Ultrasonic Heat Meter

Heat Cooling Meters
  • Heat Cooling Meters
  • Remote Ultrasonic Energy meter
  • BTU meter

 RBBH DN15-40 Residential Ultrasonic Heat Meter (BTU meters) is an innovative heat meter with static flow sensor based on the ultrasonic measuring principle. RBBH Ultrasonic Heat Meter (BTU heat meter) is designed for measuring the use of heating in which water is the heat-bearing medium. RBBH Ultrasonic Heat Meter utilizes ultrasonic measuring methodology and microprocessor technology. All calculation and flow measuring circuits are designed on one single board, thus offering exceptional accuracy and reliability.

Description

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

Measuring principle of Transit-time Ultrasonic Heat Flowmeters

RBBH Series Inline  transit time Heat flow meter utilizes two transducers that function as both ultrasonic transmitters and receivers. The transducers are clamped on the outside of a closed pipe at a specific distance from each other. The transducers can be mounted in V-method in which case the ultra sound transverses the pipe twice, or W-method in which case the ultra sound transverses the pipe four times, or in Z-method in which case the transducers are mounted on opposite sides of the pipe and the ultra sound transverses the pipe only once. The selection of mounting method depends on pipe and liquid characteristics. When the flow meter works, the two transducers transmits and receives ultrasonic signals amplified by multi beam which travels firstly downstream and then upstream (Figure 1). Because  ultra sound travels faster downstream than upstream, there will be a difference of time of flight(△ｔ). When the flow is still, the time difference(△ｔ) is zero. Therefore, as long as we know the time of flight both downstream and upstream, we can work out the time difference, and then the flow velocity (V) and flow volume (Q) via the following formula.

 

 V= K*D* △ｔ               

V: Liquid velocity

K: Constant

D: Distance between the two transducers

△ｔ: Difference in time of flight

Features

Residential Ultrasonic Heat Meter (DN15 to DN40) Features:

  •  Certificated by CMC and MID and conform to CJ128-2007 and EN-1434 norm.
  • High capacity 3.6V lithium battery inside, above 8/10 years shelf life
  • Dynamic range of 250:1, 100:1 & 50:1
  • Unique design for calculator can be adjusted within 0°～120°in vertical and can be rotated within 0°～350°in horizontal, convenient to read data from different direction(only for 12 series)
  • Can be mounted in flow pipe or in return pipe, and can be mounted in horizontal and vertical
  • No straight piping requirements for DN15-DN40 meter installation, support flow and return water installation, even if horizontal and vertical installation, can be mounted at any angle.
  • Complies to MODBUS RTU and EN13757 communication protocol
  • Support optical, RS485 and wired & wireless M-BUS interface, convenient for user to manage data in different manners.
  • Support multiple communication modes, 2 pulse in 1pulse out, 4-20mA, GPRS functions(Only for 2 series)
  • Advanced calibrating device, adopt international advanced automatic heat meter calibration device, ensure the product accuracy;
  • Can  be used as cooling, heating or combined climatic meter;
  • The modular design, support and flange connections
Specification

RBBH Ultrasonic heat meter Specifications

RBBH 1&2 series Ultrasonic heat meter is a new type of heat meter which based on ultrasonic transmit-time, constituted by flow sensor, the temperature sensor and deposition of the instrument, related to the principle of heat measurement, temperature sensors, flow sensors, digital communication technology systems, and computer chip technology.

RBBH Ultrasonic heat meter Technical Parameters

RBBH Residential Ultrasonic (Cooling) Heat Meter

Performance

Parameter

Nominal Diameter(mm)

DN15

DN20

DN25

DN32

DN40

Normal Flow rate: qp(m3/h)

0.6

1.5

0.6

1.5

2.5

3.5

6

6

10

Pressure Loss (kPa/qp)

14

18

14

7

17

3.5

6

6

10

Normal Flow rate: Minimum Flow rate: qp: q1

100:1 or 50:1 optional

250:1or 100:1 or 50:1 optional

Flowrate maximum reading: m3

999999.99

Heat maximum reading (kW.h)

99999999

Measuring Range

Temperature Range℃

(4～95) ℃ or (4-130)℃ optional

Temperature Difference(K)

(3～60)K (2～110)K can be customized

Min. Temperature Pair Error(℃)

±0.25k ( can be customized)

Max. Admissible Working Pressure(MPa)

1.6MPa (2.5MPa can be customized)

Accuracy

EN1434: 2007 Class 2 and MID M1, E1

Type of Temperature Sensor

Pt1000, DIN/IEC751B (Pt500, Pt100 can be customized)

Protection Class

IP67

Power Supply

3.6 lithium battery (AC220v or DC24V can be customized)

Battery Lifetime

≥8/10 Years

Ambient Class

Class A (5-55℃) or Class B(-25-55℃) optional

Communication Mode

M-bus, MODBUS RTU, Photoelectric interface

Display

8-digit+prompting character LCD

Cumulative heat quantity:KW.h or MJ(display range:0～9999999.9), Thermal power:KW

Instantaneous flowrate:m3/h, Cumulative Volume:M3, Supply water temperature:℃, Reuren water temperature:℃, temperature difference, Total operating time

Date: Y/M/D, Clock:h/m/s

Display Resolution

Heat quantity:0.1kW.h or 1MJ, Cumulative volume:0.001m3; Temperature:0.01℃; Temperature difference:0.01K

Data Storage(EEPROM)

Heat quantity, Cumulative volume and corresponding time and the Max.thermal power of the current month stored by month. Latest 24 months' data can be stored.

Storage Temperature(℃)

Class A (5 ～ +55)℃ or

Cable Length of Temperature Sensor(m)

1.3(the supply water temperature sensor shall be mounted on the flow transducer before delivery)

Mounting Position of Meter

On supply water pipe at any angle

Dimension:

1. RBBH-1 Series   

  DN (mm)

15

20

25

32

40

Flow Rate

0.6

1.5

1.5

1.5

2.5

2.5

3.5

6

10

Dimension

(mm)

 L

110

110

130

190

130

190

160/290

180/260

200/300

H

82

82

85

85

85

85

88

90

95

W

108

108

108

108

108

108

108

108

108

Screw thread on meter (Inch)

G3/4B

G1B

G11/4B

G11/2B

G2B

Screw thread of coupling(Inch)

R1/2

R3/4

R1

R11/4

R11/2

 2.     RBBH-2 Series

DN(mm)

15

20

25

32

40

Flow Rate

0.6

1.5

0.6

0.6

1.5

1.5

2.5

2.5

3.5

6

6

10

Dimension

(mm)

 L

110

110

130

190

130

190

130

130

160

260

260

300

L2

204

204

234

294

234

294

234

294

280

380

300

328

L1

150

150

150

150

150

150

150

150

150

150

150

150

H

100

100

103

103

103

109

103

103

106

106

109

113

H1

60

60

60

60

60

60

60

60

60

60

60

60

B

105

105

105

105

105

105

105

105

105

105

105

105

Screw thread on meter (Inch)

G3/4B

G1B

G11/4B

G11/2B

G2B

Screw thread of coupling(Inch)

R1/2

R3/4

R1

R11/4

R11/2

 

Model Selection

RBBH Battery Operated Ultrasonic Heat meter Model Selection

 RBBH

DN- X

X

X

X

X

X

X

  

X

 

 

Pipe size

 

DN15-40

Cooper Thread type

Common flow

 

Meter Type

H

Heat

CH

Cooling/Heat

 

Installation situation

0

Supply

1

Return

 

Power supply

1

Battery Supply

D

24VDC

A

220VAC

 

Communication type

1

M-Bus output

2

RS485(MODBUS Protocol)

3

4-20mA
 

4

Wireless M-bus (868MHz)
 

5

BACNet

 

Display Configuration

C

Compact structure (Integral; Mounted on Sensor body)

D

Dividual structure, XX meters cable (Mounted up to 10m distance)

 

 

Pipe material

C

Cooper (only DN15 - 40)

 

Sample: RBBH RC SERIES DN15-H-0-1-1-C -1-D-SC Pipe size: DN150, normal flow: 50m3/h, Heat meter, installation selection is inlet, battery supply and M-bus output, compact, Cooper

Applicants

Residential Ultrasonic Heat Cooling Meter(BTU meter) Application

  • Smart Heating Cooling System, smart heat metering
  • Heat Exchangers,
  • Thermal energy measurement (heating and conditioning) and water metering (cold and worm)
  • Heating Systems, BTU system
  • Heat & Cool Billing
  • District heating or BTU / Thermal energy Metering
  • Chilled Water
  • HVAC Facility Management, HVAC/Energy Monitoring
  • Energy consumption supervision and water conservation management
  • Cooling system and air conditioning/glycol solutions
  • Building Automation / HVAC
  • General HVAC Applications
  • Heat and Cooling Thermal Energy Metering
  • Heating & District Heating Solutions & Systems
  • Heating & cooling generation
  • Heating & cooling distribution
  • Heating - Air-conditioning
  • HVAC + Thermal Energy
  • Etc...
Download

Catalog - Ultrasonic Heat Meter

Manual - Ultrasonic Heat Meter

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