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Hangzhou SECK Intelligent Technology Co.,Ltd Hangzhou SECK Intelligent Technology Co.,Ltd
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Electronic Water Meter

Ultrasonic Heat Meter

Adopt imported precision electronics components, high measurement accuracy, low power consumption, good stability;
 No dirt deposited dead angle, no impurities by the medium, chemical material and the interference of magnetic materials, suitable for our country water quality 
Measurement mechanism has no moving parts, then never wear, long service life;
 Minimal loss of pressure, to improve heating quality;
 Using in wide range, both for cold and hot;

Details

Introduction Parameter

Working principle

 

When the water through the heat meter which installed in the heat exchange system, then meter’s calculator calculates and display the release or absorption of heat energy according to flow quantity from the flow sensor and the temp. signal of Inlet and Return flow from matching temp. sensors, and the water flow through timethe formula is like this

1

 

In the formulaQ——the release heat quantity from the medium kJ

qm——the reheat liquid instantaneous mass flow quantity through the heat

meter kg/s

∆h——the specific enthalpy difference of heat carrying liquid from inlet

 temperature and outlet temperature in the heat transfer loop kJ/kg

t——Time s

 

The key components of ultrasonic heat meter

 

Flow transducers

Installed in the heat exchange system, this part collects water flow quantity and send the

signal

Temperature sensor pairPT1000

One pair of metrological characteristics consistent or similar temperature sensor respectively measure the inlet and outlet temperature in the heat exchanging system on the same heat meter

Counter

Receiving the signals from the flow transducers and matching temperature sensors, then calculating, storage and display the heat (cold) value in the heat exchanging system


Technical Specification

Diameter

Min   Flow

Transitional   Flow

Max   Flow

Length

qminm³/h

Qtm³/h

qmaxm³/h

mm

DN 15

0.015

0.024

1.5

110

DN20

0.020

0.032

2.0

130

DN25

0.035

0.056

3.5

160

DN32

0.060

0.096

6

180

DN40

0.100

0.16

10.0

200

Measurement Accuracy

Class 2

Connection

Threaded connection

Pressure Loss

≤0.02MPa

Maximum Working PressureMWP

1.6MPa

Flow Measuring Range

1:100

Temperature Sensor

1.5m standard a pair of PT1000 Temperature Sensor cable length could be changed

Data Storage

Continuous store of 18 months record

Power-off Protection

After power-off, meter could save all the record of   before flow rate and the corresponding time, after power back, it recovery   measure function automatically, and ensure the time continuation

Remote Transmission

M-Bus

Power Supply

High Power Lithium battery

Protection Class

IP67 (IP68 need to modify)

Environmental Class

Class B

Temperature Range

495

Temperature Difference

(3~90) K

Installation Way

Inflow or Return flowDefault is Inflow, for return flow need to indicate   when ordering

Installation Position

Horizontal / Vertical

Permanence

Service cycle≥10 years

Display

8-bit LCD display

Anti-magnetic Disturbance

When the intensity of magnetic field interference is   not more than 100 ka/m, should not affect water meter measurement and remote   transmission characteristics