cal
Lo Flo Cutoff
RTD1 Slope
RTD1 Intercept
RTD1 Ro
RTD1 alpha
RTD1 beta
RTD2 Slope
RTD2 Intercept
RTD2 Ro
RTD2 alpha
RTD2 beta
Excite Slope
Excite Interc e p t
Snsr Slopt
Snsr Intercept
Pcal B00, Pcal B01
Pcal B02, Pcal B10
Pcal B11, Pcal B12
Pcal B20, Pcal B21
Pcal B22
Board Current
Cal Current
1 USL
2 LSL
3 Min Span
4 Damp
5 Snsr s/n
6 Sim Vtx
7 Max Vel
8 Vortex Diag
1 K Factor
2 Ck Value
3 Lo Flo Cutoff
1 Pres snsr unit
2 USL
3 LSL
4 Min Span
5 Damp
6 Snsr s/n
7 Simulate
8 Maximum
9 Press Diag
1 Exicte Slope
2 Excite Intercept
3 Snsr Slope
4 Snsr Intercept
5 Pcal B00
6 Pcal B01
7 Pcal B02
8 Pcal B10
9 Pcal B11
Pcal B12
Pcal B20
Pcal B21
Pcal B22
Board Current
Cal Current
1 Temp Unit
2 USL
3 LSL
4 Min Span
5 Damp
6 Snsr s/n
7 Simulate
8 Maximum
9 Temp Diag
1 RTD1 Slope
2 RTD1 Intercept
3 RTD1 Ro
4 RTD1 alpha
5 RTD1 beta
6 RTD2 Slope
7 RTD2 Intercept
8 RTD2 Ro
9 RTD2 alpha
RTD2 beta
1 Vtx Freq
2 Sim Vtx Freq
3 Vtx AtoD
4 Filter Set
5 Gain Set
6 Re
7 Vel
8 Max Vel
1 Press
2 Sim Press
3 Excite
4 Excite AtoD
5 Sense
6 Sense AtoD
7 Max Press
1 Temp
2 Sim Temp
3 RTD1
4 RTD1 AtoD
5 Max Temp
IM-24-HP D-1
Page 78
Appendix D HART Commands Series24-HP Instruction Manual
Appendix D HART Commands without DD Menu
Online Menu
1 Device Setup
2 PV
3 PV AO
1 Process Variables
2 Diag/Service
3 Basic Setup
1 Snsr
2 AI % Rnge
3 AO1
1 Test Device
2 Loop Test
3 Calibration
4 D/A Trim
1 Tag
2 PV unit
3 Range Values
4 Device Information
5 PV Xfer fnctn
6 PV Damp
1 4 mA
2 20 mA
3 Other
4 End
1 Apply Values
2 Enter Values
1 PV LRV
2 PV URV
3 PV LSL
4 PV USL
1 Distributor
2 Model
3 Dev id
4 Tag
5 Date
6 Write Protect
7 Descriptor
8 Message
9 PV snsr s/n
Final assy #
Revision #'s
1 4 mA
2 20 mA
3 Exit
1 PV LRV
2 PV URV
3 PV USL
4 PV LSL
1 Universal Rev
2 Fld dev Rev
3 Software Rev
4 PV LRV
5 URV
4 Detailed Setup
5 Review
1 PV LRV
2 PV URV
1 Sensors
2 Signal Condition
3 Output Condition
4 Device Information
1 PV
2 PV Sensor Unit
3 Sensor information
1 Snsr Damp
2 URV
3 AI LRV
4 Xfer Fnctn
5 AI % rnge
1 Analog Output
2 HART Output
1 Distributor
2 Model
3 Dev id
4 Tag
5 Date
6 Write Protect
7 Descriptor
8 Message
9 PV snsr s/n
Final assy #
Revision #'s
PV LSL, PV USL, PV Min span
1 PV LRV
2 PV URV
1 AO1
2 AO alarm typ
3 Loop test
4 D/A trim
5 Scaled D/A trim
1 Poll addr
2 Num req. preams
3 Burst mode
4 Burst option
1 Universal Rev
2 Fld dev Rev
3 Software Rev
1 4 mA
2 20 mA
3 Other
4 End
D-2 IM-24-HP
Page 79
Appendix E MODBUS Commands Series 24-HP Instruction Manual
Appendix E Modbus Communication
Applicable Flow Meter Models
Sierra Innova-Mass® Mass Flow Meters, Models 240 and 241 with Modbus communication
protocol and firmware version 3.00.02 and above.
Overview
This document describes the preliminary implementation of the Modbus communication protocol
for use in monitoring common process variables in the Sierra Innova-Mass® Vortex flow meter.
The physical layer utilizes the half-duplex RS-485 port, and the Modbus protocol.
Reference Documents
The following documents are available online from www.modbus.org.
Modbus Application Protocol Specification V1.1
Modbus Over Serial Line Specification & Implementation Guide V1.0
Modicon Modbus Protocol Reference Guide PI–MBUS–300 Rev. J
Menu Items
The following menu items are in the Output Menu and allow selection and control of the
Modbus communication protocol.
Address
When the Modbus protocol is selected, the Modbus address is equal to the user programmable device address if it is in the range 1…247, in accordance with the Modbus specification. If the device address is zero or is greater than 247, then the Modbus address is internally set to 1.
Comm Protocol
The Comm Protocol menu allows selection of “Modbus RTU Even,” “Modbus RTU Odd,” or
“Modbus RTU None2,” or “Modbus RTU None1,” (non-standard Modbus) with Even, Odd and
None referring to the parity selection. When even or odd parity is selected, the unit is configured
for 8 data bits, 1 parity bit and 1 stop bit; with no parity, the number of stop bits is 1 (nonstandard) or 2. When changing the protocol, the change is made as soon as the Enter key is
pressed.
IM-24-HP E-1
Page 80
Appendix E MODBUS Commands Series 24-HP Instruction Manual
Modbus Units
The Modbus Units menu is to control what units, where applicable,
the meter’s variables will be displayed in. Internal – these are the
base units of the meter, °F , psia, lbm/sec , ft3/sec, Btu/sec , lbm/ft
3
Display – variables are displayed in user selected display unit.
Modbus Order
The byte order within registers and the order in which multiple registers containing floating point or long integer data are transmitted may be changed with this
menu item. According to the Modbus specification, the most significant byte of a
register is transmitted first, followed by the least significant byte. The Modbus
specification does not prescribe the order in which registers are transmitted
when multiple registers represent values longer than 16 bits. Using this menu
item, the order in which registers representing floating point or long integer data
and/or the byte order within the registers may be reversed for compatibility with
some PLCs and PC software.
The following four selections are available in this menu; when selecting an
item, the protocol is changed immediately without having to press the Enter
key.
0-1:2-3 Most significant register first, most significant byte first (default)
2-3:0-1 Least significant register first, most significant byte first
1-0:3-2 Most significant register first, least significant byte first
3-2:1-0 Least significant register first, least significant byte first
Note that all of the registers are affected by the byte order, including strings and registers representing 16-bit integers; the register
order only affects the order of those registers representing 32-bit
floating point and long integer data, but does not affect single 16bit integers or strings.
Modbus Protocol
The Modbus RTU protocol is supported in this implementation. Supported baud
rates are 1200, 2400, 4800, 9600, 19200, 38400, 57600, and 115200. The default baud rate is 19200 baud. Depending upon the Modbus protocol selected,
data are transmitted in 8-bit data frames with even or odd parity and 1 stop bit, or
no parity and 2 or 1 (non-standard) stop bits.
The current Modbus protocol specification does not define register usage, but
E-2 IM-24-HP
Page 81
Series 24-HP Instruction Manual Appendix E MODBUS Commands
there is an informal register numbering convention derived from the original (now
obsolete) Modicon Modbus protocol specification, and used by many vendors of
Modbus capable products.
Registers Usage Valid Function Codes
00001–09999 Read/write bits ("coils") 01 (read coils) 05 (write single coil)
15 (write multiple coils)
10001–19999 Read-only bits ("discrete inputs") 02 (read discrete inputs)
30001–39999 Read-only 16 bit registers ("input regis-
ters"), IEEE 754 floating point register
pairs, arbitrary length strings encoded as
two ASCII characters per 16-bit register
03 (read holding registers) 04 (read
input registers)
40001–49999 Read/write 16-bit registers ("holding regis-
ters"), IEEE 754 floating point register
pairs, arbitrary length strings encoded as
two ASCII characters per 16-bit register
Each range of register numbers maps to a unique range of addresses that are determined by the function code and the register
number. The address is equal to the least significant four digits of
the register number minus one, as shown in the following table.
Registers Function Codes Data Type and Address Range
00001-09999 01, 05, 15 Read/write bits 0000-9998
10001-19999 02 Read-only bits 0000-9999
30001-39999 03, 04 Read-only 16-bit registers 0000-9998
40001-49999 03, 06, 16 Read/write 16-bit registers 0000-9998
Register Definitions
The meter serial number and those variables that are commonly
monitored (mass, volume and energy flow rates, total, pressure,
temperature, density, viscosity, Reynolds number, and diagnostic
variables such as frequency, velocity, gain, amplitude and filter setting) are accessible via the Modbus protocol. Long integer and
floating point numbers are accessed as pairs of 16-bit registers in
the register order selected in the Modbus Order menu. Floating
point numbers are formatted as single precision IEEE 754 floating
point values.
03 (read holding registers) 06 (write
single register) 16 (write multiple
registers)
The flow rate, temperature, pressure, and density variables may
be accessed as either the flow meter internal base units or in the
user-programmed display units, which is determined by the pro-
IM-24-HP E-3
Page 82
Appendix E MODBUS Commands Series 24-HP Instruction Manual
gramming Output Menu’s “Modbus Units” item. The display units
strings may be examined by accessing their associated registers.
Each of these units string registers contain 2 characters of the
string, and the strings may be 2 to 12 characters in length with
unused characters set to zero. Note that the byte order affects the
order in which the strings are transmitted. If the Modbus Order
menu (see page 2) is set to 0-1:2-3 or 2-3:0-1, then the characters
are transmitted in the correct order; if set to 1-0:3-2 or 3-2:1-0,
then each pair of characters will be transmitted in reverse order.
Registers Variable Data type Units Function
code
Addresses
65100-65101 Serial number unsigned long — 03, 04
30525-30526 Totalizer unsigned long display units* 03, 04 524-525
32037-32042 Totalizer units string — 03, 04 2036-2041
30009-30010 Mass flow float display units* 03, 04 8-9
30007-30008 Volume flow float display units* 03, 04 6-7
30005-30006 Pressure float display units* 03, 04 4-5
30001-30002 Temperature float display units* 03, 04 0-1
30029-30030 Velocity float ft/sec 03, 04 28-29
30015-30016 Density float display units* 03, 04 14-15
30013-30014 Viscosity float cP 03, 04 12-13
30031-30032 Reynolds number float — 03, 04 30-31
30025-30026 Vortex frequency float Hz 03, 04 24-25
34532 Gain char — 03, 04 4531
30085-30086 Vortex amplitude float Vrms 03, 04 84-85
30027-30028 Filter setting float Hz 03, 04 26-27
The following registers are available with the energy meter firm-
ware:
Registers Variable Data type Units Function
code
Addresses
30527-30528 Totalizer #2 unsigned long display units* 03, 04 526-527
32043-32048 Totalizer #2 units string — 03, 04 2042-2047
30003-30004 Temperature #2 float display units* 03, 04 2-3
30011-30012 Energy flow float display units* 03, 04 10-11
E-4 IM-24-HP
Page 83
Series 24-HP Instruction Manual Appendix E MODBUS Commands
The following registers contain the display units strings:
Registers Variable Data type Units Function code Addresses
32007-32012 Volume flow units string — 03, 04 2006-2011
32001-32006 Mass flow units string — 03, 04 2000-2005
32025-32030 Temperature units string — 03, 04 2024-2029
32019-32024 Pressure units string
32031-32036 Density units string — 03, 04 2030-2035
32013-32017 Energy flow units string — 03, 04 2012-2017
—
03, 04 2018-2023
Function codes 03 (read holding registers) and 04 (read input registers) are the only codes supported for reading these registers, and
function codes for writing holding registers are not implemented.
We recommend that the floating point and long integer registers be
read in a single operation with the number of registers being a multiple of two. If these data are read in two separate operations, each
reading a single 16-bit register, then the value will likely be invalid.
The floating point registers with values in display units are scaled
to the same units as are displayed, but are instantaneous values
that are not smoothed. If display smoothing is enabled (non-zero
value entered in the Display TC item in the Display Menu), then
the register values will not agree exactly with the displayed values.
Exception Status Definitions
The Read Exception Status command (function code 07) returns the exception
status byte, which is defined as follows. This byte may be cleared by setting “coil”
register #00003 (function code 5, address 2, data = 0xff00).
Bit(s) Definition
0-1 Byte order (see Modbus Order on page 2)
2 Temperature sensor fault
3 Pressure sensor fault
4 A/D converter fault
5 Period overflow
6 Pulse overflow
7 Configuration changed
0 = 3-2:1-0 1 = 2-3:0-1
2 = 1-0:3-2 3 = 0-1:2-3
Discrete Input Definitions
IM-24-HP E-5
Page 84
Appendix E MODBUS Commands Series 24-HP Instruction Manual
The status of the three alarms may be monitored via the Modbus Read Discrete
Input command (function code 02). The value returned indicates the state of the
alarm, and will be 1 only if the alarm is enabled and active. A zero value is
transmitted for alarms that are either disabled or inactive,
Registers Variable Function Code Address
10001 Alarm #1 state 02 0
10002 Alarm #2 state 02 1
10003 Alarm #3 state 02 2
Control Register Definitions
The only writeable registers in this implementation are the Reset
Exception Status, Reset Meter and Reset Totalizer functions, which
are implemented as ”coils” which may be written with the Write Single Coil command (function code 05) to address 8 through 10, respectively, (register #00009 through #00011). The value sent with
this command must be either 0x0000 or 0xff00, or the meter will respond with an error message; the totalizer will be reset or exception
status cleared only with a value of 0xff00.
Error Responses
If an error is detected in the message received by the unit, the function code
in the response is the received function code with the most significant bit set,
Exception
Code Description
01 Invalid function code — function code not supported by device
02 Invalid data address — address defined by the start address and number of registers
03 Invalid data value — number of registers = 0 or >125 or incorrect data with the Write
is out of range
Single Coil command
and the data field will contain the exception code byte, as follows:
If the first byte of a message is not equal to the unit’s Modbus address, if the unit detects a parity error in any character in the received message (with even or odd parity enabled), or if the message CRC is incorrect, the unit will not respond.
Command Message Format
E-6 IM-24-HP
Page 85
Series 24-HP Instruction Manual Appendix E MODBUS Commands
The start address is equal to the desired first register number minus one. The
addresses derived from the start address and the number of registers must all be
mapped to valid defined registers, or an invalid data address exception will occur.
Normal Response Message Format
Exception Response Message Format
Examples
Read the exception status byte from the device with address 1:
01 07 41 E2
01 Device address
07 Function code, 04 = read exception status
A typical response from the device is as follows:
01 07 03 62 31
01 Device address
07 Function code
03 Exception status byte
62 31 CRC
Request the first 12 registers from device with address 1:
01 04 00 00 00 0C F0 0F
01 Device address
04 Function code, 04 = read input register
00 00 Starting address
00 0C Number of registers = 12
F0 0F CRC
A typical response from the device is as follows: *note these are the older regis-
IM-24-HP E-7
Page 86
Appendix E MODBUS Commands Series 24-HP Instruction Manual
ter definitions
01 04 18 00 00 03 E8 00 00 7A 02 6C 62 00 00 41 BA 87 F2 3E BF FC 6F 42
12 EC 8B 4D D1
01 Device address
04 Function code
18 Number of data bytes = 24
00 00 03 E8 Serial number = 1000 (unsigned long)
00 00 7A 02 Totalizer = 31234 lbm (unsigned long)
6C 62 00 00 Totalizer units = “lb” (string, unused characters are 0)
41 BA 87 F2 Mass flow rate = 23.3164 lbm/sec (float)
3E BF FC 6F Volume flow rate = 0.3750 ft
42 12 EC 8B Pressure = 36.731 psia (float)
4D D1 CRC
An attempt to read register(s) that don’t exist
01 04 00 00 00 50 F1 D2
01 Device address
04 Function code 4 = read input register
00 00 Starting address
00 50 Number of registers = 80
F0 36 CRC
results in an error response as follows:
3
/sec (float)
01 84 02 C2 C1
01 Device address
84 Function code with most significant bit set indicates error
response
02 Exception code 2 = invalid data address
C2 C1 CRC
Request the state all three alarms:
01 02 00 00 00 03 38 0B
01 Device address
02 Function code 2 = read discrete inputs
00 00 Starting address
00 03 Number of inputs = 3
38 0B CRC
and the unit responds with:
01 02 01 02 20 49
01 Device address
02 Function code
01 Number of data bytes = 1
02 Alarm #2 on, alarms #1 and #3 off
20 49 CRC
To reset the totalizer:
01 05 00 00 FF 00 8C 3A
01 Device address
05 Function code 5 = write single coil
00 09 Coil address = 9
FF 00 Data to reset totalizer
8C 3A CRC (not the correct CRC EJS-02-06-07)
E-8 IM-24-HP
Page 87
Series 24-HP Instruction Manual Appendix E MODBUS Commands
The unit responds with an identical message to that transmitted, and the totalizer
is reset. If the “coil” is turned off as in the following message, the response is also identical to the transmitted message, but the totalizer is not affected.
01 05 00 00 00 00 CD CA
01 Device address
05 Function code 5 = write single coil
00 00 Coil address = 0
00 00 Data to “turn off coil” does not reset totalizer
CD CA CRC
IM-24-HP E-9
Page 88
Sierra 24-HP Instruction Manual Appendix F ATEX-IECEx Specifications
Appendix F
ATEX-IECEx Specifications
NEN EN IEC 60079-0 (2004)
Electrical Apparatus for explosive gas atmospheres
General Requirements
NEN EN IEC 60079-1 (2007)
Electrical Apparatus for explosive gas atmospheres
Flameproof enclosures “d”
NEN EN IEC 61241-0 (2006)
NEN EN IEC 61241-1 (2004)
Directive 94/9/EC (1994)
Equipment Intended for use in Potentially Explosive Atmospheres
(ATEX)
Cable entries are ¾ NPT.
0344
II 2 G Ex d IIB + H2 T6
II 2 D Ex tD A21 IP66 T85°C
KEMA 08ATEX0083
Ex D IIB + H2 T6
Ex tD A21 IP66 T6
IECEx KEM 08.0018
IM-24-HP F-1
Loading...