Clamp-on Ultrasonic Heat Meters

RBFM Fixed Clamp-on ultrasonic heat meters (BTU Meters) employ the proven transit-time ultrasonic flow measurement technique combined with two PT 100 temperature sensors (or customer-supplied RTD sensors) for calculating total and instantaneous energy consumption. Flow measurement may be achieved via clamp-on, spool piece, or insertion-type sensors. Our microprocessor based, user friendly field programmable flow measurement technique creates no interruption of the process flow and allows for easy installation.

RBFM Fixed Clamp-on ultrasonic heat meter is available with a variety of features that make it adaptable to many different applications. Available transducer types include clamp-on, in-line, and insertion. Wall-mount, panel-mount, pipe-mounted and compact din-rail mounted display types are also offered. Additional available features include pulse, 0-20mA & 4-20mA outputs, RS-232 communication, user-selectable engineering units, and a data logger function. This variety of features, combined with its low cost, make the RB series an ideal choice for economical BTU monitoring in many applications involving chillers, radiators, and heat exchangers.

Description

  • Features
  • Specification
  • Model Selection
  • Applicants
  • Download
Features

RBFM Fixed Clamp-on ultrasonic heat meters(BTU Meters) Features:

  •  High accuracy - ±1% of reading
  • Bi-directional flow measurement
  • Wide range of fluid velocities - 0.03 ~ ± 105 feet/sec.
  • Transducers for pipe sizes ranging from ½" to 240" (15 to 6000 mm)
  • Measures energy consumption rate and total
  • No moving parts,
  • Fixed and Portable version
  • Proven ultrasonic technology for flow measurement and PT 100 for temperature
  • Clamp-on, spool piece or insertion mounting for flow measurement
  • RS485 and Modbus communication protocols available
  • 4-20mA and pulse outputs with available relays and alarms
  • Data logger function - includes time & date, totalizer, diagnostics
  • Fast response time - less than 1 second
  • NIST traceable calibration certificate (optional)
Specification

RBFM Fixed Clamp-on ultrasonic heat meters (BTU Meters) Specifications

Measuring Principle

Transit time difference

Mounting

wall mounting, panel, local

Transducer type

clamp-on, spool piece, or insertion

Display

LCD with backlight, 2 x 20 characters 1-line, non-backlit 7 digit LCD (ILD version) Displays energy rate, total consumption, temperature, instantaneous flow rate, accumulated flow rate, velocity, time

Keypad

4 x 4 tactile-feedback membrane keypad

Pipe Size

25-6000mm

Pipe Material

Carbon Steel, Stainless Steel, Ductile Iron Copper, PVC, Aluminum, Asbestos Fiberglass, etc.

Output Signals

4-20mA , Impedance 0-1kΩ, pulse, relays, Isolated OCT for alarms (on/off with buzzer)

Inputs

Two RTD channels, and additional inputs

Model Selection

RBFM Wall-mounted Ultrasonic heat meters  (BTU Meters) Model Selection


RBFM   X
X X DNxx X X
X X X

Instrument Type

F Ultrasonic Flowmeter
H Ultrasonic Heat meter

Power supply
A 220VAC
D 24VDC
B Battery


Flow/Heat meter Type


 
BF
Fixed Type
H Handheld type
P Portable type
Flanged type
B Battery type

Transducer Type

SN S type(pipe size: 15-100mm, temp.: -30 to 90)
SH S type(pipe size: 15-100mm, temp.: -40 to 160)
SPMN S type with mounting frame only for RBFMH/P(pipe size: 15-100mm, temp.: -40 to 90)
SPMH S type with mounting frame only for RBFMH/P(pipe size: 15-100mm, temp.: -40 to 160)
MN M Type(pipe size: 50-700mm, temp.: -30 to 90))
MH M Type(pipe size: 50-700mm, temp.: -40 to 160))
MPMN M type with mounting frame only for RBFMH/P(pipe size: 50-300mm, temp.: -40 to 90)
MPMH M type with mounting frame only for RBFMH/P(pipe size: 50-300mm, temp.: -40 to 160)
RB-1 extended the mounting frame, for pipe:DN300-700mm, temp.: -40 to 90
RBH extended the mounting frame, for pipe:DN300-700mm, temp.: -40 to 90
LN L type(pipe size: 300-6000mm, temp.: -30 to 90)
LH L type(pipe size: 300-6000mm, temp.: -40 to 160)
I Insertion Type
IE Extended type
F Flanged type


DNxx Pipe size


Pipe material

C Carbon Steel
SS Stainless Steel
CI cast iron
F Fibreglass
P PVC
C cement pipe
X Others,  clarify

X Pressure(MPa)

Output
N NO
A 4-20mA
Pulse
R Relay
2 RS232
4 RS485
5 Datalogger

Input
NO
1 1*4-20mA
2 2*4-20mA
Applicants
  • BTU metering system
  • HVAC/Energy Monitoring
  • Building Automation / HVAC
  • Energy consumption supervision and water conservation management
  • Cooling system and air conditioning/glycol solutions
  • Heating & District Heating Solutions & Systems
  • Smart Heat meteing
  • Thermal energy measurement (heating and conditioning) and water metering (cold and worm)
  • etc.
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