Dwyer Instruments IEFB Series Specifications-Installation And Operating Instructions

Series IEFB Insertion Thermal Energy Meter
Specifications - Installation and Operating Instructions
IEFB-X-X-TXX IEFB-X-X-TXX
Shown with
A-IEF-VLV-BR
accessory valve
The Series IEFB is a field-adjustable insertion thermal energy meter that uses
electromagnetic technology to accurately and reliably measure fluid velocity and
energy consumption. The high accuracy IEFB is adjustable to fit pipe sizes from 4 to
10˝ (100 to 250 mm), while the standard accuracy IEFB fits pipe sizes 4 to 36˝ (100 to
900 mm). The flowmeter 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, field configurable setup displays (-LCD integral option or remote accessory
A-IEF-DSP) accommodate a variety of application configurations. 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 efficiency monitoring
• Optimization of heat energy performance
• Commercial and residential heat energy consumption and metering
• District heating and cooling monitoring
• Energy cost allocation monitoring
DWYER INSTRUMENTS, INC.
P.O. BOX 373 • MICHIGAN CITY, INDIANA 46360, U.S.A.
-LCD option
A-IEFB-THW-XX Hot-tap thermowells for model
IEFB-X-X-RXX (2), shown
with A-IEFB-VLV-BR-1
accessory valve
THERMOWELL MODEL CHART
Model
A-IEFB-THW-4
A-IEFB-THW-6
8-23/64 [212.2]
5-53/64
[148.0]
21-1/64
[533.6]
22-1/64
[559.0]
61/64
[24.1]
A-IEFB-THW-XX (2)
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/fitting: 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
flow output indication.
*For max flowrates >10 ft/s (3 m/s) order option -CC.
** Verified at standard temperature 73.4°F (23°C) refer to listed standards for
detailed accuracy formulations.
Modbus
1 Phone: 219/879-8000
Fax: 219/872-9057
Bulletin F-IEFB
A B
4-11/16˝ (119.0 mm) 5-25/32 (146.8 mm)
6-11/16˝ (169.8 mm) 7-25/32 (197.6 mm)
5-53/64
[148.0]
4-51/64
[121.9]
13-25/32
[350.0]
12-11/16
B
A
[322.2]
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.
is a registered trademark of Schneider Automation, Inc.
®
www.dwyer-inst.com
e-mail: info@dwyermail.com
®