BFU-100M: Low Cost DIN Rail Mount Design

BFU-100M Low Cost DIN Rail Mount Design
The BFU-100M is a fixed ultrasonic Heat Meter for continuous measurement of volumetric flow and heat energy.
Ultrasonic flow meters or heat meters are now widely used in the industrial and building sectors for monitoring hot
water systems and energy efficiency monitoring. Their simplicity and reliability has seen their widespread
adoption throughout the world as an accurate and reliable method of quantifying heat energy consumption.
These flow meters can be used on virtually any pipe size or material, are non-invasive and therefore not prone to
the levels of deterioration that are seen by intrusive flow meters. It is also fine to use for flow applications only.
Accuracy <1% of reading above 0.6ft/sec / 0.2 m/sec
Repeatability 0.2% fixed installation
Pipe Size 25 - 6000mm (dependant on transducers chosen)
Operating Temperature
Transducers -40°C to +160°C (Insertion Option: -40°C to +160°C)
Instrument -10°C to 70°C External Environment
Data-logging The totaliser data from the last 64 days / 32 months can be viewed using the front keys or via Modbus
Output 1x 4-20mA , 1x Pulse/Alarm (open collector) output max 80VDC 100mA (pulse width variable), 1x Relay
Power 24V DC
Dimensions 90 x 89 x 34 mm
Weight (Control Unit) (180 g)
Programming Programming via front keys / Flash set-up programming storage (multiple locations)
Features:
Positive / Negative / Net flow totaliser. Water Proprietary low-voltage transmission and self-
Volume m3 / Heat Energy adapting sensor technology. Anti-interference
design.
Texas Instruments CPU. 100 Pico-second Operates with all of our transducers, including
measurement rate resolution. clamp-on, insertion and flow-cell
Simple low cost DIN-RAIL style enclosure Able to measure electrically conductive and non-
(screw terminals for wires) conductive liquids.
Multiple location & set-up memory for Menu PIN code lock-out, to protect settings from
transporting to different sites enabling fast set-up unwanted user interference / tampering.
2 channel 12 bits analogue 4-20mA input options Scalable 4-20mA output option
eg. instead of PT100 sensors (0-1kΩ Impedance)
2 channel programmable digital outputs (isolated Frequency output. (0 - 9,999Hz), alarm driver, or
Open Collector) totaliser, pulse output, ON/OFF control, etc.
Modbus RTU or ASCII Output / RS232, RS485 2x 20 character backlit ,LCD display.
4-key, tactile membrane keypad buttons. Timed data output option for pre-selected logged
Each unit individual TAG number and values (output to RS232 /RS485)
Fixed Ultrasonic Transducers

A pair of clamp-on transducers to measure flow from outside the pipe are included complete with pipe
clamps, meaning there is no pressure drop, there are no moving parts, no leaks and no contamination.
The installation is very simple and no special skills or tools are required. The Pt100 Temperature
probes supplied can be clamp-on, Magnet mount, stick on or pocket fit (see options at time of order)
BS1H-VERSION BM1H-VERSION
Technical
BS1H Version BM1H Version
parameters
Pipe size(mm) DN25-100 DN50-700
Pipe size(inch) (1″- 4″) (2″- 28″)
Material Special high-temperature materials
Frequency 1Mhz
Installation
V : (N or W) V:Z
method
calibration Calibrated with the main unit
magnetism No magnetic influence
temperature 0 °C-160 °C
Protection class IP65 (IP68 option)
Dimension(mm) 90×85×24 90×82×29
weight 94 grammes 150 grammes
Liquid types Water, sea water. waste water, chemicals, oil, alcohol ,beer ,etc.
Suspension
≤20000ppm, may contain a very small amount of air bubbles.
concentration
Pipe material All metals, most plastics, fiber-glass, etc,
Dedicated
3m Shielded transducer cables are supplied as standard,，contact
shielded
transducer cable Bell Flow Systems for longer cable requirements (max 500m)
Fixed Installation ultrasonic Heat Meter
A B C D E F G H I J K
BFU-100M □—□—□—□—□—□—□—□—□—□—□
Letter Parameter Option
18: Version-18
A Mainboard version
1: standard DIN Rail mount type
B Main unit type
C Power D: 15-24V DC or 15-17 V AC
BS1H-type Clamp-on high temperature transducer for
small pipe
D transducer BM1H-type Clamp-on high temperature transducer for
medium pipe
Pipe size DN(mm)

0: Carbon steel
1: Stainless steel
F Pipe material
2: cast iron
3. Other (Specify)
G Nominal pressure MPa
K: KC(therm)
G: GJ
H Thermal unit
B: BTU
H: KWH(kilowatt-hour)
N: None
A: 4-20mA output(note range / value)
F: OCT outputs (note value or frequency)
I Signal output R: Relay outputs 9value or alarm required)
4: RS485 output(note baud rate、communication check
digit)
N: None (Standard PT100 signal)
J Signal input 1: one channel 4-20mA analog input (note range）
2: two channels 4-20mA analog input（note range）
Cable(single cable
K Meter,( type is four-core cable, others are two-core cable)
length)
For example: BFU-100M18-1-D-BS1H-50-0-1.6-K-N-N-10

If you don’t know some of the requested settings above, they are easily programmed by following
the instructions in the manual.

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BFU-100M Low Cost DIN Rail Mount Design

Accuracy <1% of reading above 0.6ft/sec / 0.2 m/sec

Repeatability 0.2% fixed installation

Pipe Size 25 - 6000mm (dependant on transducers chosen)

Transducers -40°C to +160°C (Insertion Option: -40°C to +160°C)

Instrument -10°C to 70°C External Environment

Weight (Control Unit) (180 g)

Fixed Ultrasonic Transducers

Pipe size DN(mm)

For example: BFU-100M18-1-D-BS1H-50-0-1.6-K-N-N-10

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