Dwyer Instruments IEFB Series Specifications-installation And Operating Instructions

Series IEFB Insertion Thermal Energy Meter

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®

Specications - Installation and Operating Instructions

THERMOWELL MODEL CHART
Model A B
A-IEFB-THW-4

A-IEFB-THW-6

4-11/16˝ (119.0 mm)
6-11/16˝ (169.8 mm)

Bulletin F-IEFB

5-25/32 (146.8 mm)
7-25/32 (197.6 mm)

-LCD option

IEFB-X-X-TXX

Shown with

A-IEF-VLV-BR

accessory valve

The Series IEFB is a eld-adjustable insertion thermal energy meter that uses
electromagnetic technology to accurately and reliably measure uid velocity and
energy consumption. The high accuracy IEFB is adjustable to t pipe sizes from 4 to
10˝ (100 to 250 mm), while the standard accuracy IEFB ts pipe sizes 4 to 36˝ (100 to
900 mm). The owmeter is simple to install and incorporates a temperature meter and
an energy calculator into a single unit. The LCD display provides precise readings of
the meter’s values, including temperature and energy consumption, making it ideal for

installation on chillers, boilers, and other heating and cooling applications. The meter's
high measuring accuracy and long lifetime keeps annual system operating costs at
a minimum. In addition, it offers several output options, including selectable BACnet
MS/TP or Modbus® RTU communications protocol over 2-wire RS-485 and standard
analog, frequency, and alarm outputs.

FEATURES/BENEFITS

• Flexible, eld congurable setup displays (-LCD integral option or remote accessory
A-IEF-DSP) accommodate a variety of application congurations. Application

information is display selectable and includes pipe size, pipe material, liquid type,
analog output, pulse/frequency output, alarm outputs, communication outputs,
damping, and calibration factor

• High performance accuracy is maintained through changes in temperature, density
and/or viscosity

• The Setup Wizard and installation tool are simple to use, providing quick and precise

installation

• Accessory setup kit A-IEF-KIT comes with a thickness gage and measuring tape to

ensure exact installation depth

• The meter has no moving parts and electrodes that discourage fouling, which gives
the meter a long lifecycle and minimizes the need for maintenance

• Hot-tap isolation valve accessories allow for easy installation and removal in
operational systems without system downtime

APPLICATIONS

• Monitoring chiller cooling output performance

• Industrial boiler heating performance

• Energy efciency monitoring

• Optimization of heat energy performance

• Commercial and residential heat energy consumption and metering

• District heating and cooling monitoring

• Energy cost allocation monitoring

A-IEFB-THW-XXIEFB-X-X-TXX Hot-tap thermowells for model

IEFB-X-X-RXX (2), shown

with A-IEFB-VLV-BR-1

accessory valve

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SPECIFICATIONS

Service: Compatible clean or dirty non
coating, conductive liquids.
Range: 0 to 20 ft/s (0 to 6 m/s).*

Wetted Materials: Body shaft/tting: 316
SS; Electrodes: 316 SS; Electrode cap:

Polymer/polystyrene; O-ring: Silicone;

Thermowells: 304 SS.

BTU Accuracy per EN1434/ASTM
E3137/CSA C900.1-13: High Accuracy

Units: Class 2 for 2 to 20 ft/s (0.6 to 6

m/s)**; Standard Accuracy Units: Class 3

for 6.5 to 20 ft/s (2 to 6 m/s)**.
Flow Sensor Accuracy: High Accuracy
Units: ±0.5% of reading at calibrated

velocity, ±1% of reading from 2 to 20 ft/s

(0.6 to 6 m/s) ±0.02 ft/s (±0.006 m/s) at <
2 ft/s (0.6 m/s); Standard Accuracy Units:

±1% FS.
Temperature Accuracy: Class B ±(0.30
+ 0.005*t)°C per EN60751.

Differential Temperature Accuracy: Et

= ±(0.5 +3*ΔΘmin/ΔΘ) % per EN1434.

Calculator Accuracy: Ec = ±(0.5

+ΔΘmin/ΔΘ) % per EN1434.
Temperature Compensation: 140 to
220°F (60 to 104.4°C) < 2% error over
±30°F (-1.1 °C) change, 40 to 70°F
(4.4 to 21.1°C) < 2% error over ±10°F
(-12.2°C) change.

Temperature Limits: Ambient: -20 to

160°F (-29 to 71°C), -LCD -4 to 158 °F
(-20 to 70 °C); Process: 15 to 250°F (-9
to 121°C); Storage: -40 to 185°F (-40 to
85°C).
Process Connection: Flowmeter: 1˝

NPT or BSPT with accessory full port ball

valve options; Thermowell: (2) 1/2˝ NPT
or BSPT thermowell with 1˝ full port ball

valve options.

Pressure Limit: 400 psi (27.6 bar) @
100°F (37.8°C).
Pressure Drop: < 0.1 psi at 12 ft/s in 4˝
(<0.01 bar at 3.7 m/s in 100 mm) and

larger pipe.

Outputs: (1) Analog: 4-20 mA, 0-5 V,
0-10 V or 2-10 V (display selectable);
(1) Pulse/Frequency: 0-15 V peak

pulse, 0-500 Hz or scalable pulse output
(display selectable); (2) Alarm: Empty
pipe detection or minimum/maximum
velocity, (display selectable) & Reverse

ow output indication.
*For max owrates >10 ft/s (3 m/s) order option -CC.
** Veried at standard temperature 73.4°F (23°C) refer to listed standards for

detailed accuracy formulations.

[148.0]

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B

A

A-IEFB-THW-XX (2) IEFB-X-X-RXX (2)

Power Requirements: 12-42 VDC, .25 A

@ 24 VDC; 12-36 VAC.

Electrical Connection: Removable

terminal blocks, (2) model selectable 1/2˝

female NPT conduit connection, (2) PG

16 gland or (2) PG 16 gland with 10 ft (3
m) 9 conductor 22 AWG plenum rated

cables, accessory cable lengths up to

200 ft (61 m) optional.
Display (-LCD option): 2 x 2˝ (50 x 50
mm) graphic LCD with backlight.

Conductivity: >20 microsiemens.
Enclosure Material: Powder coated die

cast aluminum.

Enclosure Ratings: NEMA 6P (IP68)
(Non display models); NEMA 4X (IP66)
(-LCD option).
Agency Approvals: BTL.

COMMUNICATIONS (-COM OPTION)

Type: BACnet MS/TP or Modbus®
RTU communication protocol (default
disabled, display selectable).

Supported Baud Rates: 9600, 19200,
38400, 57600, 76800, or 115200 bps

(display selectable).

Device Load: 1/8 unit load.

ADDITIONAL SPECIFICATIONS

Applicable Pipe Material: Most popular
plastic and metal pipes; i.e. Carbon steel,

SS, copper, UPVC/PVDF, galvanized

steel, mild steel, and brass.

Applicable Pipe Size: 4 to 36˝ (100 to
900 mm), model dependent. See model

chart.

Diameter Length Requirements: >10

upstream, >5 downstream.

Temperature Resistance: Matched 4
wire platinum RTD’s.
Relative Humidity: 10 to 90% non-

condensing.

Output Impedance: 4-20 mA: 536 Ω;
5V: 500 Ω; 10V: 1.27k Ω.

12-11/16

[322.2]

DWYER INSTRUMENTS, INC.

P.O. BOX 373 • MICHIGAN CITY, INDIANA 46360, U.S.A.

Modbus® is a registered trademark of Schneider Automation, Inc.

1

Phone: [phone]

Fax: [phone]

www.dwyer-inst.com

e-mail: [e-mail]

MODEL CHART

Example IEFB -L N -CND -R10 -LCD IEFB-LN-CND-R10-LCD
Series IEFB Insertion thermal energy meter

Accuracy L

G

S

F

I

E

T

H

Process
Connection

Housing

Electrical
Connection

Temperature

Sensors

Options LCD

*Thermowells not included. Refer to thermowell accessory model chart to purchase
permanent thermowells.

ACCESSORIES
Model Description

Thermowells

A-IEFB-THW-4

A-IEFB-THW-6

A-IEFB-THW-4-BSPT

A-IEFB-THW-6-BSPT

Hot-Tap Valves
A-IEFB-VLV-BR-1

A-IEFB-VLV-SS-1

A-IEFB-VLV-BR-1-BSPT

A-IEFB-VLV-SS-1-BSPT

*4˝ (100 mm) standard thermowells for 1-1/2˝ stack height: 4 to 7˝ (100 to 175 mm)

pipe size

**6˝ (150 mm) standard thermowells for 1-1/2˝ stack height: 8 to 10˝ (200 to 350
mm) pipe size. Ideal insertion depth is 3˝ (80 mm)

N
B

CND

PG

10

T10

T20

T50

R10

R20

R50

(2) 1/2˝ NPT, 4˝ (100 mm) thermowell for 4 to 7˝ (100 to
175 mm) pipe*
(2) 1/2˝ NPT, 6˝ (150 mm) thermowell for ≥8˝ (200 mm)

pipe**

(2) 1/2˝ BSPT, 4˝ (100 mm) thermowell for 4 to 7˝ (100
to 175 mm) pipe
(2) 1/2˝ BSPT, 6˝ (150 mm) thermowell for ≥8˝

(200 mm) pipe

(2) 1˝ NPT full port isolation valve brass for temperature
sensor with 1˝ branch outlet and 1˝ nipple
(2) 1˝ NPT full port isolation valve 316 SS for
temperature sensor with 1˝ branch outlet and 1˝ nipple
(2) 1˝ BSPT full port isolation valve brass for
temperature sensor with 1˝ branch outlet and 1˝ nipple
(2) 1˝ BSPT full port isolation valve 316 SS for
temperature sensor with 1˝ branch outlet and 1˝ nipple

Standard accuracy <10˝ (250 mm)
pipe; 1% FS
Standard accuracy >10˝ (250 mm)
pipe; 1% FS
Standard accuracy 4 to 36˝ (100 to
900 mm) pipe; 1% FS
High accuracy 4˝ (100 mm) pipe; 1%

of reading

High accuracy 6˝ (150 mm) pipe; 1%

of reading

High accuracy 8˝ (200 mm) pipe; 1%

of reading

High accuracy 10˝ (250 mm) pipe;
1% of reading
High accuracy 4 to 10˝ (100 to 250
mm) pipe; 1% of reading
1˝ Male NPT
1˝ Male BSPT
1/2˝ female NPT
PG 16 gland without cable
PG 16 gland with (2) 10´ (3 m) plenum

rated cables

(2) 10´ (3 m) PT temperature

sensors*

(2) 20´ (6 m) PT temperature

sensors*

(2) 50´ (15 m) PT temperature

sensors*

(2) 10´ (3 m) PT temperature sensors

with hot-tap thermowells

(2) 20´ (6 m) PT temperature sensors

with hot-tap thermowells

(2) 50´ (15 m) PT temperature

sensors with hot-tap thermowells

Integral LCD

COM

BACnet or Modbus® communications
protocol

NIST

NIST traceable calibration

certication for ow and temperature

FC

Factory calibration certication,

±0.5% of reading at selected velocity

CC

Custom conguration (required input)

Safety Information

WARNING

• Only qualied professionals equipped with the necessary required trade skills
should install, remove or service this product. Failure to follow the
proper installation procedures could lead to death or permanent injury.

• This product is intended to be installed in pressurized pipe applications. In this
event, product will be under pressure, caution should be taken to properly vent

system prior to installation or removal of the unit. Failure to do so could result in
equipment damage and/or serious bodily injury.

CAUTION

• Refer to Model Chart and Specications for the applicable options to your unit.

• Ensure the unit is solidly grounded as stated in this bulletin.

• Depressurize and vent systems without Hot-tap valve prior to installation or

removal.

• Conrm the Series IEFB wetted material is chemically compatible with process

media prior to installation and use.

• Do not exceed maximum temperature and pressure specications.

• Wear appropriate personal protective equipment during installation, removal and or

service of the unit.

• Altering the product construction may adversely affect product operation
and voids warranty.

OPERATING PRINCIPLE

• Per Faraday’s Law of electromagnetic induction, a voltage is induced in a
conductor when the uid passes through a magnetic eld, and the induced voltage

will be directly proportional to the velocity of the conductor.

• The Series IEFB Insertion Thermal Energy Meter generates pulsating magnetic
elds in the probe to induce a voltage into a conductive uid owing through the pipe.

• Electrodes located on the probe measure the induced voltage. Electronics and

rmware within the enclosure convert the voltage to velocity and ow rate while

using various outputs to convey the data to connected systems (i.e. display
devices, data acquisition systems, etc.).

• The IEFB energy calculations are based on ow and temperature measurements

while compensating for density and heat content.

INCLUDED WITH THE SERIES IEFB INSERTION THERMAL ENGERY METER

• Carefully unpack the shipping container of your new Series IEFB Insertion Thermal

Energy Meter and remove the following items:

• (1) Series IEFB insertion thermal energy meter

• (2) RTDs – Temperature measuring probes (not shown)

• (1) A-IEF-INGD installation alignment kit:

◦ (1) Alignment scale with captive thumbscrews
◦ (2) Alignment rods (not shown)

• (1) 3 mm Allen wrench (not shown, located in IEFB hanging tag)

• (2) Hot tap thermowells (model dependent)

• (1) Thermal paste (not shown)

RULER
(2 PLACES)

Alignment

scale (1)

Thermowells (2)

Figure 2: Included with IEFB

Series IEFB

OUTLET

INLET

MAX. 12˝

MIN. 3˝

LOAD

Figure 1: Typical installation

2

RECOMMENDED TOOLS

• (2) 12˝ (300 mm) adjustable wrenches

• (1) 12˝ (300 mm) pipe wrench

SETUP

Selecting Installation Location

1. Although the unit may be installed in any orientation, the ideal mounting position
is on the side of the pipe (2 o’clock or 10 o’clock position)* as this generally
minimizes possible air or sediment interference with the Series IEFB. It is not
recommended to mount the unit below the pipe (6 o’clock position).

When installing a unit with an integral display select an installation

NOTICE

location that allows for clear viewing of the display and earth

2. Insert the IEFB in a pipe via a threaded Tee, Saddle, or welded integrally
reinforced branch connection outlet tting.

ground.

IEFB THERMAL ENERGY METER INSTALLATION
FLOWMETER INSTALLATION

1. To prepare the meter for installation, mount the provided alignment scale to the
side of the meter using the two captured thumbscrews, nger tighten only. Be
sure to orient the alignment scale as shown in Figure 5 below. Actual scale

setting determined in next step.

USE LID TO
ENCLOSURE
GAP AS
INDICATOR LINE

*

Figure 3: Proper installation orientation

a. If a Hot-Tap option is required for the IEFB, use a 1-1/4˝ valve kit with proper
mounting hardware available in Model A-IEF-VLV-BR or A-IEF-VLV-SS.
A 1˝ (25 mm) hole in the pipe is required for proper installation.
b. If a Hot-Tap option is required for the RTD thermowells, use a 1˝ valve kit
with proper mounting hardware available in Model A-IEFB-VLV-BR-1 or
A-IEFB-VLV-SS-1. A 1˝ (25 mm) hole in the pipe is required for proper

installation.

3. Select a location that will minimize ow distortion with adequate upstream and

downstream pipe diameters as displayed. Ideal installation will have a minimum

of 10 pipe diameters upstream relative to the instrument and a minimum distance

of 5 pipe diameters downstream.

NOT RECOMMENDED RECOMMENDED

*

5x

20x

Figure 5: Alignment scale installed on IEFB

For Custom Congured Models (-CC Option) only. For eld congurable
models, move to the next section.

2. Use the conguration tag attached to the Series IEFB to identify the value of

the alignment scale setting. Position the alignment scale such that the scale

setting is lined-up with the seam of the enclosure as shown in Figure 5. Securely

tighten the thumbscrews.

3. Skip to Preparing the Unit for Installation.

Note: Minor scale marks are in 1/20ths and take in to account total installation depth.

For Field Congurable Models

2. For eld conguration, a display is required (-LCD option or accessory
A-IEF-DSP) and needs to be powered via normal eld wiring or with the AC wall
adapter accessory A-IEF-PA ( A-IEF-DSP and A-IEF-PA are also available in
the accessory setup kit A-IEF-KIT).
a. When using the AC wall adapter and the cable supplied, connect the red

(positive +) and black (common -) wires of the cable bundle marked “A” to
the open terminals of the AC wall adapter. This will provide temporary power
to the meter to complete the installation set up.

b. For eld wiring, refer to the wiring chart tag attached to the Series IEFB

to identify the terminal block pins for positive (+) and common (-) connection.
If prewired, refer to wiring chart located on the tag.

c. Unscrew the four captured cover screws using the supplied 3 mm Allen

wrench to remove and set aside enclosure cover.

d. If using an A-IEF-DSP or the A-IEF-KIT, insert one connector of the ribbon
cable supplied in the setup kit into the connector labeled “Display” in the
middle of the unit. Be sure to orient the keying feature/tab. See Figure 6

below:

KEYING
FEATURE

FLOW DIRECTION

Figure 4: Proper installation location

20x

5x

Figure 6: Connecting the display for eld congurable models

3

3. Plug the other end of the cable into the bottom of A-IEF-DSP or A-IEF-KIT.

PIPE ALIGNMENT ROD MUST

1

8

Orient the keying feature/tab as shown:

KEYING

Figure 7: Keying feature

4. Apply power to the unit to turn on the display. Follow the on-screen directions

for entering the necessary parameters to set up the unit. Obtain the alignment
scale setting values and record them below:

A. IEFB “Alignment Scale Value”

_______________________

This is the value needed for owmeter installation.

Preparing the Unit for Installation

NOTICE

obtain these measurements. When the precise pipe measurement information is

known, select Option 2, High Performance setup, within the pipe setup menu.

Precise pipe measurements are required for high performance

installation. The A-IEF-KIT includes setup display A-IEF-DSP,
thickness gage UTG and measuring tape A-IEF-MSTP used to

FEATURE

Sensor Alignment

A depth and ow alignment installation tool is provided to ensure proper depth insertion
and ow alignment. To set the insertion depth, verify the alignment scale is set to the
alignment scale value recorded previously as shown in gure 9 below.
Loosen compression nut (4) to allow the shaft (3) freedom to travel up and down and

rotate inside the process collet (5).

Note: Maintain the scale value recorded in step 4A from section "For Field Congurable
Models."

Install Depth and Alignment Rods

1. Remove alignment rods from sides of alignment scale by sliding them out.

2. Insert the two rods into the alignment scale as shown in Figure 10.

USE LID TO
ENCLOSURE
GAP AS
INDICATOR LINE

NOTICE

Preparing the Unit for installation (Figure 8)

1. Apply appropriate sealant to the process collet threads (5) such as sealant tape

or paste as suitable for the application.

2. Install the process collet (5) in valve (6), then tighten by hand.

3. Using the hex geometry, tighten the process collet (5) with a wrench to 180 in-lbs.

4. Slowly open the valve handle (7), checking for leaks. If leaks occur around

threaded connections, close the valve and tighten those connections.

NOTICE

Do not adjust housing compression nut at top of probe shaft (3).

NOTICE

2

4

5

6

When using measuring tape A-IEF-MSTP to measure pipe
circumference, use the 100ths side to measure the circumference

of the pipe (without insulation).

Use two wrenches, one to hold the valve and another wrench to
turn the process collet.

3

7

1. Enclosure

2. Cable Nut

9

3. Probe Shaft

4. Compression Fitting

5. Process Collet

6. Valve

7. Valve Handle

8. Pipe

9. Sensor Probe

Figure 9: IEFB thermal energy meter alignment scale

ALIGNMENT

RODS

Figure 10: IEFB thermal energy meter alignment scale

3. Rotate the meter so the pipe alignment rod is parallel with the ow in the pipe.

BE PARALLEL WITH PIPE

Figure 11: Flow alignment rod

4. Slide the shaft (3) down into the process collet (5) until the depth rod contacts the

pipe. If pipe insulation is present, press the rod through the insulation.

a. Tighten the compression nut (4) to 180 in lbs. (20.3 N m)
b. Remove the ow alignment rod. Loosen the thumbscrews and slide the

alignment tool up to remove the depth alignment rod.
c. Store both rods in the storage slots on the sides of the alignment scale.
Tighten thumbscrews and leave alignment tool mounted on unit for storage.

Figure 8: Side system view

4

1

6

3.000

2

3

4

Figure 12: Hot tap installed in pipe cross section

RTD INSTALLATION
Standard Thermowells

When installing temperature sensors in a new or drained uid system, the IEFB uses

standard thermowells.

For accurate energy usage measurement, the temperature sensors in the inlet and

outlet must be located in ideal positions. One thermowell will be installed in the

downstream run of pipe as the IEFB (minimum of 3˝ (75 mm) and no more than 12˝
(300 mm) from the owmeter.) The second thermowell will be placed in the return path

of the measured system.

Note: Ensure the selected locations for the thermowells are at suitable distances given

the length of the RTD cable lengths provided.

Select the appropriate standard thermowell size for the application pipe size. 4˝ (100
mm) and 6˝ (150 mm) Standard Thermowells are available. The pipe size ranges are

listed below:

4˝ (100 mm) Standard Thermowells for 1-1/2˝ Maximum Stack Height:

4 to 7˝ (100 to 175 mm) Pipe Size

6˝ (150 mm) Standard Thermowells for 1-1/2˝ Maximum Stack Height:

8 to 36˝ (200 to 250 mm) Pipe Size
Ideal insertion depth is 3˝

5

1. Cable Gland or Conduit Fitting

2. Compression Fitting

3. Process Collet

4. Valve (optional)

5. Valve handle (optional)

6. Pipe

7. Thermowell

7

Hot Tap Thermowell Sensor Depth

1. Insert the thermowell into the process collet (3) by loosening compression nut (2).
Screw into process valve (4) open the valve by turning valve handle (5).

2. Fully insert thermowell to maximum depth.
a. If thermowell makes contact with pipe ID, retract 1/4˝ (65 mm).

3. Tighten the nut (2) to 15 ft.-lbs (20.3 N m).

4. Repeat steps 1 through 3 for insertion of the second thermowell.

Note: For best accuracy, insulate the portion of the thermowells that is outside the

pipe.

1.500
MAX.

5.500
MAX.

3.000
MIN.

Figure 13: Stack height

MIN.

5

RTD INSTALLATION

The Series IEFB is provided with a matched pair of temperature sensors. These
temperature sensors must be wired to the IEFB and properly installed into the

accessory thermowells.

Cable Gland (PG 16) Thermowell (refer to Figure 14 below)

1. Remove compression nut (1) by unscrewing from cable gland (2).

2. Remove insert (3) from the cable gland (2).

3. Route the RTD through compression nut (1) and cable gland (2), then into the
insert (3) and washer (4).

Note: Ensure insert (3) is oriented correctly, as shown in Figure 14 below.

4. Apply a generous coating of provided thermal paste onto the RTD.

5. For best accuracy, rmly insert the RTD into the thermowell, ensuring the tip of
the RTD touches the bottom of the thermowell.

6. Screw the cable gland (2) into the thermowell.

7. Tighten the compression nut (1) onto the cable gland (2) to 30 in/lbs.

2

1

3

4

1. Compression nut

2. Cable gland

3. Insert

4. Washer

Figure 14: Thermowell assembly with PG gland

GROUNDING

Metallic Pipe

For proper operation, the IEFB must be earth grounded.

1. Connect a ground wire to meter housing via the ground lug on the housing collet.

2. Connect the ground wire to a known earth ground.
a. If the pipe is grounded, connect the ground wire to the pipe using suitable
devices such as grounding clamps.

GROUNDING
LUG

Figure 16: Metalic grounding

Non-Metallic Pipes

1. Connect a ground wire to the meter housing per the ground lug on the housing

collet.

2. Connect the ground wire to a known earth ground.

3. Ground the uid to earth.

Conduit Fitting Thermowell (refer to Figure 15 below)

1. Pull the RTD through the conduit.

2. Push the RTD through the conduit tting. Route the RTD through compression
nut (1) and conduit tting (2), then into the insert (3) and washer (4).

3. Apply a generous coating of provided thermal paste onto the RTD.

4. Firmly insert the RTD into the thermowell ensuring the tip of the RTD touches the

bottom of the thermowell.

5. Tighten the conduit tting into the thermowell to 30 in/lbs.

6. Secure the conduit into the conduit tting.

2

1

3

4

1. Compression nut

2. Cable gland

3. Insert

4. Washer

Figure 15: Thermowell assembly with CND gland

GROUNDING

RINGS

Figure 17: Non-metalic grounding

POWER SUPPLY

1. Choose a power supply with a voltage and current rating that meets the power
specications under all operating conditions.

2. If the power supply is unregulated, make sure the output voltage remains within
the required voltage range under all power line conditions.

6

WIRING DIAGRAM

Cable Terminal # Wire Color Description Note
A

A
A
B
External

Analog Current Output

B
B

Analog Voltage Output

B
B

Frequency Output

B
B

RS-485 Communication (optional)

B
B

Reverse Flow

A
A

Alarm

A
A

Pulse

A
A

No Connection

B
B
A
A

1

2

13
14

3
4

5
6

8

7

11,12
9,10

15
16

17
18

19

20

-

-

-

-

Red
Black
Shield
Shield

-

Brown
Blue

Green

White

Violet

Grey

Orange
Yellow

Brown
Blue

Green

White

Orange
Yellow

Red
Black

Violet

Grey

Power Supply Positive
Power Supply Common

-

­Earth/Chassis Ground

(+) Analog current output
(-) Analog output common

(+) Analog voltage output
(-) Analog output common

(+) Frequency output

(-) Analog output common

RS-485 (+)
RS-485 (-)

Isolated solid state output N.O.
Isolated solid state output N.O.

Isolated solid state output N.O.
Isolated solid state output N.O.

Isolated solid state output N.O.
Isolated solid state output N.O.

Do not connect
Do not connect
Do not connect
Do not connect

Connect to +24VDC or VAC transformer
Connect to 24VDC/VAC common
If used - Application Dependant
If used - Application Dependant

-

4 to 20 mA process output

Current output common

May be congured; 0 to 10 V, 0 to 5 V, 2 to 10 V, etc.
Voltage output common

0 to 500 Hz output (@ 0/15 VDC output level)
Frequency output common

On board short for daisy chain connection
On board short for daisy chain connection

50 V AC/VDC @ 100 mA maximum
50 V AC/VDC @ 100 mA maximum

50 V AC/VDC @ 100 mA maximum
50 V AC/VDC @ 100 mA maximum

50 V AC/VDC @ 100 mA maximum
50 V AC/VDC @ 100 mA maximum

-

-

-

-

The Cable column identifying cable A and B is reective of units that include factory installed cabling.

Wiring PCBA shown in Figure 18 with terminal block numbers as listed in above wiring diagram chart.

Figure 18: PCBA

7

Figure 19: PCBA

Figure 20: Wiring diagram

8

IEFB SETUP

IEFB FLOWMETER SETUP
Determining IEFB probe insertion depth for models with a display

Use the Series IEFB insertion thermal energy meter with -LCD display option or A-IEF­DSP to calculate the probe insertion depth.

NOTICE

measuring tape A-IEF-MSTP to obtain these measurements. When the precise pipe

measurement information is known, select High Performance Setup under the Install

Kit Menu when prompted by the display as shown below.

1. To measure the pipe circumference, remove any existing insulation at the location
where the meter will be installed. Wrap the tape measure around the pipe at the
selected location using the 100ths side of the tape. Record this measurement to

enter later when prompted.

2. To measure the wall thickness of the pipe, use the thickness gage UTG. Follow

the directions provided with the UTG gage and record the thickness to enter later
when prompted.

3. Follow the on-screen directions for entering the circumference and wall thickness
dimensions. See the Electronic Control Data Setup section of this manual for

more information.

Precise pipe measurements are required for a high performance

installation. It is recommended to use the A-IEF-KIT which
includes a setup display A-IEF-DSP, thickness gage UTG and

Determining IEFB probe insertion depth for models without a display

For models without a display, the following formulas allow for calculating the alignment

scale value. Pipe wall thickness charts are also included on the next page.

Pipes <12 in (250 mm) diameter: 7.1625-1/2*D
Pipes 12 in (300 mm) to 36 in (914.4 mm): 7.1625-(0.1*(D-2*WT))+WT

Where D represents the pipe outer diameter and WT represents the pipe wall

thickness, both in inches.

Measurement of the circumference and wall thickness can be accomplished using

A-IEF-KIT, as described in the previous section, or similar method. Precise pipe

measurements are required for a high performance installation.

Position the alignment scale such that the alignment scale setting is lined-up with

the seam of the enclosure as shown in Figure 21. Minor scale marks are in 1/20ths.
Securely nger tighten the thumbscrews.

USE LID TO
ENCLOSURE
GAP AS
INDICATOR LINE

Figure 21: Alignment scale positioning

9

WALL THICKNESS

Carbon Steel

Pipe Diameter (in) DN (mm) SCH5 (in) SCH5 (mm) SCH10 (in) SCH10 (mm) SCH40 (in) SCH40 (mm) SCH80 (in) SCH80 (mm)

4.5

5.563

6.625

8.625

10.75

12.75
14
16
18
20
24
32
36

WALL THICKNESS

Stainless Steel

Pipe Diameter (in) DN (mm) SCH5 (in) SCH5 (mm) SCH10 (in) SCH10 (mm) SCH40 (in) SCH40 (mm) SCH80 (in) SCH80 (mm)

4.5

5.563

6.625

8.625

10.75

12.75
14
16
18
20
24
32
36

WALL THICKNESS

Copper

Pipe

Diameter (in) DN (mm)

4.125

5.125

6.125

8.125

10.25

12.25
14
16
18
20
24
32
36

104.78

130.18

155.58

206.38

257.18

307.98

355.60

406.40

457.20

508.00

609.60

813.00

914.40

114.30

141.30

168.28

219.08

273.05

323.85

355.60

406.40

457.20

508.00

609.60

813.00

914.40

114.30

141.30

168.28

219.08

273.05

323.85

355.60

406.40

457.20

508.00

609.60

813.00

914.40

0.083

0.109

0.109

0.109

0.134

0.156

0.156

0.165

0.165

0.188

0.218

0.250

0.250

0.083

0.109

0.109

0.109

0.134

0.156

0.156

0.165

0.165

0.188

0.218

0.250

0.250

Type K Type L Type M

in mm in mm in mm

0.134

0.160

0.192

0.271

0.341

0.411

0.471

0.471

0.541

0.610

0.680

0.818

1.096

3.400

4.064

4.876

6.883

8.661

10.439

11.963

11.963

13.741

15.494

17.272

20.777

27.838

2.110

2.770

2.770

2.770

3.400

3.960

3.960

4.190

4.190

4.780

5.540

6.350

6.350

2.110

2.770

2.770

2.770

3.400

3.960

3.960

4.190

4.190

4.780

5.540

6.350

6.350

0.114

0.125

0.140

0.200

0.356

0.411

0.459

0.459

0.513

0.568

0.623

0.732

0.950

2.895

3.175

3.556

5.080

9.042

10.439

11.658

11.658

13.030

14.427

15.824

18.593

24.130

0.120

0.134

0.134

0.148

0.165

0.180

0.250

0.250

0.250

0.250

0.250

0.312

0.312

0.120

0.134

0.134

0.148

0.165

0.180

0.188

0.188

0.188

0.218

0.250

0.312

0.312

0.095

0.109

0.122

0.170

0.308

0.356

0.398

0.398

0.445

0.493

0.541

0.636

0.826

3.050

3.400

3.400

3.760

4.190

4.570

6.350

6.350

6.350

6.350

6.350

7.920

7.920

3.050

3.400

3.400

3.760

4.190

4.570

4.780

4.780

4.780

5.540

6.350

7.920

7.920

2.413

2.768

3.098

4.318

7.823

9.042

10.109

10.109

11.303

12.522

13.741

16.154

20.980

0.237

0.258

0.280

0.322

0.365

0.406

0.437

0.500

0.562

0.593

0.688

0.688

0.750

0.237

0.258

0.280

0.322

0.365

0.375

0.375

0.375

0.375

0.375

0.375

0.375

0.375

6.020

6.550

7.110

8.180

9.270

10.310

11.130

12.700

14.270

15.090

17.480

17.480

19.050

6.020

6.550

7.110

8.180

9.270

9.525

9.525

9.525

9.525

9.525

9.525

9.525

9.525

0.337

0.375

0.432

0.500

0.593

0.687

0.750

0.843

0.937

1.031

1.218

1.218

1.218

0.337

0.375

0.432

0.500

0.500

0.500

0.500

0.500

0.500

0.500

0.500

0.500

0.500

8.560

9.530

10.970

12.700

15.090

17.480

19.050

21.440

23.830

26.190

30.960

30.960

30.960

8.560

9.525

10.970

12.700

12.700

12.700

12.700

12.700

12.700

12.700

12.700

12.700

12.700

WALL THICKNESS
PVC

Pipe

Diameter (in) DN (mm)

4.5

5.563

6.625

8.625

10.75

12.75
14
16
18
20
24
32
36

114.00

141.00

168.00

219.00

273.00

324.00

356.00

406.00

457.20

508.00

609.60

813.00

914.40

SCH40 SCH80

in mm in mm

0.237

6.020

0.337

0.258

0.280

0.322

0.365

0.406

0.437

0.500

0.562

0.593

0.687

0.874

0.968

6.550

7.110

8.180

9.270

10.300

11.100

12.700

14.274

15.062

17.450

22.200

24.587

0.375

0.432

0.500

0.593

0.687

0.750

0.843

0.937

1.031

1.218

1.572

1.754

8.560

9.520

11.000

12.700

15.100

17.400

19.000

21.400

23.800

26.187

30.937

39.929

44.552

10

WALL THICKNESS

Carbon Steel

Pipe Diameter (in) DN (mm) SCH5 (in) SCH5 (mm) SCH10 (in) SCH10 (mm) SCH40 (in) SCH40 (mm) SCH80 (in) SCH80 (mm)

4.5

5.563

6.625

8.625

10.75

12.75
14
16
18
20
24
32
36

WALL THICKNESS

Stainless Steel

Pipe Diameter (in) DN (mm) SCH5 (in) SCH5 (mm) SCH10 (in) SCH10 (mm) SCH40 (in) SCH40 (mm) SCH80 (in) SCH80 (mm)

4.5

5.563

6.625

8.625

10.75

12.75
14
16
18
20
24
32
36

WALL THICKNESS

Copper

Pipe

Diameter (in) DN (mm)

4.125

5.125

6.125

8.125

10.25

12.25
14
16
18
20
24
32
36

104.78

130.18

155.58

206.38

257.18

307.98

355.60

406.40

457.20

508.00

609.60

813.00

914.40

114.30

141.30

168.28

219.08

273.05

323.85

355.60

406.40

457.20

508.00

609.60

813.00

914.40

114.30

141.30

168.28

219.08

273.05

323.85

355.60

406.40

457.20

508.00

609.60

813.00

914.40

0.083

0.109

0.109

0.109

0.134

0.156

0.156

0.165

0.165

0.188

0.218

0.250

0.250

0.083

0.109

0.109

0.109

0.134

0.156

0.156

0.165

0.165

0.188

0.218

0.250

0.250

Type K Type L Type M

in mm in mm in mm

0.134

0.160

0.192

0.271

0.341

0.411

0.471

0.471

0.541

0.610

0.680

0.818

1.096

3.400

4.064

4.876

6.883

8.661

10.439

11.963

11.963

13.741

15.494

17.272

20.777

27.838

2.110

2.770

2.770

2.770

3.400

3.960

3.960

4.190

4.190

4.780

5.540

6.350

6.350

2.110

2.770

2.770

2.770

3.400

3.960

3.960

4.190

4.190

4.780

5.540

6.350

6.350

0.114

0.125

0.140

0.200

0.356

0.411

0.459

0.459

0.513

0.568

0.623

0.732

0.950

2.895

3.175

3.556

5.080

9.042

10.439

11.658

11.658

13.030

14.427

15.824

18.593

24.130

0.120

0.134

0.134

0.148

0.165

0.180

0.250

0.250

0.250

0.250

0.250

0.312

0.312

0.120

0.134

0.134

0.148

0.165

0.180

0.188

0.188

0.188

0.218

0.250

0.312

0.312

0.095

0.109

0.122

0.170

0.308

0.356

0.398

0.398

0.445

0.493

0.541

0.636

0.826

3.050

3.400

3.400

3.760

4.190

4.570

6.350

6.350

6.350

6.350

6.350

7.920

7.920

3.050

3.400

3.400

3.760

4.190

4.570

4.780

4.780

4.780

5.540

6.350

7.920

7.920

2.413

2.768

3.098

4.318

7.823

9.042

10.109

10.109

11.303

12.522

13.741

16.154

20.980

0.237

0.258

0.280

0.322

0.365

0.406

0.437

0.500

0.562

0.593

0.688

0.688

0.750

0.237

0.258

0.280

0.322

0.365

0.375

0.375

0.375

0.375

0.375

0.375

0.375

0.375

6.020

6.550

7.110

8.180

9.270

10.310

11.130

12.700

14.270

15.090

17.480

17.480

19.050

6.020

6.550

7.110

8.180

9.270

9.525

9.525

9.525

9.525

9.525

9.525

9.525

9.525

0.337

0.375

0.432

0.500

0.593

0.687

0.750

0.843

0.937

1.031

1.218

1.218

1.218

0.337

0.375

0.432

0.500

0.500

0.500

0.500

0.500

0.500

0.500

0.500

0.500

0.500

8.560

9.530

10.970

12.700

15.090

17.480

19.050

21.440

23.830

26.190

30.960

30.960

30.960

8.560

9.525

10.970

12.700

12.700

12.700

12.700

12.700

12.700

12.700

12.700

12.700

12.700

WALL THICKNESS
PVC

Pipe

Diameter (in) DN (mm)

4.5

5.563

6.625

8.625

10.75

12.75
14
16
18
20
24
32
36

114.00

141.00

168.00

219.00

273.00

324.00

356.00

406.00

457.20

508.00

609.60

813.00

914.40

SCH40 SCH80

in mm in mm

0.237

6.020

0.337

0.258

0.280

0.322

0.365

0.406

0.437

0.500

0.562

0.593

0.687

0.874

0.968

6.550

7.110

8.180

9.270

10.300

11.100

12.700

14.274

15.062

17.450

22.200

24.587

0.375

0.432

0.500

0.593

0.687

0.750

0.843

0.937

1.031

1.218

1.572

1.754

8.560

9.520

11.000

12.700

15.100

17.400

19.000

21.400

23.800

26.187

30.937

39.929

44.552

11

Printing out conguration values

1

8

6

After installation is complete, a table of conguration values can be printed to insert

into one of the hanging plastic envelopes for future reference. The housing cover/
display needs to be removed to access to the display port, which is necessary to

retrieve the table of conguration values.

1. Unscrew the four captured cover screws using the supplied 3 mm Allen wrench
and remove the enclosure cover. Leave the display cable connected to the main

unit.

2. Insert a mini-USB cable (not included) into the USB connector on the bottom side
of the display PCB.

3. Connect the other end of the cable into a standard USB port in a laptop.

4. The Series IEFB insertion thermal energy meter will appear as a standard USB

drive on the laptop.

5. The le name with the conguration values is in the format of: serial number.txt.

The serial number can be found on the product label on the side of the meter.

6. Print out the conguration values and insert into one of the hanging plastic

envelopes for future reference

7. Re-attach the housing cover/display by tightening the four 3 mm screws.

CONFIGURATION DATA PRINT OUT EXAMPLE

[Flow Meter Information]

MeterTag=Series IEFB
SerialNumber=018M8Y
ModelNumber=IEFB-HN-10-LCD-COM
DateCode=20190319

[Energy Meter Information]

SerialNumber=TestCal4
DateCode=20190101

[Setup Information]

CalibratedBy=

Date=

Units=English

VelocityUnit=ft/s
FlowUnit=ft³/s
MassFlowUnit=lbm/h
VolumeUnit=gal
TemperatureUnit=°F
PowerUnit=kW
EnergyUnit=kWh

[Pipe Conguration]

LiquidType=Water

PipeMaterial=Carbon Steel

PipeDiameter=8 in
PipeWallThickness=Schedule 40
AlignmentScaleValue=2.85
ThermowellDepth=Maximum Depth

[Energy Meter Setup]

FlowMeterLocation=Inlet
RTDLocationMapping=1=Inlet, 2=Outlet

HeatingChangeoverTemperature=77

ProcessPressure=232.060 PSI

[Analog Output]

AnalogOutputType=Current 4-20mA
AnalogOutputVariable=Velocity ft/s

AnalogOutputHigh=20.00

AnalogOutputLow=0.00

[Pulse/Freq. Output Setup]

Pulse/Freq. Output=Pulse
PulseOutputVariable=Total Flow

PulseOutput=7 gal/pulse

PulseWidth=50 ms

[Alarm Output Setup]

AlarmOutput=Velocity Alarm
VelocityAlarmType=Low Limit
VelocityAlarmTrigger=0.10 ft/s
VelocityAlarmHysteresis=0.05 ft/s

[Communication]

CommunicationProtocol=Modbus

NetworkAddress=127
BaudRate=115200

SerialParity=Even

SerialStopbits=1

Removing Series IEFB Insertion Thermal Energy Meter

1. To remove the meter from an installation without a valve, depressurize the pipe
and skip to step 4. If installed with a valve loosen compression tting (4) and

withdraw the meter shaft fully through the valve until it stops.

WARNING

2. Tighten compression tting (4) snug.

3. Close valve (6) via valve handle (7).

4. Remove meter by unscrewing process collet (5) from valve (6).

CAUTION

Removing Thermowells

1. To remove the thermowell from an installation without a valve, depressurize the
pipe and skip to step 4. If installed with a valve, loosen compression tting (2) and

withdraw the thermowell shaft fully through the valve until it stops.

WARNING

2. Tighten compression tting (2) snug.

3. Close valve (4) via valve handle (5).

4. Remove thermowell by unscrewing process collet (3) from valve (4).

Contents under high pressure.

Be sure to support the housing end of the meter to prevent it from

ipping while unscrewing process collet (5) as damage may occur
to the probe ns.

2

4

5

6

Figure 22: IEFB Side System View

Contents under high pressure.

1

2

3

4

3

7

9

1. Enclosure

2. Cable Nut

3. Probe Shaft

4. Compression Fitting

5. Process Collet

6. Valve

7. Valve Handle

8. Pipe

9. Sensor Probe

5

1. Cable gland or conduit tting

12

Figure 23: Hot tap thermowell installed in pipe cross section

2. Compression Fitting

3. Process Collet

4. Valve (optional)

5. Valve handle (optional)

6. Pipe

7. Thermowell

7