Mechanical Flow Meter/Heat Meter Popular Type

• Customization: Available
• After-sales Service: 6 Years
• Warranty: 6 Years
• Model NO.: RLM(G)-15-25
• Accuracy: ±0.6-1%
• Main Application: Water
• Size: DN15~DN40
• Sensor: Jumo Temperature Sensor
• Application: Energy Metering
• Type: Turbine Flow Meter
• Measuring Media: Liquid
• Measuring Principle: Mechanics
• Measurement Object: Closed Pipeline
• Certification: RoHS, ISO
• Warrenty: 6 Years
• Transport Package: Export Carton
• Specification: Brass body, brass connectors
• Trademark: OEM
• Origin: Ningbo, China
• HS Code: 9028109000
• Production Capacity: 100, 000/Month

Product Description

The mechanical heat meter measures the flow volume and display the heat energy released or absorbed by water flow when passing though the heat exchange system.

 The temperature range is 4~95ºC.

 Measurement unit: Kwh, Gcal

 Communication Interface choice:

1. M-BUS

2. RS-485

3. Pulse output

4. LoRa/LoRaWAN

5. Water Meter Impulse output, connects Heat Meter, M-BUS/RS-485 output
 

Models and Specifications
 

Model	Qn(m3/h)	Length(mm)	DN(mm)	Sensor length	Display	Romote	Class
RLM(G)-15-0.6	0.6	110	15	1.5m	kw/h	M-BUS	2
RLM(G)-15-0.6	0.6	110	15	1.5m	Gcal	RS-485	2
RLM(G)-15-1.5	1.5	110	15	1.5m	kw/h	M-BUS	2
RLM(G)-15-1.5	1.5	110	15	1.5m	Gcal	RS-485	2
RLM(G)-20-2.5	2.5	130	20	1.5m	kw/h	M-BUS	2
RLM(G)-20-2.5	2.5	130	20	1.5m	Gcal	RS-485	2
RLM(G)-25-2.5	2.5	160	25	1.5m	kw/h	M-BUS	2
RLM(G)-25-2.5	2.5	160	25	1.5m	Gcal	RS-485	2

 
 
Features:

1. Flow-rate range: 0.6~2.5m3/h.
2. Min. temperature difference 3ºC
3. Horizontal/vertical installation
4. Embedded and removable installation design to prevent damage during the adjustment period
5. Smart multi-flow design, capable of recording flow rate and volume
6. Advanced nonmagnetic sensing technology
7. High precision design, meeting Class 2 metering requirements of EN1434 and CJ128 standards
8. A lithium battery with service life exceeding six years
9. Optional remote RS485 or M-BUS output, convenient for remote systems
10. Payment settlement date renewable, 18-month data storage
11. 360 degree revolving monitor for easy reading
12. Inclined LCD for optimized viewing
13. Wide measuring range (q s/q i =100:1)
14. Low startup flow rate
15. Capable of measuring both heat and cold energies
16. For use at water inlet end (heat meters for return water end are available at the request of users)
17. PT1000 temperature sensor pair
18. Environment class: A

Main Technical Parameters:
 

Normal Flow(Qn)	0.6m3/h	1.5m3/h	2.5m3/h
Flow range(m3/h)	0.012~1.2	0.03~3	0.05~5
Pressure loss(KPa/Qp) Reference diagram I	24	24	24
Start flow(L/h)	3	5	7
Max. Pressure(MPa)	1.6
Temperature range(ºC)	4~95

 
 
Pressure Loss Diagram:


 
Measuring Features:

1.Water pressure: No more than 1Mpa
2.Measuring Class & Max. Tolerance
This product is for Class 2 measurement, and the max tolerance is shown in the curve below: 
E=±(3+4Δθmin/Δθ+0.02qp/q)%
Therein, Δθmin means the minimum temperature difference, and Δθ the actual temperature difference.

Dimensional Parameters:

Normal flow(Qn)	m3/h	0.6		1.5		2.5
Normal DN	mm	15		15		20
Body thread	----	G3/4"B		G3/4"B		G1"B
Connection thread	----	1/2"		1/2"		3/4"
Height	mm	86	86	86	86	86	86
Length	mm	110	110	110	110	130	130

Pipeline Installation Diagram (for Meters Used at Inlet or Outlet for option):