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 IEFB incorporates a temperature meter and a calculator into a
single unit. The LCD display provides clear 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 high measuring accuracy and
long lifetime keeps annual 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.
Product 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
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)**.
**Verified at standard temperature 73.4°F (23°C) refer to listed standards for detailed accuracy formulations.
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*(Delta)(Theta)min/(Delta)(Theta)] % per EN1434 for differential temperature.
Calculator Accuracy:
Ec = ±[0.5 +(Delta)(Theta)min/(Delta)(Theta)] % 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 to 500 Hz or scalable pulse output (display selectable); (2) Alarm: Empty pipe detection or minimum/maximum velocity, (display selectable) & Reverse flow output indication.
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 (61m) 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.
Save time and reduce installation costs with flow, temperature sensors and calculator delivered in one preprogrammed, complete package.
Maintain system energy efficiency with high performance accuracy that is maintained through changes in temperature, density or viscosity per universally accepted standard
Meet application requirements with field configurable setup displays (-LCD integral option or remote accessory A-IEF-DSP), which accommodate a variety of application configurations with one model through multiple display configurations i.e. pipe size, pipe material, liquid type, analog output, pulse/frequency output, alarm outputs, communication outputs, damping, and calibration factor
Quick and easy ordering and set up with Setup Wizard and installation tool that are simple to use and allow for precise installation
Save time with accessory setup kit A-IEF-KIT that ensures exact installation application depth with included thickness gage and measuring tape
Reduced costs, long product life, and minimal maintenance requirements with no moving parts to wear or break and electrodes that discourage fouling
Minimize installation costs with isolation valve accessory options to allow for installation in operational systems via hot-tap kit or easy removal without system downtime
Required documents included with NIST traceable pass/fail verification certificate included standard for Carbon Steel Schedule 40 pipes sized 4" (102 mm), 6" (150 mm), 8" (200 mm)
IEFB-XX-X-X-OPT IEFB INSERTION ELECTROMAGNETIC ENERGY SYSTEM
1ST SYMBOL (1ST X) ACCURACY
H HIGH ACCURACY 4",6",8",10" PIPE (1% OF READING)
F HIGH ACCURACY 4" PIPE (1% OF READING)
I HIGH ACCURACY 6" PIPE (1% OF READING)
E HIGH ACCURACY 8" PIPE (1% OF READING)
T HIGH ACCURACY 10" PIPE (1% OF READING)
S STANDARD ACCURACY 4" to 36" PIPE (1% FULL SCALE)
L 4" to 10" PIPE (1% FS)
G 10" to 36" PIPE (1% FS)
2ND SYMBOL (2ND X) PROCESS CONNECTION
N MALE NPT
B MALE BSPT
3RD SYMBOL (3RD X) HOUSING ELECTRICAL CONNECTION
CND 1/2 IN FEMALE NPT CONDUIT CONNECTION W/O CABLE
PG PG GLAND W/O CABLE
10 PG GLAND W/ 10 FT CABLE
LFMC LIQUID TIGHT FLEX METAL CONDUIT FITTING
NCH FEMALE NPT CONDUIT HUB
4TH SYMBOL (4TH X) TEMPERATURE SENSORS
T10 TEMP SENSOR ASSEMBLY W/10' CABLE
T20 TEMP SENSOR ASSEMBLY W/20' CABLE
T50 TEMP SENSOR ASSEMBLY W/50' CABLE
R10 HOT TAP THERMOWELL TEMP SENSOR ASSEMBLY W/10' CABLE
R20 HOT TAP THERMOWELL TEMP SENSOR ASSEMBLY W/20' CABLE
R50 HOT TAP THERMOWELL TEMP SENSOR ASSEMBLY W/50' CABLE
OPTIONS (OPT)
-CC CUSTOM CONFIGURATION *ADDITIONAL INPUT REQUIRED
-COM BACNET/MODBUS COMMUNICATION
-FC FACTORY CALIBRATION CERTIFICATE
-LCD LCD DISPLAY
-NIST NIST CALIBRATION CERTIFICATE