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計測機器 CALEFFI 750710のPDF マニュアルをオンラインで閲覧またはダウンロードできます。CALEFFI 750710 16 ページ。 Direct heat meter

2) User circuit diagram - 2-way zone valve regulation

Central heating system

Flow meter + probe pockets (if threaded connection)

p (m w.g.)

The broken red line indicates the pressure drop at the permanent flow rate Qp (Dp=3,5 m w.g., for threaded connections only).

1/2"

3/4"

5,0

7,9

17,8

DN 50

DN 65

DN 80

142

System

kWh

1 1/4"

1 1/2"

17,8

33,0

DN 100 DN 125 DN 150 DN 200

223

360

540

900

Maintenance work

Strainer cleaning

It is periodically necessary to clean the strainer on the flow pipe

designed to protect the volume meter.

By observing the instant flow rate and flow-return temperature

difference values (significantly lower flow rate compared to the nominal

value and significantly higher temperature difference), it is easy to find

out whether the strainer is clogged and clean it.

p (kPa)